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Zapiski Nauchnykh Seminarov POMI, 2002, Volume 284, Pages 18–35
(Mi znsl1535)
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This article is cited in 8 scientific papers (total in 8 papers)
Factorized-sparse-approximate-inverse preconditionings of linear systems with unsymmetric matrices
A. Yu. Yeremina, A. A. Nikishinb a Research Computer Center, M. V. Lomonosov Moscow State University
b Dorodnitsyn Computing Centre of the Russian Academy of Sciences
Abstract:
The paper considers the application of factorized-sparse-approximate-inverse (FSAI) preconditionings to linear algebraic systems with nonsingular unsymmetric coefficient matrices. Special attention is paid to methods for optimizing the sparsity pattern of such preconditioners. It is numerically demonstrated that the efficiency of FSAI preconditionings can substantially be improved by applying the so-called post-filtering and prefiltering in order to sparsify preconditioning matrices.
Received: 02.03.2002
Citation:
A. Yu. Yeremin, A. A. Nikishin, “Factorized-sparse-approximate-inverse preconditionings of linear systems with unsymmetric matrices”, Computational methods and algorithms. Part XV, Zap. Nauchn. Sem. POMI, 284, POMI, St. Petersburg, 2002, 18–35; J. Math. Sci. (N. Y.), 121:4 (2004), 2448–2457
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https://www.mathnet.ru/eng/znsl1535 https://www.mathnet.ru/eng/znsl/v284/p18
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Abstract page: | 240 | Full-text PDF : | 113 |
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