TY - GEN

T1 - Performance of a Two-Path Aliasing Free Calculation of a Spectral DNS Code

AU - Yokokawa, Mitsuo

AU - Morishita, Koji

AU - Ishihara, Takashi

AU - Uno, Atsuya

AU - Kaneda, Yukio

N1 - Funding Information:
Acknowledgments. This work was supported in part by JSPS KAKENHI Grant Number (C) 26390130 and obtained by using computational resources of the K computer provided by the RIKEN Advanced Institute for Computational Science through the HPCI System Research projects (Project IDs: hp140135, hp150174, hp160102, hp170087, hp180109, and hp190076). This work is also supported partially by MEXT Next Generation High-Performance Computing Infrastructures and Applications R&D Program, entitled R&D of a Quantum-Annealing-Assisted Next Generation HPC Infrastructures and Its Applications.
Publisher Copyright:
© 2019, Springer Nature Switzerland AG.

PY - 2019

Y1 - 2019

N2 - 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.

AB - 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.

KW - DNS

KW - Fourier spectral method

KW - Incompressible turbulence

KW - K computer

KW - Parallel computation

KW - Two-path de-aliasing method

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U2 - 10.1007/978-3-030-22747-0_44

DO - 10.1007/978-3-030-22747-0_44

M3 - Conference contribution

AN - SCOPUS:85067605543

SN - 9783030227463

T3 - Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)

SP - 587

EP - 595

BT - Computational Science – ICCS 2019 - 19th International Conference, Proceedings

A2 - Rodrigues, João M.F.

A2 - Cardoso, Pedro J.S.

A2 - Monteiro, Jânio

A2 - Lam, Roberto

A2 - Krzhizhanovskaya, Valeria V.

A2 - Lees, Michael H.

A2 - Sloot, Peter M.A.

A2 - Dongarra, Jack J.

PB - Springer Verlag

T2 - 19th International Conference on Computational Science, ICCS 2019

Y2 - 12 June 2019 through 14 June 2019

ER -