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RAL Tier1 Experiments Liaison Meeting

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Access Grid (RAL R89)

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RAL R89
RAL Tier1 Experiments Liaison Meeting
Zoom Meeting ID
66811541532
Host
Alastair Dewhurst
Useful links
Join via phone
Zoom URL
    • 1
      Site Operations
    • 13:34
      Experiment Operational Issues
    • 2
      ATLAS Operations Report
      Speakers: Dr Brij Kishor Jashal (Rutherford Appleton Laboratory), Jyoti Prakash Biswal (Rutherford Appleton Laboratory)
      Brij ATLAS liason meeting notes
    • 3
      CMS Operations Report
      Speaker: Katy Ellis (Science and Technology Facilities Council STFC (GB))

      Apologies that Katy has a clash with an STFC all-day meeting today.

      Smooth running, not much to report. RAL is top of the efficiency plots among CMS T1s again this week!

      Reminder to self: Still to look at the /unmerged/ problem.

    • 4
      LHCb Operations Report
      Speaker: Alexander Rogovskiy (Rutherford Appleton Laboratory)

      Operational issues:

      • high failure rate for MC jobs is still present at RAL
        • Last night there were a lot of failures
        • Failures happened due to incorrect CPUTime estimation by the jobs
        • Some affected transformations are new, submitted after the (what was claimed to be) fix deployment
          • Reported to LHCb, investigating
      • DB outage at CERN on Monday
        • Resulted in lots of failed and completed jobs
      • Failed transfers from CNAF to RAL 
        • The issue was on the CNAF side (incorrect network setup), fixed now [GGUS:1002988]
    • 5
      ALICE Operations Report
      Speaker: Alexander Rogovskiy (Rutherford Appleton Laboratory)
      • The volume of excess data on ECHO is reducing
      • Ticket for mlsensor installation: GSTSM-756
    • 6
      LSST Operations Report
      Speakers: Thomas Birkett, Timothy Noble (Science and Technology Facilities Council STFC (GB))
      • LSST jobs being submitted from PanDA and HTCondor 
      • After last weeks data movement of 15TB little has moved to RAL this week - evening it out to the usual 8TB per week:
      • But 81TB moved to SLAC from IN2P3:
    • 14:00
      Tier-1 Projects
    • 7
      XRootD Development
      Speakers: Alexander Rogovskiy (Rutherford Appleton Laboratory), Jyothish Thomas (STFC)
    • 8
      Utilizing GPUs
      Speakers: Dr Brij Kishor Jashal (Rutherford Appleton Laboratory), Thomas Birkett
    • 14:25
      AOB
    • 9
      Summary of Operational Status and Issues
      Speakers: Brian Davies (Science and Technology Facilities Council STFC (GB)), Darren Moore, Thomas Birkett
      Weekly Report 10 June 2026.docx
      Weekly Report 10 June 2026.pdf
    • 10
      Any other Business
      Speakers: Brian Davies (Science and Technology Facilities Council STFC (GB)), Darren Moore