Improving the parallel performance of overlapping schwarz methods by using a smaller energy minimizing coarse space
Book Chapter
(2018)
Author(s)
A. Heinlein (University of Cologne)
Axel Klawonn (University of Cologne)
Oliver Rheinbach (University of Technology Bergakademie Freiberg)
Olof B. Widlund (Courant Institute of Mathematical Sciences)
Affiliation
External organisation
DOI related publication
https://doi.org/10.1007/978-3-319-93873-8_36
To reference this document use:
https://resolver.tudelft.nl/uuid:dee68574-aa95-4c45-8c42-7008851d8e15
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Publication Year
2018
Language
English
Affiliation
External organisation
Pages (from-to)
383-392
Abstract
We consider a recent overlapping Schwarz method with an energy-minimizing coarse space of reduced size. In numerical experiments for up to 64,000 cores, we show that the parallel efficiency and the total time to solution is improved significantly, compared to our previous overlapping Schwarz method using an alternative energy-minimizing coarse space.
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