An agglomerate multilevel preconditioner for linear isostasy saddle point problems

Authors:
Erik Bängtsson;Maya Neytcheva
Affiliations:
Department of Information Technology, Uppsala University, Uppsala, Sweden;Department of Information Technology, Uppsala University, Uppsala, Sweden
Venue:
LSSC'05 Proceedings of the 5th international conference on Large-Scale Scientific Computing
Year:
2005

Citing 3
Cited 1

Matrix Renumbering ILU: An Effective Algebraic Multilevel ILU Preconditioner for Sparse Matrices

SIAM Journal on Matrix Analysis and Applications
AMGE Based on Element Agglomeration

SIAM Journal on Scientific Computing
A Preconditioner for the Steady-State Navier--Stokes Equations

SIAM Journal on Scientific Computing

Original article: Macro-elementwise preconditioning methods

Mathematics and Computers in Simulation

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Abstract

This paper discusses preconditioners for the iterative solution of nonsymmetric indefinite linear algebraic systems of equations as arising in modeling of the purely elastic part of glacial rebound processes. The iteration scheme is of inner-outer type using a multilevel preconditioner for the inner solver. Numerical experiments are provided showing a robust behavior.