SCHEDULE: NOV 16-21, 2014

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Petascale High Order Dynamic Rupture Earthquake Simulations on Heterogeneous Supercomputers

SESSION: ACM Gordon Bell Finalist I

EVENT TYPE: Award Presentations & Award Talks, ACM Gordon Bell Finalists

TIME: 1:30PM - 2:00PM

SESSION CHAIR: Taisuke Boku

AUTHOR(S):Alexander Heinecke, Alexander Breuer, Sebastian Rettenberger, Michael Bader, Alice-Agnes Gabriel, Christian Pelties, Arndt Bode, William Barth, Xiang-Ke Liao, Karthikeyan Vaidyanathan, Mikhail Smelyanskiy, Pradeep Dubey

ROOM:New Orleans Theater

ABSTRACT:

We present an end-to-end optimization of the innovative Arbitrary
high-order DERivative Discontinuous Galerkin (ADER-DG) software
SeisSol targeting Intel® Xeon Phi™ coprocessor platforms, achieving
unprecedented earthquake model complexity through coupled simulation of
full frictional sliding and seismic wave propagation.
SeisSol exploits unstructured meshes to flexibly adapt for complicated
geometries in realistic geological models.
Seismic wave propagation is solved simultaneously with earthquake
faulting in a multiphysical manner leading to a heterogeneous solver
structure.
Our architecture-aware optimizations deliver up to 50% of peak
performance, and introduce an efficient compute-communication
overlapping scheme shadowing the multiphysics computations.
SeisSol delivers near-optimal weak scaling, reaching 8.6 DP-PFLOPS on
8,192 nodes of the Tianhe-2 supercomputer.
Our performance model projects reaching 18-20 DP-PFLOPS on the full
Tianhe-2 machine.
Of special relevance to modern civil engineering needs, our pioneering
simulation of the 1992 Landers earthquake shows highly detailed rupture
evolution and ground motion at frequencies up to 10 Hz.