[XPU] do not use null stream when CDNN_CLUSTER_PARALLEL is ON #67276
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HarperCy
approved these changes
Aug 14, 2024
houj04
approved these changes
Aug 14, 2024
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PR Category
Custom Device
PR Types
Bug fixes
Description
框架中的
dev_ctx.Alloc调用使用默认流(null)的allocator，然而，XPU开启CDNN cluster并行之后，实际使用的是新创建的stream，而非null stream。这会导致框架的dev_ctx.Alloc和重载的XHPC中的alloc使用不同的显存池，如下图所示。由于CDNN_CLUSTER并行开启后，null stream实际上并未使用，所以该问题不会影响精度。