[Bugfix] Avoid OpenMP thread reallocation in CPU torch compile#37391
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jikunshang merged 1 commit intovllm-project:mainfrom Mar 18, 2026
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[Bugfix] Avoid OpenMP thread reallocation in CPU torch compile#37391jikunshang merged 1 commit intovllm-project:mainfrom
jikunshang merged 1 commit intovllm-project:mainfrom
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This pull request modifies the CPU platform's torch.compile configuration to address an issue with OpenMP thread reallocation that can break thread binding. The change sets the cpp.dynamic_threads option to True in the inductor compile configuration. This makes the number of threads a dynamic argument to the compiled kernels, rather than a hardcoded value. The change is confined to the CPU platform configuration and appears to correctly solve the described problem.
jikunshang
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Mar 18, 2026
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Signed-off-by: jiang1.li <jiang1.li@intel.com> (cherry picked from commit 2618012)
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…project#37391) Signed-off-by: jiang1.li <jiang1.li@intel.com> (cherry picked from commit 2618012)
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…project#37391) Signed-off-by: jiang1.li <jiang1.li@intel.com> Signed-off-by: Monishver Chandrasekaran <monishverchandrasekaran@gmail.com>
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Purpose
CPU torch compile will generate code with
num_threads()by default, which causes OpenMP thread reallocation and breaks thread binding. This PR disabled it.Test Plan
CI tests
Test Result
Essential Elements of an Effective PR Description Checklist
supported_models.mdandexamplesfor a new model.