config: read resolved config via namespace accessors (#33013)

python/sglang/srt/arg_groups/overrides.py

@@ -261,19 +261,14 @@ def mamba_extra_buffer_of(cfg: Any) -> bool:
 
 def declare_load_time_override(source: str, declared: Dict[str, Any]) -> None:
     """Declare a load-time resolved field (model-file config overrides,
-    weight-resolved dtypes) on the published ``server_args``: resolution has
+    weight-resolved dtypes): validated against the resolvable whitelist, then
-    already materialized, so the declaration writes through, joining the
+    written to the config bags via ``get_context().override``; ``server_args``
-    declaration stash for provenance and republish consistency."""
+    stays the pristine startup record."""
     from sglang.srt.runtime_context import get_context
 
-    server_args = get_context().server_args
+    context = get_context()
-    validate_declarations(server_args, [(source, dict(declared))])
+    validate_declarations(context.server_args, [(source, dict(declared))])
-    override = getattr(server_args, "override", None)
+    context.override(source, **declared)
-    if override is not None:
-        override(source, **declared)
-    else:
-        # Config-shaped fixtures without the mutation entry point.
-        _apply_fields(server_args, declared)
 
 
 def collect_model_override_declarations(

python/sglang/srt/batch_overlap/two_batch_overlap.py

@@ -40,7 +40,7 @@ from sglang.srt.model_executor.forward_batch_info import (
     compute_position,
 )
 from sglang.srt.model_executor.forward_context import get_attn_backend
-from sglang.srt.runtime_context import get_parallel, get_server_args
+from sglang.srt.runtime_context import get_device, get_parallel, get_server_args
 from sglang.srt.speculative.spec_info import SpecInput
 from sglang.srt.utils import BumpAllocator, empty_context, get_bool_env_var, is_hip
 
@@ -184,7 +184,7 @@ def _update_device_and_sum_field_from_cpu_field(
         cpu_value
         if isinstance(cpu_value, torch.Tensor)
         else torch.tensor(cpu_value, dtype=old_device_value.dtype)
-    ).to(device=get_server_args().device, non_blocking=True)
+    ).to(device=get_device().device, non_blocking=True)
     setattr(batch, device_field, new_device_value)
 
     if sum_field is not None:
@@ -336,7 +336,7 @@ def compute_split_indices_for_cuda_graph_replay(
 class TboCudaGraphRunnerPlugin:
     def __init__(self):
         self._tbo_children_num_token_non_padded = torch.zeros(
-            (2,), dtype=torch.int32, device=get_server_args().device
+            (2,), dtype=torch.int32, device=get_device().device
         )
 
     def capture_one_batch_size(self, batch: ForwardBatch, num_tokens: int):
@@ -835,7 +835,7 @@ class TboForwardBatchPreparer:
         value_a = min(tbo_split_token_index, num_token_non_padded)
         value_b = max(0, num_token_non_padded - tbo_split_token_index)
         return torch.tensor([value_a, value_b], dtype=torch.int32).to(
-            device=get_server_args().device, non_blocking=True
+            device=get_device().device, non_blocking=True
         )
 
     @classmethod

python/sglang/srt/configs/inkling.py

@@ -8,6 +8,7 @@ from transformers import CONFIG_MAPPING
 from transformers.configuration_utils import PretrainedConfig
 
 from sglang.srt.configs.mamba_utils import BaseLinearStateParams
+from sglang.srt.runtime_context import get_exec
 
 
 class InklingModelConfig(PretrainedConfig):
@@ -224,9 +225,8 @@ class InklingModelConfig(PretrainedConfig):
             self.swa_num_key_value_heads, self.swa_head_dim
         )
         stream_dim = self.hidden_size
-        from sglang.srt.runtime_context import get_server_args
 
-        if get_server_args().enable_scattered_sconv:
+        if get_exec().comm.enable_scattered_sconv:
             # Scattered sconv: the attn/mlp output sconvs run on the [T, H/P]
             # hidden shard, so their conv-state caches shard with them.
             assert (

python/sglang/srt/debug_utils/dumper.py

@@ -23,6 +23,7 @@ import torch.distributed as dist
 import zmq
 
 from sglang.srt.managers.io_struct import sock_recv, sock_send, wrap_as_pickle
+from sglang.srt.runtime_context import get_serving
 
 # -------------------------------------- config base ------------------------------------------
 
@@ -1798,7 +1799,7 @@ class _SGLangPlugin(_FrameworkPlugin):
             if args is None:
                 return None
 
-            return args.tokenizer_path
+            return get_serving().tokenizer_path
         except Exception:
             return None
 

python/sglang/srt/disaggregation/base/conn.py

@@ -41,6 +41,7 @@ class KVArgs:
     kv_data_lens: List[int]
     kv_item_lens: List[int]
     kv_layer_ids: List[int]
+    kv_cache_dtype_str: str
     aux_data_ptrs: List[int]
     aux_data_lens: List[int]
     aux_item_lens: List[int]

python/sglang/srt/disaggregation/common/conn.py

@@ -36,7 +36,7 @@ from sglang.srt.layers.dp_attention import (
     get_attention_dp_rank,
     get_attention_dp_size,
 )
-from sglang.srt.runtime_context import get_model, get_parallel
+from sglang.srt.runtime_context import get_parallel, get_serving
 from sglang.srt.server_args import ServerArgs
 from sglang.srt.utils.network import (
     NetworkAddress,
@@ -148,6 +148,7 @@ class CommonKVManager(BaseKVManager):
         is_mla_backend: Optional[bool] = False,
     ):
         self.kv_args = args
+        self.kv_cache_dtype_str = args.kv_cache_dtype_str
         self.kv_item_lens_sum = sum(args.kv_item_lens)
         self.state_item_lens_sum = sum(x for comp in args.state_item_lens for x in comp)
         self.is_mla_backend = is_mla_backend
@@ -533,11 +534,11 @@ class CommonKVManager(BaseKVManager):
 
         if (
             info.kv_cache_dtype is not None
-            and info.kv_cache_dtype != get_model().kv_cache_dtype
+            and info.kv_cache_dtype != self.kv_cache_dtype_str
         ):
             raise RuntimeError(
                 f"KV cache dtype mismatch: prefill server has kv_cache_dtype={info.kv_cache_dtype}, "
-                f"but decode server has kv_cache_dtype={get_model().kv_cache_dtype}. "
+                f"but decode server has kv_cache_dtype={self.kv_cache_dtype_str}. "
                 f"Both servers must use the same --kv-cache-dtype value."
             )
 
@@ -701,7 +702,7 @@ class CommonKVManager(BaseKVManager):
             "rank_ip": self.local_ip,
             "rank_port": self.rank_port,
             "page_size": self.kv_args.page_size,
-            "kv_cache_dtype": get_model().kv_cache_dtype,
+            "kv_cache_dtype": self.kv_cache_dtype_str,
             "load_balance_method": self.server_args.load_balance_method,
             "enable_dsa_cache_layer_split": getattr(
                 self.server_args, "enable_dsa_cache_layer_split", False
@@ -709,7 +710,7 @@ class CommonKVManager(BaseKVManager):
             # Self-register the HTTP API port so the decode can derive the PD
             # retract rebootstrap /generate URL from bootstrap info instead of a
             # router-injected pd_rebootstrap_prefill_url.
-            "prefill_http_port": self.server_args.port,
+            "prefill_http_port": get_serving().port,
         }
 
         max_retries, initial_delay, max_delay = 5, 1.0, 30.0

python/sglang/srt/disaggregation/decode.py

@@ -87,7 +87,7 @@ from sglang.srt.observability.req_time_stats import (
     set_schedule_time_batch,
     set_time_batch,
 )
-from sglang.srt.runtime_context import get_parallel
+from sglang.srt.runtime_context import get_disagg, get_parallel
 from sglang.srt.utils import get_num_new_pages, is_npu
 from sglang.srt.utils.network import NetworkAddress
 from sglang.srt.utils.nvtx_utils import scheduler_nvtx_method
@@ -423,6 +423,9 @@ class DecodePreallocQueue(DecodeHiCachePreallocMixin):
 
         kv_args.pp_rank = self.pp_rank
         kv_args.system_dp_rank = self.scheduler.ps.dp_rank
+        kv_args.kv_cache_dtype_str = (
+            self.scheduler.tp_worker.model_runner.kv_cache_dtype_str
+        )
         transfer_kv_pool = (
             self.scheduler.hisparse_coordinator.mem_pool_host
             if self.scheduler.enable_hisparse
@@ -2244,7 +2247,7 @@ class SchedulerDisaggregationDecodeMixin:
                 # Decode-radix path: new requests already matched in
                 # `pop_preallocated`. Retracted requests reset `last_node`,
                 # so re-match only when that state is missing.
-                if self.server_args.disaggregation_decode_enable_radix_cache:
+                if get_disagg().disaggregation_decode_enable_radix_cache:
                     tree_cache = self.tree_cache if req.last_node is None else None
                 else:
                     tree_cache = self.tree_cache
@@ -2284,7 +2287,7 @@ class SchedulerDisaggregationDecodeMixin:
         if self.enable_decode_hicache:
             self.tree_cache.check_hicache_events()
 
-        if self.server_args.disaggregation_decode_enable_offload_kvcache:
+        if get_disagg().disaggregation_decode_enable_offload_kvcache:
             self.decode_offload_manager.check_offload_progress()
 
         # try to resume retracted requests if there are enough space for another `num_reserved_decode_tokens` decode steps
@@ -2296,9 +2299,7 @@ class SchedulerDisaggregationDecodeMixin:
 
         if not hasattr(self, "polling_count"):
             self.polling_count = 0
-            self.polling_interval = (
+            self.polling_interval = get_disagg().disaggregation_decode_polling_interval
-                self.server_args.disaggregation_decode_polling_interval
-            )
 
         self.polling_count = (self.polling_count + 1) % self.polling_interval
 

python/sglang/srt/disaggregation/encode_grpc_server.py

@@ -28,6 +28,7 @@ from sglang.srt.disaggregation.encode_server import (
 )
 from sglang.srt.managers.io_struct import async_sock_send, wrap_as_pickle
 from sglang.srt.managers.schedule_batch import Modality
+from sglang.srt.runtime_context import get_disagg
 from sglang.srt.server_args import PortArgs, ServerArgs
 from sglang.srt.utils import random_uuid
 from sglang.srt.utils.network import NetworkAddress, get_zmq_socket
@@ -117,13 +118,13 @@ class SGLangEncoderServer(SGLangEncoderServicer):
                 context.set_details(error_msg)
                 return sglang_encoder_pb2.EncodeResponse()
 
-            if self.server_args.encoder_transfer_backend == "mooncake":
+            if get_disagg().encoder_transfer_backend == "mooncake":
                 return sglang_encoder_pb2.EncodeResponse(
                     embedding_size=nbytes,
                     embedding_len=embedding_len,
                     embedding_dim=embedding_dim,
                 )
-            elif self.server_args.encoder_transfer_backend == "zmq_to_scheduler":
+            elif get_disagg().encoder_transfer_backend == "zmq_to_scheduler":
                 embedding_ports = list(request.embedding_port)
                 logger.info(f"embedding_port = {embedding_ports}")
                 if not embedding_ports:
@@ -141,7 +142,7 @@ class SGLangEncoderServer(SGLangEncoderServicer):
                     await asyncio.gather(*tasks)
                     self.encoder.embedding_to_send.pop(request.req_id, None)
                 return sglang_encoder_pb2.EncodeResponse()
-            elif self.server_args.encoder_transfer_backend == "zmq_to_tokenizer":
+            elif get_disagg().encoder_transfer_backend == "zmq_to_tokenizer":
                 embedding_port = (
                     request.embedding_port[0] if request.embedding_port else 0
                 )

python/sglang/srt/disaggregation/encode_server.py

@@ -63,7 +63,7 @@ from sglang.srt.observability.trace import (
     process_tracing_init,
     trace_set_thread_info,
 )
-from sglang.srt.runtime_context import publish
+from sglang.srt.runtime_context import get_disagg, get_exec, get_mm, publish
 from sglang.srt.server_args import (
     PortArgs,
     ServerArgs,
@@ -352,7 +352,7 @@ class MMEncoder:
             [], dtype=self._embedding_dtype
         ).element_size()
 
-        if self.server_args.enable_mm_global_cache:
+        if get_mm().enable_mm_global_cache:
             from sglang.srt.mem_cache.storage.mooncake_store.embedding_cache_controller import (
                 EmbeddingCacheController,
             )
@@ -370,15 +370,15 @@ class MMEncoder:
             self.mm_global_cache = None
 
         # Pre-compute embedding metadata (needed by all ranks for mooncake)
-        if self.server_args.encoder_transfer_backend == "mooncake":
+        if get_disagg().encoder_transfer_backend == "mooncake":
             self._embedding_dims = self._infer_embedding_dims()
 
         if self.rank == 0:
             logger.info(
-                f"Using transfer backend: {self.server_args.encoder_transfer_backend}"
+                f"Using transfer backend: {get_disagg().encoder_transfer_backend}"
             )
 
-            if self.server_args.encoder_transfer_backend == "mooncake":
+            if get_disagg().encoder_transfer_backend == "mooncake":
                 self.local_ip = get_local_ip_auto()
 
                 self.engine = get_mooncake_transfer_engine()
@@ -391,8 +391,8 @@ class MMEncoder:
                         hostname=self.local_ip,
                         gpu_id=self.gpu_id,
                         ib_device=(
-                            self.server_args.disaggregation_ib_device
+                            get_disagg().disaggregation_ib_device
-                            or self.server_args.mooncake_ib_device
+                            or get_exec().moe.mooncake_ib_device
                         ),
                     )
 
@@ -401,7 +401,7 @@ class MMEncoder:
             self.encode_dispatch_lock = asyncio.Lock()
 
             # Async mooncake state: track background VIT forward completion
-            if self.server_args.encoder_transfer_backend == "mooncake":
+            if get_disagg().encoder_transfer_backend == "mooncake":
                 self._forward_ready_events: Dict[str, asyncio.Event] = {}
                 self._forward_results: Dict[str, dict] = {}
                 # when multiple decoder TP ranks call
@@ -415,12 +415,12 @@ class MMEncoder:
 
         # Bind unified encode entry point based on backend and cache config
         if self.mm_global_cache is not None:
-            if self.server_args.encoder_transfer_backend == "mooncake":
+            if get_disagg().encoder_transfer_backend == "mooncake":
                 self._encode_fn = self.encode_with_global_cache_mooncake
             else:
                 self._encode_fn = self.encode_with_global_cache
         else:
-            if self.server_args.encoder_transfer_backend == "mooncake":
+            if get_disagg().encoder_transfer_backend == "mooncake":
                 self._encode_fn = self.encode_with_mooncake
             else:
                 self._encode_fn = self.encode
@@ -1710,7 +1710,7 @@ class MMEncoder:
                 mm_item.set(k, _convert(v))
 
             cache_hit = False
-            use_mm_cache = self.server_args.enable_prefix_mm_cache and log_metrics
+            use_mm_cache = get_mm().enable_prefix_mm_cache and log_metrics
             if use_mm_cache:
                 mm_item.set_pad_value()
                 mm_hash = MultiModalStaticCache.combine_hashes([mm_item.hash])
@@ -1806,7 +1806,7 @@ class MMEncoder:
         embedding_port=None,
         url=None,
     ):
-        if self.server_args.encoder_transfer_backend == "mooncake":
+        if get_disagg().encoder_transfer_backend == "mooncake":
             # Wait for async VIT forward completion if needed
             req_id = mm_data.req_id
             if req_id in self._forward_ready_events:
@@ -1878,7 +1878,7 @@ class MMEncoder:
         logger.info(f"{endpoint = }")
 
         # Serialize data
-        if self.server_args.encoder_transfer_backend == "mooncake":
+        if get_disagg().encoder_transfer_backend == "mooncake":
             # Mooncake already pushed the embedding via RDMA;
             new_mm_data = mm_data.copy_without_embedding()
             serialized_data = pickle.dumps(new_mm_data)
@@ -1910,11 +1910,11 @@ class MMEncoder:
         await asyncio.get_event_loop().run_in_executor(self.executor, send_with_socket)
         if (
             encoder_metrics_collector is not None
-            and self.server_args.encoder_transfer_backend != "mooncake"
+            and get_disagg().encoder_transfer_backend != "mooncake"
         ):
             encoder_metrics_collector.observe_transfer(
                 time.perf_counter() - _zmq_xfer_start,
-                backend=self.server_args.encoder_transfer_backend,
+                backend=get_disagg().encoder_transfer_backend,
             )
 
     async def encode(

python/sglang/srt/disaggregation/mooncake/conn.py

@@ -60,6 +60,7 @@ from sglang.srt.observability.trace import (
     TraceReqContext,
     trace_set_thread_info,
 )
+from sglang.srt.runtime_context import get_schedule
 from sglang.srt.server_args import ServerArgs
 from sglang.srt.utils.network import NetworkAddress
 
@@ -327,7 +328,7 @@ class MooncakeKVManager(CommonKVManager):
             lambda ptr, size: self.engine.batch_register([ptr], [size]),
             self.kv_args,
             count,
-            self.server_args.chunked_prefill_size,
+            get_schedule().chunked_prefill_size,
         )
         self.kv_buffer_tensors = None
 
@@ -498,7 +499,7 @@ class MooncakeKVManager(CommonKVManager):
             room,
             self.transfer_infos,
             self.kv_buffer_tensors,
-            self.server_args.chunked_prefill_size,
+            get_schedule().chunked_prefill_size,
             self._staging_ctx.prefetch_requested,
             self._staging_ctx.prefetch_sockets,
         )

python/sglang/srt/disaggregation/nixl/conn.py

@@ -44,6 +44,7 @@ from sglang.srt.disaggregation.utils import (
     resolve_dcp_dst_entry_indices,
 )
 from sglang.srt.environ import envs
+from sglang.srt.runtime_context import get_schedule
 from sglang.srt.server_args import ServerArgs
 
 try:
@@ -538,7 +539,7 @@ class NixlKVManager(CommonKVManager):
             lambda ptr, size: self._register_staging_memory(ptr, size, gpu_id),
             self.kv_args,
             count,
-            self.server_args.chunked_prefill_size,
+            get_schedule().chunked_prefill_size,
         )
 
     def _init_staging_allocator(self):
@@ -670,7 +671,7 @@ class NixlKVManager(CommonKVManager):
             room,
             self.transfer_infos,
             self.kv_buffer_tensors,
-            self.server_args.chunked_prefill_size,
+            get_schedule().chunked_prefill_size,
             self._staging_ctx.prefetch_requested,
             self._staging_ctx.prefetch_sockets,
         )

python/sglang/srt/disaggregation/prefill.py

@@ -65,6 +65,7 @@ from sglang.srt.mem_cache.common import (
 )
 from sglang.srt.mem_cache.deepseek_v4_memory_pool import DeepSeekV4TokenToKVPool
 from sglang.srt.observability.req_time_stats import set_schedule_time_batch
+from sglang.srt.runtime_context import get_disagg
 from sglang.srt.utils import is_npu
 from sglang.srt.utils.nvtx_utils import scheduler_nvtx_method
 
@@ -183,6 +184,9 @@ class PrefillBootstrapQueue:
         kv_args.engine_rank = self.tp_rank
         kv_args.pp_rank = self.pp_rank
         kv_args.system_dp_rank = self.scheduler.ps.dp_rank
+        kv_args.kv_cache_dtype_str = (
+            self.scheduler.tp_worker.model_runner.kv_cache_dtype_str
+        )
         layer_shard_enabled = getattr(
             self.token_to_kv_pool, "layer_shard_enabled", False
         )
@@ -1249,7 +1253,7 @@ class SchedulerDisaggregationPrefillMixin:
 
     def optimistic_release_and_requeue(self: Scheduler, req: Req) -> None:
         """Release KV cache and requeue an optimistic prefill request."""
-        max_attempts = self.server_args.optimistic_prefill_attempts
+        max_attempts = get_disagg().optimistic_prefill_attempts
         maybe_cache_unfinished_req(req, self.tree_cache)
         release_kv_cache(req, self.tree_cache)
         req.reset_for_retract()

python/sglang/srt/distributed/device_communicators/pymscclpp.py

@@ -14,7 +14,7 @@ from sglang.srt.compilation.compile_phase import (
 from sglang.srt.model_executor.runner_backend_utils.tc_piecewise_cuda_graph import (
     is_in_tc_piecewise_cuda_graph,
 )
-from sglang.srt.runtime_context import get_server_args
+from sglang.srt.runtime_context import get_exec
 
 logger = logging.getLogger(__name__)
 
@@ -25,7 +25,7 @@ class PyMscclppCommunicator:
 
     def _is_symm_mem_enabled(self) -> bool:
         try:
-            return get_server_args().enable_symm_mem
+            return get_exec().comm.enable_symm_mem
         except ValueError:
             return False
 

python/sglang/srt/distributed/device_communicators/pynccl_allocator.py

@@ -15,7 +15,7 @@ from torch.cuda.memory import (
 
 from sglang.srt.distributed.parallel_state import GroupCoordinator
 from sglang.srt.environ import envs
-from sglang.srt.runtime_context import get_server_args
+from sglang.srt.runtime_context import get_exec
 from sglang.srt.utils.common import torch_release
 
 after_2_8_0 = torch_release >= (2, 8)
@@ -159,7 +159,7 @@ _register_func = None
 
 def is_symmetric_memory_enabled():
     try:
-        return get_server_args().enable_symm_mem
+        return get_exec().comm.enable_symm_mem
     except ValueError:
         return False
 

python/sglang/srt/distributed/device_communicators/torch_symm_mem.py

@@ -12,6 +12,7 @@ from sglang.srt.distributed.device_communicators.all_reduce_utils import (
     TORCH_SYMM_MEM_ALL_REDUCE_MAX_SIZES,
 )
 from sglang.srt.environ import envs
+from sglang.srt.runtime_context import get_exec
 from sglang.srt.utils import is_cuda, is_hip
 
 try:
@@ -98,10 +99,9 @@ class TorchSymmMemCommunicator:
         # ([16384, 6144] bf16 = 192 MiB), including room for tail regions.
         if envs.SGLANG_OPT_USE_INKLING_CUSTOM_AR.get():
             self.max_size = max(self.max_size, 256 * 1024 * 1024)
-            from sglang.srt.runtime_context import get_server_args
 
             if (
-                get_server_args().enable_scattered_sconv
+                get_exec().comm.enable_scattered_sconv
                 or envs.SGLANG_OPT_USE_INKLING_FUSED_AR_SCONV.get()
             ):
                 # Fused extend kernels are out-of-place, so OUT must hold the

python/sglang/srt/dllm/mixin/scheduler.py

@@ -11,6 +11,7 @@ from sglang.srt.managers.schedule_policy import AddReqResult, PrefillAdder
 from sglang.srt.mem_cache.common import release_kv_cache
 from sglang.srt.model_executor.forward_batch_info import ForwardMode
 from sglang.srt.observability.req_time_stats import set_time_batch
+from sglang.srt.runtime_context import get_exec, get_schedule
 
 logger = logging.getLogger(__name__)
 
@@ -22,7 +23,7 @@ class SchedulerDllmMixin:
     def init_diffusion_llm(self: Scheduler):
         self.dllm_config = (
             DllmConfig.from_server_args(self.server_args)
-            if self.server_args.dllm_algorithm is not None
+            if get_exec().dllm.dllm_algorithm is not None
             else None
         )
         self.dllm_manager = DllmManager(dllm_config=self.dllm_config)
@@ -200,7 +201,7 @@ class SchedulerDllmMixin:
             self.chunked_prefill_size,
             running_bs if self.is_mixed_chunk else 0,
             self.priority_scheduling_preemption_threshold,
-            prefill_max_requests=self.server_args.prefill_max_requests,
+            prefill_max_requests=get_schedule().prefill_max_requests,
             dllm_config=self.dllm_config,
         )
 

python/sglang/srt/elastic_ep/expert_backup_client.py

@@ -14,6 +14,7 @@ from sglang.srt.distributed.parallel_state import (
 from sglang.srt.environ import envs
 from sglang.srt.eplb.expert_location import get_global_expert_location_metadata
 from sglang.srt.managers.io_struct import UpdateExpertBackupReq, sock_recv, sock_send
+from sglang.srt.runtime_context import get_exec
 from sglang.srt.server_args import ServerArgs
 from sglang.srt.utils.network import get_local_ip_auto
 
@@ -111,7 +112,7 @@ class ExpertBackupClient:
         global_expert_location_metadata = get_global_expert_location_metadata()
         num_experts = (
             self.model_config.hf_config.n_routed_experts
-            + self.server_args.ep_num_redundant_experts
+            + get_exec().moe.ep_num_redundant_experts
         )
         num_local_experts = num_experts // self.moe_ep_size
         for i in range(self.engine_num):

python/sglang/srt/entrypoints/grpc_bridge.py

@@ -377,9 +377,9 @@ class RuntimeHandle:
         model_config = self.tokenizer_manager.model_config
         result = {
             "model_path": self.tokenizer_manager.model_path,
-            "tokenizer_path": self.server_args.tokenizer_path,
+            "tokenizer_path": self.tokenizer_manager.server_args.tokenizer_path,
             "is_generation": self.tokenizer_manager.is_generation,
-            "weight_version": self.server_args.weight_version,
+            "weight_version": self.tokenizer_manager.server_args.weight_version,
             "model_type": getattr(model_config.hf_config, "model_type", None),
             "architectures": getattr(model_config.hf_config, "architectures", None),
         }
@@ -432,7 +432,7 @@ class RuntimeHandle:
                 "max_model_len": self.tokenizer_manager.model_config.context_len,
             }
         ]
-        if self.server_args.enable_lora and hasattr(
+        if self.tokenizer_manager.server_args.enable_lora and hasattr(
             self.tokenizer_manager, "lora_registry"
         ):
             lora_registry = self.tokenizer_manager.lora_registry

python/sglang/srt/eplb/eplb_manager.py

@@ -18,7 +18,7 @@ from sglang.srt.eplb.expert_location import (
     get_global_expert_location_metadata,
 )
 from sglang.srt.eplb.expert_location_updater import ExpertLocationUpdater
-from sglang.srt.runtime_context import get_server_args
+from sglang.srt.runtime_context import get_model
 
 if TYPE_CHECKING:
     from sglang.srt.configs.model_config import ModelConfig
@@ -343,8 +343,8 @@ def update_expert_location_with_recovery(
         else:
             # Load the missing weights from disk
             update_weights_from_disk_callable(
-                get_server_args().model_path,
+                get_model().model_path,
-                get_server_args().load_format,
+                get_model().load_format,
                 weight_name_filter=weight_name_filter,
             )
 

python/sglang/srt/eplb/expert_location_dispatch.py

@@ -18,7 +18,7 @@ from typing import Literal, Optional
 import torch
 
 from sglang.srt.eplb.expert_location import get_global_expert_location_metadata
-from sglang.srt.runtime_context import get_server_args
+from sglang.srt.runtime_context import get_exec
 
 
 @dataclass
@@ -40,8 +40,7 @@ class ExpertLocationDispatchInfo:
 
     @classmethod
     def init_new(cls, layer_id: int):
-        server_args = get_server_args()
+        ep_dispatch_algorithm = get_exec().moe.ep_dispatch_algorithm
-        ep_dispatch_algorithm = server_args.ep_dispatch_algorithm
         expert_location_metadata = get_global_expert_location_metadata()
         assert expert_location_metadata is not None
 
