FAQ: Add note about recovering from OOM (#35214)
Summary:
Closes https://github.com/pytorch/pytorch/issues/18853
This documents the workaround needed to solve the issues in https://github.com/pytorch/pytorch/issues/18853
Pull Request resolved: https://github.com/pytorch/pytorch/pull/35214
Differential Revision: D20604877
Pulled By: ezyang
fbshipit-source-id: 71ed13cfa567d8e88fa9f18180a171cd174fb528
