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RIKEN Center for Computational Science Application Development Team

Team Leader: Hirofumi Tomita (D.Eng.)

Research Summary

Hirofumi  Tomita(D.Eng.)

Aiming for maximizing the outcome from post K-computer, Application Development Team conducts the R&D with the related researchers from architecture, system software and algorithm field. Its core missions are:

  • 1.Co-design based on target applications
    The team executes the co-design of application and system through the performance analysis and optimization of the "target applications" that have been chosen by the advisory panel of MEXT as the priority social and scientific challenges, in cooperation with the counterpart agencies and the colleague teams in this project. The team also works with the co-design promotion team to develop the new algorithm and the implementation method. The optimization methodology is recorded and utilized by the following applications.
  • 2.Establishment of the application benchmark suites for system performance evaluation
    The team develops and maintains the "mini-apps" that are designed to represent the same performance characteristics as the full applications from major computational science domains. It is designed to be compact and easy to run, and is made available in source code format, which is often not the case with the full applications. They are studied from various analysis angles and are executed for performance collection on supercomputers including K-computer, and are hoped to be used internationally as the standard tool for system performance evaluation. Collaborative research with the universities is conducted, aiming for the establishment of the future oriented system performance evaluation methodology.
  • 3.Application infrastructure R&D
    The team, along with the R&D department of AICS, develops the application infrastructure including the libraries and frameworks which are important elements in maximizing the outcome of the users of post K-computer.

The team also leads the promotional activities to continue the research work done through the "Feasibility Study on Future HPC Infrastructures (Application Working Group)", extracting the social and scientific challenges to be solved by HPC during next 5-10 years.

Main Research Fields

  • Environmental Science

Related Research Fields

  • Interdisciplinary Science & Engineering


  • Co-design based on target applications
  • Establishment of the application benchmark suites for system performance evaluation
  • Application infrastructure R&D

Selected Publications

  • 1.Y. Kawashima, K. Hirao:
    "Singularity Correction for Long-Range-Corrected Density Functional Theory with Plane-Wave Basis Sets"
    The Journal of Physical Chemistry A, Vol. 121, No. 9, P. 2035-2045 (2017)
  • 2.Y. Kawashima, K. Sawada, T. Nakajima, M. Tachikawa:
    "Nuclear quantum effect on the intermolecular hydrogen bond of acetic acid - phosphorous acid anion cluster: An ab initio path integral molecular dynamics study"
    Journal of Computer Chemistry, Vol. 15, P. 203-209 (2016)
  • 3.Y. Nakamura, Y. Kuramashi, S. Takeda, A. Ukawa:
    "Critical endline of the finite temperature phase transition for 2+1 flavor QCD around the SU(3)-flavor symmetric point"
    PHYSICAL REVIEW D, 94, 114507 (2016)
  • 4.Yashiro, H., Terasaki, K., Miyoshi, T., and Tomita, H.:
    "Performance evaluation of throughput-aware framework for ensemble data assimilation: The case of NICAM-LETKF"
    Geosci. Model Dev. Volume 9, issue 7, Page 2293-2300 (2016).

Related Links

Lab Members

Principal investigator

Hirofumi Tomita
Team Leader

Core members

Yoshifumi Nakamura
Research Scientist
Seiya Nishizawa
Research Scientist
Yuji Sugita
Research Scientist
Seiji Yunoki
Research Scientist
Takahito Nakajima
Research Scientist
Yuichi Otsuka
Research Scientist
Jaewoon Jung
Research Scientist
Chigusa Kobayashi
Research Scientist
Hiroshi Ueda
Research Scientist
Makoto Tsubokura
Research Scientist
Keiji Onishi
Research Scientist
Yohsuke Murase
Research Scientist
Rahul Bale
Research Scientist
Naoki Yoshioka
Research Scientist
Soichiro Suzuki
Research & Development Scientist
Kazunori Mikami
Research & Development Scientist
Kiyoshi Kumahata
Research & Development Scientist
Kazuo Minami
Research & Development Scientist
Akiyoshi Kuroda
Research & Development Scientist
Shigetoshi Sota
Research & Development Scientist
Yuta Kawai
Postdoctoral Researcher
Koji Nishiguchi
Postdoctoral Researcher
Keigo Nitadori
Technical Scientist
Mamiko Hata
Technical Staff I
Hisashi Yashiro
Visiting Scientist
Kohei Fujita
Visiting Scientist
Masatomo Hashimoto
Visiting Scientist

Contact Information

7-1-26 Minatojima-minamimachi, Chuo-ku
Kobe, Hyogo
650-0047 Japan
Email: Email: htomita [at] riken.jp