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JAEA Reports

Parallel processing for the simulation of electromagnetic terahertz wave emission

Higuchi, Kenji; Hiratsuka, Atsushi*; Endo, Tatsuro; Ota, Yukihiro; Machida, Masahiko

JAEA-Data/Code 2010-025, 84 Pages, 2011/02

JAEA-Data-Code-2010-025.pdf:1.94MB

We describe the parallelization and performance evaluation of the simulation program for emission of terahertz electromagnetic wave from high-Tc cuprate superconductors, where high performance was achieved as a result of tuning on multi-core system. Firstly the simulation space was divided for parallel processing, where MPI communication was implemented. The divided simulation space was further assigned to processes on multi-processors. Secondly parallel performance on each processor was accelerated by multi-threads implemented by OpenMP with a ratio at the number of core's. We have evaluated the parallelized program on HA8000 cluster system at Information Technology Center of the University of Tokyo, and, thus, achieved high performance in the analysis of terahertz electromagnetic wave emission from superconductors.

Journal Articles

Towards to realize a quake-proof information control and management system for nuclear power plant

Nakajima, Norihiro; Kimura, Hideo; Higuchi, Kenji; Aoyagi, Tetsuo; Suzuki, Yoshio; Hirayama, Toshio; Yagawa, Genki

Dai-23-Kai Nihon Shimyureshon Gakkai Taikai Happyo Rombunshu, p.117 - 120, 2004/06

The pablic acceptance of nuclear power plants operations requests information of status for the safety and ease. Previous technology in computational scinece is generarlly carried out the analysis as an uniform structure, although the plants are assembled by thousand of parts. The proposed approach is to develope assembled structural analysis and fluid/heat analyis in assembled structures under the natural and actual environmnet such as daily operation, small quakeing which does not induce shut down procedure, and so on.

Journal Articles

Parallel molecular-dynamics simulation on ITBL

Shimizu, Futoshi; Kadoyoshi, Tomoko; Kaburaki, Hideo; Yamagishi, Nobuhiro*; Hasegawa, Yukihiro*; Higuchi, Kenji

Keisan Kogaku Koenkai Rombunshu, 8(2), p.801 - 804, 2003/05

no abstracts in English

Journal Articles

Application of ITBL basic software for virtual organizations

Higuchi, Kenji; Otani, Takayuki; Hasegawa, Yukihiro*; Suzuki, Yoshio; Yamagishi, Nobuhiro*; Kimura, Kazuyuki*; Maesako, Hiroshi*; Fukuda, Masahiro; Yagawa, Genki

Keisan Kogaku Koenkai Rombunshu, 8(2), p.797 - 800, 2003/05

no abstracts in English

Journal Articles

Development of multiple job execution and visualization system on ITBL system infrastructure software and its utilization for parametric studies in environmental modeling

Suzuki, Yoshio; Matsumoto, Nobuko*; Yamagishi, Nobuhiro*; Higuchi, Kenji; Otani, Takayuki; Nagai, Haruyasu; Terada, Hiroaki; Furuno, Akiko; Chino, Masamichi; Kobayashi, Takuya

Computational Science - ICCS 2003, International Conference Saint Petersburg Russian Federation, Melbourne Australia, June 2-4, 2003 Proceedings, p.120 - 129, 2003/00

Information-Technology Based Laboratory (ITBL) project has been propelled as one of e-Japan priority policy programs. The purposes of the project are to share intellectual resources such as remote computers, programs and data in universities and institutes and to support cooperative studies among researchers, building a virtual research environment, ITBL. Japan Atomic Energy Research Institute (JAERI) has been working on installation and management of hardware and development of infrastructure software and applications. As application software, researches on quantum bioinformatics and environmental sciences are carried out. This paper presents utilization of ITBL system infra-structure software for 'Numerical Environment System' which is developed for environmental studies. More effective job executions and visualization are ex-pected by using Task Mapping Editor (TME) and AVS/ITBL, which are tools developed as infrastructure software.

