Add a warning about DataLoader num_workers > 0 "memory leak" (#64337)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/64337
See https://github.com/pytorch/pytorch/issues/13246
Signed-off-by: Edward Z. Yang <ezyang@fb.com>
Test Plan: Imported from OSS
Reviewed By: H-Huang
Differential Revision: D30690320
Pulled By: ezyang
fbshipit-source-id: 2751aca05a94e63d25162599f458855988516fad
