Global Terrestrial Hydrological Simulation System "Today's Earth"
JAXA Supercomputer System Annual Report February 2024-January 2025
Report Number: R24EER20200
Subject Category: Space Technology
- Responsible Representative: Kosuke Yamamoto, Space Technology Directorate I, Earth Observation Research Center
- Contact Information: Today's Earth Research and Development Group(Z-watercnt@ml.jaxa.jp)
- Members: Takafusa Andoh, Tomohiko Higashiuwatoko, Misako Kachi, Takuji Kubota, Ryosuke Kakuda, Yukihiko Onuma, Kazuhiro Sakamoto, Kei Yoshimura, Haruya Yoshikawa, Kosuke Yamamoto
Abstract
Today's Earth is the global terrestrial hydrological simulation system to estimate various hydrological variables relating to the conditions of land surface and rivers utilizing satellite observation, developed under the joint-research of the JAXA and th University of Tokyo. In this project, long-term reprocessing of the past period of the system and development study of a future high-resolution simulation system for the global 10 km or more will be conducted on JSS.
Reference URL
N/A
Reasons and benefits of using JAXA Supercomputer System
It is possible to perform large-scale processing that is difficult to execute on an EORC server, such as long-term reprocessing of past periods and the development of high-resolution simulation systems with a global resolution of 10 km or more.
Achievements of the Year
Continuing from the previous fiscal year, the integrated land model ILS (Integrated Land Simulator) used in the simulation of the Today's Earth system was upgraded to a global resolution of 0.1 degrees, which is necessary for long-term reprocessing of past periods and for the development of high-resolution simulation systems. We confirmed the normal operation and the validity of the output results on JSS3 by constructing the environment to match the version of the actual operational environment in the EORC environment.
Publications
N/A
Usage of JSS
Computational Information
- Process Parallelization Methods: MPI
- Thread Parallelization Methods: N/A
- Number of Processes: 100
- Elapsed Time per Case: 70 Minute(s)
JSS3 Resources Used
Fraction of Usage in Total Resources*1(%): 0.02
Details
Please refer to System Configuration of JSS3 for the system configuration and major specifications of JSS3.
| System Name | CPU Resources Used(Core x Hours) | Fraction of Usage*2(%) |
|---|---|---|
| TOKI-SORA | 147285.33 | 0.01 |
| TOKI-ST | 0.00 | 0.00 |
| TOKI-GP | 0.00 | 0.00 |
| TOKI-XM | 0.00 | 0.00 |
| TOKI-LM | 0.00 | 0.00 |
| TOKI-TST | 0.00 | 0.00 |
| TOKI-TGP | 0.00 | 0.00 |
| TOKI-TLM | 0.00 | 0.00 |
| File System Name | Storage Assigned(GiB) | Fraction of Usage*2(%) |
|---|---|---|
| /home | 1024.00 | 0.69 |
| /data and /data2 | 110955.00 | 0.53 |
| /ssd | 30720.00 | 1.65 |
| Archiver Name | Storage Used(TiB) | Fraction of Usage*2(%) |
|---|---|---|
| J-SPACE | 16.81 | 0.05 |
*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 Used(Hours) | Fraction of Usage*2(%) | |
|---|---|---|
| ISV Software Licenses(Total) | 0.00 | 0.00 |
*2: Fraction of Usage：Percentage of usage relative to each resource used in one year.
JAXA Supercomputer System Annual Report February 2024-January 2025