Conference Presentation (Invited)

FZJ-2019-06911

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Optimizing rational filters for interior eigenvalue solvers

Di Napoli, E. (Corresponding author)FZJ* ; Winkelmann, J.FZJ* ; Kollnig, K.

2019

Please use a persistent id in citations: http://hdl.handle.net/2128/23783

Abstract: Rational filter functions can be used to improve the convergence of the so-called contour-based eigensolvers, a popular family of algorithms for the solution of the interior eigenvalue problem. This talk provide an overview on how such filters can be optimized for performance and convergence based on a non-convex weighted Least-Square scheme.The net result is an almost parameter-free minimization framework with an enhanced usability and productivity which leads to rational functions outperforming state-of-art filters.

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Contributing Institute(s):

1. Jülich Supercomputing Center (JSC)

Appears in the scientific report 2019

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Database coverage:

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