pytorch

45bd0f61 - Back out "Revert D30745960: [DDP] Remove SPMD from self.modules_buffers" (#64778)

Back out "Revert D30745960: [DDP] Remove SPMD from self.modules_buffers" (#64778) Summary: Pull Request resolved: https://github.com/pytorch/pytorch/pull/64778 Original commit changeset: d3f3fb813c45 ghstack-source-id: 138326910 Test Plan: ci Reviewed By: H-Huang Differential Revision: D30849443 fbshipit-source-id: 15dab8a959a29d2e2fefac6ad52b8d8168eacc02