Project support activity using numerical simulation

JAXA Supercomputer System Annual Report February 2023-January 2024

Report Number: R23EG3211

Subject Category: Research and Development

Responsible Representative: Taro Shimizu, Research and Development Directorate, Research Unit III
Contact Information: Hideyo Negishi(negishi.hideyo@jaxa.jp)
Members: Junya Aono, Masaharu Abe, Takashi Amemiya, Hiroaki Amakawa, Yu Daimon, Taroh Fukuda, Hironori Fujiwara, Keiichiro Fujimoto, Osamu Fukasawa, Manabu Hisida, Takanori Haga, Shotaro Hamato, Ashvin Hosangadi, Takayuki Ito, Hiroyuki Ikeda, Hiroyuki Ito, Masaru Kusano, Shohei Kawahara, Masayuki Kakehi, Masako Kikuchi, Akio Kawaguchi, Yuuki Maekawa, Akari Murata, Shogo Nakao, Hideyo Negishi, Takenori Nakajima, Yoichi Ohnishi, Shinji Ohno, Tetsuji Ogawa, Shuhei Oono, Taro Shimizu, Yoshiyuki Sawa, Seiji Tsutsumi, Ryoji Takaki, Masashi Toyama, Akimitsu Terunuma, Satoshi Ukai, Himeko Yamamoto, Keita Yamamoto, Masafumi Yamamoto, Hikaru Yamashita, Rika Yamada, Andrea Zambon

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 https://stage.tksc.jaxa.jp/jedi/en/simul/index.html .

Reasons and benefits of using JAXA Supercomputer System

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 JAXA projects such as H3, SLIM, MMX, HTV-X, and so on, 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 JSS3.

Publications

N/A

Usage of JSS

Computational Information

Process Parallelization Methods: MPI
Thread Parallelization Methods: FLAT
Number of Processes: 12 – 400
Elapsed Time per Case: 100 Hour(s)

JSS3 Resources Used

Fraction of Usage in Total Resources*1(%): 1.38

Details

Please refer to System Configuration of JSS3 for the system configuration and major specifications of JSS3.

Computational Resources
System Name	CPU Resources Used (Core x Hours)	Fraction of Usage*2(%)
TOKI-SORA	31311170.94	1.41
TOKI-ST	903102.01	0.98
TOKI-GP	533.72	0.01
TOKI-XM	0.00	0.00
TOKI-LM	8864.83	0.68
TOKI-TST	644230.58	10.56
TOKI-TGP	28.29	2.18
TOKI-TLM	122.19	0.34

File System Resources
File System Name	Storage Assigned (GiB)	Fraction of Usage*2(%)
/home	4331.10	3.60
/data and /data2	277677.59	1.71
/ssd	21136.35	2.00

Archiver Resources
Archiver Name	Storage Used (TiB)	Fraction of Usage*2(%)
J-SPACE	201.23	0.73

*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.

ISV Software Licenses Used

ISV Software Licenses Resources
	ISV Software Licenses Used (Hours)	Fraction of Usage*2(%)
ISV Software Licenses (Total)	9891.62	4.46

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