Open Access

ABSTRACT

H-matrix preconditioners for saddle-point systems from meshfree discretization ¹

Suely Oliveira², Fang Yang²

1 This work was supported by NSF ITR grant DMS-0213305.
2 Department of Computer Science, University of Iowa, Iowa City 52242 (email for contact: oliveira@cs.uiowa.edu).

The International Conference on Computational & Experimental Engineering and Sciences 2007, 3(2), 113-120. https://doi.org/10.3970/icces.2007.003.113

Abstract

In this paper we describe and compare preconditioners for saddle-point systems obtained from meshfree discretizations, using the concepts of hierarchical (or H-)matrices. Previous work by the authors using this approach did not use H-matrix techniques throughout, as is done here. Comparison shows the method described here to be better than the author's previous method, an AMG method adapted to saddle point systems, and conventional iterative methods such as JOR.

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Keywords

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