Centers & Labs

RIKEN Center for Computational Science

HPC Usability Research Team

Team Leader: Hiroya Matsuba (Ph.D.)
Hiroya  Matsuba(Ph.D.)

The HPC Usability Research Team aims to increase the number of applications of the K computer. It especially focuses on applications that make use of both simulation and data analysis. We expect that the combination of simulation and data analysis will increase the value of both components because data can improve simulation accuracy and simulations can generate valuable data. However, developing such combined applications is difficult because developers must have expertise in computer systems, as well as simulation and data analysis algorithms, to connect the different types of programs. Our team studies tools and frameworks that simplify the process of developing and executing such combined applications so that more people, especially those in industry, can use the supercomputer for their innovative products and services.

Main Research Field


Related Research Fields

Interdisciplinary science and engineering / Engineering


  • Simulation Platform
  • Data Analytics Platform
  • Virtualization and Container Technologies

Selected Publications

Papers with an asterisk(*) are based on research conducted outside of RIKEN.
  1. *Hiroya Matsuba, Kaustubh Joshi, Matti Hiltunen and Richard Schlichting.:
    "Airfoil: A Topology Aware Distributed Load Balancing Service"
    2015 IEEE 8th International Conference on Cloud Computing
  2. *Hiroya Matsuba, Matti Hiltunen, Kaustubh Joshi and Richard Schlichting.:
    "Discovering the Structure of Cloud Applications Using Sampled Packet Traces"
    2014 IEEE International Conference on Cloud Engineering
  3. *Atsushi Hori, Yoshikazu Kamoshida, Hiroya Matsuba, Kazuki Ohta, Takashi Yasui, Shinji Sumimoto and Yutaka Ishikawa.:
    "On-demand file staging system for Linux clusters"
    2009 IEEE International Conference on Cluster Computing
  4. *Kazuki Ohta, Hiroya Matsuba and Yutaka Ishikawa.:
    "Gather-arrange-scatter: Node-level request reordering for parallel file systems on multi-core clusters"
    2008 IEEE International Conference on Cluster Computing
  5. *Hiroya Matsuba and Yutaka Ishikawa.:
    "Single IP Address Cluster for Internet Servers"
    2007 IEEE International Parallel and Distributed Processing Symposium

Lab Members

Principal Investigator

Hiroya Matsuba
Team Leader

Core Members

Motohiko Matsuda
Research Scientist
Masatoshi Kawai
Postdoctoral Researcher

Contact information

7-1-26, Minatojima-minami-machi, Chuo-ku,
Kobe, Hyogo,
650-0047, Japan
Tel: +81-(0)78-569-5901
Fax: +81-(0)78-569-5941

Email: hiroya.matsuba [at]

Related links