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[Platform] Add import_kernels interface #3694

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Merged
merged 4 commits into from
Nov 14, 2025
Merged

[Platform] Add import_kernels interface #3694

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[Platform] Add import_kernels interface
gcanlin Oct 24, 2025
c556df3
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gcanlin Oct 24, 2025
61a0019
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gcanlin Nov 13, 2025
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gcanlin Nov 13, 2025
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11 changes: 11 additions & 0 deletions vllm_ascend/platform.py
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Original file line number Diff line number Diff line change
Expand Up @@ -416,6 +416,17 @@ def check_and_update_config(cls, vllm_config: VllmConfig) -> None:
"needs to be equal if use cp or dcp > 1 in P/D disaggregate scenario."
)

@classmethod
def import_kernels(cls) -> None:
# Directly importing vllm_ascend_C prevents ASCEND_RT_VISIBLE_DEVICES
# from being applied during runtime initialization, which causes bugs
# in the RL module. Therefore, we currently use lazy initialization
# to avoid this issue. See https://github.com/vllm-project/vllm-ascend/pull/884.
# TODO: when the above issue is fixed, we can uncomment the following lines.
# from vllm_ascend.utils import enable_custom_op
# enable_custom_op()
pass

@classmethod
def get_attn_backend_cls(
cls,
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