@@ -50,7 +49,7 @@ class ExpertLocationDispatchInfo:
 
         return cls(
             ep_dispatch_algorithm=ep_dispatch_algorithm,
-            rank_invariant=server_args.moe_a2a_backend == "none",
+            rank_invariant=get_exec().moe.moe_a2a_backend == "none",
             partial_logical_to_rank_dispatch_physical_map=(
                 expert_location_metadata.logical_to_rank_dispatch_physical_map[
                     layer_id, :

python/sglang/srt/eplb/expert_location_updater.py

@@ -26,7 +26,7 @@ from sglang.srt.eplb.expert_location import (
     ExpertLocationMetadata,
     get_global_expert_location_metadata,
 )
-from sglang.srt.runtime_context import get_server_args
+from sglang.srt.runtime_context import get_device
 from sglang.srt.utils import get_bool_env_var
 
 logger = logging.getLogger(__name__)
@@ -109,7 +109,7 @@ def _update_expert_weights_with_canary(
         canary_tensor = (
             _get_canary_value(old_expert_location_metadata, layer_id)
             .clone()
-            .to(device=get_server_args().device, non_blocking=True)
+            .to(device=get_device().device, non_blocking=True)
         )
         routed_experts_weights_of_layer[layer_id].append(canary_tensor)
 

python/sglang/srt/hardware_backend/mlx/model_runner_stub.py

@@ -19,6 +19,7 @@ from sglang.srt.model_executor.model_runner import ModelRunner
 from sglang.srt.model_executor.model_runner_components.layer_setup import (
     ModelLayerInfo,
 )
+from sglang.srt.runtime_context import get_exec, get_memory, get_schedule
 
 logger = logging.getLogger(__name__)
 
@@ -144,13 +145,13 @@ class MlxModelRunnerStub(ModelRunner):
         (``MlxAuxiliaryStateComponent``) raises ``NotImplementedError`` for
         the mode.
         """
-        if self.server_args.disable_radix_cache:
+        if get_memory().disable_radix_cache:
             return 1
         return MLX_AUX_STATE_SIZE_MAX_RUNNING_REQUESTS_RATIO
 
     def _explicit_aux_state_size_per_worker(self) -> int | None:
         """Return the explicit auxiliary-state cap for this attention-DP owner."""
-        aux_state_size = self.server_args.max_mamba_cache_size
+        aux_state_size = get_schedule().max_mamba_cache_size
         if aux_state_size is None:
             return None
         return aux_state_size // self.ps.attn_dp_size
@@ -173,7 +174,7 @@ class MlxModelRunnerStub(ModelRunner):
         Requires ``self.max_total_num_tokens`` to already be set.
         """
         capacity_cap = self.max_total_num_tokens // 2
-        requested = self.server_args.max_running_requests
+        requested = get_schedule().max_running_requests
         if requested is None:
             requested_per_worker = None
             resolved = min(capacity_cap, 4096)
@@ -189,7 +190,7 @@ class MlxModelRunnerStub(ModelRunner):
             ratio = self._aux_state_slots_per_request()
             resolved = min(resolved, aux_state_size // ratio)
             if resolved <= 0:
-                global_aux_state_size = self.server_args.max_mamba_cache_size
+                global_aux_state_size = get_schedule().max_mamba_cache_size
                 min_global_aux_state_size = ratio * self.ps.attn_dp_size
                 raise RuntimeError(
                     f"MLX auxiliary-state cache is too small to serve any "
@@ -221,7 +222,7 @@ class MlxModelRunnerStub(ModelRunner):
         from sglang.srt.utils.torch_memory_saver_adapter import TorchMemorySaverAdapter
 
         self.memory_saver_adapter = TorchMemorySaverAdapter.create(
-            enable=self.server_args.enable_memory_saver
+            enable=get_exec().features.enable_memory_saver
         )
 
         # Load model (sets metadata only)
@@ -267,7 +268,7 @@ class MlxModelRunnerStub(ModelRunner):
                 # With the radix cache disabled no tree component exists to
                 # release auxiliary slots, so the pool owns their release
                 # (see MlxAuxiliaryStateReqToTokenPool docstring).
-                owns_auxiliary_state_release=self.server_args.disable_radix_cache,
+                owns_auxiliary_state_release=get_memory().disable_radix_cache,
             )
         else:
             self.req_to_token_pool = ReqToTokenPool(

python/sglang/srt/hardware_backend/mlx/tp_worker.py

@@ -31,6 +31,7 @@ from sglang.srt.model_executor.forward_batch_info import (
     ForwardBatch,
     PPProxyTensors,
 )
+from sglang.srt.runtime_context import get_memory, get_model, get_schedule
 
 logger = logging.getLogger(__name__)
 
@@ -53,19 +54,19 @@ class MlxTpModelWorker(TpModelWorker):
 
         logger.info("Initializing MlxModelRunner for end-to-end MLX inference")
         init_kwargs = dict(
-            model_path=self.server_args.model_path,
+            model_path=get_model().model_path,
-            trust_remote_code=self.server_args.trust_remote_code,
+            trust_remote_code=get_model().trust_remote_code,
-            disable_radix_cache=self.server_args.disable_radix_cache,
+            disable_radix_cache=get_memory().disable_radix_cache,
-            mem_fraction_static=self.server_args.mem_fraction_static,
+            mem_fraction_static=get_schedule().mem_fraction_static,
-            quantization=self.server_args.quantization,
+            quantization=get_model().quantization,
         )
-        if self.server_args.max_total_tokens is not None:
+        if get_schedule().max_total_tokens is not None:
-            init_kwargs["pool_size"] = self.server_args.max_total_tokens
+            init_kwargs["pool_size"] = get_schedule().max_total_tokens
         self._mlx_runner = MlxModelRunner(**init_kwargs)
 
         self._model_runner = MlxModelRunnerStub(
             model_config=self.model_config,
-            mem_fraction_static=self.server_args.mem_fraction_static,
+            mem_fraction_static=get_schedule().mem_fraction_static,
             gpu_id=self.gpu_id,
             ps=self.ps,
             nccl_port=self.nccl_port,

python/sglang/srt/hardware_backend/musa/attention/flashattention_backend.py

@@ -23,7 +23,7 @@ from sglang.srt.layers.utils.cp_utils import (
     cp_allgather_and_save_kv_cache,
 )
 from sglang.srt.mem_cache.memory_pool import KVWriteLoc
-from sglang.srt.runtime_context import get_server_args
+from sglang.srt.runtime_context import get_schedule
 
 if TYPE_CHECKING:
     from sglang.srt.layers.radix_attention import RadixAttention
@@ -515,7 +515,7 @@ class MusaFlashAttentionBackend(FlashAttentionBackend):
                 and not forward_batch.forward_mode.is_draft_extend_v2()
             ):
                 if forward_batch.attn_attend_prefix_cache:
-                    assert not get_server_args().disable_chunked_prefix_cache
+                    assert not get_schedule().disable_chunked_prefix_cache
                     assert forward_batch.prefix_chunk_idx is not None
                     assert forward_batch.prefix_chunk_cu_seq_lens is not None
                     assert forward_batch.prefix_chunk_max_seq_lens is not None

python/sglang/srt/hardware_backend/npu/attention/ascend_backend.py

@@ -26,7 +26,7 @@ from sglang.srt.layers.utils.cp_utils import cp_all_gather_rerange_kv_cache
 from sglang.srt.mem_cache.memory_pool import KVWriteLoc
 from sglang.srt.mem_cache.swa_memory_pool import SWAKVPool
 from sglang.srt.model_executor.forward_batch_info import ForwardBatch, ForwardMode
-from sglang.srt.runtime_context import get_flags
+from sglang.srt.runtime_context import get_flags, get_spec
 from sglang.srt.speculative.spec_info import SpecInput, SpecInputType
 from sglang.srt.utils import get_bool_env_var, get_current_device_stream_fast
 
@@ -336,9 +336,7 @@ class AscendAttnBackend(AttentionBackend):
         self.use_fa = get_bool_env_var("ASCEND_USE_FA", "False")
         self.use_fia = get_bool_env_var("ASCEND_USE_FIA", "False")
         self.enable_torch_compile = get_flags().capture.enable_torch_compile
-        self.speculative_num_draft_tokens = (
+        self.speculative_num_draft_tokens = get_spec().speculative_num_draft_tokens
-            model_runner.server_args.speculative_num_draft_tokens
-        )
         self.ascend_attn_mask_builder = AscendAttnMaskBuilder(
             model_runner, self.device, self.use_fia, self.use_mla
         )

python/sglang/srt/hardware_backend/npu/attention/ascend_dsv4_backend.py

@@ -13,7 +13,7 @@ from sglang.srt.layers.attention.dsv4.compressor import CompressorBackendMixin
 from sglang.srt.layers.attention.dsv4.indexer import C4IndexerBackendMixin
 from sglang.srt.model_executor.forward_batch_info import DSV4OutCacheLoc, ForwardMode
 from sglang.srt.model_executor.forward_context import get_attn_backend
-from sglang.srt.runtime_context import get_parallel
+from sglang.srt.runtime_context import get_parallel, get_spec
 
 if TYPE_CHECKING:
     from sglang.srt.layers.radix_attention import RadixAttention
@@ -1493,9 +1493,8 @@ class DeepseekV4AscendAttnBackend(
             or forward_batch.forward_mode.is_draft_extend_v2()
         ):
             B = forward_batch.batch_size
-            from sglang.srt.runtime_context import get_server_args
 
-            n_draft = get_server_args().speculative_num_draft_tokens or 1
+            n_draft = get_spec().speculative_num_draft_tokens or 1
             actual_q = torch.arange(
                 n_draft, B * n_draft + 1, n_draft, dtype=torch.int32, device=device
             )
@@ -1540,9 +1539,8 @@ class DeepseekV4AscendAttnBackend(
             forward_batch.forward_mode.is_target_verify()
             or forward_batch.forward_mode.is_draft_extend_v2()
         ):
-            from sglang.srt.runtime_context import get_server_args
 
-            max_seqlen_q = get_server_args().speculative_num_draft_tokens or 1
+            max_seqlen_q = get_spec().speculative_num_draft_tokens or 1
         else:
             max_seqlen_q = 1
         return self._kernel_metadata_from_parts(

python/sglang/srt/hardware_backend/npu/graph_runner/vit_npu_graph_runner.py

@@ -27,7 +27,7 @@ from sglang.srt.distributed.device_communicators.pynccl_allocator import (
 )
 from sglang.srt.layers.attention.vision import VisionAttention
 from sglang.srt.multimodal.vit_cuda_graph_runner import ViTCudaGraphRunner
-from sglang.srt.runtime_context import get_server_args
+from sglang.srt.runtime_context import get_mm
 
 
 class ViTNpuGraphRunner(ViTCudaGraphRunner):
@@ -70,7 +70,7 @@ class ViTNpuGraphRunner(ViTCudaGraphRunner):
         graph = torch_npu.npu.NPUGraph()
         vit = self.vit
 
-        override_backend = get_server_args().mm_attention_backend
+        override_backend = get_mm().mm_attention_backend
         with torch_npu.npu.graph(graph, pool=ViTNpuGraphRunner._graph_memory_pool):
             y = None
             deepstack_outs: List[torch.Tensor] = []

python/sglang/srt/hardware_backend/npu/moe/fuseep.py

@@ -17,7 +17,7 @@ from sglang.srt.environ import envs
 from sglang.srt.hardware_backend.npu.utils import npu_format_cast
 from sglang.srt.layers.moe.token_dispatcher.deepep import DeepEPBuffer
 from sglang.srt.layers.moe.utils import DeepEPMode
-from sglang.srt.runtime_context import get_server_args
+from sglang.srt.runtime_context import get_exec
 
 if TYPE_CHECKING:
     from sglang.srt.layers.moe.fused_moe_triton.layer import FusedMoE
@@ -57,7 +57,7 @@ def forward_fuseep(
             envs.SGLANG_DEEPEP_NUM_MAX_DISPATCH_TOKENS_PER_RANK.get()
         ),
         num_experts=layer.num_experts,
-        fuse_mode=get_server_args().fuseep_mode,
+        fuse_mode=get_exec().moe.fuseep_mode,
     )
     return hidden_states
 
@@ -126,7 +126,7 @@ def process_fuseep_weights(layer: torch.nn.Module, weight_prefix: str) -> None:
 
     Invoked by ``maybe_apply_fuseep_weights`` for both ``"w13"`` and ``"w2"``.
     """
-    if get_server_args().fuseep_mode == 1:
+    if get_exec().moe.fuseep_mode == 1:
         # -- The fused MoE optimization mode "1": dispatch_gmm_combine_decode --
         if weight_prefix == "w13":
             cpu_w13 = layer.w13_weight.data.transpose(1, 2).cpu()
@@ -143,7 +143,7 @@ def process_fuseep_weights(layer: torch.nn.Module, weight_prefix: str) -> None:
             layer.w2_weight_scale = torch.nn.Parameter(
                 w2_scale.to(torch.float32), requires_grad=False
             )
-    elif get_server_args().fuseep_mode == 2:
+    elif get_exec().moe.fuseep_mode == 2:
         # -- The fused MoE optimization mode "2": dispatch_ffn_combine --
         if weight_prefix == "w13":
             w13_weight = _release_weight_cache(layer.w13_weight)

python/sglang/srt/layers/activation.py

@@ -33,7 +33,7 @@ from sglang.srt.model_executor.cuda_graph_config import (
     Phase,
     check_cuda_graph_backend,
 )
-from sglang.srt.runtime_context import get_parallel, get_server_args
+from sglang.srt.runtime_context import get_exec, get_parallel
 from sglang.srt.utils import (
     cpu_has_amx_support,
     get_bool_env_var,
@@ -130,7 +130,7 @@ logger = logging.getLogger(__name__)
 class SiluAndMul(MultiPlatformOp):
     def __init__(self, *args, **kwargs):
         super().__init__(*args, **kwargs)
-        if get_server_args().rl_on_policy_target is not None:
+        if get_exec().deterministic.rl_on_policy_target is not None:
             self._forward_method = self.forward_native
         elif _use_aiter and envs.SGLANG_OPT_USE_AITER_SILU_MUL.get():
             self._forward_method = self.forward_aiter

python/sglang/srt/layers/attention/aiter_backend.py

@@ -1,6 +1,6 @@
 from __future__ import annotations
 
-from sglang.srt.runtime_context import get_parallel
+from sglang.srt.runtime_context import get_parallel, get_spec
 
 """
 end to end attention solution with aiter kernels
@@ -148,8 +148,8 @@ class AiterAttnBackend(AttentionBackend):
 
         self.device = model_runner.device
         self.is_multimodal = model_runner.model_config.is_multimodal
-        self.num_draft_tokens = model_runner.server_args.speculative_num_draft_tokens
+        self.num_draft_tokens = get_spec().speculative_num_draft_tokens
-        self.speculative_num_steps = model_runner.server_args.speculative_num_steps
+        self.speculative_num_steps = get_spec().speculative_num_steps
         self.topk = topk
         self.num_head = (
             model_runner.model_config.num_attention_heads // get_parallel().attn_tp_size

python/sglang/srt/layers/attention/deepseek_v4_backend.py

@@ -60,7 +60,7 @@ from sglang.srt.layers.attention.dsv4.sparse_prefill_utils import (
 from sglang.srt.layers.attention.verify_mask import VerifyMask, maybe_create_verify_mask
 from sglang.srt.mem_cache.deepseek_v4_memory_pool import DeepSeekV4TokenToKVPool
 from sglang.srt.model_executor.forward_batch_info import ForwardBatch, ForwardMode
-from sglang.srt.runtime_context import get_parallel
+from sglang.srt.runtime_context import get_parallel, get_spec
 from sglang.srt.speculative.eagle_utils import per_step_draft_out_cache_loc
 from sglang.srt.speculative.ragged_verify import (
     RaggedVerifyMode,
@@ -537,9 +537,7 @@ class DeepseekV4AttnBackend(
         assert self.topk in [0, 1], "MTP Topk > 1 not supported for DeepSeek V4"
         self.mtp_enabled = self.topk > 0
         self.speculative_num_steps = speculative_num_steps
-        self.speculative_num_draft_tokens: int = (
+        self.speculative_num_draft_tokens: int = get_spec().speculative_num_draft_tokens
-            model_runner.server_args.speculative_num_draft_tokens
-        )
         if self.speculative_num_draft_tokens is not None:
             # Persistent target-verify metadata buffers. Allocated here (not
             # lazily) so they are ordinary tensors: the first touch of a lazy

python/sglang/srt/layers/attention/deepseek_v4_backend_hip_radix.py

@@ -39,7 +39,7 @@ from sglang.srt.layers.attention.dsv4.metadata import (
 )
 from sglang.srt.mem_cache.deepseek_v4_memory_pool import DeepSeekV4TokenToKVPool
 from sglang.srt.model_executor.forward_batch_info import ForwardBatch, ForwardMode
-from sglang.srt.runtime_context import get_parallel
+from sglang.srt.runtime_context import get_parallel, get_spec
 from sglang.srt.speculative.eagle_utils import per_step_draft_out_cache_loc
 from sglang.srt.speculative.ragged_verify import resolve_ragged_verify_layout
 from sglang.srt.utils import ceil_align
@@ -455,9 +455,7 @@ class DeepseekV4HipRadixBackend(
         assert self.topk in [0, 1], "MTP Topk > 1 not supported for DeepSeek V4"
         self.mtp_enabled = self.topk > 0
         self.speculative_num_steps = speculative_num_steps
-        self.speculative_num_draft_tokens: int = (
+        self.speculative_num_draft_tokens: int = get_spec().speculative_num_draft_tokens
-            model_runner.server_args.speculative_num_draft_tokens
-        )
         self.speculative_step_id = speculative_step_id
         self.forward_metadata: Union[
             DSV4Metadata,

python/sglang/srt/layers/attention/dsa/dsa_indexer.py

@@ -37,7 +37,14 @@ from sglang.srt.model_executor.runner_backend_utils.tc_piecewise_cuda_graph impo
     get_tc_piecewise_forward_context,
     is_in_tc_piecewise_cuda_graph,
 )
-from sglang.srt.runtime_context import get_parallel, get_server_args
+from sglang.srt.runtime_context import (
+    get_device,
+    get_exec,
+    get_parallel,
+    get_schedule,
+    get_server_args,
+    get_spec,
+)
 from sglang.srt.state_capturer.indexer_topk import (
     maybe_capture_indexer_topk,
 )
@@ -163,7 +170,7 @@ def _uses_dsa_attention_backend(forward_batch: ForwardBatch) -> bool:
     ):
         backend_name = (
             decode_backend
-            if server_args.speculative_attention_mode == "decode"
+            if get_spec().speculative_attention_mode == "decode"
             else prefill_backend
         )
     else:
@@ -460,7 +467,7 @@ class Indexer(MultiPlatformOp):
             base=rope_theta,  # type: ignore
             rope_scaling=rope_scaling,
             is_neox_style=is_neox_style,
-            device=get_server_args().device,
+            device=get_device().device,
         )
         self.block_size = block_size
         self.scale_fmt = scale_fmt
@@ -471,7 +478,7 @@ class Indexer(MultiPlatformOp):
             self.num_local_tokens = getattr(config, "index_local_tokens", 0)
 
         self.paged_mqa_logits_backend = DSAPagedMQALogitsBackend.resolve(
-            get_server_args().dsa_paged_mqa_logits_backend
+            get_exec().kernel.dsa_paged_mqa_logits_backend
         )
 
     @contextlib.contextmanager
@@ -1066,7 +1073,7 @@ class Indexer(MultiPlatformOp):
         total_mem = torch.cuda.get_device_properties(device_index).total_memory
 
         total_mem_budget = int(total_mem * self._MQA_LOGITS_TOTAL_MEM_FRACTION)
-        mem_fraction_static = get_server_args().mem_fraction_static
+        mem_fraction_static = get_schedule().mem_fraction_static
         if mem_fraction_static is None:
             static_budget = total_mem_budget
         else:

python/sglang/srt/layers/attention/dsa_backend.py

@@ -15,7 +15,7 @@ from typing import (
 import torch
 
 from sglang.srt.configs.model_config import get_dsa_index_topk, is_deepseek_dsa
-from sglang.srt.runtime_context import get_parallel
+from sglang.srt.runtime_context import get_parallel, get_spec
 
 logger = logging.getLogger(__name__)
 from sglang.kernels.ops.attention.dsa.dequant_k_cache import (
@@ -469,9 +469,7 @@ class DeepseekSparseAttnBackend(
         # Speculative decoding
         self.topk = model_runner.server_args.speculative_eagle_topk or 0
         self.speculative_num_steps = speculative_num_steps
-        self.speculative_num_draft_tokens = (
+        self.speculative_num_draft_tokens = get_spec().speculative_num_draft_tokens
-            model_runner.server_args.speculative_num_draft_tokens
-        )
         self.speculative_step_id = speculative_step_id
         self.use_fused_topk = should_use_dsa_fused_topk(
             model_runner.server_args, seed_dsa_topk_from_draft_extend

python/sglang/srt/layers/attention/dsv4/indexer.py

@@ -40,7 +40,7 @@ from sglang.srt.model_executor.runner_backend_utils.breakable_cuda_graph.context
 from sglang.srt.model_executor.runner_backend_utils.tc_piecewise_cuda_graph import (
     is_in_tc_piecewise_cuda_graph,
 )
-from sglang.srt.runtime_context import get_parallel
+from sglang.srt.runtime_context import get_exec, get_parallel
 from sglang.srt.state_capturer.indexer_topk import get_global_indexer_capturer
 from sglang.srt.utils import add_prefix, is_cuda, is_hip, is_xpu
 from sglang.srt.utils.common import is_sm120_supported
@@ -922,9 +922,8 @@ class C4Indexer(nn.Module):
         self.rotary_emb = rotary_emb
         self.freqs_cis = freqs_cis
         self.weight_scale: float = self.softmax_scale * self.n_heads**-0.5
-        from sglang.srt.runtime_context import get_server_args
 
-        self.use_fp4_indexer = get_server_args().enable_deepseek_v4_fp4_indexer
+        self.use_fp4_indexer = get_exec().kernel.enable_deepseek_v4_fp4_indexer
         self.alt_streams = alt_streams
 
     def compute_q(

python/sglang/srt/layers/attention/flashattention_backend.py

@@ -30,7 +30,7 @@ from sglang.srt.layers.utils.cp_utils import (
 from sglang.srt.mem_cache.memory_pool import KVWriteLoc
 from sglang.srt.mem_cache.swa_memory_pool import SWAKVPool
 from sglang.srt.model_executor.forward_batch_info import ForwardBatch, ForwardMode
-from sglang.srt.runtime_context import get_server_args
+from sglang.srt.runtime_context import get_schedule, get_spec
 from sglang.srt.speculative.ragged_verify import build_ragged_target_verify_geometry
 from sglang.srt.speculative.spec_info import SpecInput, SpeculativeAlgorithm
 from sglang.srt.speculative.spec_utils import resolve_num_tokens_per_req
@@ -204,9 +204,7 @@ class FlashAttentionBackend(AttentionBackend):
 
         self.topk = model_runner.server_args.speculative_eagle_topk or 0
         self.speculative_num_steps = speculative_num_steps
-        self.speculative_num_draft_tokens = (
+        self.speculative_num_draft_tokens = get_spec().speculative_num_draft_tokens
-            model_runner.server_args.speculative_num_draft_tokens
-        )
         if (
             self.speculative_num_draft_tokens is not None
             and model_runner.is_draft_worker
@@ -1513,7 +1511,7 @@ class FlashAttentionBackend(AttentionBackend):
             ):
                 # Do multi-head attention with chunked prefix cache
                 if forward_batch.attn_attend_prefix_cache:
-                    assert not get_server_args().disable_chunked_prefix_cache
+                    assert not get_schedule().disable_chunked_prefix_cache
                     # MHA for chunked prefix kv cache when running model with MLA
                     assert forward_batch.prefix_chunk_idx is not None
                     assert forward_batch.prefix_chunk_cu_seq_lens is not None

python/sglang/srt/layers/attention/flashinfer_mla_backend.py

@@ -1,6 +1,6 @@
 from __future__ import annotations
 
-from sglang.srt.runtime_context import get_parallel
+from sglang.srt.runtime_context import get_disagg, get_exec, get_parallel, get_schedule
 
 """
 Support attention backend for flashinfer MLA.
@@ -33,7 +33,7 @@ from sglang.srt.model_executor.forward_batch_info import ForwardBatch, ForwardMo
 from sglang.srt.model_executor.runner_backend_utils.tc_piecewise_cuda_graph import (
     is_in_tc_piecewise_cuda_graph,
 )
-from sglang.srt.runtime_context import get_buffer, get_server_args
+from sglang.srt.runtime_context import get_buffer
 from sglang.srt.speculative.spec_info import SpecInput
 from sglang.srt.speculative.spec_utils import (
     draft_kv_indices_buffer_width,
@@ -224,9 +224,9 @@ class FlashInferMLAAttnBackend(AttentionBackend):
         self.token_to_kv_pool = model_runner.token_to_kv_pool
         self.enable_chunk_kv = (
             not skip_prefill
-            and get_server_args().disaggregation_mode != "decode"
+            and get_disagg().disaggregation_mode != "decode"
-            and not get_server_args().disable_chunked_prefix_cache
+            and not get_schedule().disable_chunked_prefix_cache
-            and not get_server_args().flashinfer_mla_disable_ragged
+            and not get_exec().kernel.flashinfer_mla_disable_ragged
         )
         self.page_size = model_runner.page_size
 
@@ -402,7 +402,7 @@ class FlashInferMLAAttnBackend(AttentionBackend):
             prefix_lens = forward_batch.extend_prefix_lens
             extend_no_prefix = not any(forward_batch.extend_prefix_lens_cpu)
             use_ragged = (
-                not get_server_args().flashinfer_mla_disable_ragged
+                not get_exec().kernel.flashinfer_mla_disable_ragged
                 and extend_no_prefix
                 # Piecewise cuda graph should use paged prefill to be compatible with prefix cache
                 and not is_in_tc_piecewise_cuda_graph()

python/sglang/srt/layers/attention/flashmla_backend.py

@@ -20,7 +20,7 @@ from sglang.kernels.ops.quantization.fp8_kernel import scaled_fp8_quant
 from sglang.srt.layers.attention.flashinfer_mla_backend import FlashInferMLAAttnBackend
 from sglang.srt.layers.attention.verify_mask import VerifyMask, maybe_create_verify_mask
 from sglang.srt.model_executor.forward_batch_info import ForwardBatch, ForwardMode
-from sglang.srt.runtime_context import get_parallel
+from sglang.srt.runtime_context import get_parallel, get_spec
 
 logger = logging.getLogger(__name__)
 
@@ -94,7 +94,7 @@ class FlashMLABackend(FlashInferMLAAttnBackend):
             torch.float8_e5m2,
         }
 
-        self.num_draft_tokens = model_runner.server_args.speculative_num_draft_tokens
+        self.num_draft_tokens = get_spec().speculative_num_draft_tokens
 
         self.cuda_graph_kv_indices = None
         self.cuda_graph_mla_metadata = None

python/sglang/srt/layers/attention/hybrid_linear_attn_backend.py

@@ -24,7 +24,7 @@ from sglang.srt.layers.radix_attention import RadixAttention
 from sglang.srt.mem_cache.memory_pool import HybridReqToTokenPool
 from sglang.srt.model_executor.forward_batch_info import ForwardBatch, ForwardMode
 from sglang.srt.model_executor.model_runner import ModelRunner
-from sglang.srt.runtime_context import get_server_args
+from sglang.srt.runtime_context import get_exec, get_memory, get_server_args
 from sglang.srt.speculative.eagle_info import EagleDraftInput, EagleVerifyInput
 from sglang.srt.speculative.spec_info import SpecInput
 
