Seed methods for linear equations in lattice qcd problems with multiple right-hand sides

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dc.creatorAbdel-Rehim, Abdou
dc.creatorMorgan, Ronald B.
dc.creatorWilcox, Walter
dc.date2009-01-22
dc.date2009-02-26
dc.date.accessioned2026-07-07T12:53:30Z
dc.date.available2026-07-07T12:53:30Z
dc.descriptionWe consider three improvements to seed methods for Hermitian linear systems with multiple right-hand sides: only the Krylov subspace for the first system is used for seeding subsequent right-hand sides, the first right-hand side is solved past convergence, and periodic re-orthogonalization is used in order to control roundoff errors associated with the Conjugate Gradient algorithm. The method is tested for the case of Wilson fermions near kappa critical and a considerable speed up in the convergence is observed.
dc.description7 pages, 2 figures. Presented at the 26th International Symposium on Lattice Field Theory, Williamsburg, VA, USA, 14-19 Jul 2008. Fixed a hyperlink to one of the references
dc.identifierhttps://arxiv.org/abs/0901.3512
dc.identifierhttp://arxiv.org/abs/0901.3512
dc.identifierPoS LATTICE2008:038,2008
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/223642
dc.subjectHigh Energy Physics - Lattice
dc.titleSeed methods for linear equations in lattice qcd problems with multiple right-hand sides
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