ALOS / PALSAR data processing for the entire observation period
JAXA Supercomputer System Annual Report April 2020-March 2021
Report Number: R20ER0100
Subject Category: Space Technology
- Responsible Representative: Sobue Shin-ichi, ALOS-2 Project Manager(Associate Principal Engineer),Space Technology Directorate I
- Contact Information: Kudoh fumio(kudoh.fumio@jaxa.jp)
- Members: Hidetoshi Hayasaka, Takashi Goto, Fumi Ohgushi, Masanori Doutsu, Takashi Ikeda, Nobuhiro Muramoto, Kouji Hagiwara, Tadahiro Yamamoto, Taroh Mutoh, Kazuhiro Oka, Toshimi Nakata, Katsuyuki Otsuka, Shunsuke Murakami, Hirotaka Kurokawa, Hiroyuki Yokokawa, Shino Yamaguchi, Fumio Kudoh, Hidekazu Mikai
Abstract
Processing the synthetic aperture radar (PALSAR / PALSAR-2) data acquired by the terrestrial observation technology satellites `` DAICHI '' and `` DAICHI-2 '' to generate user-friendly image products (Analysis Ready Data), Make an offer.
Reference URL
Please refer to 'JAXA | Advanced Land Observing Satellite "DAICHI" (ALOS)'.
Reasons and benefits of using JAXA Supercomputer System
JAXA is developing data disclosure to expand the use of earth observation satellite data.
As part of this, JAXA needs to process a large amount of data for the entire observation period of ALOS / PALSAR and ALOS-2 / PALSAR-2, and quickly release user-friendly image data. To achieve this, JSS2 processing was optimal, so we used it.(Up to 350 parallel processing)
Achievements of the Year
This year's processing results.
L2.2 processing of PALSAR in Japan
FBD: 37,711 scenes
FBS: 49,023 scenes
PLR: 7,364 scenes
WB1: 1,662 scenes
WB2: 5 scenes
Processing of PALSAR outside Japan
FBD (L1.1: 568,670, L2.2: 638,759 scenes)
FBS (L1.1: 684,362, L2.2: 389,318 scenes)
PLR (L1.1: 218,529, L2.2: 3,606 scenes)
DSN (L1.1: 4,135, L2.2: 1,085 scenes)
WB1 (L2.2: 116,055 scenes)
WB2 (L2.2: 762 scenes)
Fig.1: PALSAR-2/SCANSAR L2.2@Netherlands(2010/8/12 observation, scene ID: ALPSRS242342550)
Publications
N/A
Usage of JSS
Computational Information
- Process Parallelization Methods: N/A
- Thread Parallelization Methods: N/A
- Number of Processes: 1
- Elapsed Time per Case: 10 Minute(s)
Resources Used(JSS2)
Fraction of Usage in Total Resources*1(%): 1.55
Details
Please refer to System Configuration of JSS2 for the system configuration and major specifications of JSS2.
| System Name | Amount of Core Time(core x hours) | Fraction of Usage*2(%) |
|---|---|---|
| SORA-MA | 0.00 | 0.00 |
| SORA-PP | 2,604,450.21 | 20.41 |
| SORA-LM | 0.00 | 0.00 |
| SORA-TPP | 0.00 | 0.00 |
| File System Name | Storage Assigned(GiB) | Fraction of Usage*2(%) |
|---|---|---|
| /home | 235.24 | 0.22 |
| /data | 105,422.39 | 2.04 |
| /ltmp | 29,036.47 | 2.47 |
| Archiver Name | Storage Used(TiB) | Fraction of Usage*2(%) |
|---|---|---|
| J-SPACE | 73.79 | 2.44 |
*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.
Resources Used(JSS3)
Fraction of Usage in Total Resources*1(%): 0.08
Details
Please refer to System Configuration of JSS3 for the system configuration and major specifications of JSS3.
| System Name | Amount of Core Time(core x hours) | Fraction of Usage*2(%) |
|---|---|---|
| TOKI-SORA | 0.00 | 0.00 |
| TOKI-RURI | 2.00 | 0.00 |
| TOKI-TRURI | 0.00 | 0.00 |
| File System Name | Storage Assigned(GiB) | Fraction of Usage*2(%) |
|---|---|---|
| /home | 272.59 | 0.19 |
| /data | 103,619.77 | 1.74 |
| /ssd | 1,128.52 | 0.59 |
| Archiver Name | Storage Used(TiB) | Fraction of Usage*2(%) |
|---|---|---|
| J-SPACE | 73.79 | 2.44 |
*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 2020-March 2021