@@ -392,7 +392,7 @@ class MambaAttnBackendBase(AttentionBackend):
         """Per-row (length bs) bool flush mask = the radix track's seq_lens_cpu %
         mamba_track_interval == 0, so force-flush and snapshot fire on the same
         steps (no off-by-one)."""
-        interval = get_server_args().mamba_track_interval
+        interval = get_exec().mamba.mamba_track_interval
         if seq_lens_cpu is None:
             # Should not happen for the supported config; stay safe and never flush.
             return torch.zeros((bs,), dtype=torch.bool)
@@ -823,7 +823,7 @@ class Mamba2AttnBackend(MambaAttnBackendBase):
         # Page-major stores state strided; only the stride-aware Triton causal-conv
         # reads it (CUDA causal_conv1d garbles it). A model may also force Triton.
         use_triton_causal_conv = (
-            use_triton_causal_conv or get_server_args().enable_page_major_kv_layout
+            use_triton_causal_conv or get_memory().enable_page_major_kv_layout
         )
         layer_cache = self.req_to_token_pool.mamba2_layer_cache(layer_id)
         mixer_out, intermediate_states = mixer.forward(

python/sglang/srt/layers/attention/intel_amx_backend.py

@@ -8,6 +8,7 @@ from sglang.srt.layers.attention.base_attn_backend import AttentionBackend
 from sglang.srt.mem_cache.memory_pool import KVWriteLoc
 from sglang.srt.mem_cache.swa_memory_pool import SWAKVPool
 from sglang.srt.model_executor.forward_batch_info import ForwardBatch
+from sglang.srt.runtime_context import get_spec
 
 if TYPE_CHECKING:
     from sglang.srt.layers.radix_attention import RadixAttention
@@ -59,7 +60,7 @@ class IntelAMXAttnBackend(AttentionBackend):
         self.num_kv_splits = 8
 
         # speculative decoding params
-        self.num_draft_tokens = model_runner.server_args.speculative_num_draft_tokens
+        self.num_draft_tokens = get_spec().speculative_num_draft_tokens
 
     def _build_extend_metadata(self, forward_batch: ForwardBatch):
         """Resolve (seq_lens, extend_seq_lens, extend_start_loc, tree_mask) for

python/sglang/srt/layers/attention/linear/inkling_sconv_backend.py

@@ -60,7 +60,7 @@ from sglang.srt.models.inkling_common.kernels.sconv import (
     fused_extend_sconv_metadata,
     precompute_helion_extend_metadata,
 )
-from sglang.srt.runtime_context import get_server_args
+from sglang.srt.runtime_context import get_exec, get_server_args, get_spec
 from sglang.srt.speculative.eagle_info import EagleDraftExtendInput
 
 if TYPE_CHECKING:
@@ -117,7 +117,7 @@ class InklingShortConvAttnBackend(ShortConvAttnBackend):
         growing a buffer after a graph captured it moves the address that graph
         reads, and prefill captures before the decode runner reports its bounds."""
         server_args = get_server_args()
-        cuda_graph_config = server_args.cuda_graph_config
+        cuda_graph_config = get_exec().graph.cuda_graph_config
         decode_bs: list[int] = []
         prefill_tokens: list[int] = []
         decode_max_bs = 0
@@ -125,7 +125,7 @@ class InklingShortConvAttnBackend(ShortConvAttnBackend):
             decode_bs = list(cuda_graph_config.decode.bs or [])
             prefill_tokens = list(cuda_graph_config.prefill.bs or [])
             decode_max_bs = cuda_graph_config.decode.max_bs or 0
-        draft_token_num = server_args.speculative_num_draft_tokens or 1
+        draft_token_num = get_spec().speculative_num_draft_tokens or 1
         # req_to_token_pool.size is the runner's max_bs for both graph phases.
         max_bs = max([self.req_to_token_pool.size, decode_max_bs, *decode_bs])
         max_tokens = max([max_bs, *prefill_tokens, max_bs * draft_token_num])

python/sglang/srt/layers/attention/triton_backend.py

@@ -37,7 +37,7 @@ from sglang.srt.model_executor.cuda_graph_config import (
     cuda_graph_fully_disabled,
 )
 from sglang.srt.model_executor.forward_batch_info import ForwardBatch, ForwardMode
-from sglang.srt.runtime_context import get_parallel
+from sglang.srt.runtime_context import get_parallel, get_spec
 from sglang.srt.speculative.spec_utils import (
     draft_kv_indices_buffer_width,
     draft_kv_indices_used_len,
@@ -168,9 +168,9 @@ class TritonAttnBackend(AttentionBackend):
         self._translate_kv_loc = getattr(
             self.token_to_kv_pool_allocator, "translate_kv_loc_dense", None
         ) or getattr(self.token_to_kv_pool_allocator, "translate_kv_loc", None)
-        self.num_draft_tokens = model_runner.server_args.speculative_num_draft_tokens
+        self.num_draft_tokens = get_spec().speculative_num_draft_tokens
-        self.speculative_num_steps = model_runner.server_args.speculative_num_steps
+        self.speculative_num_steps = get_spec().speculative_num_steps
-        self.topk = model_runner.server_args.speculative_eagle_topk or 0
+        self.topk = get_spec().speculative_eagle_topk or 0
         # Split-KV verify is bit-equivalent only for a pure-causal chain (topk==1)
         # and is gfx95-only; else fall back to extend_attention_fwd.
         self.use_verify_splitkv = (

python/sglang/srt/layers/attention/trtllm_mha_backend.py

@@ -34,7 +34,7 @@ from sglang.srt.layers.radix_attention import AttentionType
 from sglang.srt.mem_cache.memory_pool import KVWriteLoc
 from sglang.srt.mem_cache.swa_memory_pool import SWAKVPool
 from sglang.srt.model_executor.forward_batch_info import ForwardBatch, ForwardMode
-from sglang.srt.runtime_context import get_buffer
+from sglang.srt.runtime_context import get_buffer, get_spec
 from sglang.srt.speculative.ragged_verify import (
     build_ragged_target_verify_geometry,
     resolve_ragged_verify_layout,
@@ -162,9 +162,7 @@ class TRTLLMHAAttnBackend(FlashInferAttnBackend):
         self.speculative_step_id = speculative_step_id
         self.target_verify_metadata = {}
 
-        self.speculative_num_draft_tokens = (
+        self.speculative_num_draft_tokens = get_spec().speculative_num_draft_tokens
-            model_runner.server_args.speculative_num_draft_tokens
-        )
         # True iff the model declares ENCODER_ONLY (bidirectional) layers, which
         # need the expanded TARGET_VERIFY metadata (TRTLLMMHAMetadata.encoder_*).
         self.expand_encoder_only_verify = any(

python/sglang/srt/layers/attention/trtllm_mla_backend.py

@@ -41,7 +41,12 @@ from sglang.srt.model_executor.forward_batch_info import ForwardBatch, ForwardMo
 from sglang.srt.model_executor.runner_backend_utils.tc_piecewise_cuda_graph import (
     is_in_tc_piecewise_cuda_graph,
 )
-from sglang.srt.runtime_context import get_buffer, get_parallel, get_server_args
+from sglang.srt.runtime_context import (
+    get_buffer,
+    get_parallel,
+    get_schedule,
+    get_spec,
+)
 from sglang.srt.utils import is_flashinfer_available, is_float4_e2m1fn_x2
 
 if is_flashinfer_available():
@@ -238,11 +243,9 @@ class TRTLLMMLABackend(FlashInferMLAAttnBackend):
         self.forward_prefill_metadata: Optional[TRTLLMMLAPrefillMetadata] = None
         self.forward_decode_metadata: Union[TRTLLMMLADecodeMetadata, None] = None
 
-        self.disable_chunked_prefix_cache = (
+        self.disable_chunked_prefix_cache = get_schedule().disable_chunked_prefix_cache
-            get_server_args().disable_chunked_prefix_cache
-        )
 
-        self.num_draft_tokens = model_runner.server_args.speculative_num_draft_tokens
+        self.num_draft_tokens = get_spec().speculative_num_draft_tokens
         self._verify_mask = None
         # Tree-mask scratch is fetched from the target backend only.
         self.is_draft_runner = model_runner.is_draft_worker

python/sglang/srt/layers/attention/vision.py

@@ -17,7 +17,7 @@ from sglang.kernels.ops.layernorm.norm import (
 )
 from sglang.srt.environ import envs
 from sglang.srt.models.utils import apply_qk_norm
-from sglang.srt.runtime_context import get_parallel
+from sglang.srt.runtime_context import get_exec, get_mm, get_parallel
 from sglang.srt.utils import (
     cpu_has_amx_support,
     get_bool_env_var,
@@ -88,7 +88,6 @@ from sglang.srt.layers.linear import (
 from sglang.srt.layers.quantization import QuantizationConfig
 from sglang.srt.layers.rotary_embedding import apply_rotary_pos_emb
 from sglang.srt.layers.rotary_embedding.utils import apply_rotary_pos_emb_native_eager
-from sglang.srt.runtime_context import get_server_args
 from sglang.srt.utils import add_prefix
 
 _use_aiter = get_bool_env_var("SGLANG_USE_AITER") and _is_hip
@@ -1047,7 +1046,7 @@ class VisionAttention(nn.Module):
         # Select attention backend via a unified method
         _passed_backend = qkv_backend
         qkv_backend = self._determine_attention_backend(_passed_backend)
-        if get_server_args().mm_attention_backend is None and _passed_backend is None:
+        if get_mm().mm_attention_backend is None and _passed_backend is None:
             print_info_once(f"Multimodal attention backend not set. Use {qkv_backend}.")
         print_info_once(f"Using {qkv_backend} as multimodal attention backend.")
 
@@ -1126,7 +1125,7 @@ class VisionAttention(nn.Module):
                 weight_dtype=torch.float32,
                 cast_x_before_out_mul=True,
             )
-            if get_server_args().rl_on_policy_target is not None
+            if get_exec().deterministic.rl_on_policy_target is not None
             else {}
         )
         q_norm = RMSNorm(
@@ -1154,7 +1153,7 @@ class VisionAttention(nn.Module):
         - CUDA (other): "triton_attn"
         - Non-CUDA: "sdpa"
         """
-        override_backend = get_server_args().mm_attention_backend
+        override_backend = get_mm().mm_attention_backend
         if override_backend is not None:
             backend = override_backend
         elif passed_backend is not None:
@@ -1259,7 +1258,7 @@ class VisionAttention(nn.Module):
             x = x.unsqueeze(0)
         assert x.dim() == 3, x.shape
         if (
-            get_server_args().rl_on_policy_target is not None
+            get_exec().deterministic.rl_on_policy_target is not None
             and position_embeddings is not None
         ):
             assert isinstance(position_embeddings, tuple), (

python/sglang/srt/layers/attention/wave_backend.py

@@ -13,7 +13,7 @@ from sglang.kernels.ops.kvcache.kv_indices import (
 )
 from sglang.srt.layers.attention.base_attn_backend import AttentionBackend
 from sglang.srt.model_executor.forward_batch_info import ForwardBatch, ForwardMode
-from sglang.srt.runtime_context import get_parallel
+from sglang.srt.runtime_context import get_parallel, get_spec
 from sglang.srt.utils import get_bool_env_var, get_device_core_count
 
 if TYPE_CHECKING:
@@ -92,7 +92,7 @@ class WaveAttnBackend(AttentionBackend):
                 (max_bs + 1,), dtype=torch.int64, device=model_runner.device
             )
 
-        self.num_draft_tokens = model_runner.server_args.speculative_num_draft_tokens
+        self.num_draft_tokens = get_spec().speculative_num_draft_tokens
 
         self.num_head = (
             model_runner.model_config.num_attention_heads // get_parallel().attn_tp_size

python/sglang/srt/layers/attention/xpu_backend.py

@@ -15,7 +15,7 @@ from sglang.srt.layers.attention.flashattention_backend import (
 from sglang.srt.mem_cache.memory_pool import KVWriteLoc
 from sglang.srt.mem_cache.swa_memory_pool import SWAKVPool
 from sglang.srt.model_executor.forward_batch_info import ForwardBatch, ForwardMode
-from sglang.srt.runtime_context import get_server_args
+from sglang.srt.runtime_context import get_schedule, get_spec
 
 if TYPE_CHECKING:
     from sglang.srt.layers.radix_attention import RadixAttention
@@ -86,9 +86,7 @@ class XPUAttentionBackend(AttentionBackend):
             )
         self.topk = model_runner.server_args.speculative_eagle_topk or 0
         self.speculative_num_steps = speculative_num_steps
-        self.speculative_num_draft_tokens = (
+        self.speculative_num_draft_tokens = get_spec().speculative_num_draft_tokens
-            model_runner.server_args.speculative_num_draft_tokens
-        )
         self.speculative_step_id = speculative_step_id
 
         # Local attention settings
@@ -638,7 +636,7 @@ class XPUAttentionBackend(AttentionBackend):
             ):
                 # Do multi-head attention with chunked prefix cache
                 if forward_batch.attn_attend_prefix_cache:
-                    assert not get_server_args().disable_chunked_prefix_cache
+                    assert not get_schedule().disable_chunked_prefix_cache
                     # MHA for chunked prefix kv cache when running model with MLA
                     assert forward_batch.prefix_chunk_idx is not None
                     assert forward_batch.prefix_chunk_cu_seq_lens is not None

python/sglang/srt/layers/communicator.py

@@ -73,7 +73,13 @@ from sglang.srt.model_executor.cuda_graph_config import (
     check_cuda_graph_backend,
 )
 from sglang.srt.model_executor.forward_batch_info import ForwardBatch
-from sglang.srt.runtime_context import get_forward, get_parallel, get_server_args
+from sglang.srt.runtime_context import (
+    get_exec,
+    get_forward,
+    get_parallel,
+    get_server_args,
+    get_spec,
+)
 from sglang.srt.speculative.spec_info import SpeculativeAlgorithm
 from sglang.srt.utils import (
     get_bool_env_var,
@@ -169,7 +175,7 @@ def apply_flashinfer_allreduce_fusion(batch_size: int):
         (_is_sm90_supported or _is_sm100_supported)
         and _is_flashinfer_available
         and not is_dp_attention_enabled()
-        and get_server_args().flashinfer_allreduce_fusion_backend is not None
+        and get_exec().comm.flashinfer_allreduce_fusion_backend is not None
         and not is_flashinfer_allreduce_unavailable()
         # Symbolic size checks stay last: under Dynamo tracing they guard on
         # the dynamic token dim, so statically-off configs must short-circuit
@@ -190,7 +196,7 @@ def apply_aiter_all_reduce_fusion(input_tensor: torch.Tensor):
         and total_bytes <= 8 * 1024 * 8192
         and get_parallel().tp_size != 6
         and not is_dp_attention_enabled()
-        and get_server_args().enable_aiter_allreduce_fusion
+        and get_exec().comm.enable_aiter_allreduce_fusion
     )
 
 
@@ -278,7 +284,7 @@ class AttnTpContext:
             and get_moe_a2a_backend().is_none()
             and not enable_moe_dense_fully_dp()
             and not check_cuda_graph_backend(Phase.PREFILL, Backend.TC_PIECEWISE)
-            and get_server_args().speculative_algorithm != "EAGLE3"
+            and get_spec().speculative_algorithm != "EAGLE3"
         )
         if get_server_args().enable_attn_tp_input_scattered:
             if not self.allow_input_scattered:
@@ -411,7 +417,7 @@ class LayerScatterModes:
             not context.is_layer_sparse
             and context.is_next_layer_sparse
             and enable_moe_dense_fully_dp()
-            and get_server_args().enable_two_batch_overlap
+            and get_exec().overlap.enable_two_batch_overlap
         )
 
     @classmethod
@@ -475,7 +481,7 @@ class LayerCommunicator:
         )
         self._post_init_communicate()
         self._speculative_algo = SpeculativeAlgorithm.from_string(
-            get_server_args().speculative_algorithm
+            get_spec().speculative_algorithm
         )
 
     def _post_init_communicate(self):
@@ -846,7 +852,7 @@ class LayerCommunicator:
                     and get_parallel().tp_size != 6
                     and not is_dp_attention_enabled()
                     and get_moe_a2a_backend().is_none()
-                    and get_server_args().enable_aiter_allreduce_fusion
+                    and get_exec().comm.enable_aiter_allreduce_fusion
                 )
             )
             and (not self.is_last_layer)
@@ -1151,7 +1157,7 @@ class CommunicateWithAllReduceAndLayerNormFn:
             if not handled:
                 quantize_communications = (
                     not forward_batch.forward_mode.is_decode_or_idle()
-                    and get_server_args().enable_quant_communications
+                    and get_exec().comm.enable_quant_communications
                 )
                 if quantize_communications:
                     hidden_states = attention_tensor_model_parallel_quant_all_reduce(

python/sglang/srt/layers/cp/zigzag.py

@@ -53,7 +53,7 @@ from sglang.srt.layers.dp_attention import (
 )
 from sglang.srt.mem_cache.memory_pool import KVWriteLoc
 from sglang.srt.model_executor.forward_context import get_token_to_kv_pool
-from sglang.srt.runtime_context import get_parallel
+from sglang.srt.runtime_context import get_device, get_parallel
 
 
 @dataclass
@@ -208,10 +208,8 @@ class ZigzagCPStrategy(ContextParallelStrategy):
             actual_seq_q_prev_list.append(block_sizes[cp_rank])
             actual_seq_q_next_list.append(block_sizes[cp_segment_num - cp_rank - 1])
 
-        from sglang.srt.runtime_context import get_server_args
-
         try:
-            device = torch.device(get_server_args().device)
+            device = torch.device(get_device().device)
         except Exception:
             device = torch.device("cuda" if torch.cuda.is_available() else "cpu")
         cu_prev = [0] + list(accumulate(actual_seq_q_prev_list))

python/sglang/srt/layers/dcp/planner.py

@@ -26,7 +26,7 @@ from sglang.kernels.ops.attention.dcp_kernels import (
 )
 from sglang.srt.layers.dcp.layout import update_local_kv_lens_for_dcp
 from sglang.srt.layers.dcp.metadata import DecodeContextParallelMetadata
-from sglang.srt.runtime_context import get_parallel, get_server_args
+from sglang.srt.runtime_context import get_device, get_parallel
 
 
 def prepare_decode_context_parallel_metadata(
@@ -53,12 +53,12 @@ def prepare_decode_context_parallel_metadata(
     extend_prefix_starts = torch.zeros(
         len(seq_lens),
         dtype=torch.int32,
-        device=get_server_args().device,
+        device=get_device().device,
     )
     extend_cu_prefix_lens = torch.zeros(
         len(seq_lens) + 1,
         dtype=torch.int32,
-        device=get_server_args().device,
+        device=get_device().device,
     )
     extend_cu_prefix_lens[1:] = torch.cumsum(extend_prefix_lens, dim=0)
     extend_cu_prefix_lens = extend_cu_prefix_lens[:-1]
@@ -67,7 +67,7 @@ def prepare_decode_context_parallel_metadata(
     dcp_prefix_kv_indices = torch.empty(
         sum(extend_prefix_lens_cpu),
         dtype=torch.int32,
-        device=get_server_args().device,
+        device=get_device().device,
     )
     create_chunked_prefix_cache_kv_indices_fn[(len(seq_lens),)](
         req_to_token,
@@ -81,20 +81,20 @@ def prepare_decode_context_parallel_metadata(
     dcp_kv_indptr = torch.zeros(
         len(seq_lens) + 1,
         dtype=torch.int32,
-        device=get_server_args().device,
+        device=get_device().device,
     )
     dcp_kv_indptr[1:] = seq_lens.cumsum(dim=0)
     dcp_kv_indptr = dcp_kv_indptr[: (len(seq_lens) + 1)]
     dcp_kv_indices = torch.zeros(
         seq_lens_sum,
         dtype=torch.int32,
-        device=get_server_args().device,
+        device=get_device().device,
     )
 
     extend_cu_lens = torch.zeros(
         len(seq_lens) + 1,
         dtype=torch.int32,
-        device=get_server_args().device,
+        device=get_device().device,
     )
     extend_cu_lens[1:] = torch.cumsum(extend_seq_lens, dim=0)
     extend_cu_lens = extend_cu_lens[:-1]

python/sglang/srt/layers/layernorm.py

@@ -32,7 +32,7 @@ from sglang.srt.model_executor.cuda_graph_config import (
     Phase,
     check_cuda_graph_backend,
 )
-from sglang.srt.runtime_context import get_parallel, get_server_args
+from sglang.srt.runtime_context import get_exec, get_parallel
 from sglang.srt.utils import (
     cpu_has_amx_support,
     get_bool_env_var,
@@ -223,7 +223,7 @@ def _forward_with_allreduce_fusion(
                     return fused_result
 
             # For AITER route, preserve correctness when fused path is unavailable.
-            if _use_aiter and get_server_args().enable_aiter_allreduce_fusion:
+            if _use_aiter and get_exec().comm.enable_aiter_allreduce_fusion:
                 x = tensor_model_parallel_all_reduce(x)
                 return norm_module.forward(x, residual, None)
 
@@ -425,7 +425,7 @@ class RMSNorm(MultiPlatformOp):
             if (
                 residual is not None
                 or self.cast_x_before_out_mul
-                or get_server_args().rl_on_policy_target == "fsdp"
+                or get_exec().deterministic.rl_on_policy_target == "fsdp"
             ):
                 return self.forward_native(x, residual, post_residual_addition)
             out = rms_norm_batch_invariant(
@@ -532,7 +532,7 @@ class RMSNorm(MultiPlatformOp):
             if (
                 residual is not None
                 or self.cast_x_before_out_mul
-                or get_server_args().rl_on_policy_target == "fsdp"
+                or get_exec().deterministic.rl_on_policy_target == "fsdp"
                 or (self._fused_pad_kernel is not None and self.x_pad_to_multiple > 0)
             ):
                 return self.forward_native(x, residual, post_residual_addition)
@@ -593,7 +593,7 @@ class RMSNorm(MultiPlatformOp):
             if (
                 residual is not None
                 or self.cast_x_before_out_mul
-                or get_server_args().rl_on_policy_target == "fsdp"
+                or get_exec().deterministic.rl_on_policy_target == "fsdp"
             ):
                 return self.forward_native(x, residual, post_residual_addition)
             return rms_norm_batch_invariant(
@@ -720,7 +720,10 @@ class RMSNorm(MultiPlatformOp):
         if self.variance_size_override is not None:
             return self.forward_native(x, residual, post_residual_addition)
         if is_batch_invariant_mode_enabled():
-            if residual is not None or get_server_args().rl_on_policy_target == "fsdp":
+            if (
+                residual is not None
+                or get_exec().deterministic.rl_on_policy_target == "fsdp"
+            ):
                 return self.forward_native(x, residual, post_residual_addition)
             return rms_norm_batch_invariant(
                 x,

python/sglang/srt/layers/linear.py

@@ -39,7 +39,7 @@ from sglang.srt.layers.parameter import (
     _ColumnvLLMParameter,
 )
 from sglang.srt.layers.utils import pad_or_narrow_weight
-from sglang.srt.runtime_context import get_parallel, get_server_args
+from sglang.srt.runtime_context import get_exec, get_parallel
 from sglang.srt.utils import get_bool_env_var, is_cpu, is_hip, is_npu, set_weight_attrs
 
 if TYPE_CHECKING:
@@ -1597,7 +1597,7 @@ class RowParallelLinear(LinearBase):
                 quantize_communications = (
                     (
                         not forward_batch.forward_mode.is_decode_or_idle()
-                        and get_server_args().enable_quant_communications
+                        and get_exec().comm.enable_quant_communications
                     )
                     if forward_batch is not None
                     else False

python/sglang/srt/layers/logits_processor.py

@@ -51,7 +51,7 @@ from sglang.srt.model_executor.forward_batch_info import (
     ForwardBatch,
     ForwardMode,
 )
-from sglang.srt.runtime_context import get_parallel, get_server_args
+from sglang.srt.runtime_context import get_exec, get_parallel, get_server_args
 from sglang.srt.utils.common import (
     is_cpu,
     is_npu,
@@ -350,7 +350,7 @@ class LogitsProcessor(nn.Module):
         self.vocab_size = config.vocab_size
         self.logit_scale = logit_scale
         self.use_attn_tp_group = get_server_args().enable_dp_lm_head
-        self.use_fp32_lm_head = get_server_args().enable_fp32_lm_head
+        self.use_fp32_lm_head = get_exec().features.enable_fp32_lm_head
         if self.use_attn_tp_group:
             self.attn_tp_size = get_parallel().attn_tp_size
             self.do_tensor_parallel_all_gather = (
@@ -374,8 +374,8 @@ class LogitsProcessor(nn.Module):
             self.final_logit_softcapping = None
 
         self.return_full_logits = return_full_logits
-        self.enable_mis = get_server_args().enable_mis
+        self.enable_mis = get_exec().features.enable_mis
-        self.rl_on_policy_target = get_server_args().rl_on_policy_target
+        self.rl_on_policy_target = get_exec().deterministic.rl_on_policy_target
 
         self._logits_gatherer = triton_symm_mem_ag.MultimemAllGatherer(
             max_tokens=triton_symm_mem_ag.recommended_max_tokens(

python/sglang/srt/layers/moe/fused_moe_triton/layer.py

@@ -71,6 +71,7 @@ from sglang.srt.model_executor.runner_backend_utils.tc_piecewise_cuda_graph impo
 )
 from sglang.srt.model_loader.weight_utils import narrow_padded_param_and_loaded_weight
 from sglang.srt.runtime_context import (
+    get_exec,
     get_global_dwdp_manager,
     get_parallel,
     get_server_args,
@@ -260,7 +261,7 @@ class FusedMoE(torch.nn.Module):
 
         self._num_global_routed = num_experts - num_shared_slots
         server_args = get_server_args()
-        if server_args.ep_join_mode == "scale":
+        if get_exec().moe.ep_join_mode == "scale":
             storage_ep_size = server_args.elastic_ep_initial_size
             assert storage_ep_size is not None
             self._expert_storage_rank = (
@@ -359,7 +360,7 @@ class FusedMoE(torch.nn.Module):
         print_info_once(
             "FlashInfer TRTLLM MoE deferred finalize is "
             f"{'enabled' if self.supports_deferred_finalize else 'disabled'} "
-            f"(moe_runner_backend={server_args.moe_runner_backend}, "
+            f"(moe_runner_backend={get_exec().moe.moe_runner_backend}, "
             f"quant_method={type(self.quant_method).__name__})."
         )
 

python/sglang/srt/layers/moe/hash_topk.py

@@ -22,6 +22,7 @@ from sglang.srt.layers.moe.topk import (
     remap_topk_for_per_rank_shared_slots,
 )
 from sglang.srt.layers.moe.utils import has_per_rank_fused_shared_slots
+from sglang.srt.runtime_context import get_exec
 from sglang.srt.utils import is_hip, is_npu
 
 logger = logging.getLogger(__name__)
@@ -44,10 +45,9 @@ class HashTopK(nn.Module):
     ):
         super().__init__()
         self.layer_id = layer_id
-        from sglang.srt.runtime_context import get_server_args
 
         self.enable_waterfill = (
-            num_fused_shared_experts > 0 and get_server_args().enable_waterfill
+            num_fused_shared_experts > 0 and get_exec().moe.enable_waterfill
         )
         self.waterfill_balancer = None
 

python/sglang/srt/layers/moe/moe_runner/triton_utils/fused_moe.py

@@ -28,7 +28,7 @@ from sglang.srt.environ import envs
 from sglang.srt.layers.dp_attention import is_allocation_symmetric
 from sglang.srt.layers.moe.moe_runner import MoeRunnerConfig
 from sglang.srt.layers.moe.utils import get_moe_padding_size
-from sglang.srt.runtime_context import get_server_args
+from sglang.srt.runtime_context import get_exec
 from sglang.srt.utils import (
     cpu_has_amx_support,
     get_bool_env_var,
@@ -531,7 +531,7 @@ def _fused_moe_kernel_sequence(
             out_hidden_states = torch.empty_like(hidden_states)
 
     use_fused_moe_sum_all_reduce = (
-        get_server_args().enable_fused_moe_sum_all_reduce
+        get_exec().moe.enable_fused_moe_sum_all_reduce
         and (not no_combine)
         and (topk > 2)
         and (not use_int8_w8a16)

python/sglang/srt/layers/moe/moe_runner/triton_utils/fused_moe_triton_config.py

@@ -9,7 +9,7 @@ from typing import Any, Dict, List, Optional, Tuple
 import torch
 import triton
 