Journal Articles

${it Ab initio}$ study of hydrogen hydrate clathrates for hydrogen storage within the ITBL environment

Sluiter, M. H. F.*; Belosludov, R. V.*; Jain, A.*; Belosludov, V. R.*; Adachi, Hitoshi*; Kawazoe, Yoshiyuki*; Higuchi, Kenji; Otani, Takayuki

Lecture Notes in Computer Science 2858, p.330 - 341, 2003/00

Recently, for the first time a hydrate clathrate was discovered with hydrogen. Aside from the great technological promise that is inherent in storing hydorogen at high density at modest pressures, there is great scientefic interest as this would constitute the first hydrate clathrate with multiple guest molecules per cage. The multiple cage occupancy is controversial, and reproducibility of the experiments has been questioned. Therefore in this study we try to illucidate the remarkable stability of the hydrogen hydrate clathrate, and determine the thermodynamically most favored cage occpancy using highly accrate ${it ab initio}$ computer simulations in a parameter survey. To carry out these extraordinary demanding computations a distributed ${it ab initio}$ code has been developed using the SuperSINET with the ITBL software as the top-layer.

Journal Articles

Grid computing supporting system on ITBL project

Higuchi, Kenji; Imamura, Toshiyuki*; Suzuki, Yoshio; Shimizu, Futoshi; Machida, Masahiko; Otani, Takayuki; Hasegawa, Yukihiro*; Yamagishi, Nobuhiro*; Kimura, Kazuyuki*; Aoyagi, Tetsuo; et al.

Lecture Notes in Computer Science 2858, p.245 - 257, 2003/00

Prototype of the middleware for Grid project promoted by national institutes in Japan has been developed. Key technologies that are indispensable for construction of virtual organization were already implemented onto the prototype of middleware and examined in practical computer/network system from a view point of availability. In addition several kinds of scientific applications are being executed on the prototype system. It seems that successful result in the implementation of those technologies such as security infrastructure, component programming and collaborative visualization in practical computer/network systems means significant progress in Science Grid in Japan.

Journal Articles

A Visual resource integration environment for distributed applications on the ITBL system

Imamura, Toshiyuki*; Yamagishi, Nobuhiro*; Takemiya, Hiroshi*; Hasegawa, Yukihiro*; Higuchi, Kenji; Nakajima, Norihiro

Lecture Notes in Computer Science 2858, p.258 - 268, 2003/00

no abstracts in English

Journal Articles

Development of a virtual research environment in ITBL project

Higuchi, Kenji; Otani, Takayuki; Hasegawa, Yukihiro*; Suzuki, Yoshio; Yamagishi, Nobuhiro*; Kimura, Kazuyuki*; Aoyagi, Tetsuo; Nakajima, Norihiro; Fukuda, Masahiro; Imamura, Toshiyuki*; et al.

Proceedings of International Conference on Supercomputing in Nuclear Applications (SNA 2003) (CD-ROM), 11 Pages, 2003/00

An experimental application of Grid computing was executed in ITBL project promoted by six member institutes of MEXT. Key technologies that are indispensable for construction of virtual organization were implemented onto ITBL Middleware and examined in the experiment from a view point of availability. It seems that successful result in the implementation and examination of those technologies such as security infrastructure, component programming and collaborative visualization in practical computer/network systems means significant progress in Science Grid in Japan.

JAEA Reports

Examination of concept of next generation computer progress report 1999

Higuchi, Kenji; Hasegawa, Yukihiro*; Hirayama, Toshio

JAERI-Review 2000-019, 70 Pages, 2000/12

JAERI-Review-2000-019.pdf:1.89MB

no abstracts in English

Journal Articles

Software environment for local area metacomputing

Takemiya, Hiroshi*; Imamura, Toshiyuki; Koide, Hiroshi; Higuchi, Kenji; Tsujita, Yuichi; Yamagishi, Nobuhiro*; Matsuda, Katsuyuki*; Ueno, Koichi*; Hasegawa, Yukihiro*; Kimura, Toshiya; et al.

