Implement Discontinuous Galerkin Method with MPI on Multiple GPUs System

Dawei Mu¹, Po Chen¹, and Liqiang Wang^2
1Department of Geology and Geophysics, University of Wyoming
²Department of Computer Sciences, University of Wyoming

We have successfully ported discontinuous Galerkin (ADER-DG) method for solving the three-dimensional elastic seismic wave equation on unstructured tetrahedral meshes with NVidia Tesla GPUs using the NVidia CUDA programming model. On average our implementation obtained a speedup factor of about 24.3 for the single-precision version of our single GPU code and about 28.2 for the single- precision version of our multiple GPU code. The implementation of this Discontinuous Galerkin method on GPU system has greatly enhanced its competition among many numerical forward solutions.

AAPG Search and Discovery Article #90182©2013 AAPG/SEG Student Expo, Houston, Texas, September 16-17, 2013