pytorch

aac424a6 - Revert D15577342: [pytorch][PR] Fix Python DataParallel RNN in no_grad mode

Revert D15577342: [pytorch][PR] Fix Python DataParallel RNN in no_grad mode Differential Revision: D15577342 Original commit changeset: 1a024c572171 fbshipit-source-id: 9a3ddc14ebb2d75d9dc3ee1fe69df9ffba3529de