🚀 The feature, motivation and pitch

I'm working on analyzing distributed applications based on torch c10d, and the profiling title of the NCCL barrier is confusing.

Currently the NCCL barrier implementation calls an allreduce operation but the profiling title is left to be 'nccl:all_reduce', it would help debugging distributed applications if there would be an hint that this call is a barrier call.

I suggest changing the title to something like 'nccl:all_reduce_barrier'

Alternatives

No response

Additional context

No response

cc @H-Huang @awgu @kwen2501 @wanchaol @fegin @fduwjj @wz337 @wconstab @d4l3k @c-p-i-o