[DI] Allow explicit taskLauncher for torchscript interpreter (#46865)
Summary:
By default, TorchScript execution is single threaded and uses the caller's thread pool. For the use case of distributed inference, we hope there is a way to customize the behavior where the interpreter in torch script can be executed in other places. This diff allows an explicit taskLauncher for torchscript interpreter.
Pull Request resolved: https://github.com/pytorch/pytorch/pull/46865
Test Plan:
unit test is passed.
fbshipit-source-id: 1d7b003926c0d1f8facc53206efb960cff8897ac
Fixes #{issue number}
Reviewed By: houseroad
Differential Revision: D24616102
Pulled By: garroud
fbshipit-source-id: 79202b62f92d0b0baf72e4bf7aa3f05e0da91d59
