pytorch

2eaf71d7 - [Model Averaging] Update model averager API to avoid the redundant `params` arg needed by post-localSGD optimizer (#62132)

[Model Averaging] Update model averager API to avoid the redundant `params` arg needed by post-localSGD optimizer (#62132) Summary: Pull Request resolved: https://github.com/pytorch/pytorch/pull/62132 as title Proposal: https://github.com/pytorch/pytorch/issues/59699 ghstack-source-id: 134560541 Test Plan: buck test mode/dev-nosan caffe2/test/distributed:distributed_nccl_fork -- test_post_localSGD_optimizer_parity buck test mode/dev-nosan caffe2/test/distributed:distributed_nccl_fork -- test_periodic_model_averager Reviewed By: rohan-varma Differential Revision: D29887751 fbshipit-source-id: 60dadb04790d800fdcc7cb8a08d060e411718739