pytorch

fe0810e2 - Add a section to introduce GradBucket class in ddp_comm_hooks.rst (#53253)

Add a section to introduce GradBucket class in ddp_comm_hooks.rst (#53253) Summary: Pull Request resolved: https://github.com/pytorch/pytorch/pull/53253 Since GradBucket class becomes public, mention this class in ddp_comm_hooks.rst. Screenshot: {F478201008} ghstack-source-id: 123596842 Test Plan: viewed generated html file Reviewed By: rohan-varma Differential Revision: D26812210 fbshipit-source-id: 65b70a45096b39f7d41a195e65b365b722645000