Parallelization strategy for wavefield simulation with an elastic iterative solver

Mikhail Belonosov, Vladimir Cheverda, Victor Kostin, Dmitry Neklyudov

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

Abstract

We present a parallelization strategy for our novel iterative method to simulate elastic waves in 3D land inhomogeneous isotropic media via MPI and OpenMP. The unique features of the solver are the preconditioner developed to assure fast convergence of the Krylov-type iteration method at low time frequencies and the way to calculate how the forward modeling operator acts on a vector. We successfully benchmark the accuracy of our solver against the exact solution and compare it to another iterative solver. The quality of the parallelization is justified by weak and strong scaling analysis. Our modification allows simulation in big models including a modified 2.5D Marmousi model comprising 90 million cells.

Original languageEnglish
Title of host publicationSupercomputing - 4th Russian Supercomputing Days, RuSCDays 2018, Revised Selected Papers
EditorsSergey Sobolev, Vladimir Voevodin
PublisherSpringer-Verlag GmbH and Co. KG
Pages331-342
Number of pages12
ISBN (Print)9783030058067
DOIs
Publication statusPublished - Sep 2019
Externally publishedYes
Event4th Russian Supercomputing Days Conference, RuSCDays 2018 - Moscow, Russian Federation
Duration: 24 Sep 201825 Sep 2018

Publication series

NameCommunications in Computer and Information Science
Volume965
ISSN (Print)1865-0929

Conference

Conference4th Russian Supercomputing Days Conference, RuSCDays 2018
CountryRussian Federation
CityMoscow
Period24.09.201825.09.2018

Keywords

  • Elastic equation
  • Krylov iterations
  • MPI
  • OpenMP
  • Preconditioner

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