Large-scale adaptive mantle convection simulation

A new generation, parallel adaptive-mesh mantle convection code, Rhea, is described and benchmarked. Rhea targets large-scale mantle convection simulations on parallel computers, and thus has been developed with a strong focus on computational efficiency and parallel scalability of both mesh handlin...

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Bibliographic Details
Published in:Geophysical journal international 2013-03, Vol.192 (3), p.889-906
Main Authors: Burstedde, Carsten, Stadler, Georg, Alisic, Laura, Wilcox, Lucas C., Tan, Eh, Gurnis, Michael, Ghattas, Omar
Format: Article
Language:English
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Summary:A new generation, parallel adaptive-mesh mantle convection code, Rhea, is described and benchmarked. Rhea targets large-scale mantle convection simulations on parallel computers, and thus has been developed with a strong focus on computational efficiency and parallel scalability of both mesh handling and numerical solvers. Rhea builds mantle convection solvers on a collection of parallel octree-based adaptive finite element libraries that support new distributed data structures and parallel algorithms for dynamic coarsening, refinement, rebalancing and repartitioning of the mesh. In this study we demonstrate scalability to 122 880 compute cores and verify correctness of the implementation. We present the numerical approximation and convergence properties using 3-D benchmark problems and other tests for variable-viscosity Stokes flow and thermal convection.
ISSN:0956-540X
1365-246X
DOI:10.1093/gji/ggs070