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A high-throughput and memory-efficient inference and serving engine for LLMs

Mirrored from https://github.com/tduncan-lum/Nvidia-Optimization-Stack---VLLM.git

Synced Nov 15, 16:00 UTC

[Bugfix] Fix default behavior/fallback for pp in v1 (#16057)

Signed-off-by: mgoin <mgoin64@gmail.com>

Michael Goin committed Apr 4, 2025 at 11:58 UTC 4708f13a9c8758d08cd45df200d63aa97762e873
1 file changed +3 -2
vllm/engine/arg_utils.py
+3 -2
@@ -1521,8 +1521,9 @@ class EngineArgs:
1521 # PP is supported on V1 with Ray distributed executor,
1522 # but off for MP distributed executor for now.
1523 if (self.pipeline_parallel_size > 1
1524 - and self.distributed_executor_backend == "mp"
1525 - and _warn_or_fallback("PP (MP distributed executor)")):
1524 + and self.distributed_executor_backend != "ray"):
1525 + name = "Pipeline Parallelism without Ray distributed executor"
1526 + _raise_or_fallback(feature_name=name, recommend_to_remove=False)
1527 return False
1528
1529 # ngram is supported on V1, but off by default for now.