Proceedings of 4th International Conference on Supercomputing in Nuclear Applications (SNA 2000) (CD-ROM), 16 Pages, 2000/09

no abstracts in English

JAEA Reports

User's guide of parallel program development environment (PPDE), The 2nd edition

Ueno, Koichi*; Ota, Hirofumi*; Takemiya, Hiroshi*; Imamura, Toshiyuki; Koide, Hiroshi; Matsuda, Katsuyuki*; Higuchi, Kenji; Hirayama, Toshio

JAERI-Data/Code 2000-023, p.287 - 0, 2000/03

JAERI-Data-Code-2000-023.pdf:34.96MB

no abstracts in English

JAEA Reports

TME (Task Mapping Editor): Tool for excuting distributed Parallel Computing; TME user's manual

Takemiya, Hiroshi*; Yamagishi, Nobuhiro*; Imamura, Toshiyuki; Ueno, Koichi*; Koide, Hiroshi; Tsujita, Yuichi; Hasegawa, Yukihiro*; Higuchi, Kenji; Matsuda, Katsuyuki*; Hirayama, Toshio

JAERI-Data/Code 2000-013, p.52 - 0, 2000/03

JAERI-Data-Code-2000-013.pdf:8.64MB

no abstracts in English

JAEA Reports

User's guide of parallel program development environment (PPDE)

Ueno, Koichi*; Ota, Hirofumi*; Takemiya, Hiroshi*; Imamura, Toshiyuki; Koide, Hiroshi; Matsuda, Katsuyuki*; Higuchi, Kenji; Hirayama, Toshio

JAERI-Data/Code 2000-012, p.125 - 0, 2000/03

JAERI-Data-Code-2000-012.pdf:19.49MB

no abstracts in English

JAEA Reports

TME (Task Mapping Editor): Tool for executing distributed parallel computing; Design report on TME

Takemiya, Hiroshi*; Yamagishi, Nobuhiro*; Imamura, Toshiyuki; Ueno, Koichi*; Koide, Hiroshi; Tsujita, Yuichi; Hasegawa, Yukihiro*; Higuchi, Kenji; Matsuda, Katsuyuki*; Hirayama, Toshio

JAERI-Data/Code 2000-010, p.49 - 0, 2000/02

JAERI-Data-Code-2000-010.pdf:2.04MB

no abstracts in English

Journal Articles

Distributed parallel scientific computing environment; SSP

Takemiya, Hiroshi; Ota, Hirofumi; Imamura, Toshiyuki; Koide, Hiroshi; Matsuda, Katsuyuki; Higuchi, Kenji; Hirayama, Toshio; Kasahara, Hironori*

Keisan Kogaku Koenkai Rombunshu, 4(1), p.333 - 336, 1999/05

no abstracts in English

Journal Articles

Development of parallel BMT code based on MCNP4B

Kobayashi, Minoru*; Higuchi, Kenji

Mathematics and Computation, Reactor Physics and Environmental Analysis in Nuclear Applications, 1, p.371 - 378, 1999/00

no abstracts in English

Journal Articles

Distributed parallel scientific computig environment STA, 3; Development of a message passing library for heterogeneous parallel computer cluster

; Imamura, Toshiyuki; *; *; Takemiya, Hiroshi*; Higuchi, Kenji; Kasahara, Hironori*;

Keisan Kogaku Koenkai Rombunshu, 3(1), p.81 - 84, 1998/05

no abstracts in English

Journal Articles

Distributed parallel scientific computing environment STA, 1; Overview

Takemiya, Hiroshi*; Imamura, Toshiyuki; *; ; *; Higuchi, Kenji; ; Kasahara, Hironori*

Keisan Kogaku Koenkai Rombunshu, 3(1), p.73 - 76, 1998/05

no abstracts in English

Journal Articles

Distributed parallel scientific computing environment STA, 4; Development of an integrated environment for heterogeneous parallel computers on STA

Imamura, Toshiyuki; *; *; ; Takemiya, Hiroshi*; Higuchi, Kenji; Kasahara, Hironori*; ; *

Keisan Kogaku Koenkai Rombunshu, 3(1), p.85 - 88, 1998/05

no abstracts in English

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