PALSAR-2 Global Water Map
JAXA Supercomputer System Annual Report February 2023-January 2024
Report Number: R23EER40100
Subject Category: Space Technology
- Responsible Representative: Riko Oki, Earth Observation Research Center, Space Technology Directorate I
- Contact Information: Sota Hirayama(hirayama.sota@jaxa.jp)
- Members: Sota Hirayama, Naoyoshi Hirade, Koichi Imamura
Abstract
In the previous fiscal year, we conducted trial production in the Asian region, where ALOS-2/PALSAR-2 ScanSAR data are abundant, and were able to produce a high-resolution land-use and land-cover (HRLULC) map of the Asian region with a high overall accuracy of 86.2%. In order to further improve the accuracy, a global water map, which is also effective for LULC classification, was created from ALOS-2/PALSAR-2 data this fiscal year.
Reference URL
N/A
Reasons and benefits of using JAXA Supercomputer System
Accelerating large-scale high-resolution satellite image processing using machine learning with JSS3
Achievements of the Year
The use of JSS3 enabled the classification process, which originally took several days to several months, to be carried out in about one day. This allowed us to conduct many classification trials and create a global water map.
Publications
N/A
Usage of JSS
Computational Information
- Process Parallelization Methods: Parallel execution of shell script with xargs
- Thread Parallelization Methods: N/A
- Number of Processes: 2 – 10
- Elapsed Time per Case: 10 Hour(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 | 757.60 | 0.00 |
TOKI-ST | 65395.18 | 0.07 |
TOKI-GP | 22111.80 | 0.29 |
TOKI-XM | 7.34 | 0.00 |
TOKI-LM | 0.00 | 0.00 |
TOKI-TST | 1.92 | 0.00 |
TOKI-TGP | 1015.61 | 78.16 |
TOKI-TLM | 406.33 | 1.14 |
File System Name | Storage Assigned(GiB) | Fraction of Usage*2(%) |
---|---|---|
/home | 0.00 | 0.00 |
/data and /data2 | 51200.00 | 0.32 |
/ssd | 5120.00 | 0.48 |
Archiver Name | Storage Used(TiB) | Fraction of Usage*2(%) |
---|---|---|
J-SPACE | 0.00 | 0.00 |
*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 2023-January 2024