A MONTE CARLO ANALYSIS METHOD OF CRUSTAL DEFORMATION COMPUTATION ON GPU CLUSTERS

Abstract

 Crustal deformation could be a significant disaster factor. To make the efficient counter plan, we need to simulate co-seismic crustal deformation and estimate damages. In the simulation, it is desirable to use crustal deformation observation data and crustal structure data at high resolution. In addition, uncertainties of inputs should be considered. In this study, we developed the analysis method of crustal deformation quantitatively considering uncertainties by MC (Monte Carlo) method. To handle massive computation cost, we developed the fast numerical simulation method of crustal deformation based on the finite element method with GPU (Graphics Processing Units) computation. We reconstructed the algorithm so that calculation in the analyses was suitable for GPU computation. By introduction of GPUs, computation time was significantly decreased and we enabled to perform simulations many times in a realistic time.