Comment about CuDNNWrapper (#15496)
Summary:
Signed-off-by: Edward Z. Yang <ezyang@fb.com>
Pull Request resolved: https://github.com/pytorch/pytorch/pull/15496
Differential Revision: D13544130
Pulled By: ezyang
fbshipit-source-id: 51bdd8312b482925b30a478774cdfa629c57ee4e
