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    RAL Tier1 Experiments Liaison Meeting

    → Europe/London
    Access Grid (RAL R89)

    Access Grid

    RAL R89
    Description

    Please attend via the following Zoom meeting:

    https://ukri.zoom.us/j/98562731547?pwd=UU9Wb2xCL05tWmROT1h6SUlWdUJ3dz09

      • 12:38
        Major Incidents Changes
      • 1
        Summary of Operational Status and Issues
        Speakers: Brian Davies (Lancaster University (GB)), Darren Moore (Science and Technology Facilities Council STFC (GB))
        RT1EL-20210120.docx
        RT1EL-20210120.pdf
      • 2
        GGUS /RT Tickets

        https://tinyurl.com/T1-GGUS-Open
        https://tinyurl.com/T1-GGUS-Closed

      • 3
        Site Availability

        https://lcgwww.gridpp.rl.ac.uk/utils/availchart/

        https://cms-site-readiness.web.cern.ch/cms-site-readiness/SiteReadiness/HTML/SiteReadinessReport.html#T1_UK_RAL

        http://hammercloud.cern.ch/hc/app/atlas/siteoverview/?site=RAL-LCG2&startTime=2020-01-29&endTime=2020-02-06&templateType=isGolden

      • 12:42
        Experiment Operational Issues
      • 4
        VO-Liaison ATLAS
        Speakers: James William Walder (Science and Technology Facilities Council STFC (GB)), Dr Tim Adye (Science and Technology Facilities Council STFC (GB))

        * ATLAS in drain since 0500 (no new jobs since around 0330):
           AREX issue?  Resolved 1100?
        - Follow up on why it affects all CE's 

        * RAL (unified queue) subsequently (and currently) set into TEST by HC:
        """Diag from worker : Condor HoldReason: None ; Condor RemoveReason: removed by SYSTEM_PERIODIC_REMOVE due to job remote status outdated time exceeded (3600*4)."""


         

      • 5
        VO Liaison CMS
        Speaker: Katy Ellis (Science and Technology Facilities Council STFC (GB))

        CMS went into drain a week ago, this was fixed on Thursday by reverting a change that was originally made in Oct, but it's still a mystery what happened exactly.

        https://ggus.eu/index.php?mode=ticket_info&ticket_id=150207

        I am seeing some odd dips in running cores in the last 2 days plus today. We appear to drop 10-20% of cores in the monit-grafana, however this is not observed in Vande. 

        Otherwise, we are running at 400% of pledge due to ATLAS problems with ARC-CE 01 overnight.

        I am seeing SAM test failures appearing on all ARC-CEs, of type xrootd. Possibly related to getting files from Echo? I need to investigate. 

        The debug/loadtest tests for the tape have stopped again. I can see in the Site Readiness than the FTS status has been corrected. We are still receiving no new transfers to tape as we are at pledge. I asked if any deletions could be done (in anticipation of the tape migration to Spectra in about one month) but no reply yet. I also provided the file dump to those doing the consistency checking, but no response either.

        No update on the network changes planned by DI.

      • 6
        VO Liaison LHCb
        Speaker: Raja Nandakumar (Science and Technology Facilities Council STFC (GB))
      • 7
        VO Liaison Others
      • 12:53
        Experiment Planning
      • 8
        Dune/protoDune
      • 9
        Euclid
      • 10
        SKA
      • 12:57
        AOB
      • 11
        Any other Business
        Speakers: Brian Davies (Lancaster University (GB)), Darren Moore (Science and Technology Facilities Council STFC (GB))