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Multivariate time series data analysis

JAXA Supercomputer System Annual Report February 2022-January 2023

Report Number: R22EDA201N04

Subject Category: Aeronautical Technology

PDF available here

  • Responsible Representative: Atsushi Hashimoto, Aviation Technology Directorate, Aircraft Lifecycle Innovation Hub
  • Contact Information: Yuya Ohmichi(ohmichi.yuya@jaxa.jp)
  • Members: Mami Hayakawa, Yoshitaka Ishii, Keita Nakamoto, Yuya Ohmichi, Kento Yamada

Abstract

Knowledge extraction techniques for large datasets are important because the computers and numerical simulation techniques have been highly developed and they are producing a huge amount of data. In this study, we have been developing knowledge extraction tools which extract patterns from large data obtained by unsteady fluid simulations and experiments.

Reference URL

N/A

Reasons and benefits of using JAXA Supercomputer System

To perform large-scale data analysis utilizing the large memory capacity and massively parallel simulations.

Achievements of the Year

A noise reduction method for high-dimensional time-series data such as the unsteady pressure-sensitive paint measurement data was proposed in this study and its performance was demonstrated by several analysis conducted using the JSS3.

Publications

– Peer-reviewed papers

Ohmichi, Y., Takahashi, K. & Nakakita, K. Time-series image denoising of pressure-sensitive paint data by projected multivariate singular spectrum analysis. Exp Fluids 63, 181 (2022). https://doi.org/10.1007/s00348-022-03523-5

Usage of JSS

Computational Information

  • Process Parallelization Methods: N/A
  • Thread Parallelization Methods: OpenMP
  • Number of Processes: 1
  • Elapsed Time per Case: 12 Hour(s)

JSS3 Resources Used

 

Fraction of Usage in Total Resources*1(%): 0.50

 

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 12077263.81 0.53
TOKI-ST 22297.44 0.02
TOKI-GP 3152.45 0.13
TOKI-XM 23981.62 15.00
TOKI-LM 4483.76 0.30
TOKI-TST 0.00 0.00
TOKI-TGP 0.00 0.00
TOKI-TLM 0.00 0.00

 

File System Resources
File System Name Storage Assigned
(GiB)
Fraction of Usage*2(%)
/home 358.10 0.32
/data and /data2 27591.81 0.21
/ssd 167.62 0.02

 

Archiver Resources
Archiver Name Storage Used
(TiB)
Fraction of Usage*2(%)
J-SPACE 5.27 0.02

*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)
752.69 0.52

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

JAXA Supercomputer System Annual Report February 2022-January 2023