[DDP Communication Hook] Rename 4 Methods of GradBucket Class (#62510)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/62510
`GradBucket` is an important class defined in both C++ and Python, used for PyTorch Distributed Training. We need to rename the following methods for simplicity:
1) get_index -> index
2) is_the_last_bucket_to_allreduce -> is_last,
3) get_per_parameter_tensors -> gradients,
4) get_model_params_for_bucket -> parameters.
Test Plan:
Local run comprehensive test with following results:
https://pxl.cl/1Ml8b
For two timeout failure test cases, most likely environment related and fail in my devserver.
Reviewed By: SciPioneer
Differential Revision: D30024161
fbshipit-source-id: 07e6072a2f7b81f731425d9b71f8c8b60d383b0f