-from sglang.srt.runtime_context import get_server_args
+from sglang.srt.runtime_context import get_exec
 from sglang.srt.utils import get_device_name, is_hip
 
 logger = logging.getLogger(__name__)
@@ -69,7 +69,7 @@ def get_moe_configs(
     kernel on a given batch size bs, the closest batch size in the grid should
     be picked and the associated configuration chosen to invoke the kernel.
     """
-    if get_server_args().enable_deterministic_inference:
+    if get_exec().deterministic.enable_deterministic_inference:
         logger.warning(
             "Deterministic inference is enabled, using default MoE kernel config."
         )
@@ -187,7 +187,7 @@ def get_default_config(
     is_marlin: bool,
     block_shape: Optional[List[int]] = None,
 ) -> Dict[str, int]:
-    if get_server_args().enable_deterministic_inference:
+    if get_exec().deterministic.enable_deterministic_inference:
         config = {
             "BLOCK_SIZE_M": 64,
             "BLOCK_SIZE_N": 64,

python/sglang/srt/layers/moe/token_dispatcher/flashinfer.py

@@ -27,7 +27,7 @@ from sglang.srt.layers.moe.topk import (
     TopKOutputChecker,
 )
 from sglang.srt.layers.moe.utils import get_moe_runner_backend
-from sglang.srt.runtime_context import get_server_args
+from sglang.srt.runtime_context import get_schedule, get_spec
 from sglang.srt.speculative.spec_info import SpeculativeAlgorithm
 from sglang.srt.utils import get_int_env_var
 
@@ -123,7 +123,7 @@ class FlashinferDispatcher(BaseDispatcher):
         # max_running_requests is not yet resolved at model-construction time,
         # so we use 4096 as a floor to cover decode batches and _dummy_run
         # (which warms up at batch_size = req_to_token_pool.size).
-        cps = get_server_args().chunked_prefill_size
+        cps = get_schedule().chunked_prefill_size
         default_max_tokens = max(cps if cps and cps > 0 else 4096, 4096)
         self.max_num_tokens = get_int_env_var(
             "SGLANG_FLASHINFER_NUM_MAX_DISPATCH_TOKENS_PER_RANK",
@@ -132,7 +132,7 @@ class FlashinferDispatcher(BaseDispatcher):
 
         # Calculate workspace size. For eagle mode, use the larger workspace size since nextn layer will be unquantized.
         speculative_algo = SpeculativeAlgorithm.from_string(
-            get_server_args().speculative_algorithm
+            get_spec().speculative_algorithm
         )
         if MOE_NVFP4_DISPATCH and not speculative_algo.is_eagle():
             total_dispatch_payload_size_per_token = (

python/sglang/srt/layers/moe/topk.py

@@ -32,7 +32,7 @@ from typing import (
 import torch
 import torch.nn.functional as F
 
-from sglang.srt.runtime_context import get_parallel
+from sglang.srt.runtime_context import get_exec, get_lora, get_parallel
 
 try:
     from triton_kernels.matmul_ogs import GatherIndx, RoutingData, ScatterIndx
@@ -430,10 +430,9 @@ class TopK(MultiPlatformOp):
             assert num_expert_group is not None and topk_group is not None
 
         self.layer_id = layer_id
-        from sglang.srt.runtime_context import get_server_args
 
         self.enable_waterfill = (
-            num_fused_shared_experts > 0 and get_server_args().enable_waterfill
+            num_fused_shared_experts > 0 and get_exec().moe.enable_waterfill
         )
 
         self.waterfill_balancer = None
@@ -507,9 +506,8 @@ class TopK(MultiPlatformOp):
         # ===== TO BE REFACTORED ====
         elif get_moe_runner_backend().is_experimental_sgl_trtllm():
             try:
-                from sglang.srt.runtime_context import get_server_args
 
-                use_standard_for_lora = bool(get_server_args().enable_lora)
+                use_standard_for_lora = bool(get_lora().enable_lora)
             except ValueError:
                 use_standard_for_lora = False
             output_format = (
@@ -1362,9 +1360,9 @@ def _eplb_remap_enabled() -> bool:
         # there is no EPLB mapping, so the remap must be skipped.
         return False
     return (
-        server_args.enable_eplb
+        get_exec().moe.enable_eplb
-        or server_args.init_expert_location != "trivial"
+        or get_exec().moe.init_expert_location != "trivial"
-        or server_args.ep_num_redundant_experts > 0
+        or get_exec().moe.ep_num_redundant_experts > 0
     )
 
 

python/sglang/srt/layers/moe/utils.py

@@ -12,7 +12,7 @@ from sglang.srt.environ import envs
 from sglang.srt.layers.dp_attention import (
     is_dp_attention_enabled,
 )
-from sglang.srt.runtime_context import get_flags, get_forward, get_parallel
+from sglang.srt.runtime_context import get_exec, get_flags, get_forward, get_parallel
 from sglang.srt.utils import is_cuda, is_npu
 
 _is_npu = is_npu()
@@ -239,8 +239,8 @@ def get_deepep_output_dtype(self) -> DispatcherOutputDtype:
 
     # 0. Parse server argument.
     server_args = get_server_args()
-    if server_args and server_args.deepep_dispatcher_output_dtype != "auto":
+    if server_args and get_exec().moe.deepep_dispatcher_output_dtype != "auto":
-        return DispatcherOutputDtype(server_args.deepep_dispatcher_output_dtype)
+        return DispatcherOutputDtype(get_exec().moe.deepep_dispatcher_output_dtype)
 
     # 1. Parse deprecated environment variables.
     if envs.SGLANG_DEEPEP_BF16_DISPATCH.get():

python/sglang/srt/layers/quantization/fp8_utils.py

@@ -13,7 +13,7 @@ from sglang.kernels.ops.quantization.fp8_kernel import (
 )
 from sglang.srt.layers import deep_gemm_wrapper
 from sglang.srt.layers.quantization.mxfp4_tensor import MXFP4QuantizeUtil
-from sglang.srt.runtime_context import get_parallel
+from sglang.srt.runtime_context import get_exec, get_parallel
 from sglang.srt.utils.common import torch_release
 
 if TYPE_CHECKING:
@@ -34,7 +34,6 @@ from sglang.kernels.ops.quantization.fp8_kernel import (
     w8a8_block_fp8_matmul_deepgemm,
     w8a8_block_fp8_matmul_triton,
 )
-from sglang.srt.runtime_context import get_server_args
 from sglang.srt.utils import (
     ceil_align,
     ceil_div,
@@ -1844,7 +1843,7 @@ def apply_fp8_linear(
         if (
             input_scale is not None
             and input_scale.numel() == 1
-            and get_server_args().cuda_graph_config.prefill.tc_compiler == "inductor"
+            and get_exec().graph.cuda_graph_config.prefill.tc_compiler == "inductor"
         ):
             qinput = (
                 (input_2d * input_scale.reciprocal())

python/sglang/srt/layers/quantization/mxfp4.py

@@ -48,7 +48,7 @@ from sglang.srt.layers.quantization.base_config import (
     QuantizeMethodBase,
 )
 from sglang.srt.layers.quantization.utils import is_layer_skipped
-from sglang.srt.runtime_context import get_server_args
+from sglang.srt.runtime_context import get_exec
 from sglang.srt.utils import (
     cpu_has_amx_support,
     is_cpu,
@@ -333,7 +333,7 @@ class Mxfp4MoEMethod(FusedMoEMethodBase):
         self.use_flashinfer = get_moe_runner_backend().is_flashinfer_mxfp4()
         self.use_marlin = get_moe_runner_backend().is_marlin()
         self.flashinfer_mxfp4_moe_precision = (
-            get_server_args().flashinfer_mxfp4_moe_precision
+            get_exec().moe.flashinfer_mxfp4_moe_precision
         )
         # When `flashinfer_mxfp4` is enabled, dispatch to one of three FlashInfer
         # entry points depending on the GPU:

python/sglang/srt/layers/quantization/mxfp4_flashinfer_trtllm_moe.py

@@ -14,7 +14,7 @@ from sglang.srt.distributed.device_communicators.pynccl_allocator import (
 )
 from sglang.srt.layers.dp_attention import is_allocation_symmetric
 from sglang.srt.layers.moe.utils import RoutingMethodType
-from sglang.srt.runtime_context import get_server_args
+from sglang.srt.runtime_context import get_exec
 from sglang.srt.utils import (
     is_flashinfer_available,
     log_info_on_rank0,
@@ -51,7 +51,7 @@ class Mxfp4FlashinferTrtllmMoEMethod:
         self._fp8 = fp8_method
         self.prefix = prefix
         self.flashinfer_mxfp4_moe_precision = (
-            get_server_args().flashinfer_mxfp4_moe_precision
+            get_exec().moe.flashinfer_mxfp4_moe_precision
         )
 
     def create_moe_runner(self, layer, moe_runner_config):

python/sglang/srt/layers/rotary_embedding/base.py

@@ -11,7 +11,7 @@ from sglang.srt.environ import envs
 from sglang.srt.layers.rotary_embedding.utils import apply_rotary_emb
 from sglang.srt.layers.utils import MultiPlatformOp
 from sglang.srt.platforms import current_platform
-from sglang.srt.runtime_context import get_server_args
+from sglang.srt.runtime_context import get_exec
 from sglang.srt.utils import (
     cpu_has_amx_support,
     get_bool_env_var,
@@ -129,7 +129,7 @@ class RotaryEmbedding(MultiPlatformOp):
         self._apply_rotary_emb_wrapped = apply_rotary_emb
 
         # XXX (MUSA): Implement sgl_kernel.rotary_embedding support for MUSA backend
-        if get_server_args().rl_on_policy_target is not None or _is_musa:
+        if get_exec().deterministic.rl_on_policy_target is not None or _is_musa:
             self._forward_method = self.forward_native
             self._apply_rotary_emb_wrapped = torch.compile(
                 dynamic=True,
@@ -153,7 +153,7 @@ class RotaryEmbedding(MultiPlatformOp):
         # create the cache on GPU for faster initialization. This may cause
         # a slight numerical difference between the HF implementation and ours.
         init_device = (
-            "cpu" if get_server_args().rl_on_policy_target is not None else None
+            "cpu" if get_exec().deterministic.rl_on_policy_target is not None else None
         )
         inv_freq = 1.0 / (
             base
@@ -164,7 +164,7 @@ class RotaryEmbedding(MultiPlatformOp):
                 / self.rotary_dim
             )
         )
-        if get_server_args().rl_on_policy_target is not None:
+        if get_exec().deterministic.rl_on_policy_target is not None:
             inv_freq = inv_freq.cuda()
         return inv_freq
 

python/sglang/srt/layers/rotary_embedding/mrope.py

@@ -18,7 +18,7 @@ from sglang.srt.layers.rotary_embedding.yarn import (
     yarn_get_mscale_simple,
     yarn_linear_ramp_mask,
 )
-from sglang.srt.runtime_context import get_server_args
+from sglang.srt.runtime_context import get_exec, get_server_args
 from sglang.srt.utils import (
     cpu_has_amx_support,
     is_cuda,
@@ -132,7 +132,7 @@ class MRotaryEmbedding(RotaryEmbedding):
             self.register_buffer("axis_map", axis_map, persistent=False)
         else:
             self.axis_map = None
-        if get_server_args().rl_on_policy_target is not None:
+        if get_exec().deterministic.rl_on_policy_target is not None:
             self._forward_method = self.forward_native
 
     def get_cos_sin_with_position(self, positions):

python/sglang/srt/layers/sampler.py

@@ -15,7 +15,7 @@ from sglang.srt.layers.logits_processor import LogitsProcessorOutput
 from sglang.srt.layers.logprob_processor import (
     OutputLogprobProcessor,
 )
-from sglang.srt.runtime_context import get_parallel, get_server_args
+from sglang.srt.runtime_context import get_exec, get_parallel, get_server_args
 from sglang.srt.sampling.sampling_batch_info import SamplingBatchInfo
 from sglang.srt.sampling.sampling_params import TOP_K_ALL
 from sglang.srt.utils.async_probe import sanitize_nan_logits
@@ -74,12 +74,14 @@ class Sampler(nn.Module):
         if is_dp_attention_enabled():
             self.tp_sync_group = get_parallel().attn_tp_group.device_group
 
-        self.rl_on_policy_target = get_server_args().rl_on_policy_target
+        self.rl_on_policy_target = get_exec().deterministic.rl_on_policy_target
         # In RL on-policy mode, deterministic inference is automatically enabled.
-        self.enable_deterministic = get_server_args().enable_deterministic_inference
+        self.enable_deterministic = (
+            get_exec().deterministic.enable_deterministic_inference
+        )
         # In RL on-policy mode, we use log_softmax to compute logprobs to match the trainer.
         self.use_log_softmax_logprob = self.rl_on_policy_target is not None
-        self.use_ascend_backend = get_server_args().sampling_backend == "ascend"
+        self.use_ascend_backend = get_exec().kernel.sampling_backend == "ascend"
 
         self.output_logprob_processor = OutputLogprobProcessor()
 
@@ -260,7 +262,7 @@ class Sampler(nn.Module):
                 positions=positions,
             )
         else:
-            backend = get_server_args().sampling_backend
+            backend = get_exec().kernel.sampling_backend
             if backend == "flashinfer":
                 assert (
                     sampling_info.sampling_seed is None
@@ -540,7 +542,7 @@ def create_sampler(backend: Optional[str] = None) -> "Sampler":
     """Create a sampler honoring custom backend registrations."""
 
     server_args = get_server_args()
-    backend = backend or (server_args.sampling_backend if server_args else None)
+    backend = backend or (get_exec().kernel.sampling_backend if server_args else None)
 
     if backend in _CUSTOM_SAMPLER_FACTORIES:
         sampler = _CUSTOM_SAMPLER_FACTORIES[backend]()

python/sglang/srt/managers/data_parallel_controller.py

@@ -48,7 +48,7 @@ from sglang.srt.managers.scheduler import run_scheduler_process
 from sglang.srt.observability.cpu_monitor import start_cpu_monitor_thread
 from sglang.srt.observability.req_time_stats import DPControllerReqTimeStats
 from sglang.srt.observability.trace import process_tracing_init, trace_set_thread_info
-from sglang.srt.runtime_context import publish
+from sglang.srt.runtime_context import get_exec, publish
 from sglang.srt.server_args import (
     DP_ATTENTION_HANDSHAKE_PORT_DELTA,
     PortArgs,
@@ -232,7 +232,7 @@ class DataParallelController:
                 sock_send(worker, obj)
 
     def update_active_ranks(self, ranks: ActiveRanksOutput):
-        if self.server_args.elastic_ep_backend is not None:
+        if get_exec().moe.elastic_ep_backend is not None:
             if len(ranks.status) != self.max_dp_size:
                 logger.warning(
                     "[Elastic EP][DPC] active rank status len=%d != max_dp_size=%d; "
@@ -485,7 +485,7 @@ class DataParallelController:
             logger.debug("Worker port broadcast completed")
             return worker_ports
         finally:
-            if self.server_args.elastic_ep_backend is None:
+            if get_exec().moe.elastic_ep_backend is None:
                 rep_socket.close()
             else:
                 threading.Thread(

python/sglang/srt/managers/mm_utils.py

@@ -33,7 +33,12 @@ from sglang.srt.managers.schedule_batch import (
 from sglang.srt.mem_cache.multimodal_cache import EmbeddingResult, MultiModalStaticCache
 from sglang.srt.model_executor.forward_batch_info import ForwardBatch
 from sglang.srt.multimodal.evs import EVSEmbeddingResult
-from sglang.srt.runtime_context import get_parallel, get_server_args
+from sglang.srt.runtime_context import (
+    get_disagg,
+    get_parallel,
+    get_schedule,
+    get_server_args,
+)
 from sglang.srt.utils import flatten_nested_list, is_hip, is_npu, print_warning_once
 from sglang.srt.utils.stale_shm_cleanup import make_shm_name
 from sglang.utils import logger
@@ -931,7 +936,7 @@ def _adjust_embedding_length(
             f"tokens from multimodal embeddings."
         )
         if num_mm_tokens_in_input_ids < num_mm_tokens_in_embedding:
-            chunked_prefill_size = get_server_args().chunked_prefill_size
+            chunked_prefill_size = get_schedule().chunked_prefill_size
             if chunked_prefill_size != -1:
                 logger.warning(
                     "You may want to avoid this issue by raising `chunked_prefill_size`, or disabling chunked prefill"
@@ -1295,7 +1300,7 @@ def general_mm_embed_routine(
             # encoder/ViT execution and multimodal feature placement, while
             # the language model range below excludes both.
             with torch.profiler.record_function("sglang.vlm.mm_embedding"):
-                if server_args and server_args.enable_adaptive_dispatch_to_encoder:
+                if server_args and get_disagg().enable_adaptive_dispatch_to_encoder:
                     # Split by precomputed vs non-precomputed so get_embedding_and_mask only sees uniform batches
                     input_embeds, other_info = _embed_mm_inputs_with_split(
                         mm_inputs_list=mm_inputs_list,
@@ -1340,7 +1345,7 @@ def general_mm_embed_routine(
                             feature = getattr(mm_item, "feature", None)
                             if isinstance(feature, torch.Tensor) and feature.is_cuda:
                                 mm_item.feature = feature.to("cpu", non_blocking=True)
-                            if get_server_args().language_only:
+                            if get_disagg().language_only:
                                 precomputed_embeddings = getattr(
                                     mm_item, "precomputed_embeddings", None
                                 )

python/sglang/srt/managers/schedule_batch.py

@@ -2,6 +2,7 @@ from __future__ import annotations
 
 from sglang.srt.dllm.config import DllmConfig
 from sglang.srt.model_executor.forward_batch_info import ForwardBatch
+from sglang.srt.runtime_context import get_exec, get_schedule, get_serving, get_spec
 from sglang.srt.utils.common import (
     Range,
     ceil_align,
@@ -1097,7 +1098,7 @@ class Req(ReqDllmMixin):
         """Check if this request is prefill-only (no token generation needed)."""
         # NOTE: when spec is enabled, prefill_only optimizations are disabled
 
-        spec_alg = get_server_args().speculative_algorithm
+        spec_alg = get_spec().speculative_algorithm
         return self.sampling_params.max_new_tokens == 0 and spec_alg is None
 
     @property
@@ -1118,7 +1119,7 @@ class Req(ReqDllmMixin):
     def effective_kv_committed_len(self) -> int:
         # Report only the prompt prefix so thinking + answer fall into the
         # overallocated range and are reclaimed by release_kv_cache. #22373.
-        if get_server_args().strip_thinking_cache and self.reasoning_tokens > 0:
+        if get_serving().strip_thinking_cache and self.reasoning_tokens > 0:
             return min(self.kv_committed_len, len(self.origin_input_ids))
         return self.kv_committed_len
 
@@ -2922,7 +2923,7 @@ class ScheduleBatch(ScheduleBatchDisaggregationDecodeMixin):
             )
 
         if server_args.enable_mamba_extra_buffer():
-            mamba_track_interval = server_args.mamba_track_interval
+            mamba_track_interval = get_exec().mamba.mamba_track_interval
 
             if len(self.reqs) == 0:
                 self.mamba_track_indices = torch.empty(
@@ -3168,8 +3169,8 @@ class ScheduleBatch(ScheduleBatchDisaggregationDecodeMixin):
                             continue
                         else:
                             pre_len = (
-                                pre_len - server_args.chunked_prefill_size
+                                pre_len - get_schedule().chunked_prefill_size
-                                if server_args.chunked_prefill_size > 0
+                                if get_schedule().chunked_prefill_size > 0
                                 else pre_len
                             )
                             self._evict_swa(req, pre_len)

python/sglang/srt/managers/schedule_policy.py

@@ -5,6 +5,7 @@ from array import array
 
 from sglang.srt.environ import envs
 from sglang.srt.managers.prefill_delayer import PrefillDelayerSinglePassExecutor
+from sglang.srt.runtime_context import get_disagg
 from sglang.srt.utils import get_bool_env_var
 
 _ROUTING_KEY_POLICY_DEBUG_LOG = get_bool_env_var("SGLANG_ROUTING_KEY_POLICY_DEBUG_LOG")
@@ -56,7 +57,6 @@ from sglang.srt.mem_cache.multi_ended_allocator import (
     UnifiedMambaTokenToKVPoolAllocator,
 )
 from sglang.srt.mem_cache.radix_cache import RadixCache, RadixKey, TreeNode
-from sglang.srt.runtime_context import get_server_args
 from sglang.srt.server_args import ServerArgs
 
 if TYPE_CHECKING:
@@ -195,7 +195,7 @@ class SchedulePolicy:
         if (
             not isinstance(policy, CacheAwarePolicy)
             and self.tree_cache.supports_fast_match_prefix()
-            and get_server_args().disaggregation_mode != "decode"
+            and get_disagg().disaggregation_mode != "decode"
         ):
             for r in waiting_queue:
                 match_prefix_for_req(self.tree_cache, r, include_req=True)

python/sglang/srt/managers/scheduler.py

@@ -27,6 +27,20 @@ from functools import partial
 from http import HTTPStatus
 from typing import Any, Deque, Dict, List, Optional, Tuple, Union
 
+from sglang.srt.runtime_context import (
+    get_device,
+    get_disagg,
+    get_exec,
+    get_lora,
+    get_memory,
+    get_mm,
+    get_model,
+    get_observability,
+    get_schedule,
+    get_serving,
+    get_spec,
+)
+
 from sglang.srt.utils.common import suppress_noisy_warnings  # isort: skip
 
 suppress_noisy_warnings()
@@ -482,9 +496,9 @@ class Scheduler(
             attn_tp_cpu_group=self.attn_tp_cpu_group,
             tp_cpu_group=self.tp_cpu_group,
             attn_cp_cpu_group=self.attn_cp_cpu_group,
-            enable_metrics=self.server_args.enable_metrics,
+            enable_metrics=get_observability().enable_metrics,
             enable_kv_cache_events=bool(
-                self.server_args.kv_events_config
+                get_observability().kv_events_config
                 and self.ps.pp_rank == 0
                 and self.ps.attn_tp_rank == 0
                 and self.ps.attn_cp_rank == 0
@@ -526,8 +540,8 @@ class Scheduler(
         self.init_hisparse_coordinator()
 
         if (
-            self.server_args.disaggregation_mode == "decode"
+            get_disagg().disaggregation_mode == "decode"
-            and self.server_args.disaggregation_decode_enable_offload_kvcache
+            and get_disagg().disaggregation_decode_enable_offload_kvcache
         ):
             self.decode_offload_manager = DecodeKVCacheOffloadManager(
                 req_to_token_pool=self.req_to_token_pool,
@@ -642,7 +656,7 @@ class Scheduler(
 
             self.dllm_config = (  # For diffusion LLM
                 DllmConfig.from_server_args(self.server_args)
-                if self.server_args.dllm_algorithm is not None
+                if get_exec().dllm.dllm_algorithm is not None
                 else None
             )
 
@@ -671,10 +685,10 @@ class Scheduler(
             port_args=port_args,
             is_rank_zero=is_rank_zero,
             skip_tokenizer_init=self.server_args.skip_tokenizer_init,
-            metrics_enabled=self.server_args.enable_metrics
+            metrics_enabled=get_observability().enable_metrics
             and (
                 self.ps.attn_tp_rank == 0
-                or self.server_args.enable_metrics_for_all_schedulers
+                or get_observability().enable_metrics_for_all_schedulers
             ),
             enable_scripted_runtime=envs.SGLANG_TEST_SCRIPTED_RUNTIME.get(),
         )
@@ -693,7 +707,7 @@ class Scheduler(
                 port_args,
                 self.ps.dp_size,
                 dp_rank,
-                publish_interval=self.server_args.load_snapshot_publish_interval,
+                publish_interval=get_observability().load_snapshot_publish_interval,
             )
         except Exception as e:
             logger.warning("load snapshot writer init failed: %s", e)
@@ -703,7 +717,7 @@ class Scheduler(
             self.ps.pp_rank == 0
             and self.ps.attn_tp_rank == 0
             and self.ps.attn_cp_rank == 0
-            and self.server_args.sleep_on_idle
+            and get_device().sleep_on_idle
         ):
             self.idle_sleeper = IdleSleeper(
                 sockets=[
@@ -737,22 +751,22 @@ class Scheduler(
         else:
             if self.model_config.is_multimodal:
                 self.processor = get_processor(
-                    server_args.tokenizer_path,
+                    get_serving().tokenizer_path,
-                    tokenizer_mode=server_args.tokenizer_mode,
+                    tokenizer_mode=get_serving().tokenizer_mode,
-                    trust_remote_code=server_args.trust_remote_code,
+                    trust_remote_code=get_model().trust_remote_code,
-                    revision=server_args.revision,
+                    revision=get_model().revision,
-                    use_fast=not server_args.disable_fast_image_processor,
+                    use_fast=not get_mm().disable_fast_image_processor,
-                    tokenizer_backend=server_args.tokenizer_backend,
+                    tokenizer_backend=get_serving().tokenizer_backend,
-                    model_name=server_args.model_path,
+                    model_name=get_model().model_path,
                 )
                 self.tokenizer = get_tokenizer_from_processor(self.processor)
             else:
                 self.tokenizer = get_tokenizer(
-                    server_args.tokenizer_path,
+                    get_serving().tokenizer_path,
-                    tokenizer_mode=server_args.tokenizer_mode,
+                    tokenizer_mode=get_serving().tokenizer_mode,
-                    trust_remote_code=server_args.trust_remote_code,
+                    trust_remote_code=get_model().trust_remote_code,
-                    revision=server_args.revision,
+                    revision=get_model().revision,
-                    tokenizer_backend=server_args.tokenizer_backend,
+                    tokenizer_backend=get_serving().tokenizer_backend,
                 )
 
         # Load multimodal processor for M-RoPE fallback computation.
@@ -774,9 +788,9 @@ class Scheduler(
                 )
 
         # Set reasoning_parser and think_end_id if --reasoning_parser is enabled
-        if self.server_args.reasoning_parser and self.tokenizer:
+        if get_serving().reasoning_parser and self.tokenizer:
             reasoning_parser = ReasoningParser(
-                model_type=self.server_args.reasoning_parser,
+                model_type=get_serving().reasoning_parser,
                 stream_reasoning=False,
                 tokenizer=self.tokenizer,
             )
@@ -847,7 +861,7 @@ class Scheduler(
             target_worker=self.tp_worker,
         )
 
-        if self.server_args.speculative_draft_load_format is not None:
+        if get_spec().speculative_draft_load_format is not None:
             # Write the draft load_format onto server_args (not just the bag):
             # the draft worker is built from a copy of self.server_args and
             # build_load_config reads server_args.load_format, so a bag-only
@@ -855,10 +869,10 @@ class Scheduler(
             # format.
             self.server_args.override(
                 "scheduler.draft_load_format",
-                load_format=self.server_args.speculative_draft_load_format,
+                load_format=get_spec().speculative_draft_load_format,
             )
             logger.info(
-                f"Using draft model load_format: '{self.server_args.speculative_draft_load_format}'"
+                f"Using draft model load_format: '{get_spec().speculative_draft_load_format}'"
             )
 
         DraftWorkerClass = self.spec_algorithm.create_worker(self.server_args)
@@ -925,8 +939,8 @@ class Scheduler(
             model_runner.post_capture_resize_kv_pool()
 
         if (
-            self.server_args.elastic_ep_backend is not None
+            get_exec().moe.elastic_ep_backend is not None
-            and self.server_args.ep_join_mode == "recover"
+            and get_exec().moe.ep_join_mode == "recover"
         ):
             model_runner.post_capture_elastic_ep_recover()
 
@@ -955,7 +969,7 @@ class Scheduler(
         # --min-free-slots-delay. Built independently of the prefill delayer.
         self.min_free_slots_delayer: Optional[MinFreeSlotsDelayer] = None
         min_free_slots = resolve_min_free_slots(
-            self.server_args.min_free_slots_delay,
+            get_schedule().min_free_slots_delay,
             self.max_running_requests,
             is_dflash_family=self.spec_algorithm.is_dflash_family(),
         )
@@ -1001,14 +1015,14 @@ class Scheduler(
         if self.ps.tp_rank == 0:
             logger.info(
                 f"max_total_num_tokens={self.max_total_num_tokens}, "
-                f"chunked_prefill_size={self.server_args.chunked_prefill_size}, "
+                f"chunked_prefill_size={get_schedule().chunked_prefill_size}, "
                 f"max_prefill_tokens={self.max_prefill_tokens}, "
                 f"max_running_requests={self.max_running_requests}, "
                 f"context_len={self.model_config.context_len}, "
                 f"{'available_cpu_mem' if self.device == 'cpu' else 'available_gpu_mem'}={avail_mem:.2f} GB"
             )
 
