Revert "Fixes selection of cuDNN algorithm (#15881)" (#16484)
Summary:
There is a regression in cudnnGet*_v7 that causes slowdown in resnet50 training. I am opening a bug with cuDNN team about this. This reverts commit 38374468832e307ca741901870914857a836dd5d.
ezyang :crying_cat_face:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/16484
Differential Revision: D13924755
Pulled By: soumith
fbshipit-source-id: 8c719345fc443f1289539bfae630eea9224ba4a5
