PERFORMANCE ENHANCEMENT OF FEM CODE FOR SOILS AND FOUNDATIONS WITH THREAD PARALLELIZATION

Abstract

FEM program for soils and foundations was parallelized with OpenMP to speed up the analysis. The investigation showed that solving linear equation and calculation of unbalance force were the hot spots of the analysis. By parallelizing these hot spots, the analysis was speeded up by 6.3 times using 8 cores at maximum. It was also found that the computation time of 8 parallel threads was shortened 5.0-5.2 times by the combination of the sparse matrix solvers and the nonlinear algorithms.