Deflation of eigenvalues for iterative methods in lattice QCD
Sep, 20033 pages
Part of Lattice field theory. Proceedings, 21st International Symposium, Lattice 2003, Tsukuba, Japan, July 15-19, 2003, 856-858
Published in:
- Nucl.Phys.B Proc.Suppl. 129 (2004) 856-858
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e-Print:
- hep-lat/0309068 [hep-lat]
Report number:
- BU-HEPP-03-09
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Abstract:
Work on generalizing the deflated, restarted GMRES algorithm, useful in lattice studies using stochastic noise methods, is reported. We first show how the multi-mass extension of deflated GMRES can be implemented. We then give a deflated GMRES method that can be used on multiple right-hand sides of in an efficient manner. We also discuss and give numerical results on the possibilty of combining deflated GMRES for the first right hand side with a deflated BiCGStab algorithm for the subsequent right hand sides.- talk: Tsukuba 2003/07/15
- fermion: lattice field theory
- numerical methods
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