2H 2015
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2H 2015

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muo.jp
07.12.2015 Views

Simulations – Fast, detailed, accurate. geophysics 82

Comparative Increase specfem3D 300K Mesh, 1000 Time Steps 1 0 1 1 Node 2 Nodes 2S Intel® Xeon® processor E5-2697 v3 2S Xeon E5-2697 v3 + 1 Intel® Xeon Phi coprocessor 7120P For configuration details, go here. specfem3D 300K Mesh Speed Up 1.15X 58.71.16X GCells “Xeon E5-2697 v3” = Intel® Xeon® processor E5-2697 v3 1 SOURCE: INTEL MEASURED RESULTS AS OF JUNE, 2015 CLUSTER BENCHMARK 2 NODES APPROVED FOR PUBLIC PRESENTATION NEW Application: specfem3D, 300k Mesh, 1000 time steps simulation. Description: SPECFEM3D Cartesian simulates acoustic (fluid), elastic (solid), coupled acoustic/elastic, poroelastic or seismic wave propagation in any type of conforming mesh of hexahedra (structured or not.) It can, for instance, model seismic waves propagating in sedimentary basins or any other regional geological model following earthquakes. It can also be used for nondestructive testing or for ocean acoustics. More here. Availability: • Code: Available here. Specific version is r20645e5-2697 v3 • Recipe: Available here. Optimization guide available here. Usage Model: Symmetric run on 2S Intel® Xeon® processor and Intel® Xeon Phi coprocessor 7120P, MPI + OpenMP* programming, and with a large rank count. Highlights: • Hybridized code and major hotspots were multi-threaded. • Performance gain with the Intel compiler flag “-xCORE-AVX2”. Results: • For 1 and 2 nodes, 1 Intel Xeon Phi coprocessor 7120P created up to 1.16X gain compared to a 2S Intel Xeon processor E5-2697 v3. • For larger node counts, MPI dominates and there is no benefit using the Intel Xeon Phi coprocessor. Software and workloads used in performance tests may have been optimized for performance only on Intel microprocessors. Performance tests, such as SYSmark and MobileMark, are measured using specific computer systems, components, software, operations and functions. Any change to any of those factors may cause the results to vary. You should consult other information and performance tests to assist you in fully evaluating your contemplated purchases, including the performance of that product when combined with other products. For more information go to http://www.intel.com/performance *Other names and brands may be claimed as the property of others 83

Simulations – Fast, detailed, accurate.<br />

geophysics<br />

82

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