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Kim, G.; Nakajima, Kohei*; Teshima, Naoya*; Tatekawa, Takayuki; Suzuki, Yoshio; Takemiya, Hiroshi
Progress in Nuclear Science and Technology (Internet), 2, p.634 - 638, 2011/10
We developed grid-enabled application of full-scale 3D vibration simulator for an entire nuclear power plant on simple orchestration application framework (SOAF). The simulator is an analysis system to study seismic response of a whole digitalized nuclear power plant. In the simulator, components of a power plant are treated in hierarchical manner so that large components are grouped at primary level and small components such as pipes at secondary level. Boundary condition data are transferred from the primary level to the secondary level. SOAF provides functionality to enable users to simply define the data transfer in pipelined scenario which is technically difficult to realize using the existing grid technology. In this paper, we discuss technical issues of the realization of pipelined scenario on grid and demonstrate effectiveness of SOAF by analysis of High Temperature Engineering Test Reactor of JAEA using grid-enabled application implementing SOAF.
Kim, G.; Nakajima, Kohei*; Teshima, Naoya; Tatekawa, Takayuki; Suzuki, Yoshio; Takemiya, Hiroshi
Proceedings of Joint International Conference of 7th Supercomputing in Nuclear Application and 3rd Monte Carlo (SNA + MC 2010) (USB Flash Drive), 5 Pages, 2010/10
Full-Scale 3D vibration simulator for an entire nuclear power plant is a seismic response analysis system for a whole digitalized nuclear power plant. In the system, boundary data from large components are used as input data of small components. To make a whole simulation efficient, we introduced pipeline method in which the data were transferred each time step running all components simulations in parallel. In the realization of the method on grid, since there were no existing grid technologies to sufficiently support the method for a long time, we developed simple orchestration application framework (SOAF) and using the SOAF, we performed seismic response analysis of a test reactor of JAEA and succeeded simulation for a week.
Tatekawa, Takayuki; Nakajima, Kohei*; Kim, G.; Teshima, Naoya; Suzuki, Yoshio; Takemiya, Hiroshi
High Performance Computing on Vector Systems 2010, p.107 - 120, 2010/09
In the atomic field, by integrating various simulation codes which were installed on distributed computers, large-scale and detailed simulations which aim explication of complicated phenomena. However integration of each simulation codes and cooperative operation of the integrated codes make heavy burden for researchers. We have developed the Simple Orchestration Application Framework (SOAF) to cooperatively control simulation codes on remote computers from a client PC. SOAF enables researchers to cooperatively execute various codes on grid infrastructure by only describing a configuration file including the information of execution codes and file flows among them. SOAF does not need substantial modification of the simulation codes. By using SOAF, we successfully execute four plasma simulation codes included in the "Burning Plasma Integrated Code" according to the scenario described in the configuration file.
Tatekawa, Takayuki; Nakajima, Kohei*; Teshima, Naoya; Kim, G.; Suzuki, Yoshio; Takemiya, Hiroshi; Hayashi, Nobuhiko; Iba, Katsuyuki*
Proceedings of 3rd International Joint Conference on Computational Sciences and Optimization (CSO 2010), p.322 - 326, 2010/05
Tatekawa, Takayuki; Nakajima, Kohei*; Kim, G.; Kino, Chiaki; Teshima, Naoya; Suzuki, Yoshio; Takemiya, Hiroshi
FUJITSU Famirikai Rombunshu (Internet), 19 Pages, 2010/03
We have introduced about the framework to make the integration of large and complicated simulation such as a proof strength simulation of nuclear power plants and a control simulation of nuclear fusion plasma which codes are installed to distributed computers. We able to carry out detailed simulations by integrating various simulation methods with development of simulation technique. However it becomes a burden to control the integration of each simulation code for researchers. We have noticed that the execution scenarios of each code in cooperated simulation are roughly categorized to workflow type, pipeline type, and conditional branch type. Then we have developed the framework in which just write those patterns in a configuration file and achieve the cooperative execution of element codes without substantial modification of simulation codes.
Miyamura, Hiroko; Nakajima, Kohei*; Suzuki, Yoshio; Hayashi, Sachiko; Takemiya, Hiroshi; Nakajima, Norihiro
Zen NEC C&C Shisutemu Yuza Kai Heisei-21-Nendo Rombunshu (CD-ROM), 12 Pages, 2010/02
In this paper, we propose data exploration system for the evaluation of numerical simulation results. With the improvement in the performance of supercomputers, numerical simulations have become larger and more complex, which has made the interpretation of simulation results more difficult. Moreover, occasionally, users cannot evaluate numerical simulation results, even though they have spent a great deal of time, because interactive visualization is impossible for such large-scale data. Therefore, we herein propose a data exploration system with which users evaluate large-scale time-series data that has been obtained in a parallel and distributed environment. The proposed system allows users to simultaneously visualize and analyze data in both the global and local scales.
