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Project support activity using numerical simulation

JAXA Supercomputer System Annual Report April 2018-March 2019

Report Number: R18EG3211

Subject Category: Research and Development

PDF available here

  • Responsible Representative: Eiji Sima, Research and Development Directorate, Research Unit III
  • Contact Information: Hideyo Negishi(negishi.hideyo@jaxa.jp)
  • Members: Takayuki Ito, Ryoji Takaki, Seiji Tsutsumi, Hiroyuki Ito, Taro Shimizu, Junya Aono, Takanori Haga, Yuhi Morii, Masaharu Abe, Masayuki Kakehi, Mikiroh Motoe, Manabu Hisida, Hideyo Negishi, Yoichi Ohnishi, Miki Nishimoto, Yu Daimon, Ashvin Hosangadi, Masaaki Ino, Osamu Fukasawa, Shinji Ohno, Andrea Zambon, Takenori Nakajima, Takashi Amemiya, Yutaka Umemura, Hironori Fujiwara, Hiroumi Tani, Keiichiro Fujimoto, Tetsufumi Ohmaru, Akiko Kotani, Taroh Fukuda, Mayu Matsumoto, Masashi Toyama, Kei Nishimura, Daiki Muto, Issei Masaie, Susumu Sato, Satoshi Ukai, Hidenao Takahashi, Kota Akai

Abstract

Utilize the simulation technology of Reserch Unit III to deal with the technical problem solving in current JAXA project, and respond to the request for the project concerning issue. In addition, it realizes “added value (efficiency improvement, high reliability, cost / period reduction, ripple effect, etc.)” unique to numerical simulation technology.

Reference URL

Please refer to ‘Research on software, computational engineering, and verification technology | JAXA｜Research and Development Directorate‘.

Reasons for using JSS2

In order to respond timely to project requirements, it is necessary to simulate complex geometries of actual spacecraft and to analyze a large number of conditions in a short period.

Achievements of the Year

With regard to H3, SLIM, HTV-X projects, evaluation of design and risks as well as studies for improvement were carried out by making full use of the simulation technology of Reserch Unit III and JSS2.

Publications

– Web

http://www.kenkai.jaxa.jp/eng/research/software/software.html

Usage of JSS2

Computational Information

  • Process Parallelization Methods: MPI
  • Thread Parallelization Methods: N/A
  • Number of Processes: 100 – 400
  • Elapsed Time per Case: 500 Hour(s)

Resources Used

 

Fraction of Usage in Total Resources*1(%): 0.68

 

Details

Please refer to System Configuration of JSS2 for the system configuration and major specifications of JSS2.

Computational Resources
System Name Amount of Core Time
(core x hours)		 Fraction of Usage*2(%)
SORA-MA 2,726,354.66 0.33
SORA-PP 208,142.80 1.66
SORA-LM 3,527.37 1.64
SORA-TPP 164,561.04 12.04

 

File System Resources
File System Name Storage Assigned
(GiB)		 Fraction of Usage*2(%)
/home 6,530.31 6.76
/data 123,108.92 2.17
/ltmp 22,144.61 1.90

 

Archiver Resources
Archiver Name Storage Used
(TiB)		 Fraction of Usage*2(%)
J-SPACE 119.91 4.20

*1: Fraction of Usage in Total Resources: Weighted average of three resource types (Computing, File System, and Archiver).

*2: Fraction of Usage：Percentage of usage relative to each resource used in one year.

JAXA Supercomputer System Annual Report April 2018-March 2019