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[Minor] Fix false warning when TP=1 #2674

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Merged
merged 1 commit into from
Jan 30, 2024
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[Minor] Fix false warning when TP=1 #2674

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4 changes: 4 additions & 0 deletions vllm/model_executor/parallel_utils/custom_all_reduce.py
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Original file line number Diff line number Diff line change
Expand Up @@ -29,6 +29,10 @@ def init_custom_ar() -> None:
return
rank = get_tensor_model_parallel_rank()
world_size = get_tensor_model_parallel_world_size()
if world_size == 1:
# No need to initialize custom allreduce for single GPU case.
return

if world_size not in _SUPPORTED_WORLD_SIZES:
logger.warn(
"Custom allreduce is disabled due to an unsupported world size: "
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