What can the following be due to / how to debug it? it happens when closing my MPI application
[1612979755.727913] [compute-0-9:21112:0] tag_match.c:61 UCX WARN unexpected tag-receive descriptor 0x2b2bf64cdbc0 was not matched
UCX warn unexpected tag-receive
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1 Answers
Assuming the application exited normally, this probably means that some process sent a message (e.g. calling MPI_Send) to a destination process that did not post a matching receive before calling MPI_Finalize. See https://github.com/openucx/ucx/issues/6331#issuecomment-778428537
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