GPU-accelerated Tsunami Run-up Simulation at Toyama-bay

Abstract

High speed Tsunami run-up simulation is achieved by using General Purpose Graphical Processing Unit(GPGPU) at Toyama-bay coastal region. The simulation includes 5[m] grid size geometry data and 3,341,250 (2,475×1,350) grid points are used. The simulation is calculated on the Graphics Processing Unit (GPU) named TESLA K20 (NVIDIA) in about 90.6 seconds and it is more than about 78 times as faster as the CPU calculation. The simulation realizes both the high resolutional calculation (5 [m] intervals) and the high performance calculation.