Retry Fix Python DataParallel RNN in no_grad mode (#21262)
Summary:
Retry #21197
The previous one failed because it uses some Python3 only syntax.
ezyang Do we still have multi-GPU py2 tests? I am curious why the CI tests did not catch this error.
Pull Request resolved: https://github.com/pytorch/pytorch/pull/21262
Differential Revision: D15598941
Pulled By: mrshenli
fbshipit-source-id: 95f416589448c443685d6d236d205b011998a715
