FROSch

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

Conference paper (2020)

Authors

A. Heinlein Center for Data and Simulation Science, University of Cologne
Axel Klawonn University of Cologne
Sivasankaran Rajamanickam Sandia National Laboratories, New Mexico
Oliver Rheinbach University of Technology Bergakademie Freiberg
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Published Date

2020

Language

English

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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.