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

Amdahl's Efficiency

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

Amdahl's Efficiency = ( max( runtime ) - avg( idling time of OpenMP threads ) ) / max( runtime )

where average idling time of OpenMP threads considers that threads are idling if only master thread is working and can be computed as sum over all processes( serial computation * ( number of threads per process - 1 ) ) / number of all available threads


Cube Writer Library    Copyright © 1998–2021 Forschungszentrum Jülich GmbH, Jülich Supercomputing Centre
Copyright © 2009–2015 German Research School for Simulation Sciences GmbH, Laboratory for Parallel Programming