pytorch

5a00152a - Warn about poor performance creating Tensor from list of numpy.array's (#51680)

Warn about poor performance creating Tensor from list of numpy.array's (#51680) Summary: Fixes https://github.com/pytorch/pytorch/issues/13918 Pull Request resolved: https://github.com/pytorch/pytorch/pull/51680 Reviewed By: saketh-are Differential Revision: D29847229 Pulled By: ezyang fbshipit-source-id: 0519aad27f9ca1d8c06be5b9e6de382374d8b72b