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Persistent URL http://purl.org/net/epubs/work/62980
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Record Id 62980
Title A multi-preconditioned GMRES algorithm
Abstract Standard Krylov subspace methods only allow the user to choose a single preconditioner. In many situations, however, there is no 'best' choice, but a number of possible candidates. In this talk we describe an extension of GMRES, multi-preconditioned GMRES, which allows the use of more than one preconditioner, and combines their properties in an optimal way. As well as describing some theoretical properties of the new algorithm we will present numerical results which highlight the utility of the approach.
Organisation CSE-NAG , STFC , SCI-COMP
Keywords preconditioning , Iterative methods
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Language English (EN)
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Presentation Presented at SIAM conference of applied linear algebra, Valencia, Spain, 17-22 Jul 2012. Valencia_rees.pdf 2012