FROSch

A Fast And Robust Overlapping Schwarz Domain Decomposition Preconditioner Based on Xpetra in Trilinos

Conference Paper (2020)
Author(s)

A. Heinlein (University of Cologne, Center for Data and Simulation Science)

Axel Klawonn (University of Cologne)

Sivasankaran Rajamanickam (Sandia National Laboratories, New Mexico)

Oliver Rheinbach (University of Technology Bergakademie Freiberg)

Affiliation
External organisation
DOI related publication
https://doi.org/10.1007/978-3-030-56750-7_19
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Publication Year
2020
Language
English
Affiliation
External organisation
Pages (from-to)
176-184
ISBN (print)
9783030567491

Abstract

This article describes a parallel implementation of a two-level overlapping Schwarz preconditioner with the GDSW (Generalized Dryja–Smith–Widlund) coarse space described in previous work [12, 10, 15] into the Trilinos framework; cf. [16]. The software is a significant improvement of a previous implementation [12]; see Sec. 4 for results on the improved performance.

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