Zobrazeno 1 - 10
of 59
pro vyhledávání: '"Mitsuo Yokokawa"'
Publikováno v:
Computers & Fluids. 261:105913
Autor:
Ayano Nakai, Hiroaki Kobayashi, Kazuhiko Komatsu, Yuta Watanabe, Yasuhisa Masaoka, Yoko Isobe, Mitsuo Yokokawa
Publikováno v:
IPDPS Workshops
File outputs or checkpoints for intermediate results frequently appear at appropriate time intervals in large-scale time-advancement numerical simulations where they are utilized for simulation post-processing and/or for restarting consecutive simula
Publikováno v:
Journal of Fluid Mechanics. 929
In high-Reynolds-number turbulence the spatial distribution of velocity fluctuation at small scales is strongly non-uniform. In accordance with the non-uniformity, the distributions of the inertial and viscous forces are also non-uniform. According t
Publikováno v:
Sustained Simulation Performance 2019 and 2020 ISBN: 9783030680480
Direct numerical simulations (DNSs) of incompressible turbulence have been performed since the late 1960s, but simulations that reproduce strongly nonlinear turbulent flows as in the real-world have not been realized. We have implemented two kinds of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::69dc92df4112ea13fde0f044375018f8
https://doi.org/10.1007/978-3-030-68049-7_4
https://doi.org/10.1007/978-3-030-68049-7_4
Publikováno v:
Physical Review Fluids. 5
High-resolution direct numerical simulations of incompressible turbulence with Taylor-scale Reynolds number up to 2250 show that there exists a scaling-range (approximately $100lr/\ensuremath{\eta}l400$), in which the two-point second order velocity
This work introduces a new idea of batched 3D-FFT with a survey of data decomposition methods and a review of the states-of-arts high performance parallel FFT libraries. Besides, it is argued that the particular usage of multiple FFTs has been associ
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a29379f3a2b76f70e61c1981360c1c3a
https://doi.org/10.3233/apc200038
https://doi.org/10.3233/apc200038
Publikováno v:
Lecture Notes in Computer Science ISBN: 9783030227463
ICCS (4)
ICCS (4)
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 Int
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5eb561a2967bb66408da6a27958e5353
https://doi.org/10.1007/978-3-030-22747-0_44
https://doi.org/10.1007/978-3-030-22747-0_44
Autor:
Kazuo Minami, Masao Ogino, Mitsuo Yokokawa, Hiroyuki Takizawa, Takahiro Katagiri, Kenya Yamada, Toru Nagai
Publikováno v:
CANDAR Workshops
In numerical libraries for sparse matrix operations, there are many tuning parameters related to implementation selection. Selection of different tuning parameters could result in totally different performance. Moreover, optimal implementation depend
Autor:
Hiroyuki Takitsuka, Katsuyuki Tanaka, Satoshi Matsushita, Mitsuo Yokokawa, Fumiyoshi Shoji, Toshiyuki Tsukamoto
Publikováno v:
Computer Science - Research and Development. 31:235-243
We report our operational experience of improving the energy efficiency of the power supply and cooling facilities of the K computer. By optimizing the number of active air handlers, the blowout temperature and the number of fans, the power consumpti
Publikováno v:
International Journal of Computational Fluid Dynamics. 30:395-401
Ensemble computing, which is an instance of capacity computing, is an effective computing scenario for exascale parallel supercomputers. In ensemble computing, there are multiple linear systems associated with a common coefficient matrix. We improve