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    RAL Tier1 Experiments Liaison Meeting

    → Europe/London
    Access Grid (RAL R89)

    Access Grid

    RAL R89
      • 13:38 → 13:39
        Major Incidents Changes 1m
      • 13:39 → 13:40
        Summary of Operational Status and Issues 1m
        Speakers: Brian Davies (Lancaster University (GB)), Darren Moore (Science and Technology Facilities Council STFC (GB))
        RT1EL-20200325.docx
        RT1EL-20200325.pdf
      • 13:40 → 13:41
        GGUS /RT Tickets 1m

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

      • 13:41 → 13:42
        Site Availability 1m

        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

      • 13:42 → 13:43
        Experiment Operational Issues 1m
      • 13:44 → 13:45
        VO-Liaison ATLAS 1m
        Speakers: James William Walder (Science and Technology Facilities Council STFC (GB)), Dr Tim Adye (Science and Technology Facilities Council STFC (GB))
        • Grand Unification: RAL GU queue now running (in parallel to usual queues).
          •  HC tests ok;

             
        • FTS failures:
          • https://helpdesk.gridpp.rl.ac.uk/Ticket/Display.html?id=250845 
            • Freiburg: Bad server / lost files ; will declare these temp. unavailable
            • Glasgow: Active discussions; likely to be blacklisted, or apply more manual data access control.
            • Other failures at smaller magnitude; will continue to monitor and chase up.

               
        • Preparations for Containers:
          •    /cvmfs/unpacked configured ?
            • https://helpdesk.gridpp.rl.ac.uk/Ticket/Display.html?id=251157
          •   Checked to be ok.

             
        • Wallclock limit now set by ATLAS to max possible time; 
          • Anecdotally suggests ~ 70% -> 90 % for job successes and 87% -> 92% in job wall time success.
          • Has been suggested that directio can be preferable for certain job types; 
            • Although mentioned that Echo might not prefer this mode ?
            • Can job-type specific staging be configured in the site?  

               
        • Stage-in timeouts remain highest failure rate:
          • Comparative tests once SSD WN are in production

         

         

      • 13:46 → 13:47
        VO Liaison CMS 1m
        Speaker: Katy Ellis (Science and Technology Facilities Council STFC (GB))
      • 13:48 → 13:49
        VO Liaison LHCb 1m
        Speaker: Raja Nandakumar (Science and Technology Facilities Council STFC (GB))
      • 13:52 → 13:53
        VO Liaison Others 1m
      • 13:53 → 13:54
        Experiment Planning 1m
      • 13:54 → 13:55
        Dune/protoDune 1m
      • 13:55 → 13:56
        Euclid 1m
      • 13:56 → 13:57
        SKA 1m
      • 13:57 → 13:58
        AOB 1m
      • 13:58 → 13:59
        Any other Business 1m
        Speakers: Brian Davies (Lancaster University (GB)), Darren Moore (Science and Technology Facilities Council STFC (GB))