-        if self.server_args.enable_metrics:
+        if get_observability().enable_metrics:
             self.metrics_collector.emit_constants(
                 max_total_num_tokens=self.max_total_num_tokens,
                 # TODO: max_running_requests_under_SLO has no setter — dead chain.
@@ -1055,7 +1069,7 @@ class Scheduler(
         self._engine_paused = False
 
     def init_chunked_prefill(self):
-        self.chunked_prefill_size = self.server_args.chunked_prefill_size
+        self.chunked_prefill_size = get_schedule().chunked_prefill_size
         uses_transformers_backend = (
             get_resolved_model_impl(self.model_config) == ModelImpl.TRANSFORMERS
         )
@@ -1075,13 +1089,12 @@ class Scheduler(
         self.chunked_req = None
         self._pending_chunked_abort_req = None
         self.is_mixed_chunk = (
-            self.chunked_prefill_size is not None
+            self.chunked_prefill_size is not None and get_schedule().enable_mixed_chunk
-            and self.server_args.enable_mixed_chunk
         )
 
         # Init the dynamic chunking predictor for PP
         self.enable_dynamic_chunking = (
-            self.server_args.enable_dynamic_chunking and self.ps.pp_size > 1
+            get_schedule().enable_dynamic_chunking and self.ps.pp_size > 1
         )
         if self.enable_dynamic_chunking:
             try:
@@ -1117,8 +1130,8 @@ class Scheduler(
         )
         self.prefill_delayer: Optional[PrefillDelayer] = None
         self.max_prefill_bs: int = 0
-        if self.server_args.enable_prefill_delayer:
+        if get_schedule().enable_prefill_delayer:
-            if self.server_args.disaggregation_mode == "decode":
+            if get_disagg().disaggregation_mode == "decode":
                 logger.info(
                     "Ignoring --enable-prefill-delayer on decode engine "
                     "(no prefill scheduling path; delayer would be a no-op)."
@@ -1135,15 +1148,15 @@ class Scheduler(
                         if self.metrics_reporter.enable_metrics
                         else None
                     ),
-                    max_delay_passes=self.server_args.prefill_delayer_max_delay_passes,
+                    max_delay_passes=get_schedule().prefill_delayer_max_delay_passes,
-                    token_usage_low_watermark=self.server_args.prefill_delayer_token_usage_low_watermark,
+                    token_usage_low_watermark=get_schedule().prefill_delayer_token_usage_low_watermark,
                     device=self.tp_group.device,
                 )
 
         # NOTE: preemption is enabled by default for priority scheduling.
         self.enable_priority_preemption = (
             self.enable_priority_scheduling
-            and not self.server_args.disable_priority_preemption
+            and not get_schedule().disable_priority_preemption
         )
 
         self.new_token_ratio_tracker = NewTokenRatioTracker.from_server_args(
@@ -1159,12 +1172,12 @@ class Scheduler(
     def init_watch_dog_memory_saver_input_blocker(self):
         # Start watchdog thread
         self.watchdog = create_scheduler_watchdog(
-            self, watchdog_timeout=self.server_args.watchdog_timeout
+            self, watchdog_timeout=get_device().watchdog_timeout
         )
 
         # Init memory saver, profiler and metric stats
         self.memory_saver_adapter = TorchMemorySaverAdapter.create(
-            enable=self.server_args.enable_memory_saver
+            enable=get_exec().features.enable_memory_saver
         )
 
         # Init recv skipper and input blocker
@@ -1186,11 +1199,9 @@ class Scheduler(
         self.disagg_decode_prealloc_queue = None
         self.disagg_decode_transfer_queue = None
 
-        self.disaggregation_mode = DisaggregationMode(
+        self.disaggregation_mode = DisaggregationMode(get_disagg().disaggregation_mode)
-            self.server_args.disaggregation_mode
-        )
         self.transfer_backend = TransferBackend(
-            self.server_args.disaggregation_transfer_backend
+            get_disagg().disaggregation_transfer_backend
         )
 
         # todo: should we fix this when enabling mtp or it doesn't matter since we only enable mtp in decode node thus we don't transfer draft kvs between P and D?
@@ -1260,10 +1271,10 @@ class Scheduler(
                 tp_size=self.ps.tp_size,
                 dp_size=self.server_args.dp_size,
                 gpu_id=self.ps.gpu_id,
-                bootstrap_port=self.server_args.disaggregation_bootstrap_port,
+                bootstrap_port=get_disagg().disaggregation_bootstrap_port,
                 max_total_num_tokens=self.max_total_num_tokens,
                 pp_rank=self.ps.pp_rank,
-                num_reserved_decode_tokens=self.server_args.num_reserved_decode_tokens,
+                num_reserved_decode_tokens=get_disagg().num_reserved_decode_tokens,
                 transfer_backend=self.transfer_backend,
             )
 
@@ -1289,7 +1300,7 @@ class Scheduler(
                 tp_rank=self.ps.tp_rank,
                 tp_size=self.ps.tp_size,
                 gpu_id=self.ps.gpu_id,
-                bootstrap_port=self.server_args.disaggregation_bootstrap_port,
+                bootstrap_port=get_disagg().disaggregation_bootstrap_port,
                 gloo_group=self.attn_tp_cpu_group,
                 max_total_num_tokens=self.max_total_num_tokens,
                 scheduler=self,
@@ -1303,11 +1314,10 @@ class Scheduler(
             self.enable_staging = envs.SGLANG_DISAGG_STAGING_BUFFER.get()
 
         # Init mm receiver for EPD disaggregation mode
-        if (
+        if get_disagg().language_only and get_disagg().encoder_transfer_backend in [
-            self.server_args.language_only
+            "zmq_to_scheduler",
-            and self.server_args.encoder_transfer_backend
+            "mooncake",
-            in ["zmq_to_scheduler", "mooncake"]
+        ]:
-        ):
             self.mm_receiver = create_mm_receiver(
                 self.server_args,
                 dtype=self.model_config.dtype,
@@ -1388,7 +1398,7 @@ class Scheduler(
 
     def init_deterministic_inference_config(self):
         """Initialize deterministic inference configuration for different attention backends."""
-        if not self.server_args.enable_deterministic_inference:
+        if not get_exec().deterministic.enable_deterministic_inference:
             self.truncation_align_size = None
             return
 
@@ -1794,10 +1804,10 @@ class Scheduler(
         )
 
     def init_lora_drainer(self) -> None:
-        if self.server_args.lora_drain_wait_threshold > 0.0:
+        if get_lora().lora_drain_wait_threshold > 0.0:
             self.lora_drainer = LoRADrainer(
-                self.server_args.max_loras_per_batch,
+                get_lora().max_loras_per_batch,
-                self.server_args.lora_drain_wait_threshold,
+                get_lora().lora_drain_wait_threshold,
             )
         else:
             self.lora_drainer = None
@@ -1923,7 +1933,7 @@ class Scheduler(
 
     def init_kv_events_publisher(self) -> None:
         self.kv_events_publisher = SchedulerKvEventsPublisher(
-            kv_events_config=self.server_args.kv_events_config,
+            kv_events_config=get_observability().kv_events_config,
             ps=self.ps,
             attn_tp_rank=self.ps.attn_tp_rank,
             attn_cp_rank=self.ps.attn_cp_rank,
@@ -2107,7 +2117,7 @@ class Scheduler(
         return image_inputs
 
     def _get_multimodal_inputs(self, mm_inputs_dict):
-        if self.server_args.enable_broadcast_mm_inputs_process:
+        if get_mm().enable_broadcast_mm_inputs_process:
             return self._process_and_broadcast_mm_inputs(mm_inputs_dict)
         else:
             return MultimodalInputs.from_processor_output(mm_inputs_dict)
@@ -2154,7 +2164,7 @@ class Scheduler(
 
     def _maybe_namespace_elastic_radix_cache(self, req: Req) -> None:
         if (
-            self.server_args.elastic_ep_backend is None
+            get_exec().moe.elastic_ep_backend is None
             or self.disable_radix_cache
             or not self.tree_cache.is_tree_cache()
         ):
@@ -2200,8 +2210,7 @@ class Scheduler(
         )
         # Radix-native sessions use only the top-level session_id.
         radix_native_session = (
-            recv_req.session_id is not None
+            recv_req.session_id is not None and get_memory().enable_session_radix_cache
-            and self.server_args.enable_session_radix_cache
         )
 
         if session_id is None or radix_native_session:
@@ -2213,7 +2222,7 @@ class Scheduler(
 
             if recv_req.bootstrap_port is None:
                 # Use default bootstrap port
-                recv_req.bootstrap_port = self.server_args.disaggregation_bootstrap_port
+                recv_req.bootstrap_port = get_disagg().disaggregation_bootstrap_port
 
             req = Req(
                 recv_req.rid,
@@ -2366,7 +2375,7 @@ class Scheduler(
             self._add_request_to_queue(req)
             return
 
-        if req.return_sampling_mask and self.server_args.sampling_backend == "ascend":
+        if req.return_sampling_mask and get_exec().kernel.sampling_backend == "ascend":
             # The ascend backend samples from logits directly and never builds the
             # top-k/top-p support, so it cannot produce a sampling mask.
             error_msg = (
@@ -2415,7 +2424,7 @@ class Scheduler(
         error_msg = validate_input_length(
             req,
             self.max_req_input_len,
-            self.server_args.allow_auto_truncate,
+            get_serving().allow_auto_truncate,
         )
         if error_msg:
             req.set_finish_with_abort(error_msg)
@@ -2693,7 +2702,7 @@ class Scheduler(
         error_msg = validate_input_length(
             req,
             self.max_req_input_len,
-            self.server_args.allow_auto_truncate,
+            get_serving().allow_auto_truncate,
         )
         if error_msg:
             self._add_request_to_queue(req)
@@ -2905,7 +2914,7 @@ class Scheduler(
         if (
             need_mlp_sync
             and not self.spec_algorithm.is_none()
-            and not self.server_args.speculative_skip_dp_mlp_sync
+            and not get_spec().speculative_skip_dp_mlp_sync
         ):
             # NOTE: This branch makes sure prefill and decode batches will not be mixed when spec and dp-attn is enabled.
             # Before merging the new batch into running batch:
@@ -2979,7 +2988,7 @@ class Scheduler(
             for req in ready_grammar_requests:
                 self._add_request_to_queue(req)
 
-        if self.enable_hierarchical_cache or self.server_args.enable_flexkv:
+        if self.enable_hierarchical_cache or get_memory().enable_flexkv:
             self.tree_cache.check_hicache_events()
 
         if self.enable_priority_preemption or self.is_hybrid_swa:
@@ -3046,7 +3055,7 @@ class Scheduler(
             self.priority_scheduling_preemption_threshold,
             max_prefill_bs=self.max_prefill_bs,
             max_running_requests=self.max_running_requests,
-            prefill_max_requests=self.server_args.prefill_max_requests,
+            prefill_max_requests=get_schedule().prefill_max_requests,
             prefill_delayer_single_pass=prefill_delayer_single_pass,
             dllm_config=self.dllm_config,
             waiting_queue_len=len(self.waiting_queue),
@@ -3619,7 +3628,7 @@ class Scheduler(
 
     def _maybe_report_active_ranks(self) -> None:
         if not (
-            self.enable_dp_attention and self.server_args.elastic_ep_backend is not None
+            self.enable_dp_attention and get_exec().moe.elastic_ep_backend is not None
         ):
             return
         from sglang.srt.elastic_ep.elastic_ep import ElasticEPStateManager
@@ -3924,7 +3933,7 @@ class Scheduler(
             ok, msg = self.tree_cache.attach_storage_backend(
                 storage_backend=recv_req.hicache_storage_backend,
                 storage_backend_extra_config_json=recv_req.hicache_storage_backend_extra_config_json,
-                served_model_name=self.server_args.served_model_name,
+                served_model_name=get_serving().served_model_name,
                 hicache_storage_prefetch_policy=recv_req.hicache_storage_prefetch_policy,
                 hicache_write_policy=recv_req.hicache_write_policy,
             )
@@ -4044,7 +4053,7 @@ class Scheduler(
         }
         ret["effective_max_running_requests_per_dp"] = self.max_running_requests
 
-        if self.server_args.elastic_ep_backend is not None:
+        if get_exec().moe.elastic_ep_backend is not None:
             from sglang.srt.elastic_ep.elastic_ep import ElasticEPStateManager
 
             ret["is_scaling_elastic_ep"] = ElasticEPStateManager.is_scaling()
@@ -4583,10 +4592,10 @@ class Scheduler(
         return None
 
     def close_session(self, recv_req: CloseSessionReqInput):
-        if self.server_args.enable_session_radix_cache:
+        if get_memory().enable_session_radix_cache:
             self.tree_cache.release_radix_session(recv_req.session_id)
         if recv_req.session_id in self.session_controller or not (
-            self.server_args.enable_session_radix_cache
+            get_memory().enable_session_radix_cache
         ):
             self.session_controller.close(recv_req)
 

python/sglang/srt/managers/scheduler_components/batch_result_processor.py

@@ -27,7 +27,13 @@ from sglang.srt.mem_cache.common import (
     maybe_cache_unfinished_req,
     release_kv_cache,
 )
-from sglang.srt.runtime_context import get_server_args
+from sglang.srt.runtime_context import (
+    get_disagg,
+    get_exec,
+    get_memory,
+    get_observability,
+    get_server_args,
+)
 from sglang.srt.speculative.base_spec_worker import BaseSpecWorker
 from sglang.srt.state_capturer.indexer_topk import get_global_indexer_capturer
 from sglang.srt.state_capturer.routed_experts import get_global_experts_capturer
@@ -84,7 +90,7 @@ class SchedulerBatchResultProcessor:
 
     def process_batch_result_prebuilt(self, batch: ScheduleBatch):
         assert self.disaggregation_mode == DisaggregationMode.DECODE
-        use_free_group = self.server_args.disaggregation_decode_enable_radix_cache
+        use_free_group = get_disagg().disaggregation_decode_enable_radix_cache
         if use_free_group:
             self.token_to_kv_pool_allocator.free_group_begin()
         for req in batch.reqs:
@@ -92,7 +98,7 @@ class SchedulerBatchResultProcessor:
             req.update_finish_state()
             if req.finished():
                 req.time_stats.set_quick_finish_time()
-                if self.server_args.enable_hisparse:
+                if get_memory().enable_hisparse:
                     self.hisparse_coordinator.request_finished(req)
                 release_kv_cache(req, self.tree_cache)
 
@@ -243,7 +249,7 @@ class SchedulerBatchResultProcessor:
                         req.time_stats.set_completion_time()
                     elif not batch.decoding_reqs or req not in batch.decoding_reqs:
                         maybe_cache_unfinished_req(req, self.tree_cache)
-                        if self.server_args.enable_hisparse:
+                        if get_memory().enable_hisparse:
                             self.hisparse_coordinator.admit_request_into_staging(req)
 
                     self._maybe_collect_customized_info(i, req, logits_output)
@@ -756,7 +762,7 @@ class SchedulerBatchResultProcessor:
                 num_block_accept_tokens=result.num_block_accept_tokens,
                 num_cap_tokens=result.num_cap_tokens,
             )
-        if self.server_args.enable_metrics:
+        if get_observability().enable_metrics:
             self.metrics_collector.increment_decode_cuda_graph_pass(
                 value=can_run_cuda_graph
             )
@@ -939,7 +945,7 @@ class SchedulerBatchResultProcessor:
         self._mamba_prefix_cache_update(req, batch, result, i)
 
         if (
-            self.server_args.disaggregation_decode_enable_offload_kvcache
+            get_disagg().disaggregation_decode_enable_offload_kvcache
             and not req.finished()
         ):
             self.decode_offload_manager.offload_kv_cache(req)
@@ -959,12 +965,12 @@ class SchedulerBatchResultProcessor:
             self._maybe_collect_routed_experts(req)
             self._maybe_collect_indexer_topk(req)
 
-            if self.server_args.disaggregation_decode_enable_offload_kvcache:
+            if get_disagg().disaggregation_decode_enable_offload_kvcache:
                 # Asynchronously offload KV cache; release_kv_cache will be called after Device->Host transfer completes
                 if not self.decode_offload_manager.offload_kv_cache(req):
                     self.decode_offload_manager.finalize_release_on_finish(req)
             else:
-                if self.server_args.enable_hisparse:
+                if get_memory().enable_hisparse:
                     self.hisparse_coordinator.request_finished(req)
                 prepare_release = getattr(
                     self.model_worker, "prepare_for_kv_cache_release", None
@@ -1063,7 +1069,7 @@ class SchedulerBatchResultProcessor:
                 other_idx
             ].item() == -1 and mamba_lazy_spec_in_window(
                 req,
-                server_args.mamba_track_interval,
+                get_exec().mamba.mamba_track_interval,
                 server_args.max_speculative_num_draft_tokens,
             )
             if (
@@ -1102,7 +1108,7 @@ class SchedulerBatchResultProcessor:
         For spec decode, the boundary is detected by comparing the
         accepted seq_len range against interval boundaries.
         """
-        interval = get_server_args().mamba_track_interval
+        interval = get_exec().mamba.mamba_track_interval
 
         if batch.spec_algorithm.is_none():
             if req.kv_committed_len % interval == 0:

python/sglang/srt/managers/scheduler_components/dp_attn.py

@@ -26,6 +26,7 @@ from sglang.srt.model_executor.cuda_graph_config import (
 )
 from sglang.srt.model_executor.forward_batch_info import ForwardMode
 from sglang.srt.observability.metrics_collector import DPCooperationInfo
+from sglang.srt.runtime_context import get_schedule
 from sglang.srt.server_args import ServerArgs
 from sglang.srt.speculative.spec_info import SpeculativeAlgorithm
 from sglang.srt.utils.common import require_mlp_tp_gather
@@ -385,7 +386,7 @@ class SchedulerDPAttnAdapter:
             get_idle_batch=self.get_idle_batch,
             disable_cuda_graph=cuda_graph_fully_disabled(),
             require_mlp_tp_gather=require_mlp_tp_gather(self.server_args),
-            disable_overlap_schedule=self.server_args.disable_overlap_schedule,
+            disable_overlap_schedule=get_schedule().disable_overlap_schedule,
             offload_tags=self.offload_tags,
             dwdp=self.server_args.dwdp_size > 1,
         )

python/sglang/srt/managers/scheduler_components/load_inquirer.py

@@ -14,6 +14,7 @@ from sglang.srt.managers.load_snapshot import (
     QueueMetrics,
     SpeculativeMetrics,
 )
+from sglang.srt.runtime_context import get_lora
 
 if TYPE_CHECKING:
     from sglang.srt.distributed.parallel_state_wrapper import ParallelState
@@ -155,7 +156,7 @@ class SchedulerLoadInquirer:
             )
 
         lora = None
-        if self.server_args.enable_lora:
+        if get_lora().enable_lora:
             lora = LoRAMetrics(
                 slots_used=stats.lora_pool_slots_used,
                 slots_total=stats.lora_pool_slots_total,

python/sglang/srt/managers/scheduler_components/logprob_result_processor.py

@@ -11,6 +11,7 @@ import torch
 from sglang.srt.configs.model_config import ModelConfig
 from sglang.srt.layers.logits_processor import LogitsProcessorOutput
 from sglang.srt.managers.schedule_batch import Req
+from sglang.srt.runtime_context import get_exec
 from sglang.srt.server_args import (
     MIS_DELIMITER_TOKEN_ID,
     ServerArgs,
@@ -164,7 +165,7 @@ class SchedulerLogprobResultProcessor:
         delimiter token receive logprobs.
         """
         return (
-            self.server_args.enable_mis
+            get_exec().features.enable_mis
             and req.is_prefill_only
             and req.multi_item_delimiter_indices is not None
         )

python/sglang/srt/managers/scheduler_components/metrics_reporter.py

@@ -26,6 +26,7 @@ from sglang.srt.observability.metrics_collector import (
     SchedulerStats,
     compute_routing_key_stats,
 )
+from sglang.srt.runtime_context import get_spec
 from sglang.srt.utils.device_timer import DeviceTimer
 from sglang.srt.utils.scheduler_status_logger import SchedulerStatusLogger
 
@@ -764,12 +765,10 @@ class SchedulerMetricsReporter:
         else:
             spec_accept_length = self.spec_num_accept_tokens / self.spec_num_forward_ct
             num_correct_drafts = self.spec_num_accept_tokens - self.spec_num_forward_ct
-            if self.scheduler.server_args.speculative_num_draft_tokens:
+            if get_spec().speculative_num_draft_tokens:
-                draft_per_round = (
+                draft_per_round = get_spec().speculative_num_draft_tokens - 1
-                    self.scheduler.server_args.speculative_num_draft_tokens - 1
-                )
             else:
-                draft_per_round = self.scheduler.server_args.speculative_num_steps or 0
+                draft_per_round = get_spec().speculative_num_steps or 0
             total_draft_tokens = self.spec_num_forward_ct * draft_per_round
             spec_accept_rate = (
                 num_correct_drafts / total_draft_tokens if total_draft_tokens > 0 else 0

python/sglang/srt/managers/scheduler_components/output_streamer.py

@@ -27,6 +27,7 @@ from sglang.srt.managers.schedule_batch import (
     Req,
 )
 from sglang.srt.mem_cache.base_prefix_cache import BasePrefixCache
+from sglang.srt.runtime_context import get_observability, get_serving
 from sglang.srt.server_args import ServerArgs
 from sglang.srt.speculative.spec_info import SpeculativeAlgorithm
 
@@ -153,7 +154,7 @@ class SchedulerOutputStreamer:
             return_sampling_mask=return_sampling_mask,
             spec_algorithm=self.spec_algorithm,
             disaggregation_mode=self.disaggregation_mode,
-            default_stream_interval=self.server_args.stream_interval,
+            default_stream_interval=get_serving().stream_interval,
             default_force_stream_interval=DEFAULT_FORCE_STREAM_INTERVAL,
             get_cached_tokens_details=self.get_cached_tokens_details,
             rust_server_mode=self.rust_server is not None,
@@ -184,7 +185,7 @@ class SchedulerOutputStreamer:
         if (
             req.finished()
             and self.ps.attn_tp_rank == 0
-            and self.server_args.enable_request_time_stats_logging
+            and get_observability().enable_request_time_stats_logging
         ):
             req.log_time_stats()
 

python/sglang/srt/managers/scheduler_components/profiler_manager.py

@@ -19,7 +19,7 @@ from sglang.srt.environ import envs
 from sglang.srt.managers.io_struct import ProfileReq, ProfileReqOutput, ProfileReqType
 from sglang.srt.model_executor.forward_batch_info import ForwardMode
 from sglang.srt.platforms import current_platform
-from sglang.srt.runtime_context import get_server_args
+from sglang.srt.runtime_context import get_device
 from sglang.srt.utils import is_mps, is_npu
 from sglang.srt.utils.profile_merger import ProfileMerger
 from sglang.srt.utils.profile_utils import ProfileManager
@@ -257,7 +257,7 @@ class SchedulerProfilerManager:
             self.profile_in_progress = True
 
         if "CUDA_PROFILER" in activities:
-            if self.ps.gpu_id == get_server_args().base_gpu_id:
+            if self.ps.gpu_id == get_device().base_gpu_id:
                 torch.cuda.cudart().cudaProfilerStart()
             self.profile_in_progress = True
 
@@ -368,7 +368,7 @@ class SchedulerProfilerManager:
             torch.cuda.memory._record_memory_history(enabled=None)
 
         if "CUDA_PROFILER" in self.profiler_activities:
-            if self.ps.gpu_id == get_server_args().base_gpu_id:
+            if self.ps.gpu_id == get_device().base_gpu_id:
                 torch.cuda.cudart().cudaProfilerStop()
 
         merge_message = self._merge_profile_traces()

python/sglang/srt/managers/scheduler_components/request_receiver.py

@@ -27,6 +27,7 @@ from sglang.srt.managers.mm_utils import (
     has_shm_features,
     unwrap_shm_features,
 )
+from sglang.srt.runtime_context import get_disagg
 from sglang.srt.utils import (
     broadcast_pyobj,
     point_to_point_pyobj,
@@ -231,8 +232,8 @@ class SchedulerRequestReceiver:
         # Process MM requests under EPD-disaggregation mode
         if (
             self.ps.pp_rank == 0
-            and self.server_args.language_only
+            and get_disagg().language_only
-            and self.server_args.encoder_transfer_backend
+            and get_disagg().encoder_transfer_backend
             in ["zmq_to_scheduler", "mooncake"]
         ):
             recv_reqs, abort_reqs = self.mm_receiver.process_waiting_requests(recv_reqs)

python/sglang/srt/managers/scheduler_pp_mixin.py

@@ -36,6 +36,7 @@ from sglang.srt.model_executor.forward_batch_info import (
     PPProxyTensors,
 )
 from sglang.srt.observability.req_time_stats import set_time_batch
+from sglang.srt.runtime_context import get_disagg
 from sglang.srt.sampling.sampling_params import SamplingParams
 from sglang.srt.utils import DynamicGradMode, broadcast_pyobj, point_to_point_pyobj
 from sglang.srt.utils.common import get_device_module, is_xpu
@@ -479,7 +480,7 @@ class SchedulerPPMixin:
                     )
                 )
 
-                if self.server_args.disaggregation_decode_enable_offload_kvcache:
+                if get_disagg().disaggregation_decode_enable_offload_kvcache:
                     self.decode_offload_manager.check_offload_progress()
 
                 if rmbs[next_mb_id] is not None:
@@ -549,7 +550,7 @@ class SchedulerPPMixin:
                 + len(self.disagg_decode_transfer_queue.queue)
                 + len(self.disagg_decode_prealloc_queue.queue)
             )
-            if self.server_args.disaggregation_decode_enable_offload_kvcache:
+            if get_disagg().disaggregation_decode_enable_offload_kvcache:
                 queue_size += len(self.decode_offload_manager.ongoing_offload)
 
             if server_is_idle and queue_size == 0:

python/sglang/srt/managers/tp_worker.py

@@ -47,6 +47,7 @@ from sglang.srt.model_executor.forward_batch_info import (
     PPProxyTensors,
 )
 from sglang.srt.model_executor.pool_configurator import MemoryPoolConfig
+from sglang.srt.runtime_context import get_exec, get_model, get_schedule, get_spec
 from sglang.srt.server_args import ServerArgs
 from sglang.srt.utils import MultiprocessingSerializer, broadcast_pyobj, set_random_seed
 from sglang.srt.utils.hf_transformers_utils import (
@@ -408,14 +409,14 @@ class TpModelWorker(BaseTpWorker):
         self.model_config = ModelConfig.from_server_args(
             self.server_args,
             model_path=(
-                self.server_args.model_path
+                get_model().model_path
                 if not self.is_draft_worker
-                else self.server_args.speculative_draft_model_path
+                else get_spec().speculative_draft_model_path
             ),
             model_revision=(
-                self.server_args.revision
+                get_model().revision
                 if not self.is_draft_worker
-                else self.server_args.speculative_draft_model_revision
+                else get_spec().speculative_draft_model_revision
             ),
             is_draft_model=self.is_draft_worker,
             context_length=self.context_length,
@@ -426,7 +427,7 @@ class TpModelWorker(BaseTpWorker):
 
         self._model_runner = ModelRunner(
             model_config=self.model_config,
-            mem_fraction_static=self.server_args.mem_fraction_static,
+            mem_fraction_static=get_schedule().mem_fraction_static,
             gpu_id=self.gpu_id,
             ps=self.ps,
             nccl_port=self.nccl_port,
@@ -442,11 +443,11 @@ class TpModelWorker(BaseTpWorker):
         from sglang.srt.model_executor.model_runner import ModelRunner
 
         self.model_runner_list.append(self.model_runner)
-        for i in range(1, self.server_args.speculative_num_steps):
+        for i in range(1, get_spec().speculative_num_steps):
             self.model_runner_list.append(
                 ModelRunner(
                     model_config=self.model_config,
-                    mem_fraction_static=self.server_args.mem_fraction_static,
+                    mem_fraction_static=get_schedule().mem_fraction_static,
                     gpu_id=self.gpu_id,
                     ps=self.ps,
                     nccl_port=self.nccl_port,
@@ -462,7 +463,7 @@ class TpModelWorker(BaseTpWorker):
     def _init_dllm_algorithm(self):
         from sglang.srt.dllm.algorithm.base import DllmAlgorithm
 
