• CentOS7 DPM Lancs

    • Next week is downtime for cluster , during which our worker nodes will all be reinstalled and a new backed end shared filesystem will be back in place
    • Plan is to set up an ARC CE by lunchtime tomorrow as the old SL6 CREAM CE will likely stop being able to talk to our Cluster after next week’s downtime.
    • Please can atlas UK be ready to stick new endpoints in to AGIS for us.

  • CentOS7 - Sussex

    • Awaiting updating

  • Glasgow Ceph storage

    • RAL xrootd was tried
      • Identified that some performance tuning options, when under high loads caused too many concurrent threads and truncation of the cached files
    • Moved back to on disk cache (on SSDs)
    • Getting data to the jobs looks much better now.
    • Stage-ing back from jobs and redirection is next, to work between all three caches (one currently running)
    • Ceph-tuning for timeouts; stability improving; awaiting updated nautilaus for fixes to some current work-arounds
    • Bandwith looks good and is maxing out the gridFTP box.
    • Different versions of xroot on the various services: gateway 4.12.2, cache 4.11.3; aim to upgrade when possible

  • Grand Unified queues

    • Awaiting SHEF