Requirements as a Regional Computing Center

• Software Environment

  • Software environment of the CCJ needed be compatible to the PHENIX software environment at the RHIC Computing Facility (RCF) at BNL

    • AFS (/afs/rhic) - daily mirroring and accessed through NFS from Linux
    • Objectivity/DB : Local AMS server (regularly update DB)
    • Batch queuing system: Load Sharing Facility (LSF 4.1)
    • RedHat Linux 6.1 (Kernel 2.2.19 with nfsv3 enabled), gcc-2.95.3 etc.
    • Veritas File System (Journaling file system on Solaris): free from fsck for ~TB disk

• Data Accessibility

  • Need exchange data of 225 TB/year to BNL RCF

    • Most part of the data exchange is carried out with SD3 tape cartridges

      • Data duplicating Facility at both (10 MB/s performance by airbone)
    • Some part of the data exchange is carried out over the Wide Area Network (WAN)

      • CC-J will use Asia-Pacific Advanced Network (APAN) for US-Japan connection

        • http://www.apan.net/
      • APAN has currently ~100 Mbps bandwidth for Japan-US(STAR TAP) connection

        • 3 MB/s transfer performance was obained using bbftp protocol

ëOÇÃÉXÉâÉCÉh

éüÇÃÉXÉâÉCÉh

ç‰èâÇÃÉXÉâÉCÉhÇŠñþÇÈ

ÉOÉâÉtÉBÉbÉNÉXÇÃï\é¶