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Titel |
Nonlinearities and multigrid solvers for geodynamic applications using staggered grid finite differences. |
VerfasserIn |
Anton Popov, Boris Kaus |
Konferenz |
EGU General Assembly 2014
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Medientyp |
Artikel
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Sprache |
Englisch
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Digitales Dokument |
PDF |
Erschienen |
In: GRA - Volume 16 (2014) |
Datensatznummer |
250100810
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Publikation (Nr.) |
EGU/EGU2014-16809.pdf |
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Zusammenfassung |
We report on the state of the development of the massively parallel staggered-grid finite difference version of the LaMEM code, parts of which have scaled to over 260’000 cores. In particular we present i) our matrix-free nonlinear solution strategy for visco-elasto-plasticity, ii) updated linear solver that includes a coupled velocity-pressure geometric multigrid preconditioner, and iii) an optimized treatment of the makers with approximate stress-rotation algorithm generalized from 2D to 3D formulation. The capabilities of the solver are demonstrated with a set of geodynamically-relevant benchmarks and example problems on the massively parallel computers.
Acknowledgements.
Funding was provided by the European Research Council under the European Community’s Seventh Framework Program (FP7/2007-2013) / ERC Grant agreement #258830. Numerical computations have been performed on JUQUEEN of the Jülich high-performance computing center. |
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