Document Type

Article

Publication Date

10-1-1999

Publication Title

SIAM Journal on Scientific Computing

Abstract

We introduce some cheaper and faster variants of the classical additive Schwarz preconditioner (AS) for general sparse linear systems and show, by numerical examples, that the new methods are superior to AS in terms of both iteration counts and CPU time, as well as the communication cost when implemented on distributed memory computers. This is especially true for harder problems such as indefinite complex linear systems and systems of convection-diffusion equations from three-dimensional compressible flows. Both sequential and parallel results are reported.

Volume

21

Issue

2

First Page Number

792

Last Page Number

797

DOI

10.1137/S106482759732678X

Publisher Statement

© 1999, SIAM Publications.

Included in

Mathematics Commons

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