pytorch

ea93bdc2 - Add comment explaining purpose of the accumulate_grad argument (#47266)

Add comment explaining purpose of the accumulate_grad argument (#47266) Summary: Addressing a comment from a PR that has already been merged https://github.com/pytorch/pytorch/issues/46855 https://github.com/pytorch/pytorch/pull/46855#discussion_r515161953 Pull Request resolved: https://github.com/pytorch/pytorch/pull/47266 Reviewed By: agolynski Differential Revision: D24709017 Pulled By: soulitzer fbshipit-source-id: 3c104c2fef90ffd75951ecef4ae9e938d4b12d8c