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[xpupti] Collect peer-to-peer memory copies - #1576
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PTI reports a copy between two devices only through PTI_VIEW_DEVICE_GPU_MEM_COPY_P2P, a view xpupti never enabled, so such copies were missing from the trace altogether. Enable it along with the ordinary copy view for GPU_MEMCPY and log its records as gpu_memcpy on the source device, with the fromDevice/toDevice metadata that CUDA peer-to-peer copies carry. Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
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@pytorchbot label "ciflow/xpu" |
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Moved to pytorch/pytorch#198861 |
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PTI reports a copy between two devices only through
PTI_VIEW_DEVICE_GPU_MEM_COPY_P2P, a view xpupti never enabled, so such
copies were missing from the trace altogether. Enable it along with the
ordinary copy view for GPU_MEMCPY and log its records as gpu_memcpy on
the source device, with the fromDevice/toDevice metadata that CUDA
peer-to-peer copies carry.
Co-Authored-By: Claude Opus 5.5 (1M context) noreply@anthropic.com