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Seismic Imaging Why GPUs? • Price-to-performance ratio improvement – Want 10X to change platforms • Payback must more than cover effort & risk • Got 10X ten years ago in switching from supercomputers to PC clusters – Several years ago there were indicators we can get 10X or more on GPUs • Peak performance • Benchmarks • Simple prototype kernels 12
Seismic Imaging Parallel algorithms • Highly parallelizable – small kernel, inside large set of loops – computation dominates communication • t IO ~ 1 day
Page 1 and 2: Industrial Seismic Imaging on a GPU
Page 3 and 4: Seismic Imaging Data gas oil H 2 O
Page 5 and 6: Seismic Imaging Data 5
Page 7 and 8: Seismic Imaging Computational kerne
Page 9 and 10: Seismic Imaging Theory 9
Page 11: Seismic Imaging Why GPUs? • Price
Page 15 and 16: Seismic Imaging Hierarchical batch
Page 17 and 18: GPU Programming Heuristics • Thre
Page 19 and 20: GPU Programming Production codes
Page 21 and 22: GPU Speed-up Kirchhoff Imaging Kern
Page 23 and 24: Speedup “Reverse-time” Imaging
Page 25 and 26: “Reverse-time” Imaging Inter-GP
Page 27 and 28: Multi-GPU Performance Using MPI+Ope
Page 29 and 30: Hess GPU Cluster • Got 32-node sy
Page 31 and 32: Hess GPU Cluster • 2 nd generatio
Page 33: Acknowledgements • Code co-author

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