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RAL Tier1 Experiments Liaison Meeting

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Access Grid (RAL R89)

Access Grid

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: Brij Kishor Jashal (Rutherford Appleton Laboratory), Jyoti Prakash Biswal (Rutherford Appleton Laboratory)
    • 3
      CMS Operations Report
      Speaker: Katy Ellis (Science and Technology Facilities Council STFC (GB))

      Not much to report. DNS issues last Thursday caused some red on the SAM tests for Echo endpoints. Both Thursday and Friday saw some 'gaps' in the tests themselves - turned out that ETF needed restarting at CERN again. Have got corrections applied to the availability metrics for this second issue and requested the person in charge of the tests to please investigate why they sometimes fail to run. Katy anticipated RAL T1 going into drain over the weekend and prevented it. 

      Jobs and transfers - business as usual.

    • 4
      LHCb Operations Report
      Speaker: Alexander Rogovskiy (Rutherford Appleton Laboratory)
      jobs.png
      transfers_from.png
      transfers_to.png

      LHCb issues:

      • Optimizer problems at CERN during the weekend => drain
      • SandboxStore problems today => drain again + many rescheduled jobs

      RAL issues:

      • DNS issues last Thursday resulted in a handful of failed uploads to ECHO from outside RAL
        • Minimal impact
      • ETF cvmfs tests were intermittently failing at RAL
        • IPv6 ACL was missing for squids, fixed now
    • 5
      ALICE Operations Report
      Speaker: Alexander Rogovskiy (Rutherford Appleton Laboratory)

      Tom B noticed that ALICE jobs sometimes end up in the GPU queue. Turned out to be ETF tests -- due to a bug in the setup, the queue attribute was missing in the JDL. That resulted in random selection of the queue on submission. Fixed now (see GGUS:1001830 for details)

    • 6
      LSST Operations Report
      Speakers: Mathew Sims, Timothy Noble (Science and Technology Facilities Council STFC (GB))
      • dp2_prep dataset
        • Changes tracked finally from US, applied all changes needed
        • Some issues when tried to run jobs still
      • butler database
        • Migrated to proxmox and butler db moved to new db
        • Testing from VOBox shows all is correct - attempted to run jobs from dp2_prep but failed

       

      Jobs: Some jobs from LSST to verify multisite workflows - dp2_prep not attempted to be run until today

       

      Data Movement:
          No data movement to RAL over last week

    • 14:00
      Tier-1 Projects
    • 7
      Anatares Upgrade
      Speakers: George Patargias, Thomas Byrne
    • 8
      XRootD Development
      Speakers: Alexander Rogovskiy (Rutherford Appleton Laboratory), Jyothish Thomas (STFC)
    • 9
      Utilizing GPUs
      Speakers: Jyoti Prakash Biswal (Rutherford Appleton Laboratory), Thomas Birkett
    • 14:25
      AOB
    • 10
      Summary of Operational Status and Issues
      Speakers: Brian Davies (Science and Technology Facilities Council STFC (GB)), Darren Moore
      Weekly Report 18 February 2026.docx
      Weekly Report 18 February 2026.pdf
    • 11
      Any other Business
      Speakers: Brian Davies (Science and Technology Facilities Council STFC (GB)), Darren Moore