Deflated Krylov iterations in domain decomposition methods

Y. L. Gurieva, V. P. Ilin, D. V. Perevozkin

Research output: Chapter in Book/Report/Conference proceedingConference contributionResearchpeer-review

Abstract

The paper is dedicated to an experimental evaluation of some coarse grid techniques in the context of additive Schwarz method and Krylov subspace methods. Some theoretical aspects are considered and a few modifications of well-known methods are presented. The choice of a correction operator is also studied. The results indicate that a coarse grid correction approach may accelerate an iterative process if employed sensibly. The paper also presents a comparison of overlapping and coarse grid correction in terms of convergence speed and performance.

Original languageEnglish
Title of host publicationDomain Decomposition Methods in Science and Engineering XXIII
EditorsCO Lee, XC Cai, DE Keyes, HH Kim, A Klawonn, EJ Park, OB Widlund
PublisherSpringer-Verlag GmbH and Co. KG
Pages345-352
Number of pages8
ISBN (Print)9783319523880
DOIs
Publication statusPublished - 1 Jan 2017
Event23rd International Conference on Domain Decomposition Methods, DD23 - Jeju Island, Korea, Republic of
Duration: 5 Jul 20159 Jul 2015

Publication series

NameLecture Notes in Computational Science and Engineering
Volume116
ISSN (Print)1439-7358

Conference

Conference23rd International Conference on Domain Decomposition Methods, DD23
CountryKorea, Republic of
City Jeju Island
Period05.07.201509.07.2015

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