Performance of a Two-Path Aliasing Free Calculation of a Spectral DNS Code

Mitsuo Yokokawa, Koji Morishita, Takashi Ishihara, Atsuya Uno, Yukio Kaneda

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

A direct numerical simulation (DNS) code was developed for solving incompressible homogeneous isotropic turbulence with high Reynolds numbers in a periodic box using the Fourier spectral method. The code was parallelized using the Message Passing Interface and OpenMP with two-directional domain decomposition and optimized on the K computer. High resolution DNSs with up to grid points were performed on the K computer using the code. Efficiencies of 3.84%, 3.14%, and 2.24% peak performance were obtained in double precision DNSs with grid points, respectively. In addition, a two-path alias-free procedure is proposed and clarified its effectiveness for some number of parallel processes.

Original languageEnglish
Title of host publicationComputational Science – ICCS 2019 - 19th International Conference, Proceedings
EditorsJoão M.F. Rodrigues, Pedro J.S. Cardoso, Jânio Monteiro, Roberto Lam, Valeria V. Krzhizhanovskaya, Michael H. Lees, Peter M.A. Sloot, Jack J. Dongarra
PublisherSpringer Verlag
Pages587-595
Number of pages9
ISBN (Print)9783030227463
DOIs
Publication statusPublished - Jan 1 2019
Event19th International Conference on Computational Science, ICCS 2019 - Faro, Portugal
Duration: Jun 12 2019Jun 14 2019

Publication series

NameLecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
Volume11539 LNCS
ISSN (Print)0302-9743
ISSN (Electronic)1611-3349

Conference

Conference19th International Conference on Computational Science, ICCS 2019
CountryPortugal
CityFaro
Period6/12/196/14/19

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Keywords

  • DNS
  • Fourier spectral method
  • Incompressible turbulence
  • K computer
  • Parallel computation
  • Two-path de-aliasing method

ASJC Scopus subject areas

  • Theoretical Computer Science
  • Computer Science(all)

Cite this

Yokokawa, M., Morishita, K., Ishihara, T., Uno, A., & Kaneda, Y. (2019). Performance of a Two-Path Aliasing Free Calculation of a Spectral DNS Code. In J. M. F. Rodrigues, P. J. S. Cardoso, J. Monteiro, R. Lam, V. V. Krzhizhanovskaya, M. H. Lees, P. M. A. Sloot, & J. J. Dongarra (Eds.), Computational Science – ICCS 2019 - 19th International Conference, Proceedings (pp. 587-595). (Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics); Vol. 11539 LNCS). Springer Verlag. https://doi.org/10.1007/978-3-030-22747-0_44