Parallel Finite Element Analysis of 100 Million DOFs Based on the Hierarchical Domain Decomposition Method

Abstract

This paper describes the parallel finite elements for ultra large scale analysis for a elasticity problem using massively parallel computers. In order to solve the issue of memory shortage and computational time, the developed system employs an estimated static load balancing technique and hierarchical distributed data management. The present system is successfully applied to large FEM analyses of over 100 million d.o.f. (degrees of freedom) with high parallel performance over 80% on a massively parallel computer consisting of 1,024 processing units.