Articles | Volume 10, issue 1
Development and technical paper
10 Jan 2017
Development and technical paper |  | 10 Jan 2017

Optimal numerical solvers for transient simulations of ice flow using the Ice Sheet System Model (ISSM versions 4.2.5 and 4.11)

Feras Habbal, Eric Larour, Mathieu Morlighem, Helene Seroussi, Christopher P. Borstad, and Eric Rignot

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Cited articles

Amestoy, P. R., Duff, I. S., L'Excellent, J.-Y., and Koster, J.: A fully asynchronous multifrontal solver using distributed dynamic scheduling, SIAM J. Matrix Anal. A., 23, 15–41, 2001.
Amestoy, P. R., Guermouche, A., L'Excellent, J.-Y., and Pralet, S.: Hybrid scheduling for the parallel solution of linear systems, Parallel Comput., 32, 136–156, 2006.
Balay, S., Gropp, W. D., McInnes, L. C., and Smith, B. F.: Efficient management of parallelism in object-oriented numerical software libraries, in: Modern software tools for scientific computing, Springer, 163–202, 1997.
Benzi, M., Golub, G. H., and Liesen, J.: Numerical solution of saddle point problems, Acta Numerica, 14, 1–137, 2005.
Blatter, H.: Velocity and stress fields in grounded glaciers: a simple algorithm for including deviatoric stress gradients, J. Glaciol., 41, 333–344, 1995.
Short summary
This work presents the results from testing a suite of numerical solvers on a standard ice sheet benchmark test. We note the relevance of this test to practical simulations and identify the fastest solvers for the transient simulation. The highlighted solvers show significant speed-ups in relation to the default solver (~1.5–100 times faster) and enable a new capability for solving massive, high-resolution models that are critical for improving projections of ice sheets and sea-level change.