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[torch.compile] Use custom ops when use_inductor=False (#19618)

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Woosuk Kwon 2025-06-13 15:05:54 -07:00 committed by GitHub
parent 0f0874515a
commit aafbbd981f
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1 changed files with 15 additions and 3 deletions
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18
vllm/config.py
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@ -4450,15 +4450,27 @@ class VllmConfig:
self.compilation_config.custom_ops.append("+rms_norm")
if envs.VLLM_USE_V1 and self.model_config is not None and \
not self.model_config.enforce_eager:
# FIXME(rob): Add function to set all of these.
if not self.compilation_config.custom_ops:
self.compilation_config.custom_ops = ["none"]
# By default, V1 uses piecewise CUDA graphs. If full_cuda_graph
# is set to True, full CUDA graphs will be used.
self.compilation_config.cudagraph_num_of_warmups = 1
self.compilation_config.pass_config.enable_fusion = False
self.compilation_config.pass_config.enable_noop = False
self.compilation_config.level = CompilationLevel.PIECEWISE
self.compilation_config.set_splitting_ops_for_v1()
# The behavior of custom ops with inductor depends on the config:
# - If use_inductor=True and custom_ops is empty:
# Inductor generates Triton kernels for all registered custom ops
# (default behavior)
# - If use_inductor=True and custom_ops is non-empty:
# Custom CUDA kernels are used for specified ops while inductor
# generates Triton kernels for remaining ops, including misc torch
# ops in the model.
if (not self.compilation_config.custom_ops
and self.compilation_config.use_inductor):
# Let inductor generate Triton kernels for the custom ops.
self.compilation_config.custom_ops = ["none"]
self._set_cudagraph_sizes()
if self.cache_config.cpu_offload_gb > 0 and \