PyTorch 1.9.1 Release Notes

• Improvements
• Bug Fixes
• Documentation

Improvements

• Stop warning on .names() access in max_pool2d #60059
• Remove Caffe2 thread-pool leak warning #60318
• Add option to skip GitHub tag validation for torch.hub.load #62139
• Use log.warning in torch.distributed.run to print OMP_NUM_THREADS warning #63953
• TorchElastic: Pretty print the failure message captured by @record #64036
• torch.distribtued.run to set nproc_per_node to 1 by default #61552
• Remove experimental API warning from torch.distributed.elastic.utils.store #60807
• Deprecate use_env in torch.distributed.run #59409
• Better engineering changes for torch.distributed launcher #59152

Bug fixes

Distributed / TorchElastic

• Make init_method=tcp:// compatible with torch.distributed.run #63910
• Fix default parameters (number of restarts, log level, number of processes per node) that regressed with the transition from torch.distributed.launch and torch.distributed.run and clarify the documentation accordingly #61294

Hub

• Fix HTTP/403 error when calling torch.hub.load for TorchVision models #62072

Misc

• torch.mm to check input matrix sizes shapes #61394

Documentation

• Fix broken link in elastic launch doc #62378
• Fix typo in torch.distribtued.run warning message #61127