Nakajima, Kohei; Suzuki, Yoshio; Teshima, Naoya; Sugimoto, Shinichiro*; Yoshimura, Shinobu*; Nakajima, Norihiro
Zen NEC C&C Shisutemu Yuza Kai Heisei-20-Nendo Rombunshu (CD-ROM), 13 Pages, 2009/02
Grid computing environment is equipped with a lot of tools to manage jobs and computers. Thereby, user can use the computers without directly access. However, user has to acquire usage of these tools even when user does an easy job because all usages of these tools are peculiar to the grid base. A lot of users think that the grid is difficult even though these tools exist. Then, we developed script generator API to make the job script. These settings were made easy by this API in the user application. In this paper, the outline of this API and the adjustment to the application are described.
Suzuki, Yoshio; Kushida, Noriyuki; Teshima, Naoya; Nakajima, Kohei; Nishida, Akemi; Nakajima, Norihiro
High Performance Computing on Vector Systems 2008, p.65 - 77, 2009/00
Center for computational science and e-systems, Japan Atomic Energy Agency (CCSE/JAEA) has been carrying out R&Ds of grid computing technology since FY1995 aiming at establishing an infrastructure for the computational science research. One of them is R&D of IT-Based Laboratory (ITBL) infrastructure. The ITBL project is a national project placed as one of the e-Japan Priority Policy Program to realize the e-Japan Strategy. By succeeding the technology of ITBL infrastructure, CCSE is carrying out R&D of Atomic Energy Grid Infrastructure (AEGIS) to construct an intelligent infrastructure for the atomic energy research. CCSE has been carrying out international cooperation researches in various fields to advance computer science and to expand AEGIS grid computing environment. To achieve this, we have developed the system to construct interoperable environments between AEGIS and other grid middleware.
Suzuki, Yoshio; Nishida, Akemi; Araya, Fumimasa; Kushida, Noriyuki; Akutsu, Taku; Teshima, Naoya; Nakajima, Kohei; Kondo, Makoto; Hayashi, Sachiko; Aoyagi, Tetsuo; et al.
Journal of Power and Energy Systems (Internet), 3(1), p.60 - 71, 2009/00
Center for computational science and e-systems of Japan Atomic Energy Agency is carrying out R&D in the area of extra large-scale simulation technologies for solving nuclear plant structures in its entirety. Specifically, we focus on establishing a virtual plant vibration simulator on inter-connected supercomputers intended for seismic response analysis of a whole nuclear plant. The simulation of a whole plant is a very difficult task because an extremely large dataset must be processed. To overcome this difficulty, we have proposed and implemented a necessary simulation framework and computing platform. The computing platform enables an extra large-scale whole nuclear plant simulation to be carried out on a grid computing platform ITBL-IS and AEGIS. The simulation framework based on the computing platform has been applied to a linear elastic analysis of the reactor pressure vessel and cooling systems of the nuclear research facility, HTTR.
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)rocessingNakajima, Norihiro; Araya, Fumimasa; Suzuki, Yoshio; Nishida, Akemi; Matsubara, Hitoshi; Nakajima, Kohei
Dai-27-Kai Nihon Shimyureshon Gakkai Taikai Happyo Rombunshu, p.511 - 514, 2008/06
A real space simulator for vibration table targeted to a nuclear power station has been proposed, which generates over tera-byte amount of calculated result. In order to analyze a huge size data, a data analyzer and data analyzing monitor system is suggested in this paper. A result of finite element analysis is examined by the system taking into account relation among neighboring elements' results. It is operated by multi-monitoring to view analyzing process. The system is implemented on a grid computing environment, AEGIS (atomic energy grid infrastructure) with coupling a large data visualization system.
Suzuki, Yoshio; Nakajima, Norihiro; Araya, Fumimasa; Hazama, Osamu; Nishida, Akemi; Kushida, Noriyuki; Akutsu, Taku; Teshima, Naoya; Nakajima, Kohei; Kondo, Makoto; et al.
