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[Stability fix] turn off HMA allocator when connector is set #27592

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Merged
merged 6 commits into from
Oct 28, 2025
Merged

[Stability fix] turn off HMA allocator when connector is set #27592

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d65eca0
turn off HMA connector when connector is set
KuntaiDu Oct 27, 2025
16a2bb5
Merge branch 'main' into kuntai-disable-HMA-for-connector-for-now
KuntaiDu Oct 27, 2025
bb82eb6
add logger warning
KuntaiDu Oct 27, 2025
b7b6f3e
Merge branch 'kuntai-disable-HMA-for-connector-for-now' of https://gi…
KuntaiDu Oct 27, 2025
c21bb17
adjust logger warning to make it more informative
KuntaiDu Oct 27, 2025
d00bb77
Merge branch 'main' into kuntai-disable-HMA-for-connector-for-now
KuntaiDu Oct 27, 2025
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5 changes: 5 additions & 0 deletions vllm/config/vllm.py
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Original file line number Diff line number Diff line change
Expand Up @@ -568,6 +568,11 @@ def __post_init__(self):
if not current_platform.support_hybrid_kv_cache():
# Hybrid KV cache manager is not supported on non-GPU platforms.
self.scheduler_config.disable_hybrid_kv_cache_manager = True
if self.kv_transfer_config is not None:
# NOTE(Kuntai): turn HMA off for connector for now.
# TODO(Kuntai): have a more elegent solution to selectively
# turn off HMA for connector.
self.scheduler_config.disable_hybrid_kv_cache_manager = True
if self.kv_transfer_config is not None:
# Hybrid KV cache manager is not compatible with KV transfer.
self.scheduler_config.disable_hybrid_kv_cache_manager = True
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