Q) Why do I get this error:
GetQueuedCompletenessStatus failed, The specified network
name is no longer available.
A) Error 64 is the generic ``connection aborted'' message for I/O completion ports and is usually the result of another error.
If there is another error in the output, it is probably the real cause of the error.
A common cause of error 64 all by itself is when one process exits while data is still being transmitted. Make sure all your MPI_Isend's and MPI_Irecv's are matched with corresponding MPI_Wait calls. If all your communication is matched up, make sure a process isn't crashing or exiting prematurely.