-        if self.server_args.dllm_algorithm is not None:
+        if get_exec().dllm.dllm_algorithm is not None:
             self.dllm_algorithm = DllmAlgorithm.from_server_args(self.server_args)
         else:
             self.dllm_algorithm = None
@@ -488,9 +489,9 @@ class TpModelWorker(BaseTpWorker):
         )
         return (
             self.model_runner.max_total_num_tokens,
-            self.server_args.max_prefill_tokens,
+            get_schedule().max_prefill_tokens,
             self.model_runner.max_running_requests,
-            self.server_args.max_queued_requests,
+            get_schedule().max_queued_requests,
             max_req_len,
             max_req_len - 5,
             self.random_seed,

python/sglang/srt/mem_cache/base_prefix_cache.py

@@ -23,6 +23,7 @@ from sglang.srt.observability.metrics_collector import (
     RadixCacheMetricsCollector,
     resolve_collector_class,
 )
+from sglang.srt.runtime_context import get_observability
 
 if TYPE_CHECKING:
     from sglang.srt.managers.schedule_batch import Req
@@ -238,8 +239,8 @@ class BasePrefixCache(ABC, PrefixCacheTrait):
 
         server_args = get_server_args()
         labels = {"cache_type": self.__class__.__name__}
-        if server_args.extra_metric_labels:
+        if get_observability().extra_metric_labels:
-            labels.update(server_args.extra_metric_labels)
+            labels.update(get_observability().extra_metric_labels)
         radix_cache_cls = resolve_collector_class(
             server_args,
             STAT_LOGGER_ROLE_RADIX_CACHE,

python/sglang/srt/mem_cache/common.py

@@ -16,7 +16,12 @@ from sglang.srt.hardware_backend.npu.dsv4.dsv4_common_hooks import (
 from sglang.srt.mem_cache.allocator.swa import SWATokenToKVPoolAllocator
 from sglang.srt.mem_cache.base_prefix_cache import BasePrefixCache, EvictParams
 from sglang.srt.mem_cache.memory_pool import HybridReqToTokenPool, ReqToTokenPool
-from sglang.srt.runtime_context import get_server_args
+from sglang.srt.runtime_context import (
+    get_schedule,
+    get_server_args,
+    get_serving,
+    get_spec,
+)
 from sglang.srt.utils.common import ceil_align
 
 if TYPE_CHECKING:
@@ -179,12 +184,12 @@ def _release_overallocated_kv_indices(
     req: Req, start_p: int, end_p: int, tree_cache: BasePrefixCache
 ) -> None:
     global_server_args = get_server_args()
-    page_size = global_server_args.page_size
+    page_size = get_schedule().page_size
-    spec_algo = global_server_args.speculative_algorithm
+    spec_algo = get_spec().speculative_algorithm
 
     # strip_thinking_cache intentionally reports output tokens as overallocated
     # so they fall into the free path below (#22373).
-    if spec_algo is None and not global_server_args.strip_thinking_cache:
+    if spec_algo is None and not get_serving().strip_thinking_cache:
         assert (
             start_p == end_p
         ), f"Unexpected overallocated KV cache, {req.kv_committed_len=}, {req.kv.kv_allocated_len=}"

python/sglang/srt/mem_cache/deepseek_v4_memory_pool.py

@@ -21,7 +21,7 @@ from sglang.srt.environ import envs
 from sglang.srt.mem_cache.base_swa_memory_pool import BaseSWAKVPool
 from sglang.srt.mem_cache.deepseek_v4_compress_state import CompressStatePool
 from sglang.srt.mem_cache.memory_pool import KVCache
-from sglang.srt.runtime_context import get_server_args
+from sglang.srt.runtime_context import get_exec, get_server_args, get_spec
 from sglang.srt.utils import ceil_div, is_hip
 
 logger = logging.getLogger(__name__)
@@ -276,7 +276,7 @@ class DeepSeekV4IndexerPool(KVCache):
             end_layer,
         )
         self.index_head_dim = index_head_dim
-        self.use_fp4_indexer = get_server_args().enable_deepseek_v4_fp4_indexer
+        self.use_fp4_indexer = get_exec().kernel.enable_deepseek_v4_fp4_indexer
 
         self._create_buffer()
 
@@ -577,8 +577,8 @@ class DeepSeekV4TokenToKVPool(BaseSWAKVPool):
             self.c128_kv_pool = None
             server_args = get_server_args()
             spec_extra = (
-                (server_args.speculative_num_draft_tokens - 1)
+                (get_spec().speculative_num_draft_tokens - 1)
-                if server_args.speculative_algorithm is not None
+                if get_spec().speculative_algorithm is not None
                 else 0
             )
             self.unified_kv_pool = DeepSeekV4UnifiedKVPool(
@@ -659,7 +659,7 @@ class DeepSeekV4TokenToKVPool(BaseSWAKVPool):
 
     def get_ring_size(self, compress_ratio: int) -> int:
         server_args = get_server_args()
-        is_speculative = server_args.speculative_algorithm is not None
+        is_speculative = get_spec().speculative_algorithm is not None
         return get_compress_state_ring_size(compress_ratio, is_speculative)
 
     def translate_loc_from_full_to_swa(self, kv_indices: torch.Tensor):

python/sglang/srt/mem_cache/kv_cache_configurator.py

@@ -58,7 +58,15 @@ from sglang.srt.mem_cache.memory_pool import (
 )
 from sglang.srt.mem_cache.swa_memory_pool import SWAKVPool
 from sglang.srt.platforms import current_platform
-from sglang.srt.runtime_context import get_model, get_parallel
+from sglang.srt.runtime_context import (
+    get_context,
+    get_disagg,
+    get_exec,
+    get_memory,
+    get_parallel,
+    get_schedule,
+    get_spec,
+)
 from sglang.srt.server_args import ServerArgs
 from sglang.srt.speculative.spec_info import SpeculativeAlgorithm
 from sglang.srt.utils.common import (
@@ -184,6 +192,7 @@ class KVCacheConfigurator:
     token_to_kv_pool_allocator: Optional[BaseTokenToKVPoolAllocator]
     memory_pool_config: Optional[MemoryPoolConfig]
     draft_model_idx: Optional[int] = None
+    kv_cache_dtype_str: Optional[str] = None
     mambaish_config: Optional[Any] = field(init=False)
     hybrid_gdn_config: Optional[Any] = field(init=False)
     is_inkling_mtp_draft: bool = field(init=False)
@@ -211,7 +220,7 @@ class KVCacheConfigurator:
     def _build_fp4_quant_method(self, *, num_layers: int):
         if not is_float4_e2m1fn_x2(self.kv_cache_dtype):
             return None
-        quant_name = resolve_kv_cache_quant(get_model().kv_cache_dtype)
+        quant_name = resolve_kv_cache_quant(self.kv_cache_dtype_str)
         if quant_name is None:
             return None
         quant_method = get_kv_cache_quant_method(
@@ -314,8 +323,8 @@ class KVCacheConfigurator:
         # from one byte buffer, then return. Gated to the target worker
         # (req_to_token_pool is None); supports hybrid Mamba and hybrid SWA (not DSV4).
         if (
-            self.server_args.enable_unified_memory
+            get_memory().enable_unified_memory
-            and self.server_args.disaggregation_mode == "null"
+            and get_disagg().disaggregation_mode == "null"
             and req_to_token_pool is None
         ):
             if self.mambaish_config is not None:
@@ -364,13 +373,13 @@ class KVCacheConfigurator:
                 # TARGET_VERIFY, so their pools skip the per-step intermediate
                 # (SpeculativeState) buffers only the target pool consumes.
                 req_to_token_pool = req_to_token_pool.clone_with_new_mamba(
-                    mamba_size=self.server_args.max_mamba_cache_size,
+                    mamba_size=get_schedule().max_mamba_cache_size,
                     mamba_spec_state_size=sizes.max_running_requests,
                     cache_params=self.mambaish_config.mamba2_cache_params,
                     device=self.device,
                     enable_mamba_extra_buffer=self.server_args.enable_mamba_extra_buffer(),
                     draft_model_idx=self.draft_model_idx,
-                    speculative_eagle_topk=self.server_args.speculative_eagle_topk,
+                    speculative_eagle_topk=get_spec().speculative_eagle_topk,
                 )
 
         # Initialize token_to_kv_pool
@@ -400,7 +409,7 @@ class KVCacheConfigurator:
         # unsupported pool families before allocation. Keep this guard here so
         # future pool-selection refactors fail at boot instead of on first use.
         if (
-            self.server_args.prefill_only_disable_kv_cache
+            get_schedule().prefill_only_disable_kv_cache
             and not self.is_draft_worker
             and not isinstance(token_to_kv_pool, NoOpMHATokenToKVPool)
         ):
@@ -435,8 +444,8 @@ class KVCacheConfigurator:
         assert self.page_size >= 1, f"page_size must be >= 1, got {self.page_size}"
         # Mirror the non-shared path's extra_max_context_len computation.
         extra_max_context_len = 4
-        if self.server_args.speculative_num_draft_tokens is not None:
+        if get_spec().speculative_num_draft_tokens is not None:
-            extra_max_context_len += self.server_args.speculative_num_draft_tokens
+            extra_max_context_len += get_spec().speculative_num_draft_tokens
 
         mamba_layer_ids = [
             i
@@ -471,14 +480,14 @@ class KVCacheConfigurator:
             model_context_len=self.model_config.context_len,
             extra_max_context_len=extra_max_context_len,
             max_total_num_tokens=max_total_num_tokens,
-            max_mamba_cache_size=self.server_args.max_mamba_cache_size,
+            max_mamba_cache_size=get_schedule().max_mamba_cache_size,
             max_num_reqs=max_num_reqs,
-            enable_memory_saver=self.server_args.enable_memory_saver,
+            enable_memory_saver=get_exec().features.enable_memory_saver,
             enable_mamba_extra_buffer=self.server_args.enable_mamba_extra_buffer(),
-            speculative_num_draft_tokens=self.server_args.speculative_num_draft_tokens,
+            speculative_num_draft_tokens=get_spec().speculative_num_draft_tokens,
-            disable_overlap_schedule=self.server_args.disable_overlap_schedule,
+            disable_overlap_schedule=get_schedule().disable_overlap_schedule,
-            need_sort=self.server_args.disaggregation_mode in ("decode", "prefill"),
+            need_sort=get_disagg().disaggregation_mode in ("decode", "prefill"),
-            mamba_full_memory_ratio=self.server_args.mamba_full_memory_ratio,
+            mamba_full_memory_ratio=get_schedule().mamba_full_memory_ratio,
             # Overlap mode: the allocator's `free` drops a wait_stream(forward_stream)
             # barrier so eager compaction serializes after the in-flight forward's
             # v2p/KV reads. Near-no-op in normal mode.
@@ -511,13 +520,13 @@ class KVCacheConfigurator:
         ), "unified memory pool does not support MLA-SWA hybrid yet"
         # Mirror the non-shared path's extra_max_context_len computation.
         extra_max_context_len = 4
-        if self.server_args.speculative_num_draft_tokens is not None:
+        if get_spec().speculative_num_draft_tokens is not None:
-            extra_max_context_len += self.server_args.speculative_num_draft_tokens
+            extra_max_context_len += get_spec().speculative_num_draft_tokens
         req_to_token_pool = ReqToTokenPool(
             size=max_num_reqs,
             max_context_len=self.model_config.context_len + extra_max_context_len,
             device=self.device,
-            enable_memory_saver=self.server_args.enable_memory_saver,
+            enable_memory_saver=get_exec().features.enable_memory_saver,
         )
 
         head_num = self.model_config.get_num_kv_heads(get_parallel().attn_tp_size)
@@ -567,8 +576,8 @@ class KVCacheConfigurator:
             full_attention_layer_ids=full_attention_layer_ids,
             full_max_total_num_tokens=full_max_total_num_tokens,
             swa_max_total_num_tokens=swa_max_total_num_tokens,
-            enable_memory_saver=self.server_args.enable_memory_saver,
+            enable_memory_saver=get_exec().features.enable_memory_saver,
-            need_sort=self.server_args.disaggregation_mode in ("decode", "prefill"),
+            need_sort=get_disagg().disaggregation_mode in ("decode", "prefill"),
             # Overlap mode: same wait_stream(forward_stream) rationale as
             # `_init_unified_mamba_pools`.
             forward_stream=self.forward_stream,
@@ -588,7 +597,7 @@ class KVCacheConfigurator:
         is_dsv4_model: bool,
         current_platform,
     ):
-        if not self.server_args.prefill_only_disable_kv_cache or self.is_draft_worker:
+        if not get_schedule().prefill_only_disable_kv_cache or self.is_draft_worker:
             return
 
         unsupported_pool_family = None
@@ -623,9 +632,9 @@ class KVCacheConfigurator:
     def _build_req_to_token_pool(self, *, max_num_reqs: int) -> ReqToTokenPool:
         extra_max_context_len = get_req_to_token_extra_context_len(self.server_args)
 
-        if self.server_args.disaggregation_mode == "decode":
+        if get_disagg().disaggregation_mode == "decode":
             # Extra slots for pre-allocated requests
-            pre_alloc_size = self.server_args.disaggregation_decode_extra_slots
+            pre_alloc_size = get_disagg().disaggregation_decode_extra_slots
             if self.mambaish_config:
                 req_to_token_pool = self._build_hybrid_mamba_decode_req_pool(
                     max_num_reqs=max_num_reqs,
@@ -665,7 +674,7 @@ class KVCacheConfigurator:
             size=max_num_reqs,
             max_context_len=self.model_config.context_len + extra_max_context_len,
             device=self.device,
-            enable_memory_saver=self.server_args.enable_memory_saver,
+            enable_memory_saver=get_exec().features.enable_memory_saver,
             cache_params=self.mambaish_config.mamba2_cache_params,
             mamba_layer_ids=(
                 [
@@ -675,16 +684,16 @@ class KVCacheConfigurator:
                 ]
             ),
             speculative_num_draft_tokens=self.server_args.max_speculative_num_draft_tokens,
-            speculative_eagle_topk=self.server_args.speculative_eagle_topk,
+            speculative_eagle_topk=get_spec().speculative_eagle_topk,
             enable_mamba_extra_buffer=self.server_args.enable_mamba_extra_buffer(),
             pre_alloc_size=pre_alloc_size,
-            enable_overlap_schedule=not self.server_args.disable_overlap_schedule,
+            enable_overlap_schedule=not get_schedule().disable_overlap_schedule,
-            mamba_size=self.server_args.max_mamba_cache_size,
+            mamba_size=get_schedule().max_mamba_cache_size,
             start_layer=self.layer_info.start_layer,
-            linear_replayssm_cache_len=self.server_args.linear_replayssm_cache_len,
+            linear_replayssm_cache_len=get_exec().mamba.linear_replayssm_cache_len,
-            mamba_envelope_layout=self.server_args.enable_page_major_kv_layout,
+            mamba_envelope_layout=get_memory().enable_page_major_kv_layout,
             enable_gdn_replayssm_spec=(
-                self.server_args.enable_gdn_replayssm_spec
+                get_exec().mamba.enable_gdn_replayssm_spec
                 and self.hybrid_gdn_config is not None
             ),
         )
@@ -708,7 +717,7 @@ class KVCacheConfigurator:
             size=max_num_reqs,
             max_context_len=self.model_config.context_len + extra_max_context_len,
             device=self.device,
-            enable_memory_saver=self.server_args.enable_memory_saver,
+            enable_memory_saver=get_exec().features.enable_memory_saver,
             pre_alloc_size=pre_alloc_size,
         )
         return req_to_token_pool
@@ -721,11 +730,11 @@ class KVCacheConfigurator:
     ) -> ReqToTokenPool:
         req_to_token_pool = HybridReqToTokenPool(
             size=max_num_reqs,
-            mamba_size=self.server_args.max_mamba_cache_size,
+            mamba_size=get_schedule().max_mamba_cache_size,
             mamba_spec_state_size=max_num_reqs,
             max_context_len=self.model_config.context_len + extra_max_context_len,
             device=self.device,
-            enable_memory_saver=self.server_args.enable_memory_saver,
+            enable_memory_saver=get_exec().features.enable_memory_saver,
             cache_params=self.mambaish_config.mamba2_cache_params,
             mamba_layer_ids=(
                 [
@@ -737,14 +746,14 @@ class KVCacheConfigurator:
             enable_mamba_extra_buffer=self.server_args.enable_mamba_extra_buffer(),
             enable_mamba_extra_buffer_lazy=self.server_args.enable_mamba_extra_buffer_lazy(),
             speculative_num_draft_tokens=self.server_args.max_speculative_num_draft_tokens,
-            speculative_eagle_topk=self.server_args.speculative_eagle_topk,
+            speculative_eagle_topk=get_spec().speculative_eagle_topk,
-            enable_overlap_schedule=not self.server_args.disable_overlap_schedule,
+            enable_overlap_schedule=not get_schedule().disable_overlap_schedule,
             start_layer=self.layer_info.start_layer,
-            enable_linear_replayssm=self.server_args.enable_linear_replayssm,
+            enable_linear_replayssm=get_exec().mamba.enable_linear_replayssm,
-            linear_replayssm_cache_len=self.server_args.linear_replayssm_cache_len,
+            linear_replayssm_cache_len=get_exec().mamba.linear_replayssm_cache_len,
-            mamba_envelope_layout=self.server_args.enable_page_major_kv_layout,
+            mamba_envelope_layout=get_memory().enable_page_major_kv_layout,
             enable_gdn_replayssm_spec=(
-                self.server_args.enable_gdn_replayssm_spec
+                get_exec().mamba.enable_gdn_replayssm_spec
                 and self.hybrid_gdn_config is not None
             ),
         )
@@ -770,7 +779,7 @@ class KVCacheConfigurator:
             size=max_num_reqs,
             max_context_len=self.model_config.context_len + extra_max_context_len,
             device=self.device,
-            enable_memory_saver=self.server_args.enable_memory_saver,
+            enable_memory_saver=get_exec().features.enable_memory_saver,
         )
         return req_to_token_pool
 
@@ -786,7 +795,7 @@ class KVCacheConfigurator:
         # selected by swapping in the PageMajorMHATokenToKVPool subclass. The
         # default keeps upstream's per-layer layout. The Mamba state pool is routed
         # separately via `mamba_envelope_layout` on the req-to-token pool above.
-        enable_page_major = self.server_args.enable_page_major_kv_layout
+        enable_page_major = get_memory().enable_page_major_kv_layout
         mha_pool_class = (
             PageMajorMHATokenToKVPool if enable_page_major else MHATokenToKVPool
         )
@@ -894,7 +903,7 @@ class KVCacheConfigurator:
         c128_state_dtype: Optional[torch.dtype],
         req_to_token_pool: ReqToTokenPool,
     ) -> KVCache:
-        swa_page_size = self.server_args.page_size
+        swa_page_size = get_schedule().page_size
         if not _is_npu:
             assert swa_page_size == 256, "In paged swa mode, page_size must be 256."
 
@@ -928,12 +937,12 @@ class KVCacheConfigurator:
             # sliding eviction in ``ScheduleBatch._evict_swa``.
             c4_state_pool_size = npu_state_pool_size(
                 ratio=4,
-                page_size=self.server_args.page_size,
+                page_size=get_schedule().page_size,
                 max_num_reqs=max_running_requests,
             )
             c128_state_pool_size = npu_state_pool_size(
                 ratio=128,
-                page_size=self.server_args.page_size,
+                page_size=get_schedule().page_size,
                 max_num_reqs=max_running_requests,
             )
         else:
@@ -951,7 +960,7 @@ class KVCacheConfigurator:
             c128_size=c128_max_total_num_tokens,
             c4_state_pool_size=c4_state_pool_size,
             c128_state_pool_size=c128_state_pool_size,
-            page_size=self.server_args.page_size,
+            page_size=get_schedule().page_size,
             swa_page_size=swa_page_size,
             sliding_window=self.model_config.window_size,
             dtype=self.kv_cache_dtype,
@@ -962,11 +971,11 @@ class KVCacheConfigurator:
             indexer_head_dim=self.model_config.index_head_dim,
             layer_num=self.layer_info.num_effective_layers,
             device=self.device,
-            enable_memory_saver=self.server_args.enable_memory_saver,
+            enable_memory_saver=get_exec().features.enable_memory_saver,
             compression_ratios=compression_ratios,
             start_layer=self.layer_info.start_layer,
             end_layer=self.layer_info.end_layer,
-            enable_hisparse=self.server_args.enable_hisparse,
+            enable_hisparse=get_memory().enable_hisparse,
             online_mtp_max_draft_tokens=(
                 self.server_args.max_speculative_num_draft_tokens or 0
             ),
@@ -977,7 +986,7 @@ class KVCacheConfigurator:
         PoolCls = current_platform.get_dsa_kv_pool_cls()
         token_to_kv_pool = PoolCls(
             max_total_num_tokens,
-            page_size=self.server_args.page_size,
+            page_size=get_schedule().page_size,
             dtype=self.kv_cache_dtype,
             kv_lora_rank=self.model_config.kv_lora_rank,
             qk_rope_head_dim=self.model_config.qk_rope_head_dim,
@@ -988,7 +997,7 @@ class KVCacheConfigurator:
                 kv_cache_dtype=self.kv_cache_dtype,
                 server_args=self.server_args,
             ),
-            enable_memory_saver=self.server_args.enable_memory_saver,
+            enable_memory_saver=get_exec().features.enable_memory_saver,
             start_layer=self.layer_info.start_layer,
             end_layer=self.layer_info.end_layer,
             index_head_dim=get_dsa_index_head_dim(self.model_config.hf_config),
@@ -1001,14 +1010,14 @@ class KVCacheConfigurator:
         PoolCls = current_platform.get_mla_kv_pool_cls()
         token_to_kv_pool = PoolCls(
             max_total_num_tokens,
-            page_size=self.server_args.page_size,
+            page_size=get_schedule().page_size,
             dtype=self.kv_cache_dtype,
             kv_lora_rank=self.model_config.kv_lora_rank,
             qk_rope_head_dim=self.model_config.qk_rope_head_dim,
             index_head_dim=(self.model_config.index_head_dim if is_dsa_model else None),
             layer_num=self.layer_info.num_effective_layers,
             device=self.device,
-            enable_memory_saver=self.server_args.enable_memory_saver,
+            enable_memory_saver=get_exec().features.enable_memory_saver,
             start_layer=self.layer_info.start_layer,
             end_layer=self.layer_info.end_layer,
         )
@@ -1018,13 +1027,13 @@ class KVCacheConfigurator:
         PoolCls = current_platform.get_mha_kv_pool_cls()
         token_to_kv_pool = PoolCls(
             max_total_num_tokens,
-            page_size=self.server_args.page_size,
+            page_size=get_schedule().page_size,
             dtype=self.kv_cache_dtype,
             head_num=self.model_config.get_num_kv_heads(get_parallel().attn_tp_size),
             head_dim=self.model_config.head_dim,
             layer_num=self.layer_info.num_effective_layers,
             device=self.device,
-            enable_memory_saver=self.server_args.enable_memory_saver,
+            enable_memory_saver=get_exec().features.enable_memory_saver,
             start_layer=self.layer_info.start_layer,
             end_layer=self.layer_info.end_layer,
         )
@@ -1055,7 +1064,7 @@ class KVCacheConfigurator:
         token_to_kv_pool = SWAKVPool(
             size=full_max_total_num_tokens,
             size_swa=swa_max_total_num_tokens,
-            page_size=self.server_args.page_size,
+            page_size=get_schedule().page_size,
             dtype=self.kv_cache_dtype,
             post_capture_active=self.post_capture_kv_active,
             head_num=self.model_config.get_num_kv_heads(get_parallel().attn_tp_size),
@@ -1077,14 +1086,14 @@ class KVCacheConfigurator:
 
         token_to_kv_pool = NPUMLATokenToKVPool(
             max_total_num_tokens,
-            page_size=self.server_args.page_size,
+            page_size=get_schedule().page_size,
             dtype=self.kv_cache_dtype,
             kv_lora_rank=self.model_config.kv_lora_rank,
             qk_rope_head_dim=self.model_config.qk_rope_head_dim,
             index_head_dim=(self.model_config.index_head_dim if is_dsa_model else None),
             layer_num=self.layer_info.num_effective_layers,
             device=self.device,
-            enable_memory_saver=self.server_args.enable_memory_saver,
+            enable_memory_saver=get_exec().features.enable_memory_saver,
             start_layer=self.layer_info.start_layer,
             end_layer=self.layer_info.end_layer,
         )
@@ -1097,13 +1106,13 @@ class KVCacheConfigurator:
 
         token_to_kv_pool = NPUMHATokenToKVPool(
             max_total_num_tokens,
-            page_size=self.server_args.page_size,
+            page_size=get_schedule().page_size,
             dtype=self.kv_cache_dtype,
             head_num=self.model_config.get_num_kv_heads(get_parallel().attn_tp_size),
             head_dim=self.model_config.head_dim,
             layer_num=self.layer_info.num_effective_layers,
             device=self.device,
-            enable_memory_saver=self.server_args.enable_memory_saver,
+            enable_memory_saver=get_exec().features.enable_memory_saver,
             start_layer=self.layer_info.start_layer,
             end_layer=self.layer_info.end_layer,
         )
@@ -1117,7 +1126,7 @@ class KVCacheConfigurator:
             dsa_cp_layer_shard_size,
         ) = get_glm_dsa_cp_layer_shard_info(self)
         pool_kwargs = {}
-        if self.server_args.enable_hisparse:
+        if get_memory().enable_hisparse:
             PoolCls = HiSparseDSATokenToKVPool
             from sglang.srt.mem_cache.sparsity import parse_hisparse_config
 
