Ensure NCCL error handling code is disabled for NCCL versions < 2.4 (#27124)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/27124
ncclCommAbort() and ncclGetAsyncError() were two APIs added in NCCL
2.4 to detect errors in NCCL communicators. These were used as part of
ProcesGroupNCCL and we also enforced that only NCCL versions 2.4+ were
supported. Although, there is still legitimate use for older NCCL versions and
hence we should still support those.
For that purpose, in this change I've ensured we disable NCCL error checking
for versions < 2.4.
ghstack-source-id: 91452959
Test Plan:
1) Test with 2.4.8
2) Test with 2.2.13
3) unit tests.
Differential Revision: D17178988
fbshipit-source-id: 5dc44b5f7b4b00466c67fd452315f1d4f5c47698
