MPGMRES : a generalized minimum residual method with multiple preconditioners

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Persistent URL	http://purl.org/net/epubs/work/63574
Record Status	Checked
Record Id	63574
Title	MPGMRES : a generalized minimum residual method with multiple preconditioners
Contributors	C Grief, T Rees (STFC Rutherford Appleton Lab.), DB Szyld
Abstract	Standard Krylov subspace methods only allow the user to choose a single preconditioner, although in many situations there may be a number of possibilities. Here we describe an extension of GMRES that allows the use of more than one preconditioner. We make some theoretical observations, propose a practical algorithm, and present numerical results from problems in domain decomposition and PDE-constrained optimization. Our results illustrate the applicability and potential of the proposed approach.
Organisation	STFC , SCI-COMP
Keywords	iterative methods , GMRES , Krylov subspaces , linear systems , preconditioning
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Language	English (EN)

Type	Details	URI(s)	Local file(s)	Year
Report	RAL Preprints RAL-P-2012-004. 2012.		RAL-P-2012-004.pdf	2012