Partnership for Advanced Computing in Europe (PRACE)
Parsek2D-MLMD is a semi-implicit Multi Level Multi Domain Particle-in-Cell (PIC) code for the simulation of astrophysical and space plasmas. In this Whitepaper, we report on improvements on Parsek2D-MLMD carried out in the course of the PRACE preparatory access project 2010PA1802. Through algorithmic enhancements – in particular the implementation of smoothing and temporal sub-stepping – as well as through performance tuning using HPCToolkit, the efficiency of the code has been improved significantly. For representative benchmark cases, we consistently achieved a total speedup of a factor 10 and higher.