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Grid Operation at Tokyo Tier-2 Centre for ATLAS

  • Hiroyuki Matsunaga
  • Tadaaki Isobe
  • Tetsuro Mashimo
  • Hiroshi Sakamoto
  • Ikuo Ueda
Conference paper

Abstract

International Centre for Elementary Particle Physics, the University of Tokyo, has been involved in the Worldwide LHC Computing Grid since 2003. After extensive R&D experience of the PC computing farm, disk and tape storage systems, network technology and the integration of these components, it is now operating a regional centre for the ATLAS data analysis. The regional centre includes an ATLAS Tier-2 site which is running the gLite middleware developed by the Enabling Grids for E-sciencE (EGEE) project. One of the biggest challenges at the regional centre is efficient data transfer between the Tier-2 site in Tokyo and other sites, in particular the associated Tier-1 site in France, because the large round trip time due to the long distance makes it difficult to transfer data at a high rate. We have been studying to achieve a good performance of the data transfer, and some results of network tests and ATLAS data transfer are described. Hardware and software components and the operational experience are also reported in this article.

Keywords

Large Hadron Collider Local Facility Round Trip Time Data Transfer Rate Network Interface Card 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

  1. [1]
    M. Ishino et al., Nucl. Instr. Meth. A 534, 70 (2004).Google Scholar
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    M. Branco et al, J. Phys. Conference Series 119, 062017 (2008).CrossRefGoogle Scholar

Copyright information

© Springer-Verlag US 2010

Authors and Affiliations

  • Hiroyuki Matsunaga
    • 1
  • Tadaaki Isobe
    • 1
  • Tetsuro Mashimo
    • 1
  • Hiroshi Sakamoto
    • 1
  • Ikuo Ueda
    • 1
  1. 1.International Centre for Elementary Particle Physics, The University of TokyoTokyoJapan

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