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Abstract

We demonstrate dramatic performance improvements for 3D finite difference RTM using domain partitioning over thousands of compute nodes, processing a shot for a 512x512x512 models with about 3000 time steps in under 30 seconds. We have tested this methodology on velocity models of up to 2048x2048x2048 elements in size. In addition to performance advantages, the demonstrated method benefits from substantially easier programmability because it runs on a homogenous supercomputer using standard C and MPI. It therefore is much easier to maintain, port, tune and extend to novel algorithms codes developed for heterogenous systems such as CPU+GPUs. This approach has a high affinity for existing methods, such as reservoir modeling, which are already processed today using domain partitioning and therefore makes merging seismic imaging and reservoir modeling on a single system much easier. And finally, since this methods runs entire velocity models instead of subsets for each shot, it can be easily extended to perform multisource RTM, leading to further performance benefits.

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/content/papers/10.3997/2214-4609.20149094
2011-05-23
2024-03-19
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http://instance.metastore.ingenta.com/content/papers/10.3997/2214-4609.20149094
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