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sglang/python/sglang/test/chunked_prefill_test_utils.py
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Python

from __future__ import annotations
import time
from types import SimpleNamespace
from typing import ClassVar, List, Optional
from sglang.test.run_eval import run_eval
from sglang.test.server_fixtures.disaggregation_fixture import (
PDDisaggregationServerBase,
)
from sglang.test.test_utils import (
DEFAULT_TIMEOUT_FOR_SERVER_LAUNCH,
DEFAULT_URL_FOR_TEST,
CustomTestCase,
popen_launch_server,
terminate_and_kill_process_tree,
try_cached_model,
)
DEFAULT_MODEL: str = "Qwen/Qwen3-0.6B"
DEFAULT_CHUNKED_PREFILL_SIZE: int = 256
DEFAULT_NUM_EXAMPLES: int = 100
DEFAULT_NUM_SHOTS: int = 10
LONG_PROMPT_NUM_SHOTS: int = 24
DEFAULT_NUM_THREADS: int = 128
DEFAULT_MAX_TOKENS: int = 512
DEFAULT_SEED: int = 42
KV_CANARY_ARGS: List[str] = [
"--kv-canary",
"raise",
"--kv-canary-real-data",
"partial",
"--kv-canary-sweep-interval",
"100",
"--disable-piecewise-cuda-graph",
]
class ChunkedGsm8kMixin:
__test__ = False
use_kv_canary: ClassVar[bool] = True
model: ClassVar[str] = DEFAULT_MODEL
feature_args: ClassVar[List[str]] = []
chunked_prefill_size: ClassVar[int] = DEFAULT_CHUNKED_PREFILL_SIZE
num_shots: ClassVar[int] = DEFAULT_NUM_SHOTS
num_examples: ClassVar[int] = DEFAULT_NUM_EXAMPLES
num_threads: ClassVar[int] = DEFAULT_NUM_THREADS
max_tokens: ClassVar[int] = DEFAULT_MAX_TOKENS
gsm8k_threshold: ClassVar[float]
def build_prefill_side_args(self) -> List[str]:
canary = list(KV_CANARY_ARGS) if self.use_kv_canary else []
return (
["--chunked-prefill-size", str(self.chunked_prefill_size)]
+ list(self.feature_args)
+ canary
)
def test_mixed_prefix_gsm8k_chunked(self):
fixture_name = type(self).__name__
args = SimpleNamespace(
base_url=self.base_url,
model=self.model,
eval_name="mixed_prefix_gsm8k",
api="chat_completion",
max_tokens=self.max_tokens,
num_examples=self.num_examples,
num_threads=self.num_threads,
num_shots=self.num_shots,
mixed_prefix_gsm8k_secondary_pool_size=15,
mixed_prefix_gsm8k_seed=DEFAULT_SEED,
gsm8k_data_path=None,
temperature=0.0,
)
tic = time.perf_counter()
metrics = run_eval(args)
metrics["elapsed_sec"] = time.perf_counter() - tic
print(f"[{fixture_name}] {metrics} threshold={self.gsm8k_threshold:.4f}")
score = metrics.get("score")
self.assertIsNotNone(score, "run_eval returned no score")
self.assertGreaterEqual(score, self.gsm8k_threshold)
class ChunkedTestBase(ChunkedGsm8kMixin, CustomTestCase):
__test__ = False
base_url: ClassVar[str] = DEFAULT_URL_FOR_TEST
launch_timeout: ClassVar[int] = DEFAULT_TIMEOUT_FOR_SERVER_LAUNCH
process: ClassVar[Optional[object]] = None
@classmethod
def setUpClass(cls):
cls.process = popen_launch_server(
cls.model,
cls.base_url,
timeout=cls.launch_timeout,
other_args=cls("test_mixed_prefix_gsm8k_chunked").build_prefill_side_args(),
)
@classmethod
def tearDownClass(cls):
if cls.process is not None:
terminate_and_kill_process_tree(cls.process, wait_timeout=60)
class ChunkedTestPDBase(ChunkedGsm8kMixin, PDDisaggregationServerBase):
__test__ = False
decode_feature_args: ClassVar[List[str]] = []
@classmethod
def setUpClass(cls):
cls.extra_prefill_args = cls(
"test_mixed_prefix_gsm8k_chunked"
).build_prefill_side_args()
canary = list(KV_CANARY_ARGS) if cls.use_kv_canary else []
cls.extra_decode_args = canary + list(cls.decode_feature_args)
PDDisaggregationServerBase.setUpClass()
cls.model = try_cached_model(cls.model)
cls.launch_all()
@classmethod
def tearDownClass(cls):
PDDisaggregationServerBase.tearDownClass()