high performance computing on graphics processing units: hgpu.org

Simulating seismic wave propagation is important for the study of earthquake sources, the generation of strong ground motions and the excitation of large tsunamis. We describe methods for accelerating large-scale finite-difference time-domain simulation of the seismic wave propagation by the use of graphics processing units (GPUs). We then present examples of the wave-filed from the 2011 Tohoku-Oki earthquake simulated by using the GPUs of TSUBAME supercomputer. The simulated wave-field exhibits strongly complex pattern reflecting the source complexity and the heterogeneities around the source region.