Cube GUI User Guide  (CubeGUI 4.8.2, revision 7895e762)
Introduction in Cube GUI and its usage

OpenMP Amdahl's Efficiency

OpenMP Amdahl's Efficiency indicates serial computation and can be computed as follows:

\begin{eqnarray*}Amdahl's\; Efficiency=\frac{parallel\; execution\; time}{total\; runtime} \end{eqnarray*}

where parallel execution time is a time spent in OpenMP parallel regions. Amdahl's Efficiency computed per MPI rank, significant difference between MAX and MIN values indicate that some process have bigger serialisation part than others.


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