RAL Tier1 Experiments Liaison Meeting

Europe/London
Access Grid (RAL R89)

Access Grid

RAL R89

Videoconference
RAL Tier1 Experiments Liaison Meeting
Zoom Meeting ID
66811541532
Host
Alastair Dewhurst
Useful links
Join via phone
Zoom URL
    • 12:38 12:39
      Major Incidents Changes 1m
    • 12:39 12:40
      Summary of Operational Status and Issues 1m
      Speakers: Brian Davies (Lancaster University (GB)), Darren Moore (Science and Technology Facilities Council STFC (GB))
    • 12:40 12:41
      GGUS /RT Tickets 1m

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

    • 12:41 12:42
      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

    • 12:42 12:43
      Experiment Operational Issues 1m
    • 12:44 12:45
      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))
    • 12:45 12:46
      VO Liaison CMS 1m
      Speaker: Katy Ellis (Science and Technology Facilities Council STFC (GB))

      Number of running cores has dropped, which is very unusual. Normally CMS are running close to 8k cores all the time, which is the cap since Sept 2021. Wondering if this is related to...

      ...Big gaps have been seen in the ARC-CE tests. This is not unusual, but usually all 5 CEs don't have gaps simultaneously. If even one CE has a green test in a time period, the status will be green. Seeing not only gaps in running the test, but also gaps in completing the test, e.g. the final test ('WN-Analysis') doesn't get reported on. My guess is that this times out.  It's making the SAM test status red on days this week. Drain is still overridden otherwise would be in drain. Will talk to Tom Birkett again about this.

      CMS are going to transfer 150-250TB of data from CERN tape to Antares. This will be interesting as the path may be:

      CERN tape -> CERN EOS -> Echo -> Antares (e.g. double multihop)...which will be interesting. 

      Have been asked to test 'Shoveler' which is xrootd monitoring. 

      Job performance is reasonable.

    • 12:50 12:51
      VO Liaison LHCb 1m
      Speaker: Raja Nandakumar (Science and Technology Facilities Council STFC (GB))
    • 12:55 12:58
      VO Liaison LSST 3m
      Speaker: Timothy John Noble (Science and Technology Facilities Council STFC (GB))
    • 13:00 13:01
      VO Liaison Others 1m
    • 13:05 13:06
      Experiment Planning 1m
    • 13:10 13:11
      Euclid 1m
    • 13:15 13:16
      SKA 1m
    • 13:20 13:30
      Dune/protoDune 10m
    • 13:30 13:31
      AOB 1m
    • 13:35 13:36
      Any other Business 1m
      Speakers: Brian Davies (Lancaster University (GB)), Darren Moore (Science and Technology Facilities Council STFC (GB))