fix flaky test (#26395)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/26395
This diff makes each SummaryWriter write into its own unique directory.
Reviewed By: orionr
Differential Revision: D17441500
fbshipit-source-id: d284fcf0e7e7a7214e644349e345f1de0e1a1aba
Author
Alexander Melnikov
