Cube GUI User Guide  (CubeGUI 4.6-rc1, revision cfc8481d)
Introduction in Cube GUI and its usage

MPI Communication Efficiency

MPI Communication Efficiency can be evaluated directly by following formula:

MPI Communication Efficiency = max( time outside of MPI ) / max( runtime )

This metric identifies when code is inefficient because it spends a large amount of time communicating rather than performing useful computations.


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