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[Bugfix] Fix MultiprocessingGPUExecutor.check_health when world_size == 1 #5254

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Merged
simon-mo merged 2 commits into from
Jun 11, 2024
Merged

[Bugfix] Fix MultiprocessingGPUExecutor.check_health when world_size == 1 #5254

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920eba8
fix: check worker_monitor is defined
jsato8094 Jun 4, 2024
84a9178
refactor: set worker_monitor to None when world_size is 1
jsato8094 Jun 5, 2024
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4 changes: 3 additions & 1 deletion vllm/executor/multiproc_gpu_executor.py
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Original file line number Diff line number Diff line change
Expand Up @@ -127,7 +127,9 @@ def _run_workers(

def check_health(self) -> None:
"""Raises an error if engine is unhealthy."""
if not self.worker_monitor.is_alive():
if (worker_monitor :=
getattr(self, "worker_monitor",
None)) is not None and not worker_monitor.is_alive():
raise RuntimeError("Worker processes are not running")

def _wait_for_tasks_completion(self, parallel_worker_tasks: Any) -> None:
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