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

Parallel Efficiency

Parallel Efficiency (PE) reveals the inefficiency in processes and threads utilization. These are measured with Amdahl's Efficiency and MPI Efficiency and OpenMP Efficiency, and PE can be computed as a product of these three sub-metrics:

PE = Amdahl's Efficiency * MPI Efficiency * OpenMP Efficiency

Amdahl's Efficiency indicates if application is bound by serial part of application, MPI Efficiency indicates inefficiencies cased by communication, and OpenMP Efficiency indicates inefficient utilization of OpenMP threads.


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