Expire traced tensors #1600
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Expire traced tensors #1600
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Changes
Traced tensors will now be marked as "expired" upon leaving the
TracingContextthey were created in, and expired traced tensors will have theirTensorMetadata discarded next time they end up in (possibly another)TracingContext.Reason for changes
YOLOv8 from ultralytics caches anchors during a forward call, which leads to a
TracedTensorfrom one dummy forward persist into the other dummy forward tracing call, withTensorMetadata which is no longer valid.Related tickets
104305
Tests
tests.torch.test_tracing_context.test_traced_tensors_are_expired_on_context_exit
tests.torch.test_tracing_context.test_no_cross_forward_run_dependency