pytorch

84079f31 - [PyTorch] Proper reset execution graph data in remove callback registration (#82910)

[PyTorch] Proper reset execution graph data in remove callback registration (#82910) Summary: This diff fixed issues when execution graph register/unregister is called repeatedly in the training loop. It now properly reset the observer state so that data can be written to new files. Test Plan: ``` buck build mode/dev-nosan caffe2/test:profiler --show-output buck-out/gen/caffe2/test/profiler#binary.par test_profiler.TestExecutionGraph ``` Reviewed By: aaronenyeshi Differential Revision: D37477814 Pull Request resolved: https://github.com/pytorch/pytorch/pull/82910 Approved by: https://github.com/chaekit