@@ -1137,7 +1146,7 @@ class KVCacheConfigurator:
             PoolCls = DSATokenToKVPool
         token_to_kv_pool = PoolCls(
             max_total_num_tokens,
-            page_size=self.server_args.page_size,
+            page_size=get_schedule().page_size,
             dtype=self.kv_cache_dtype,
             kv_lora_rank=self.model_config.kv_lora_rank,
             qk_rope_head_dim=self.model_config.qk_rope_head_dim,
@@ -1148,7 +1157,7 @@ class KVCacheConfigurator:
                 kv_cache_dtype=self.kv_cache_dtype,
                 server_args=self.server_args,
             ),
-            enable_memory_saver=self.server_args.enable_memory_saver,
+            enable_memory_saver=get_exec().features.enable_memory_saver,
             start_layer=self.layer_info.start_layer,
             end_layer=self.layer_info.end_layer,
             index_head_dim=get_dsa_index_head_dim(self.model_config.hf_config),
@@ -1159,13 +1168,13 @@ class KVCacheConfigurator:
     def _build_mla_fp4_kv_pool(self, *, max_total_num_tokens: int) -> KVCache:
         token_to_kv_pool = MLATokenToKVPoolFP4(
             max_total_num_tokens,
-            page_size=self.server_args.page_size,
+            page_size=get_schedule().page_size,
             dtype=self.kv_cache_dtype,
             kv_lora_rank=self.model_config.kv_lora_rank,
             qk_rope_head_dim=self.model_config.qk_rope_head_dim,
             layer_num=self.layer_info.num_effective_layers,
             device=self.device,
-            enable_memory_saver=self.server_args.enable_memory_saver,
+            enable_memory_saver=get_exec().features.enable_memory_saver,
             start_layer=self.layer_info.start_layer,
             end_layer=self.layer_info.end_layer,
         )
@@ -1174,13 +1183,13 @@ class KVCacheConfigurator:
     def _build_mla_kv_pool(self, *, max_total_num_tokens: int) -> KVCache:
         token_to_kv_pool = MLATokenToKVPool(
             max_total_num_tokens,
-            page_size=self.server_args.page_size,
+            page_size=get_schedule().page_size,
             dtype=self.kv_cache_dtype,
             kv_lora_rank=self.model_config.kv_lora_rank,
             qk_rope_head_dim=self.model_config.qk_rope_head_dim,
             layer_num=self.layer_info.num_effective_layers,
             device=self.device,
-            enable_memory_saver=self.server_args.enable_memory_saver,
+            enable_memory_saver=get_exec().features.enable_memory_saver,
             start_layer=self.layer_info.start_layer,
             end_layer=self.layer_info.end_layer,
         )
@@ -1207,7 +1216,7 @@ class KVCacheConfigurator:
             }
         swa_pool_class = (
             MHATokenToKVPoolMXFP8
-            if get_model().kv_cache_dtype == "mxfp8"
+            if self.kv_cache_dtype_str == "mxfp8"
             else mha_pool_class
         )
         swa_attention_layer_ids = self.model_config.swa_attention_layer_ids
@@ -1237,7 +1246,7 @@ class KVCacheConfigurator:
         token_to_kv_pool = SWAKVPool(
             size=full_max_total_num_tokens,
             size_swa=size_swa,
-            page_size=self.server_args.page_size,
+            page_size=get_schedule().page_size,
             dtype=self.kv_cache_dtype,
             post_capture_active=self.post_capture_kv_active,
             head_num=self.model_config.get_num_kv_heads(get_parallel().attn_tp_size),
@@ -1245,7 +1254,7 @@ class KVCacheConfigurator:
             swa_attention_layer_ids=swa_attention_layer_ids,
             full_attention_layer_ids=full_attention_layer_ids,
             device=self.device,
-            enable_kv_cache_copy=(self.server_args.speculative_algorithm is not None),
+            enable_kv_cache_copy=(get_spec().speculative_algorithm is not None),
             token_to_kv_pool_class=swa_pool_class,
             **kwargs,
         )
@@ -1260,7 +1269,7 @@ class KVCacheConfigurator:
         )
         token_to_kv_pool = MiniMaxSparseKVPool(
             size=max_total_num_tokens,
-            page_size=self.server_args.page_size,
+            page_size=get_schedule().page_size,
             dtype=self.kv_cache_dtype,
             index_dtype=self.model_dtype,
             head_num=self.model_config.get_num_kv_heads(get_parallel().attn_tp_size),
@@ -1270,7 +1279,7 @@ class KVCacheConfigurator:
             sparse_layer_ids=sparse_layer_ids,
             disable_value_sparse_layer_ids=disable_value_sparse_layer_ids,
             device=self.device,
-            enable_memory_saver=self.server_args.enable_memory_saver,
+            enable_memory_saver=get_exec().features.enable_memory_saver,
             start_layer=self.layer_info.start_layer,
             end_layer=self.layer_info.end_layer,
         )
@@ -1305,11 +1314,11 @@ class KVCacheConfigurator:
         # buffers) for the full-attention layers, same as the SWA branch.
         full_pool_class = (
             MHATokenToKVPoolMXFP8
-            if get_model().kv_cache_dtype == "mxfp8" and not self.use_mla_backend
+            if self.kv_cache_dtype_str == "mxfp8" and not self.use_mla_backend
             else mha_pool_class
         )
         token_to_kv_pool = HybridLinearKVPool(
-            page_size=self.server_args.page_size,
+            page_size=get_schedule().page_size,
             size=max_total_num_tokens,
             dtype=self.kv_cache_dtype,
             head_num=self.model_config.get_num_kv_heads(get_parallel().attn_tp_size),
@@ -1318,8 +1327,8 @@ class KVCacheConfigurator:
             full_attention_layer_ids=full_attention_layer_ids,
             device=self.device,
             mamba_pool=req_to_token_pool.mamba_pool,
-            enable_memory_saver=self.server_args.enable_memory_saver,
+            enable_memory_saver=get_exec().features.enable_memory_saver,
-            enable_kv_cache_copy=(self.server_args.speculative_algorithm is not None),
+            enable_kv_cache_copy=(get_spec().speculative_algorithm is not None),
             use_mla=self.use_mla_backend,
             start_layer=self.layer_info.start_layer,
             full_kv_pool_class=full_pool_class,
@@ -1332,30 +1341,30 @@ class KVCacheConfigurator:
     def _build_mha_fp4_kv_pool(self, *, max_total_num_tokens: int) -> KVCache:
         token_to_kv_pool = MHATokenToKVPoolFP4(
             max_total_num_tokens,
-            page_size=self.server_args.page_size,
+            page_size=get_schedule().page_size,
             dtype=self.kv_cache_dtype,
             head_num=self.model_config.get_num_kv_heads(get_parallel().attn_tp_size),
             head_dim=self.model_config.head_dim,
             v_head_dim=self.model_config.v_head_dim,
             layer_num=self.layer_info.num_effective_layers,
             device=self.device,
-            enable_memory_saver=self.server_args.enable_memory_saver,
+            enable_memory_saver=get_exec().features.enable_memory_saver,
             start_layer=self.layer_info.start_layer,
             end_layer=self.layer_info.end_layer,
-            enable_alt_stream=not self.server_args.enable_pdmux,
+            enable_alt_stream=not get_disagg().enable_pdmux,
-            enable_kv_cache_copy=(self.server_args.speculative_algorithm is not None),
+            enable_kv_cache_copy=(get_spec().speculative_algorithm is not None),
         )
         return token_to_kv_pool
 
     def _build_mha_kv_pool(
         self, *, max_total_num_tokens: int, mha_pool_class: type, quant_method=None
     ) -> KVCache:
-        if get_model().kv_cache_dtype == "mxfp8":
+        if self.kv_cache_dtype_str == "mxfp8":
             pool_cls = MHATokenToKVPoolMXFP8
         else:
             pool_cls = (
                 NoOpMHATokenToKVPool
-                if self.server_args.prefill_only_disable_kv_cache
+                if get_schedule().prefill_only_disable_kv_cache
                 else mha_pool_class
             )
         pool_kwargs = {}
@@ -1365,18 +1374,18 @@ class KVCacheConfigurator:
             pool_kwargs["post_capture_active"] = self.post_capture_kv_active
         token_to_kv_pool = pool_cls(
             max_total_num_tokens,
-            page_size=self.server_args.page_size,
+            page_size=get_schedule().page_size,
             dtype=self.kv_cache_dtype,
             head_num=self.model_config.get_num_kv_heads(get_parallel().attn_tp_size),
             head_dim=self.model_config.head_dim,
             v_head_dim=self.model_config.v_head_dim,
             layer_num=self.layer_info.num_effective_layers,
             device=self.device,
-            enable_memory_saver=self.server_args.enable_memory_saver,
+            enable_memory_saver=get_exec().features.enable_memory_saver,
             start_layer=self.layer_info.start_layer,
             end_layer=self.layer_info.end_layer,
-            enable_alt_stream=not self.server_args.enable_pdmux,
+            enable_alt_stream=not get_disagg().enable_pdmux,
-            enable_kv_cache_copy=(self.server_args.speculative_algorithm is not None),
+            enable_kv_cache_copy=(get_spec().speculative_algorithm is not None),
             **pool_kwargs,
         )
         return token_to_kv_pool
@@ -1391,13 +1400,13 @@ class KVCacheConfigurator:
         token_to_kv_pool_allocator: Optional[BaseTokenToKVPoolAllocator],
     ) -> BaseTokenToKVPoolAllocator:
         # Initialize token_to_kv_pool_allocator
-        need_sort = self.server_args.disaggregation_mode in ("decode", "prefill")
+        need_sort = get_disagg().disaggregation_mode in ("decode", "prefill")
         if token_to_kv_pool_allocator is None:
             if current_platform.is_out_of_tree():
                 AllocatorCls = current_platform.get_paged_allocator_cls()
                 token_to_kv_pool_allocator = AllocatorCls(
                     sizes.max_total_num_tokens,
-                    page_size=self.server_args.page_size,
+                    page_size=get_schedule().page_size,
                     dtype=self.kv_cache_dtype,
                     device=self.device,
                     kvcache=token_to_kv_pool,
@@ -1422,7 +1431,7 @@ class KVCacheConfigurator:
                     token_to_kv_pool_allocator = swa_allocator_cls(
                         sizes.full_max_total_num_tokens,
                         sizes.swa_max_total_num_tokens,
-                        page_size=self.server_args.page_size,
+                        page_size=get_schedule().page_size,
                         dtype=self.kv_cache_dtype,
                         device=self.device,
                         kvcache=token_to_kv_pool,
@@ -1435,7 +1444,7 @@ class KVCacheConfigurator:
 
                     token_to_kv_pool_allocator = NPUPagedTokenToKVPoolAllocator(
                         sizes.max_total_num_tokens,
-                        page_size=self.server_args.page_size,
+                        page_size=get_schedule().page_size,
                         dtype=self.kv_cache_dtype,
                         device=self.device,
                         kvcache=token_to_kv_pool,
@@ -1445,7 +1454,7 @@ class KVCacheConfigurator:
                 if self.is_hybrid_swa and sizes.full_max_total_num_tokens == 0:
                     token_to_kv_pool_allocator = PureSWATokenToKVPoolAllocator(
                         sizes.swa_max_total_num_tokens,
-                        page_size=self.server_args.page_size,
+                        page_size=get_schedule().page_size,
                         dtype=self.kv_cache_dtype,
                         device=self.device,
                         kvcache=token_to_kv_pool,
@@ -1455,14 +1464,14 @@ class KVCacheConfigurator:
                     token_to_kv_pool_allocator = SWATokenToKVPoolAllocator(
                         sizes.full_max_total_num_tokens,
                         sizes.swa_max_total_num_tokens,
-                        page_size=self.server_args.page_size,
+                        page_size=get_schedule().page_size,
                         dtype=self.kv_cache_dtype,
                         device=self.device,
                         kvcache=token_to_kv_pool,
                         need_sort=need_sort,
                     )
                 else:
-                    if self.server_args.enable_hisparse:
+                    if get_memory().enable_hisparse:
                         from sglang.srt.mem_cache.sparsity import (
                             parse_hisparse_config,
                         )
@@ -1470,7 +1479,7 @@ class KVCacheConfigurator:
                         hisparse_cfg = parse_hisparse_config(self.server_args)
                         token_to_kv_pool_allocator = HiSparseTokenToKVPoolAllocator(
                             sizes.max_total_num_tokens,
-                            page_size=self.server_args.page_size,
+                            page_size=get_schedule().page_size,
                             dtype=self.kv_cache_dtype,
                             device=self.device,
                             kvcache=token_to_kv_pool,
@@ -1478,8 +1487,7 @@ class KVCacheConfigurator:
                             host_to_device_ratio=hisparse_cfg.host_to_device_ratio,
                         )
                     elif (
-                        self.server_args.page_size == 1
+                        get_schedule().page_size == 1 and self.server_args.dcp_size == 1
-                        and self.server_args.dcp_size == 1
                     ):
                         token_to_kv_pool_allocator = TokenToKVPoolAllocator(
                             sizes.max_total_num_tokens,
@@ -1491,7 +1499,7 @@ class KVCacheConfigurator:
                     else:
                         token_to_kv_pool_allocator = PagedTokenToKVPoolAllocator(
                             sizes.max_total_num_tokens * self.server_args.dcp_size,
-                            page_size=self.server_args.page_size
+                            page_size=get_schedule().page_size
                             * self.server_args.dcp_size,
                             dtype=self.kv_cache_dtype,
                             device=self.device,
@@ -1499,7 +1507,7 @@ class KVCacheConfigurator:
                             need_sort=need_sort,
                         )
 
-            if self.server_args.enable_hisparse and is_dsv4_model:
+            if get_memory().enable_hisparse and is_dsv4_model:
                 assert self.is_hybrid_swa, "DeepSeek V4 HiSparse requires SWA mode."
                 token_to_kv_pool_allocator = DeepSeekV4HiSparseTokenToKVPoolAllocator(
                     token_to_kv_pool_allocator
@@ -1551,7 +1559,7 @@ class KVCacheConfigurator:
             cpu_group=get_world_group().cpu_group,
         )
 
-        slack_gb = pre_model_load_memory * (1 - self.server_args.mem_fraction_static)
+        slack_gb = pre_model_load_memory * (1 - get_schedule().mem_fraction_static)
         if self.mambaish_config is not None and self.post_capture_kv_active:
             # Mamba state is a fixed pre-capture allocation, so it can't ride the ~0 post-capture slack.
             slack_gb = max(
@@ -1575,7 +1583,7 @@ class KVCacheConfigurator:
             )
             raise ValueError(
                 f"Loaded weights leave no GPU memory for the KV cache under "
-                f"--mem-fraction-static={self.server_args.mem_fraction_static}. "
+                f"--mem-fraction-static={get_schedule().mem_fraction_static}. "
                 f"Raise --mem-fraction-static above "
                 f"{suggested_mem_fraction_static:.3f} "
                 f"(minimum viable = 1 - available/pre = "
@@ -1586,7 +1594,7 @@ class KVCacheConfigurator:
         return int(rest_memory * (1 << 30))  # return in bytes
 
     def _calculate_mamba_ratio(self) -> int:
-        if self.server_args.disable_radix_cache:
+        if get_memory().disable_radix_cache:
             return 1
 
         skip_decode_lock = envs.SGLANG_OPT_MAMBA_SKIP_DECODE_LOCK.get()
@@ -1598,7 +1606,7 @@ class KVCacheConfigurator:
         if self.server_args.enable_mamba_extra_buffer():
             # ping-pong buffer size is 2 when overlap schedule is on, 1 otherwise.
             # Lazy mode saves 1 slot (2 → 1) for overlap; non-overlap already uses 1.
-            if not self.server_args.disable_overlap_schedule:
+            if not get_schedule().disable_overlap_schedule:
                 if self.server_args.enable_mamba_extra_buffer_lazy():
                     additional_ratio = MAMBA_CACHE_V2_ADDITIONAL_RATIO_OVERLAP_LAZY
                 else:
@@ -1622,7 +1630,7 @@ class KVCacheConfigurator:
         Page alignment is handled by the configurator, not here.
         If constraints change the value, the configurator re-runs and re-aligns.
         """
-        user_limit = self.server_args.max_total_tokens
+        user_limit = get_schedule().max_total_tokens
 
         # Apply user-specified upper bound
         if user_limit is not None:
@@ -1652,7 +1660,7 @@ class KVCacheConfigurator:
         estimated = int(token_capacity / self.model_config.context_len * 512)
         estimated = max(min(estimated, 4096), 2048)
 
-        max_num_reqs = self.server_args.max_running_requests
+        max_num_reqs = get_schedule().max_running_requests
         if max_num_reqs is not None:
             requested_per_worker = max_num_reqs // self.ps.attn_dp_size
             max_num_reqs = min(requested_per_worker, token_capacity // 2)
@@ -1663,13 +1671,13 @@ class KVCacheConfigurator:
         if self.mambaish_config is not None:
             ratio = self._calculate_mamba_ratio()
             max_num_reqs = min(
-                max_num_reqs, self.server_args.max_mamba_cache_size // ratio
+                max_num_reqs, get_schedule().max_mamba_cache_size // ratio
             )
 
             if max_num_reqs <= 0:
                 raise RuntimeError(
                     f"Hybrid (mamba/linear-attention) state cache is too small to serve "
-                    f"any requests. max_mamba_cache_size={self.server_args.max_mamba_cache_size}, "
+                    f"any requests. max_mamba_cache_size={get_schedule().max_mamba_cache_size}, "
                     f"mamba_ratio={ratio}, resulting max_num_reqs={max_num_reqs}. "
                     f"Try: (1) reduce --max-running-requests, "
                     f"(2) increase --mem-fraction-static, or "
@@ -1699,7 +1707,7 @@ class KVCacheConfigurator:
         )
         configurator = create_memory_pool_configurator(self)
         config = configurator.finalize_with_max_running_requests(config)
-        config.mem_fraction_static = self.server_args.mem_fraction_static
+        config.mem_fraction_static = get_schedule().mem_fraction_static
         return config
 
     def config_from_budget(
@@ -1715,14 +1723,14 @@ class KVCacheConfigurator:
 
         configurator = create_memory_pool_configurator(self)
         config = configurator.calculate_pool_sizes(
-            budget_bytes, self.server_args.page_size
+            budget_bytes, get_schedule().page_size
         )
         max_tokens = self._apply_token_constraints(config.max_total_num_tokens)
         if cap_tokens is not None:
             max_tokens = min(max_tokens, cap_tokens)
         if max_tokens != config.max_total_num_tokens:
             config = configurator.calculate_pool_sizes_from_max_tokens(
-                max_tokens, self.server_args.page_size
+                max_tokens, get_schedule().page_size
             )
         return config
 
@@ -1735,13 +1743,14 @@ class KVCacheConfigurator:
         # The ring is allocated per slot but is not part of mamba_cache_per_req;
         # the solve must charge it too or num_slots is over-provisioned.
         replayssm_active = (
-            server_args.enable_gdn_replayssm_spec and self.hybrid_gdn_config is not None
+            get_exec().mamba.enable_gdn_replayssm_spec
+            and self.hybrid_gdn_config is not None
         )
         if replayssm_active:
             record_len = (
                 server_args.max_speculative_num_draft_tokens
                 if server_args.max_speculative_num_draft_tokens is not None
-                else server_args.linear_replayssm_cache_len
+                else get_exec().mamba.linear_replayssm_cache_len
             )
             replayssm_ring_per_req = (
                 config.mamba2_cache_params.replayssm_ring_bytes_per_req(
@@ -1751,45 +1760,45 @@ class KVCacheConfigurator:
         else:
             replayssm_ring_per_req = 0
         if has_spec_dec:
-            assert server_args.speculative_num_draft_tokens is not None
+            assert get_spec().speculative_num_draft_tokens is not None
-            assert server_args.max_running_requests is not None
+            assert get_schedule().max_running_requests is not None
 
-        if server_args.max_mamba_cache_size is not None:
+        if get_schedule().max_mamba_cache_size is not None:
             # Use explicitly set max_mamba_cache_size
-            server_args.override(
+            get_context().override(
                 "mamba_pool.per_dp_shard",
-                max_mamba_cache_size=server_args.max_mamba_cache_size
+                max_mamba_cache_size=get_schedule().max_mamba_cache_size
                 // self.ps.attn_dp_size,
             )
             # Reserve intermediate memory based on capped max_num_reqs (+1 padding slot)
             if has_spec_dec and not replayssm_active:
                 ratio = self._calculate_mamba_ratio()
                 capped_reqs = min(
-                    server_args.max_running_requests // self.ps.attn_dp_size,
+                    get_schedule().max_running_requests // self.ps.attn_dp_size,
-                    server_args.max_mamba_cache_size // ratio,
+                    get_schedule().max_mamba_cache_size // ratio,
                 )
                 intermediate_size = (
                     config.mamba2_cache_params.mamba_cache_per_req
                     * (capped_reqs + 1)
-                    * server_args.speculative_num_draft_tokens
+                    * get_spec().speculative_num_draft_tokens
                 )
                 total_rest_memory = total_rest_memory - (intermediate_size / (1 << 30))
         elif (
-            server_args.disable_radix_cache
+            get_memory().disable_radix_cache
-            and server_args.max_running_requests is not None
+            and get_schedule().max_running_requests is not None
         ):
             # Use explicitly set max_running_requests when radix cache is disabled
-            server_args.override(
+            get_context().override(
                 "mamba_pool.from_max_running_requests",
-                max_mamba_cache_size=server_args.max_running_requests
+                max_mamba_cache_size=get_schedule().max_running_requests
                 // self.ps.attn_dp_size,
             )
             # Reserve intermediate memory based on capped max_num_reqs (+1 padding slot)
             if has_spec_dec and not replayssm_active:
                 intermediate_size = (
                     config.mamba2_cache_params.mamba_cache_per_req
-                    * (server_args.max_mamba_cache_size + 1)
+                    * (get_schedule().max_mamba_cache_size + 1)
-                    * server_args.speculative_num_draft_tokens
+                    * get_spec().speculative_num_draft_tokens
                 )
                 total_rest_memory = total_rest_memory - (intermediate_size / (1 << 30))
         else:
@@ -1802,16 +1811,16 @@ class KVCacheConfigurator:
             #   (K + 1) * per_req + (K / ratio + 1) * D * per_req = mamba_budget_bytes
             mamba_budget = (
                 total_rest_memory
-                * server_args.mamba_full_memory_ratio
+                * get_schedule().mamba_full_memory_ratio
-                / (1 + server_args.mamba_full_memory_ratio)
+                / (1 + get_schedule().mamba_full_memory_ratio)
             )
             mamba_budget_bytes = mamba_budget * (1 << 30)
 
             if has_spec_dec and not replayssm_active:
                 ratio = self._calculate_mamba_ratio()
-                D = server_args.speculative_num_draft_tokens
+                D = get_spec().speculative_num_draft_tokens
                 # Joint solve: main_state + intermediate = mamba_budget
-                server_args.override(
+                get_context().override(
                     "mamba_pool.memory_budget_spec",
                     max_mamba_cache_size=int(
                         (mamba_budget_bytes - per_req * (1 + D))
@@ -1821,14 +1830,14 @@ class KVCacheConfigurator:
                 # Intermediate memory is included in mamba_budget, subtract it
                 # so the return value only has main_state subtracted from total
                 capped_reqs = min(
-                    server_args.max_running_requests // self.ps.attn_dp_size,
+                    get_schedule().max_running_requests // self.ps.attn_dp_size,
-                    server_args.max_mamba_cache_size // ratio,
+                    get_schedule().max_mamba_cache_size // ratio,
                 )
                 intermediate_size = per_req * (capped_reqs + 1) * D
                 total_rest_memory = total_rest_memory - (intermediate_size / (1 << 30))
             else:
                 per_slot = per_req + replayssm_ring_per_req
-                server_args.override(
+                get_context().override(
                     "mamba_pool.memory_budget",
                     max_mamba_cache_size=int(
                         (mamba_budget_bytes - per_slot) // per_slot
@@ -1839,10 +1848,10 @@ class KVCacheConfigurator:
         # A non-positive value means GPU memory is insufficient for the requested
         # configuration. Fail fast with actionable advice instead of silently
         # producing garbled output at runtime.
-        if server_args.max_mamba_cache_size <= 0:
+        if get_schedule().max_mamba_cache_size <= 0:
             raise RuntimeError(
                 f"Not enough GPU memory for hybrid (mamba/linear-attention) state cache. "
-                f"Computed max_mamba_cache_size={server_args.max_mamba_cache_size} "
+                f"Computed max_mamba_cache_size={get_schedule().max_mamba_cache_size} "
                 f"(total_rest_memory={total_rest_memory:.2f} GB, "
                 f"mamba_cache_per_req={config.mamba2_cache_params.mamba_cache_per_req / (1 << 20):.2f} MB). "
                 f"Try: (1) reduce --max-running-requests, "
@@ -1853,7 +1862,7 @@ class KVCacheConfigurator:
 
         # +1: the pool's padding slot
         mamba_state_memory = (
-            (server_args.max_mamba_cache_size + 1)
+            (get_schedule().max_mamba_cache_size + 1)
             * (config.mamba2_cache_params.mamba_cache_per_req + replayssm_ring_per_req)
             / (1 << 30)
         )

python/sglang/srt/mem_cache/storage/flexkv/flexkv_radix_cache.py

@@ -42,6 +42,7 @@ from sglang.srt.mem_cache.base_prefix_cache import (
 )
 from sglang.srt.mem_cache.radix_cache import RadixCache, RadixKey, TreeNode
 from sglang.srt.mem_cache.storage.flexkv.flexkv_connector import FlexKVConnector
+from sglang.srt.runtime_context import get_spec
 
 if TYPE_CHECKING:
     from sglang.srt.configs.model_config import ModelConfig
@@ -393,7 +394,7 @@ class FlexKVRadixCache(RadixCache):
         from sglang.srt.runtime_context import get_server_args
 
         global_server_args = get_server_args()
-        topk = global_server_args.speculative_eagle_topk
+        topk = get_spec().speculative_eagle_topk
         enable_kv_committed_len = topk is None or topk == 1
         if enable_kv_committed_len:
             kv_committed_len = req.kv_committed_len

python/sglang/srt/mem_cache/storage/lmcache/lmc_radix_cache.py

@@ -16,7 +16,7 @@ from sglang.srt.mem_cache.base_prefix_cache import (
     MatchResult,
 )
 from sglang.srt.mem_cache.radix_cache import RadixCache, RadixKey, TreeNode
-from sglang.srt.runtime_context import get_server_args
+from sglang.srt.runtime_context import get_memory, get_server_args, get_spec
 from sglang.srt.utils import create_device_stream, device_stream_context
 
 try:
@@ -109,7 +109,7 @@ class LMCRadixCache(RadixCache):
     ):
         super().__init__(params)
 
-        cli_lmc_cfg = get_server_args().lmcache_config_file or ""
+        cli_lmc_cfg = get_memory().lmcache_config_file or ""
 
         kvcache = self.token_to_kv_pool_allocator.get_kvcache()
         connector_kwargs = dict(
@@ -448,7 +448,7 @@ class LMCRadixCache(RadixCache):
             return
 
         global_server_args = get_server_args()
-        topk = global_server_args.speculative_eagle_topk
+        topk = get_spec().speculative_eagle_topk
         enable_kv_committed_len = topk is None or topk == 1
         if enable_kv_committed_len:
             kv_committed_len = req.kv_committed_len

python/sglang/srt/mem_cache/unified_cache/components/mamba_component.py

@@ -35,7 +35,7 @@ from sglang.srt.mem_cache.unified_cache.components.tree_component import (
     TreeComponent,
     get_and_increase_time_counter,
 )
-from sglang.srt.runtime_context import get_server_args
+from sglang.srt.runtime_context import get_exec, get_server_args
 
 if TYPE_CHECKING:
     from sglang.srt.managers.schedule_batch import Req
@@ -66,7 +66,7 @@ class MambaComponent(TreeComponent):
             ), f"MambaComponent requires page_size=1 when mamba_extra_buffer is disabled, got {params.page_size}"
         super().__init__(cache, params)
         self.mamba_cache_chunk_size = get_server_args().mamba_cache_chunk_size
-        self.mamba_max_states_per_path = get_server_args().mamba_max_states_per_path
+        self.mamba_max_states_per_path = get_exec().mamba.mamba_max_states_per_path
         # HiCache state
         self._mamba_pool_host = None  # set to host mamba pool when HiCache enabled
 

python/sglang/srt/model_executor/cpu_graph_runner.py

@@ -37,7 +37,7 @@ from sglang.srt.model_executor.forward_batch_info import (
 )
 from sglang.srt.model_executor.forward_context import ForwardContext, forward_context
 from sglang.srt.model_executor.runner_utils.capture_mode import model_capture_mode
-from sglang.srt.runtime_context import get_flags, get_parallel
+from sglang.srt.runtime_context import get_flags, get_parallel, get_spec
 from sglang.srt.utils import (
     empty_context,
     log_info_on_rank0,
@@ -1027,9 +1027,9 @@ class CPUGraphRunner:
                     retrieve_next_token=None,
                     retrieve_next_sibling=None,
                     retrieve_cum_len=None,
-                    spec_steps=self.model_runner.server_args.speculative_num_steps,
+                    spec_steps=get_spec().speculative_num_steps,
                     topk=self.model_runner.server_args.speculative_eagle_topk,
-                    draft_token_num=self.model_runner.server_args.speculative_num_draft_tokens,
+                    draft_token_num=get_spec().speculative_num_draft_tokens,
                     capture_hidden_mode=CaptureHiddenMode.FULL,
                     seq_lens_sum=None,
                     seq_lens_cpu=None,

python/sglang/srt/model_executor/cuda_graph_config.py

@@ -16,7 +16,7 @@ cuda_graph_config, and the --cuda-graph-config JSON CLI parser.
 
