pytorch

023948e6 - [caffe2] update load_save_test.py to also verify the chunking behavior (#53401)

[caffe2] update load_save_test.py to also verify the chunking behavior (#53401) Summary: Pull Request resolved: https://github.com/pytorch/pytorch/pull/53401 This is a reland of D26641599 (https://github.com/pytorch/pytorch/commit/cd9ac54ea75d4a530b6b9dccaaf1167cabafc789) after rebasing onto D26802576 (https://github.com/pytorch/pytorch/commit/f595ba1bae9a75c6403e4624e7294b5635acd40c). Add some small utility functions to read the blob names back from the minidb file so that we can verify how many chunks were written for each blob. ghstack-source-id: 123567033 Test Plan: buck test caffe2/caffe2/python/operator_test:load_save_test Reviewed By: mraway Differential Revision: D26853942 fbshipit-source-id: 0b45078fdd279f547752c8fdb771e296374a00da