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[core] Turn off GPU communication overlap for Ray executor #12051

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Jan 15, 2025
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[core] Turn off GPU communication overlap for Ray executor #12051

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[core] Turn off GPU communication overlap for Ray executor
ruisearch42 Jan 14, 2025
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ruisearch42 Jan 14, 2025
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8 changes: 4 additions & 4 deletions vllm/envs.py
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Original file line number Diff line number Diff line change
Expand Up @@ -45,7 +45,7 @@
VLLM_USE_RAY_SPMD_WORKER: bool = False
VLLM_USE_RAY_COMPILED_DAG: bool = False
VLLM_USE_RAY_COMPILED_DAG_NCCL_CHANNEL: bool = True
VLLM_USE_RAY_COMPILED_DAG_OVERLAP_COMM: bool = True
VLLM_USE_RAY_COMPILED_DAG_OVERLAP_COMM: bool = False
VLLM_WORKER_MULTIPROC_METHOD: str = "fork"
VLLM_ASSETS_CACHE: str = os.path.join(VLLM_CACHE_ROOT, "assets")
VLLM_IMAGE_FETCH_TIMEOUT: int = 5
Expand Down Expand Up @@ -340,11 +340,11 @@ def get_default_config_root():
lambda: bool(int(os.getenv("VLLM_USE_RAY_COMPILED_DAG_NCCL_CHANNEL", "1"))
),

# If the env var is set, it enables GPU communication overlap in
# Ray's compiled DAG. This flag is ignored if
# If the env var is set, it enables GPU communication overlap
# (experimental feature) in Ray's compiled DAG. This flag is ignored if
# VLLM_USE_RAY_COMPILED_DAG is not set.
"VLLM_USE_RAY_COMPILED_DAG_OVERLAP_COMM":
lambda: bool(int(os.getenv("VLLM_USE_RAY_COMPILED_DAG_OVERLAP_COMM", "1"))
lambda: bool(int(os.getenv("VLLM_USE_RAY_COMPILED_DAG_OVERLAP_COMM", "0"))
),

# Use dedicated multiprocess context for workers.
Expand Down
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