Question: As discussed in Section 4 . 6 , MPI offers a number of variants of send including the MPI _ Rsend operation, which assumes the

As discussed in Section 4.6, MPI offers a number of variants of send including the
MPI_Rsend operation, which assumes the receiver is ready to receive at the time of
sending. What optimizations in implementation are possible if this assumption is correct
and what are the repercussions of this assumption being false?

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