Project support activity using numerical simulation

JAXA Supercomputer System Annual Report February 2024-January 2025

Report Number: R24EG3211

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: Ashvin Hosangadi, Junya Aono, Masaharu Abe, Takashi Amemiya, Hiroaki Amakawa, Yu Daimon, Taroh Fukuda, Hironori Fujiwara, Keiichiro Fujimoto, Osamu Fukasawa, Naoki Fukuda, Manabu Hisida, Takanori Haga, Shotaro Hamato, Takayuki Ito, Hiroyuki Ito, Masaru Kusano, Shohei Kawahara, Masako Kikuchi, Akio Kawaguchi, Akari Murata, Shogo Nakao, Kei Nitta, Hideyo Negishi, Takenori Nakajima, Yoichi Ohnishi, Shinji Ohno, Tetsuji Ogawa, Taro Shimizu, Seiji Tsutsumi, Ryoji Takaki, Masashi Toyama, Akimitsu Terunuma, Satoshi Ukai, Himeko Yamamoto, Keita Yamamoto, Masafumi Yamamoto, Rika Yamada, Timothy Weathers, 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 'Numerical Simulation Technology | JEDI Center(JAXA's Engineering Digital Innovation Center)'.

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(%): 1.02

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	22220331.94	1.02
TOKI-ST	1101842.30	1.13
TOKI-GP	19.43	0.00
TOKI-XM	500.85	0.24
TOKI-LM	7198.89	0.52
TOKI-TST	312038.89	5.60
TOKI-TGP	41.52	0.29
TOKI-TLM	4764.93	12.65

File System Resources
File System Name	Storage Assigned (GiB)	Fraction of Usage*2(%)
/home	4220.07	2.85
/data and /data2	372321.05	1.78
/ssd	22362.84	1.20

Archiver Resources
Archiver Name	Storage Used (TiB)	Fraction of Usage*2(%)
J-SPACE	206.76	0.68

*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)	2369.89	1.62

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