Three‐dimensional global MHD simulation code for the Earth's magnetosphere using HPF/JA

Abstract

AbstractWe have translated a three‐dimensional magnetohydrodynamic (MHD) simulation code of the Earth's magnetosphere from VPP Fortran to HPF/JA on the Fujitsu VPP5000/56 vector‐parallel supercomputer and the MHD code was fully vectorized and fully parallelized in VPP Fortran. The entire performance and capability of the HPF MHD code could be shown to be almost comparable to that of VPP Fortran. A three‐dimensional global MHD simulation of the Earth's magnetosphere was performed at a speed of over 400 Gflops with an efficiency of 76.5% using 56 processing elements of the Fujitsu VPP5000/56 in vector and parallel computation that permitted comparison with catalog values. We have concluded that fluid and MHD codes that are fully vectorized and fully parallelized in VPP Fortran can be translated with relative ease to HPF/JA, and a code in HPF/JA may be expected to perform comparably to the same code written in VPP Fortran. Copyright © 2002 John Wiley & Sons, Ltd.