using c10::intrusive_ptr<c10d::ProcessGroup> as argument from python #13
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the problem
related to #11
Why
c10d::ProcessGroup as a c10::intrusive_ptr_target can be copied or moved, but with refcount to 0, which causes c10d::ProcessGroup release_resources after the first call.
Fix
using c10::intrusive_ptrc10d::ProcessGroup as argument instead.