Parallel block preconditioning by using the solver of Elmer

Conference paper (2013)

Authors

Mika Malinen CSC-IT Center for Science Ltd.

J. Ruokolainen CSC-IT Center for Science Ltd.

P. Räback CSC-IT Center for Science Ltd.

J. Thies Uppsala University

T. Zwinger CSC-IT Center for Science Ltd.

Affiliation

External organisation

Preconditioning Elmer software Generalized Stokes equation Parallel linear solver Variable viscosity

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Published Date

2013

Language

English

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Abstract

We describe our recent attempts to produce effective parallel block preconditioners by employing the open source finite element package Elmer. Two example problems corresponding to the computational simulation of land ice flow and the high-fidelity modelling of small acoustical devises are considered. We present features which make these problems challenging from the viewpoint of the preconditioner design and also demonstrate how the requirement of achieving scalability can even lead to rethinking the overall formulation of the problem. The utility of the preconditioners implemented has been explored experimentally.