Add TorchBind-based Python and TorchScript binding for ProcessGroup (#47907)
Summary:
Add TorchBind-binding for ProcessGroup class.
Currently there are a few limitation of TorchBind that prevents us from fully matching existing PyBind-binding of ProcessGroup:
- TorchBind doesn't support method overloading. Current PyBind binding uses overloading extensively to provide flexible API, but TorchBind (and TorchScript ClassType behind it) doesn't yet support it. Therefore, we can provide at most one version of API under each name.
- TorchBind doesn't support C++ enums yet. This prevents us from making real uses of XXXOptions, which is widely used in many APIs.
Pull Request resolved: https://github.com/pytorch/pytorch/pull/47907
Reviewed By: wanchaol
Differential Revision: D24945814
Pulled By: gmagogsfm
fbshipit-source-id: e103d448849ea838c10414068c3e4795db91ab1c
