Fast Seismic Modeling and Reverse Time Migration on a GPU Cluster

Rached Abdelkhalek 1, 2, 3, * Henri Calendra 3 Olivier Coulaud 1, 2 Guillaume Latu 4 Jean Roman 1, 2
* Corresponding author
2 HiePACS - High-End Parallel Algorithms for Challenging Numerical Simulations
LaBRI - Laboratoire Bordelais de Recherche en Informatique, Inria Bordeaux - Sud-Ouest
4 CALVI - Scientific computation and visualization
IRMA - Institut de Recherche Mathématique Avancée, LSIIT - Laboratoire des Sciences de l'Image, de l'Informatique et de la Télédétection, Inria Nancy - Grand Est, IECL - Institut Élie Cartan de Lorraine
Abstract : We have designed a fast parallel simulator that solves the acoustic wave equation on a GPU cluster. Solving the acoustic wave equation in an oil exploration industrial context aims at speeding up seismic modeling and Reverse Time Migration. We consider a finite difference approach on a regular mesh, in both 2D and 3D cases. The acoustic wave equation is solved in either a constant density or a variable density domain. All the computations are done in single precision, since double precision is not required in our context. We use CUDA to take advantage of the GPUs computational power. We study different implementations and their impact on the application performance. We obtain a speed up of 10 for Reverse Time Migration and up to 30 for the modeling application over a sequential code running on general purpose CPU.
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Rached Abdelkhalek, Henri Calendra, Olivier Coulaud, Guillaume Latu, Jean Roman. Fast Seismic Modeling and Reverse Time Migration on a GPU Cluster. The 2009 High Performance Computing & Simulation - HPCS'09, Jun 2009, Leipzig, Germany. ⟨inria-00403933⟩

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