Improving the parallel performance of overlapping schwarz methods by using a smaller energy minimizing coarse space

Alexander Heinlein; Axel Klawonn; Oliver Rheinbach; Olof B. Widlund

doi:10.1007/978-3-319-93873-8_36

Improving the parallel performance of overlapping schwarz methods by using a smaller energy minimizing coarse space

Alexander Heinlein^*, Axel Klawonn, Oliver Rheinbach, Olof B. Widlund

^*Corresponding author for this work

Research output: Chapter in Book/Conference proceedings/Edited volume › Chapter › Scientific › peer-review

13 Citations (Scopus)

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.

Original language	English
Title of host publication	Lecture Notes in Computational Science and Engineering
Publisher	Springer
Pages	383-392
Number of pages	10
DOIs	https://doi.org/10.1007/978-3-319-93873-8_36
Publication status	Published - 2018
Externally published	Yes

Publication series

Name	Lecture Notes in Computational Science and Engineering
Volume	125
ISSN (Print)	1439-7358

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10.1007/978-3-319-93873-8_36

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Heinlein, A., Klawonn, A., Rheinbach, O., & Widlund, O. B. (2018). Improving the parallel performance of overlapping schwarz methods by using a smaller energy minimizing coarse space. In Lecture Notes in Computational Science and Engineering (pp. 383-392). (Lecture Notes in Computational Science and Engineering; Vol. 125). Springer. https://doi.org/10.1007/978-3-319-93873-8_36

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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.",

author = "Alexander Heinlein and Axel Klawonn and Oliver Rheinbach and Widlund, {Olof B.}",

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Improving the parallel performance of overlapping schwarz methods by using a smaller energy minimizing coarse space. / Heinlein, Alexander; Klawonn, Axel; Rheinbach, Oliver et al.
Lecture Notes in Computational Science and Engineering. Springer, 2018. p. 383-392 (Lecture Notes in Computational Science and Engineering; Vol. 125).

Research output: Chapter in Book/Conference proceedings/Edited volume › Chapter › Scientific › peer-review

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AU - Rheinbach, Oliver

AU - Widlund, Olof B.

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AB - 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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Improving the parallel performance of overlapping schwarz methods by using a smaller energy minimizing coarse space

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