Proceedings of 16th International Conference on Nuclear Engineering (ICONE-16) (CD-ROM), 9 Pages, 2008/05
Suzuki, Yoshio; Nakajima, Kohei; Kushida, Noriyuki; Kino, Chiaki; Aoyagi, Tetsuo; Nakajima, Norihiro; Iba, Katsuyuki*; Hayashi, Nobuhiko; Ozeki, Takahisa; Totsuka, Toshiyuki; et al.
Fusion Engineering and Design, 83(2-3), p.511 - 515, 2008/04
Times Cited Count：3 Percentile：23.51(Nuclear Science & Technology)In collaboration with the Naka Fusion Institute of Japan Atomic Energy Agency (NFI/JAEA) and the National Institute for Fusion Science of National Institute of Natural Science (NIFS/NINS), Center for Computational Science and E-systems of Japan Atomic Energy Agency (CCSE/JAEA) aims at establishing an integrated framework for experiments and analyses in nuclear fusion research based on the Atomic Energy Grid InfraStructure (AEGIS). AEGIS has been being developed by CCSE/JAEA aiming at providing the infrastructure that enables atomic energy researchers in remote locations to carry out R&D efficiently and collaboratively through the Internet. Toward establishing the integrated framework, we have been applying AEGIS to pre-existing three systems.
Suzuki, Yoshio; Matsumoto, Nobuko; Nakajima, Kohei; Tani, Masayuki; Nakajima, Norihiro
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no abstracts in English
Suzuki, Yoshio; Kushida, Noriyuki; Yamagishi, Nobuhiro; Minami, Takahiro; Matsumoto, Nobuko; Nakajima, Kohei; Nishida, Akemi; Matsubara, Hitoshi; Tian, R.; Hazama, Osamu; et al.
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no abstracts in English
Nakajima, Norihiro; Suzuki, Yoshio; Kushida, Noriyuki; Matsubara, Hitoshi; Nakajima, Kohei; Tani, Masayuki; Miyazaki, Akemi; Tian, R.; Hazama, Osamu
no journal, ,
no abstracts in English
Suzuki, Yoshio; Kushida, Noriyuki; Yamagishi, Nobuhiro; Nakajima, Kohei; Minami, Takahiro; Matsumoto, Nobuko; Aoyagi, Tetsuo; Nakajima, Norihiro; Iba, Katsuyuki*; Hayashi, Nobuhiko; et al.
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no abstracts in English
Hirayama, Toshio; Nakajima, Norihiro; Suzuki, Yoshio; Kino, Chiaki; Akutsu, Taku; Teshima, Naoya; Nakajima, Kohei
no journal, ,
Using computational technology in nuclear science and engineering, itself is meaningful and it is a good help for theoretical research as is experimental research and development. For 2007's exhibition in the International Conference for High Performance Computing, Storage, Networking and Analysis, AEGIS as grid computing, PST as Parallel visualization, CDAS for data mining are demonstrated. For simulation tipics, FIESTA as vibrational and structural analysis, material simulation for metal rusting, and bio-informatics as BAAQ for genom data searching are revealed. As French-Japanese research collaboration hosting by JST, matric solving technique are demonstrated.
Nakajima, Kohei; Suzuki, Yoshio
no journal, ,
It introduces the purpose and the outline of AEGIS (AEGIS is the next nuclear power grid that CCSE has carried out research and development based on the result of the ITBL project). In addition, it reports on the remote experiment carried out between German Max-Planck physical laboratory and Naka JT60.
Ozeki, Takahisa; Suzuki, Yoshio; Totsuka, Toshiyuki; Iba, Katsuyuki*; Nakajima, Kohei; Sakata, Shinya; Isayama, Akihiko; Ide, Shunsuke; Takenaga, Hidenobu; Oshima, Takayuki; et al.
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no abstracts in English
Nakajima, Kohei
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AEGIS (atomic energy grid infrastructure) is researched and developed by CCSE/JAEA for the construction of the computation science base in the nuclear power field. AEGIS is a grid computing infrastructure that enables a large-scale computers, the file servers, and the experimental facilities, etc. that two or more different organization, university, and research laboratories are connected mutually by using a high-speed line of Internet network and SINET3, and of each owns to be used as one integrated environment on the user terminal. It equips the hardware token authentication by the PKCS#11 method, the HTTPS encryption communication, and the user application by client API. Up to now, the effectiveness of remote use for the experimental facilities and the computer resources with AEGIS has been proven by applying it to a remote experiment of JT-60U and integration and the analysis systems of the application.
