pytorch

160db3db - Adding profiling capability to c++ ddp collective functions (#46471)

Adding profiling capability to c++ ddp collective functions (#46471) Summary: Pull Request resolved: https://github.com/pytorch/pytorch/pull/46471 ghstack-source-id: 116018837 Test Plan: Added unit tests: buck test mode/dev-nosan caffe2/test/distributed:distributed_gloo_fork buck test mode/dev-nosan caffe2/test/distributed:distributed_nccl_fork Reviewed By: rohan-varma Differential Revision: D23948397 fbshipit-source-id: 6d93a370aff26bf96c39e5d78a2492c5142a9156