Abstract
GeoFEM is solid earth simulator software, which is under development to be used by super parallel computer, “Earth Simulator” (GS40). The GeoFEM system is currently open to the public as a parallel FEM analysis code. Large-scaled static linear problem up to 100M (100,000,000) degrees of freedom was already analyzed and it shows high performance computing ability by parallel processing. This paper describes a performance validation of the GeoFEM to get a guideline of optimization for the Earth Simulator. As the result, the GeoFEM shows high parallel performance on distributed memory type parallel computer with scalar processor, but the single PE speed is relatively slow. It is assumed that the parallel performance does not drop so much, when we try to speed-up the GeoFEM code by vector tuning or optimization to improve the single node performance