 Module-level imports are pure stdlib — no torch / sglang.srt deps — so
 ServerArgs can import everything here without pulling in backend
-classes. check_cuda_graph_backend lazy-imports get_server_args
+classes. check_cuda_graph_backend lazy-imports the config accessor
 inside the function body to preserve that invariant.
 """
 
@@ -179,15 +179,14 @@ def _diff_phase(actual: PhaseConfig, baseline: PhaseConfig) -> Dict[str, Any]:
 
 def check_cuda_graph_backend(phase: str, backend: str) -> bool:
     """True if cuda_graph_config[phase].backend == backend on the
-    global server args. Returns False if the global server args have not
+    published config. Returns False if the config has not been published
-    been initialized yet (e.g. unit tests, early startup)."""
+    yet (e.g. unit tests, early startup)."""
-    from sglang.srt.runtime_context import get_server_args
+    from sglang.srt.runtime_context import get_exec
 
     try:
-        server_args = get_server_args()
+        cfg = get_exec().graph.cuda_graph_config
     except ValueError:
         return False
-    cfg = server_args.cuda_graph_config
     if cfg is None or phase not in Phase.ALL:
         return False
     return getattr(cfg, phase).backend == backend

python/sglang/srt/model_executor/forward_batch_info.py

@@ -51,7 +51,7 @@ from sglang.srt.layers.dp_attention import (
 from sglang.srt.model_executor.forward_batch_deepseek_mha_mixin import (
     ForwardBatchDeepSeekMHAMixin,
 )
-from sglang.srt.runtime_context import get_parallel, get_server_args
+from sglang.srt.runtime_context import get_exec, get_parallel
 from sglang.srt.utils import (
     is_cuda,
     is_hip,
@@ -965,7 +965,7 @@ class ForwardBatch(ForwardBatchDeepSeekMHAMixin):
             # --enable-mis: every request must carry delimiter indices (the score
             # endpoint always produces MIS-structured requests; consumers index
             # without None-checking).
-            if get_server_args().enable_mis and any(
+            if get_exec().features.enable_mis and any(
                 r.multi_item_delimiter_indices is not None for r in batch.reqs
             ):
                 assert all(
@@ -1134,7 +1134,7 @@ class ForwardBatch(ForwardBatchDeepSeekMHAMixin):
         # batch_size * [3 * seq_len]
         batch_size = self.seq_lens_cpu.shape[0]
         mrope_positions_list = [[]] * batch_size
-        rl_on_policy_target = get_server_args().rl_on_policy_target
+        rl_on_policy_target = get_exec().deterministic.rl_on_policy_target
         for batch_idx in range(batch_size):
             mm_input = batch.multimodal_inputs[batch_idx]
             if self.forward_mode.is_decode():

python/sglang/srt/model_executor/model_runner.py

@@ -162,9 +162,13 @@ from sglang.srt.model_executor.runner import (
 )
 from sglang.srt.platforms import current_platform
 from sglang.srt.runtime_context import (
+    get_context,
+    get_exec,
     get_global_dwdp_manager,
+    get_lora,
+    get_model,
     get_parallel,
-    get_server_args,
+    get_schedule,
     set_global_dwdp_manager,
 )
 from sglang.srt.sampling.sampling_batch_info import SamplingBatchInfo
@@ -322,7 +326,7 @@ class ModelRunner:
             self.init_threads_binding()
 
         # Set float32 matmul precision
-        if get_server_args().enable_tf32_matmul:
+        if get_exec().features.enable_tf32_matmul:
             torch.set_float32_matmul_precision("high")
 
         # Set device early so that TransferEngine init (e.g. Ascend NPU)
@@ -399,7 +403,7 @@ class ModelRunner:
 
     def _initialize_elastic_ep_joiner(self) -> None:
         if not (
-            self.server_args.elastic_ep_backend is not None
+            get_exec().moe.elastic_ep_backend is not None
             and self.server_args.is_ep_scale_joiner
         ):
             return
@@ -473,7 +477,7 @@ class ModelRunner:
             device=self.device,
             gpu_id=self.gpu_id,
             model_config=self.model_config,
-            custom_weight_loaders=self.server_args.custom_weight_loader,
+            custom_weight_loaders=get_model().custom_weight_loader,
             get_model=lambda: self.model,
             update_model_fields=self.update_model_fields,
             recapture_cuda_graph=self.init_decode_cuda_graph,
@@ -527,6 +531,7 @@ class ModelRunner:
             model_config=self.model_config,
             server_args=self.server_args,
             kv_cache_dtype=self.kv_cache_dtype,
+            kv_cache_dtype_str=self.kv_cache_dtype_str,
             model_dtype=self.dtype,
             page_size=self.page_size,
             sliding_window_size=self.sliding_window_size,
@@ -550,7 +555,7 @@ class ModelRunner:
     def init_mindspore_runner(self):
         # Init the mindspore runner
         # for now, there is only some communication initialization work
-        if self.server_args.model_impl.lower() == ModelImpl.MINDSPORE and _is_npu:
+        if get_model().model_impl.lower() == ModelImpl.MINDSPORE and _is_npu:
             from sglang.srt.model_executor.mindspore_runner import init_ms_distributed
 
             init_ms_distributed(
@@ -607,7 +612,7 @@ class ModelRunner:
 
     def init_memory_saver_adapter(self):
         self.memory_saver_adapter = TorchMemorySaverAdapter.create(
-            enable=self.server_args.enable_memory_saver
+            enable=get_exec().features.enable_memory_saver
         )
 
     def maybe_init_remote_instance_transfer_engine(self):
@@ -643,7 +648,7 @@ class ModelRunner:
         )
 
     def maybe_init_lplb_solvers(self):
-        if self.server_args.ep_dispatch_algorithm == "lp" and not self.is_draft_worker:
+        if get_exec().moe.ep_dispatch_algorithm == "lp" and not self.is_draft_worker:
             init_lplb_solvers(model_config=self.model_config)
 
     def maybe_init_eplb_manager(self):
@@ -657,12 +662,12 @@ class ModelRunner:
                 get_expert_backup_client=lambda: self.expert_backup_client,
                 get_weight_updater=lambda: self.weight_updater,
             )
-            if self.server_args.enable_eplb and (not self.is_draft_worker)
+            if get_exec().moe.enable_eplb and (not self.is_draft_worker)
             else None
         )
 
     def maybe_init_elastic_ep(self):
-        if self.server_args.elastic_ep_backend:
+        if get_exec().moe.elastic_ep_backend:
             ElasticEPStateManager.init(self.server_args)
 
     def init_token_oracle(self):
@@ -681,8 +686,8 @@ class ModelRunner:
                 get_model=lambda: self.model,
             )
             if (
-                self.server_args.enable_elastic_expert_backup
+                get_exec().moe.enable_elastic_expert_backup
-                and self.server_args.elastic_ep_backend is not None
+                and get_exec().moe.elastic_ep_backend is not None
             )
             else None
         )
@@ -691,17 +696,17 @@ class ModelRunner:
         # In layered loading, torchao may have been applied
         torchao_applied = getattr(self.model, "torchao_applied", False)
         if not torchao_applied:
-            apply_torchao_config_to_model(self.model, get_server_args().torchao_config)
+            apply_torchao_config_to_model(self.model, get_exec().graph.torchao_config)
         supports_torch_tp = getattr(self.model, "supports_torch_tp", False)
         if self.ps.tp_size > 1 and supports_torch_tp:
             self.apply_torch_tp()
 
     def maybe_init_lora_manager(self):
-        if self.server_args.enable_lora:
+        if get_lora().enable_lora:
             self.init_lora_manager()
 
     def maybe_enable_batch_invariant_mode(self):
-        if self.server_args.enable_deterministic_inference:
+        if get_exec().deterministic.enable_deterministic_inference:
             from sglang.srt.batch_invariant_ops import enable_batch_invariant_mode
 
             enable_batch_invariant_mode()
@@ -996,8 +1001,8 @@ class ModelRunner:
             remote_instance_weight_transporter_engine=self.remote_instance_weight_transporter.engine,
             remote_instance_weight_transporter_session_id=self.remote_instance_weight_transporter.session_id,
             draft_model_idx=self.draft_model_idx,
-            weight_cache_mode=self.server_args.weight_cache_mode,
+            weight_cache_mode=get_model().weight_cache_mode,
-            weight_cache_socket=self.server_args.weight_cache_socket,
+            weight_cache_socket=get_model().weight_cache_socket,
         )
 
         # If the weight cache is enabled, override the load format to IPC_CACHE
@@ -1038,7 +1043,7 @@ class ModelRunner:
             get_offloader().post_init()
 
         # Register model for layerwise NVTX profiling if enabled
-        if self.server_args.enable_layerwise_nvtx_marker:
+        if get_exec().comm.enable_layerwise_nvtx_marker:
             pyt_hooks = PytHooks()
             pyt_hooks.register_hooks(self.model, module_prefix="model")
 
@@ -1095,7 +1100,7 @@ class ModelRunner:
         )
 
         dist_barrier_after_load(
-            elastic_ep_backend=self.server_args.elastic_ep_backend,
+            elastic_ep_backend=get_exec().moe.elastic_ep_backend,
             tp_rank=self.ps.tp_rank,
             is_ep_joiner=self.server_args.is_ep_joiner,
         )
@@ -1115,16 +1120,16 @@ class ModelRunner:
         self.lora_manager = LoRAManager(
             base_model=self.model,
             base_hf_config=self.model_config.hf_config,
-            max_loras_per_batch=self.server_args.max_loras_per_batch,
+            max_loras_per_batch=get_lora().max_loras_per_batch,
             load_config=self.load_config,
             dtype=self.dtype,
             server_args=self.server_args,
-            lora_backend=self.server_args.lora_backend,
+            lora_backend=get_lora().lora_backend,
             tp_size=self.ps.tp_size,
             tp_rank=self.ps.tp_rank,
-            max_lora_rank=self.server_args.max_lora_rank,
+            max_lora_rank=get_lora().max_lora_rank,
-            target_modules=self.server_args.lora_target_modules,
+            target_modules=get_lora().lora_target_modules,
-            lora_paths=self.server_args.lora_paths,
+            lora_paths=get_lora().lora_paths,
         )
         if not cuda_graph_fully_disabled():
             init_lora_cuda_graph_moe_buffers(
@@ -1157,29 +1162,10 @@ class ModelRunner:
         else:
             return self.max_total_num_tokens
 
-    def _record_kv_cache_dtype(self, resolved: str) -> None:
-        # the weight-resolved kv-cache dtype is written to the config
-        # bags via get_context().override, so get_model().kv_cache_dtype readers
-        # see it. server_args stays the pristine RAW record -- configure_kv_cache
-        # _dtype reads it as the resolver INPUT. A draft / mock runner whose
-        # server_args is not the published object keeps the private-bag write.
-        from sglang.srt.runtime_context import get_context
-
-        if get_context()._server_args is self.server_args:
-            get_context().override(
-                "ModelRunner.configure_kv_cache_dtype", kv_cache_dtype=resolved
-            )
-        else:
-            self.server_args.override(
-                "ModelRunner.configure_kv_cache_dtype", kv_cache_dtype=resolved
-            )
-
     def configure_kv_cache_dtype(self):
         spec_algorithm = getattr(self, "spec_algorithm", None)
         resolved_kv_cache_dtype, self.kv_cache_dtype = (
             kv_cache_dtype.configure_kv_cache_dtype(
-                # RAW user intent = resolver INPUT; server_args stays pristine
-                # so read it here -- not the resolved get_model() bag.
                 server_args_kv_cache_dtype=self.server_args.kv_cache_dtype,
                 model=getattr(self, "model", None),
                 model_dtype=getattr(self, "dtype", torch.bfloat16),
@@ -1201,8 +1187,6 @@ class ModelRunner:
             if resolved_kv_cache_dtype is not None
             else self.server_args.kv_cache_dtype
         )
-        if resolved_kv_cache_dtype is not None:
-            self._record_kv_cache_dtype(resolved_kv_cache_dtype)
 
     def _get_attention_backend(self, init_new_workspace: bool = False):
         return get_attention_backend(
@@ -1391,7 +1375,7 @@ class ModelRunner:
                 )
         output.expert_distribution_metrics = recorder_outputs.get("metrics")
 
-        no_copy_to_cpu = not self.server_args.disable_overlap_schedule
+        no_copy_to_cpu = not get_schedule().disable_overlap_schedule
         if (
             not self.is_draft_worker
             and (experts_capturer := get_global_experts_capturer()) is not None
@@ -1421,7 +1405,7 @@ class ModelRunner:
             self.msprobe_debugger.stop()
             self.msprobe_debugger.step()
 
-        if self.server_args.elastic_ep_backend is not None:
+        if get_exec().moe.elastic_ep_backend is not None:
             self.maybe_join_ep_ranks()
 
         return output
@@ -1852,7 +1836,7 @@ class ModelRunner:
         local_timeout = (
             state.pending_since is not None
             and time.monotonic() - state.pending_since
-            > self.server_args.elastic_ep_scale_timeout
+            > get_exec().moe.elastic_ep_scale_timeout
         )
         timeout = state.active_ranks.new_tensor(int(local_timeout))
         dist.all_reduce(timeout, op=dist.ReduceOp.MAX, group=dist.group.WORLD)
@@ -1922,7 +1906,7 @@ class ModelRunner:
         load_config: LoadConfig,
     ) -> None:
         self.model = new_model
-        self.server_args.override(
+        get_context().override(
             "model_runner.update_model_fields",
             model_path=model_path,
             load_format=load_format,

python/sglang/srt/model_executor/model_runner_components/remote_instance_weight_transporter.py

@@ -11,6 +11,7 @@ from sglang.srt.model_loader.remote_instance_weight_loader_utils import (
     RemoteInstanceWeightLoaderBackend,
     register_memory_region,
 )
+from sglang.srt.runtime_context import get_model
 from sglang.srt.server_args import ServerArgs
 from sglang.srt.utils.network import NetworkAddress, get_local_ip_auto
 
@@ -58,7 +59,7 @@ class RemoteInstanceWeightTransporter:
             # ModelExpress owns TransferEngine memory registration and metadata
             # publishing for backend=modelexpress. Re-registering here would
             # overlap the same weight buffers.
-            and self.server_args.remote_instance_weight_loader_backend
+            and get_model().remote_instance_weight_loader_backend
             != RemoteInstanceWeightLoaderBackend.MODELEXPRESS
             and self.engine is not None
             and self.weight_info is None
@@ -84,7 +85,7 @@ class RemoteInstanceWeightTransporter:
         else:
             bootstrap_host = "127.0.0.1"
 
-        bootstrap_port = self.server_args.engine_info_bootstrap_port
+        bootstrap_port = get_model().engine_info_bootstrap_port
         bootstrap_na = NetworkAddress(bootstrap_host, bootstrap_port)
         url = f"{bootstrap_na.to_url()}/register_transfer_engine_info"
 

python/sglang/srt/model_executor/pool_configurator.py

@@ -33,7 +33,7 @@ from sglang.srt.environ import envs
 from sglang.srt.mem_cache.allocation_sizing import get_alloc_len_per_decode
 from sglang.srt.mem_cache.deepseek_v4_memory_pool import get_compress_state_ring_size
 from sglang.srt.mem_cache.memory_pool import DSATokenToKVPool
-from sglang.srt.runtime_context import get_model, get_parallel
+from sglang.srt.runtime_context import get_parallel
 from sglang.srt.utils.common import (
     ceil_align,
     ceil_div,
@@ -119,6 +119,7 @@ class DefaultPoolConfigurator(MemoryPoolConfigurator):
     """
 
     def __init__(self, kvc: KVCacheConfigurator):
+        self.kv_cache_dtype_str = kvc.kv_cache_dtype_str
         # Determine effective number of layers for KV cache
         if mambaish := mambaish_config(kvc.model_config):
             effective_layer_ids = [
@@ -304,7 +305,7 @@ class DefaultPoolConfigurator(MemoryPoolConfigurator):
                 )
                 # FP4 prefill uses one shared FP8 dequant workspace across layers.
                 cell_size += n * k * 2 * kv_size
-            elif get_model().kv_cache_dtype == "mxfp8":
+            elif self.kv_cache_dtype_str == "mxfp8":
                 scale_block_size = 32
                 n = model_config.get_num_kv_heads(tp_size)
                 cell_size += (
@@ -339,6 +340,7 @@ class HybridSWAPoolConfigurator(MemoryPoolConfigurator):
     """
 
     def __init__(self, kvc: KVCacheConfigurator):
+        self.kv_cache_dtype_str = kvc.kv_cache_dtype_str
         model_config = kvc.model_config
         kv_cache_dtype = kvc.kv_cache_dtype
         kv_size = torch._utils._element_size(kv_cache_dtype)
@@ -368,7 +370,7 @@ class HybridSWAPoolConfigurator(MemoryPoolConfigurator):
             * kv_size
         )
 
-        if get_model().kv_cache_dtype == "mxfp8":
+        if self.kv_cache_dtype_str == "mxfp8":
             scale_block_size = 32
             self._full_per_token += (
                 model_config.get_num_kv_heads(tp_size)
@@ -501,6 +503,7 @@ class SWAChunkCapPoolConfigurator(HybridSWAPoolConfigurator):
     """
 
     def __init__(self, kvc: KVCacheConfigurator):
+        self.kv_cache_dtype_str = kvc.kv_cache_dtype_str
         super().__init__(kvc)
         assert self._full_layers_num > 0
 
@@ -613,6 +616,7 @@ class DSV4PoolConfigurator(MemoryPoolConfigurator):
     """
 
     def __init__(self, kvc: KVCacheConfigurator):
+        self.kv_cache_dtype_str = kvc.kv_cache_dtype_str
         cfg = kvc.model_config
         self.qk_nope_head_dim = cfg.qk_nope_head_dim
         self.qk_rope_head_dim = cfg.qk_rope_head_dim

python/sglang/srt/model_executor/runner/decode_cuda_graph_runner.py

@@ -91,7 +91,7 @@ from sglang.srt.model_executor.runner_utils.deepep_adapter import (
     DeepEPCudaGraphRunnerAdapter,
 )
 from sglang.srt.multiplex.pdmux_context import get_current_stream_idx, get_stream_groups
-from sglang.srt.runtime_context import get_flags, get_parallel
+from sglang.srt.runtime_context import get_flags, get_parallel, get_spec
 from sglang.srt.speculative.ragged_verify import resolve_ragged_verify_layout
 from sglang.srt.utils import (
     empty_context,
@@ -246,12 +246,12 @@ class DecodeCudaGraphRunner(BaseCudaGraphRunner):
         self.is_dllm = self.dllm_config is not None
         self.attn_backend = attn_backend or model_runner.attn_backend
         self.speculative_num_steps = (
-            model_runner.server_args.speculative_num_steps
+            get_spec().speculative_num_steps
             if speculative_num_steps is None
             else speculative_num_steps
         )
         self.speculative_num_draft_tokens = (
-            model_runner.server_args.speculative_num_draft_tokens
+            get_spec().speculative_num_draft_tokens
             if speculative_num_draft_tokens is None
             else speculative_num_draft_tokens
         )

python/sglang/srt/model_loader/loader.py

@@ -47,7 +47,7 @@ from sglang.srt.model_loader.remote_instance_weight_loader_utils import (
     get_remote_instance_transfer_engine_info_per_rank,
     register_memory_region,
 )
-from sglang.srt.runtime_context import get_server_args
+from sglang.srt.runtime_context import get_exec, get_model, get_server_args
 from sglang.srt.utils import get_available_gpu_memory
 
 # Try to import accelerate (optional dependency)
@@ -495,10 +495,10 @@ class DefaultModelLoader(BaseModelLoader):
             hf_folder = model_name_or_path
 
         server_args = get_server_args()
-        if server_args and server_args.model_checksum is not None:
+        if server_args and get_model().model_checksum is not None:
             from sglang.srt.utils.model_file_verifier import verify
 
-            checksums_source = server_args.model_checksum or model_name_or_path
+            checksums_source = get_model().model_checksum or model_name_or_path
             verify(model_path=hf_folder, checksums_source=checksums_source)
 
         hf_weights_files: List[str] = []
@@ -581,11 +581,11 @@ class DefaultModelLoader(BaseModelLoader):
             )
         elif use_safetensors:
             server_args = get_server_args()
-            weight_loader_disable_mmap = server_args.weight_loader_disable_mmap
+            weight_loader_disable_mmap = get_model().weight_loader_disable_mmap
-            weight_loader_prefetch = server_args.weight_loader_prefetch_checkpoints
+            weight_loader_prefetch = get_model().weight_loader_prefetch_checkpoints
-            prefetch_num_threads = server_args.weight_loader_prefetch_num_threads
+            prefetch_num_threads = get_model().weight_loader_prefetch_num_threads
             weight_loader_drop_cache_after_load = (
-                server_args.weight_loader_drop_cache_after_load
+                get_model().weight_loader_drop_cache_after_load
             )
 
             # Prefetch and multi-threaded loading both read the same shards,
@@ -879,9 +879,8 @@ class LayeredModelLoader(DefaultModelLoader):
         device_config: DeviceConfig,
     ) -> nn.Module:
         from sglang.srt.layers.torchao_utils import apply_torchao_config_to_model
-        from sglang.srt.runtime_context import get_server_args
 
-        torchao_config = get_server_args().torchao_config
+        torchao_config = get_exec().graph.torchao_config
         target_device = torch.device(device_config.device)
         quant_config = _get_quantization_config(model_config, self.load_config)
 
@@ -1751,13 +1750,13 @@ class PreshardedModelLoader(DefaultModelLoader):
             "moe_dense_tp_size": server_args.moe_dense_tp_size,
             "moe_dp_size": server_args.moe_dp_size,
             "enable_dp_lm_head": server_args.enable_dp_lm_head,
-            "enable_fp32_lm_head": server_args.enable_fp32_lm_head,
+            "enable_fp32_lm_head": get_exec().features.enable_fp32_lm_head,
             "quantization": model_config.quantization,
             "model_dtype": str(model_config.dtype),
-            "ep_num_redundant_experts": server_args.ep_num_redundant_experts,
+            "ep_num_redundant_experts": get_exec().moe.ep_num_redundant_experts,
-            "enable_eplb": server_args.enable_eplb,
+            "enable_eplb": get_exec().moe.enable_eplb,
             "init_expert_location": self._normalize_init_expert_location(
-                server_args.init_expert_location
+                get_exec().moe.init_expert_location
             ),
             "structural_signature": self._compute_structural_signature(model_config),
         }
@@ -3934,10 +3933,10 @@ class RunaiModelStreamerLoader(BaseModelLoader):
         )
 
         server_args = get_server_args()
-        if server_args and server_args.model_checksum is not None:
+        if server_args and get_model().model_checksum is not None:
             from sglang.srt.utils.model_file_verifier import verify
 
-            checksums_source = server_args.model_checksum or model_name_or_path
+            checksums_source = get_model().model_checksum or model_name_or_path
             verify(model_path=hf_folder, checksums_source=checksums_source)
 
         hf_weights_files = list_safetensors(path=hf_folder)

python/sglang/srt/models/bailing_moe.py

@@ -78,6 +78,7 @@ from sglang.srt.models.utils import (
     enable_fused_set_kv_buffer,
 )
 from sglang.srt.runtime_context import (
+    get_exec,
     get_forward,
     get_parallel,
     get_server_args,
@@ -209,7 +210,7 @@ class BailingMoESparseMoeBlock(nn.Module):
             self.router_dtype = torch.bfloat16
 
         # TODO global_server_args.ep_num_redundant_experts is used for eplb, not supported now
-        assert get_server_args().ep_num_redundant_experts == 0
+        assert get_exec().moe.ep_num_redundant_experts == 0
         # check group topk
         self.num_expert_group = getattr(config, "n_group", 0)
         self.topk_group = getattr(config, "topk_group", 0)
@@ -223,9 +224,7 @@ class BailingMoESparseMoeBlock(nn.Module):
             self.num_expert_group = self.topk_group = None
             self.use_grouped_topk = False
 
-        self.num_experts = (
+        self.num_experts = config.num_experts + get_exec().moe.ep_num_redundant_experts
-            config.num_experts + get_server_args().ep_num_redundant_experts
-        )
 
         self.gate = BailingMoEGate(
             config=config,

python/sglang/srt/models/bailing_moe_linear.py

@@ -59,6 +59,7 @@ from sglang.srt.model_loader.weight_utils import default_weight_loader
 from sglang.srt.models.deepseek_v2 import DeepseekV2AttentionMLA, DeepseekV2MLP, _is_hip
 from sglang.srt.models.utils import WeightsMapper
 from sglang.srt.runtime_context import (
+    get_device,
     get_forward,
     get_parallel,
     get_server_args,
@@ -529,7 +530,7 @@ class BailingMoELinearAttention(nn.Module):
             base=self.rope_theta,
             rope_scaling=config.rope_scaling,
             is_neox_style=True,
-            device=get_server_args().device,
+            device=get_device().device,
             dtype=torch.float32,
         )
 
@@ -690,7 +691,7 @@ class BailingMoEAttention(nn.Module):
             max_position=self.max_position_embeddings,
             base=self.rope_theta,
             rope_scaling=config.rope_scaling,
-            device=get_server_args().device,
+            device=get_device().device,
         )
         self.attn = RadixAttention(
             self.num_heads,

python/sglang/srt/models/bert.py

@@ -16,7 +16,7 @@ from sglang.srt.layers.radix_attention import AttentionType, RadixAttention
 from sglang.srt.layers.vocab_parallel_embedding import VocabParallelEmbedding
 from sglang.srt.model_executor.forward_batch_info import ForwardBatch
 from sglang.srt.model_loader.weight_utils import default_weight_loader
-from sglang.srt.runtime_context import get_parallel, get_server_args
+from sglang.srt.runtime_context import get_model, get_parallel
 from sglang.srt.utils import add_prefix
 
 BertConfig = None
@@ -365,9 +365,7 @@ class BertModel(nn.Module):
             quant_config=quant_config,
             prefix=add_prefix("encoder", prefix),
         )
-        pooling_type = (
+        pooling_type = PoolingType.CLS if get_model().is_embedding else PoolingType.LAST
-            PoolingType.CLS if get_server_args().is_embedding else PoolingType.LAST
-        )
         self.pooler = (
             BertPooler(config)
             if self.use_bert_pooler

python/sglang/srt/models/deepseek_common/attention_backend_handler.py

@@ -11,7 +11,7 @@ from sglang.srt.models.deepseek_common.attention_forward_methods.forward_methods
     AttnForwardMethod,
 )
 from sglang.srt.models.deepseek_common.utils import _is_hip
-from sglang.srt.runtime_context import get_exec, get_server_args
+from sglang.srt.runtime_context import get_exec
 from sglang.srt.utils import is_sm100_or_sm110_supported, use_intel_amx_backend
 
 MHA_ONE_SHOT_SUPPORTED_BACKENDS = ["fa3", "flashinfer", "flashmla"]
@@ -118,7 +118,7 @@ def handle_attention_flashinfer(attn, forward_batch):
 
 def handle_attention_fa3(attn, forward_batch):
     # when deterministic inference is enabled, use MLA
-    if get_server_args().enable_deterministic_inference:
+    if get_exec().deterministic.enable_deterministic_inference:
         return _dispatch_mla_subtype(attn, forward_batch)
     else:
         return _handle_attention_backend(attn, forward_batch, "fa3")
@@ -194,7 +194,7 @@ def handle_attention_triton(attn, forward_batch):
         return AttnForwardMethod.MLA
 
     # when deterministic inference is enabled, use MLA
-    if get_server_args().enable_deterministic_inference:
+    if get_exec().deterministic.enable_deterministic_inference:
         return _dispatch_mla_subtype(attn, forward_batch)
 
     if (