[Gradient Compression] Introduce fp16_compress_wrapper in ddp_comm_hooks.rst (#54052)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/54052
Introduce `fp16_compress_wrapper`, which can give some speedup on top of some gradient compression algorithms like PowerSGD.
ghstack-source-id: 124001805
Test Plan: {F509205173}
Reviewed By: iseessel
Differential Revision: D27076064
fbshipit-source-id: 4845a14854cafe2112c0caefc1e2532efe9d3ed8
