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[CI/Build][Bugfix] Fix CPU backend default threads num #13077

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Merged
khluu merged 1 commit into from
Feb 11, 2025
Merged

[CI/Build][Bugfix] Fix CPU backend default threads num #13077

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3 changes: 3 additions & 0 deletions vllm/platforms/cpu.py
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Original file line number Diff line number Diff line change
Expand Up @@ -115,6 +115,9 @@ def check_and_update_config(cls, vllm_config: VllmConfig) -> None:
# Environment variables for CPU executor
#

# Set default threads num for OpenMP parallel
os.environ["OMP_NUM_THREADS"] = str(torch.get_num_threads())

# Disable torch async compiling which won't work with daemonic processes
os.environ["TORCHINDUCTOR_COMPILE_THREADS"] = "1"

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