Parallel Performance of the Multi-threaded ICCG Solver in Electromagnetic Finite Element Analyses on the Latest Processors

摘要

The performance of multithreaded incomplete Cholesky conjugate gradient solvers in finite element electromagnetic field analysis is analyzed. We compare the parallel performance of the additive Schwarztype incomplete Cholesky preconditioned conjugate gradient (AS-ICCG) solver and the parallelized incomplete Cholesky conjugate gradient solver using algebraic block multicolor ordering (ABMC-ICCG) on the latest processors. A numerical test of the interior-permanent-magnet motor model analysis shows that the ABMC-ICCG solver has faster computation speed than the AS-ICCG solver in 16-core executions on an Intel~® Xeon~® E5 processor, and attains a 7.6-fold speedup relative to the sequential solver. Moreover, we analyze performance on an Intel~® Xeon Phi™coprocessor and attain a 35-fold speedup relative to the sequential solver on the same coprocessor using the ABMC-ICCG solver.