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[BugFix] Don't start a Ray cluster when not using Ray #5570

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merged 1 commit into from
Jun 15, 2024
Merged

[BugFix] Don't start a Ray cluster when not using Ray #5570

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9 changes: 7 additions & 2 deletions vllm/config.py
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Original file line number Diff line number Diff line change
Expand Up @@ -616,9 +616,14 @@ def __init__(
"required for multi-node inference")
backend = "ray"
elif ray_found:
from ray.util import get_current_placement_group
if self.placement_group or get_current_placement_group():
if self.placement_group:
backend = "ray"
else:
from ray import is_initialized as ray_is_initialized
if ray_is_initialized():
from ray.util import get_current_placement_group
if get_current_placement_group():
backend = "ray"
self.distributed_executor_backend = backend
logger.info("Defaulting to use %s for distributed inference",
backend)
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