Preferring dash over underscore in command-line options. Add `--command-arg-name` to the argument parser. The old arguments with underscores `--command_arg_name` are kept for backward compatibility.
Both dashes and underscores are used in the PyTorch codebase. Some argument parsers only have dashes or only have underscores in arguments. For example, the `torchrun` utility for distributed training only accepts underscore arguments (e.g., `--master_port`). The dashes are more common in other command-line tools. And it looks to be the default choice in the Python standard library:
`argparse.BooleanOptionalAction`: 4a9dff0e5a/Lib/argparse.py (L893-L895)
```python
class BooleanOptionalAction(Action):
def __init__(...):
if option_string.startswith('--'):
option_string = '--no-' + option_string[2:]
_option_strings.append(option_string)
```
It adds `--no-argname`, not `--no_argname`. Also typing `_` need to press the shift or the caps-lock key than `-`.
Pull Request resolved: https://github.com/pytorch/pytorch/pull/94505
Approved by: https://github.com/ezyang, https://github.com/seemethere
Summary:
Adds a standalone script which can be used to test different BLAS libraries. Right now I've deliberately kept it limited (only a couple BLAS libs and only GEMM and GEMV). It's easy enough to expand later.
CC ngimel
Pull Request resolved: https://github.com/pytorch/pytorch/pull/47058
Reviewed By: zhangguanheng66
Differential Revision: D25078946
Pulled By: robieta
fbshipit-source-id: b5f7f7ec289d59c16c5370b7a6636c10a496b3ac
