GPU-Accelerated Large-Scale Simulation of Seismic-Wave Propagation

Taro Okamoto, Hiroshi Takenaka, Takeshi Nakamura, Takayuki Aoki
Department of Earth and Planetary Sciences, Tokyo Institute of Technology
TSUBAME ESJ, No 6, p.5, 2012


   title={GPU-Accelerated Large-Scale Simulation of Seismic-Wave Propagation},

   author={Okamoto, Taro and Takenaka, Hiroshi and Nakamura, Takeshi and Aoki, Takayuki},



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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.
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