Add FP4 Indexer for DeepSeek V4 on SM120 (#27059)

test/registered/kernels/benchmark/attention/bench_dsv4_fp4_indexer.py

@@ -7,11 +7,14 @@ import triton
 
 from sglang.benchmark.bench_utils import run_bench
 from sglang.kernels.jit.benchmark.utils import get_benchmark_range
-from sglang.srt.utils import is_sm100_supported
+from sglang.srt.utils import is_sm100_supported, is_sm120_supported
 from sglang.test.ci.ci_register import register_cuda_ci
 
 register_cuda_ci(
-    est_time=5, stage="base-b-kernel-benchmark", runner_config="1-gpu-large"
+    est_time=5,
+    stage="base-b-kernel-benchmark",
+    runner_config="1-gpu-large",
+    disabled="Temporarily disabled until DeepGEMM is ready",
 )
 
 try:
@@ -167,8 +170,8 @@ def benchmark(batch: int, seq_len_kv: int, provider: str):
 
 
 if __name__ == "__main__":
-    if not is_sm100_supported():
-        print("[skip] DeepSeek V4 FP4 indexer benchmark requires SM100 CUDA.")
+    if not (is_sm100_supported() or is_sm120_supported()):
+        print("[skip] DeepSeek V4 FP4 indexer benchmark requires SM100 or SM120 CUDA.")
         sys.exit(0)
     if deep_gemm is None or per_token_cast_to_fp4 is None:
         print("[skip] DeepGEMM is unavailable.")