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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-20200520.docx
        RT1EL-20200520.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))
        atlas_may20.pdf
      • 13:46 → 13:47
        VO Liaison CMS 1m
        Speaker: Katy Ellis (Science and Technology Facilities Council STFC (GB))

        Following the stopping of F@H jobs, CMS efficiency went up. Currently doing similar efficiencies to other CMS T1s!

        SAM test monitoring stopped reporting for a while but this was a CMS issue. Results are in place now.

      • 13:48 → 13:49
        VO Liaison LHCb 1m
        Speaker: Raja Nandakumar (Science and Technology Facilities Council STFC (GB))

        LHCb :

        1. ECHO file access issue :
          • Believe RAL test system WNs finally in place since earlier today
            • To be confirmed tomorrow
          • Waiting for system to settle down before starting making further changes on Friday
          • Monitoring url for LHCb view of test jobs
            • https://lhcb-project-dirac.web.cern.ch/lhcb-project-dirac/EchoTestMonitor/RALEchoTestMonitoring.html?date=2020-04-30
            • Note the date at the end of the above URL. It can be any date after 23 Apr 2020 to yesterday
        2. LHCb DIRAC issues
          • Briefly mentioned last week
          • Affected MC reconstruction productions which were producing RunI MC
            • Needs singularity to emulate sl5 for trigger code frozen at that time
            • Caused by DIRAC bug introduced on 12 May 2020
          • Finally fixed on 19 May 2020
        3. LHCb tape accesses over the next year :
          • Believe we have done all the major staging to be done for the next year
            • https://its.cern.ch/jira/browse/LBOPG-101
          • We do not (usually) do any deletions from tape
          • We assume sporadic staging is okay
        4. Number of LHCb jobs at RAL fell on Monday (~x2)
          • Possibly due to batch farm work being done
          • Also possibly LHCbDIRAC issues
            • Hard to disentangle the two
          • Now slowly going back to normal
        5. VO-box
          • An issue with LHCbDirac software being investigated
          • Upcoming(?) sl7 update

        DUNE:

        1. ETF tests : https://etf-dune-preprod.cern.ch/etf/check_mk/index.py?start_url=%2Fetf%2Fcheck_mk%2Fview.py%3Fview_name%3Dallhosts
          • Following up with sites
            • First WLCG as easiest
          • Technical details being teased out
        2. Few jobs running on the grid in DUNE
          • A few ten-s or jobs all across fermigrid
      • 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))