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Suppress benign cuBLAS warning when capturing cudagraphs with DBO #25596

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Merged
tlrmchlsmth merged 1 commit into from
Sep 24, 2025
Merged

Suppress benign cuBLAS warning when capturing cudagraphs with DBO #25596

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2 changes: 2 additions & 0 deletions vllm/v1/worker/gpu_ubatch_wrapper.py
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Original file line number Diff line number Diff line change
Expand Up @@ -104,6 +104,7 @@ def __init__(self, runnable: Callable, vllm_config: VllmConfig,
self.graph_pool = current_platform.get_global_graph_pool()

self.sm_control = self._create_sm_control_context(vllm_config)
self.device = device

@staticmethod
def _create_sm_control_context(vllm_config: VllmConfig):
Expand Down Expand Up @@ -168,6 +169,7 @@ def _capture_ubatches(self, ubatch_metadata, model) -> torch.Tensor:

@torch.inference_mode()
def _capture_ubatch_thread(results, ubatch_metadata):
torch.cuda.set_device(self.device)
ubatch_context = ubatch_metadata.context
with torch.cuda.stream(ubatch_context.compute_stream):
_ = torch.cuda.current_blas_handle()
Expand Down