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Some New Developments in ILU Preconditioners
Author(s) -
Mayer Jan
Publication year - 2006
Publication title -
pamm
Language(s) - English
Resource type - Journals
ISSN - 1617-7061
DOI - 10.1002/pamm.200610340
Subject(s) - preconditioner , factorization , incomplete lu factorization , gaussian elimination , row , row and column spaces , computer science , gaussian , mathematics , algorithm , algebra over a field , chemistry , matrix decomposition , programming language , iterative method , computational chemistry , pure mathematics , eigenvalues and eigenvectors , physics , quantum mechanics
ILUC, a Crout‐based Gaussian elimination incomplete LDU‐factorization preconditioner, can be improved for some matrices by pivoting by columns and by interchanging rows for better sparsity. Just as many other ILU‐type preconditioners, this can implemented in a multilevel framework and combined with various dropping strategies. (© 2006 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)