Large-scale Parallel Magnetic Analysis using Hierarchical Domain Decomposition. Tool with Refine Function

摘要

This paper deals with a large-scale 3D magnetostatic analysis using the Hierarchical Domain Decomposition Method (HDDM). To reduce time of generating large- or huge-scale meshes, the Refine tool that generates large- or huge-scale mesh from small- or medium-scale one in various parallel environments is considered. This parallelized Refine tool is embedded in hierarchical domain decomposition tool. As a result, time of generating mesh reduces drastically and huge-scale tetrahedral element mesh with 2 billion elements is successfully made in about 27 minutes with 4,096 cores (256 nodes) on the T2K Open Supercomputer. Furthermore, we confirm that a linear magnetostatic problem with 2.2 billion degrees of freedom is solved in about 4 hours on the T2K Open Supercomputer (256 nodes, 4,096 cores).