US ATLAS Computing Facility

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Bi-weekly Facilities meeting
Robert William Gardner Jr
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    • 13:00 13:10
      WBS 2.3 Facility Management News 10m
      Speakers: Eric Christian Lancon (BNL), Robert William Gardner Jr (University of Chicago (US))

      Apologies: Eric, Doug, Fred

    • 13:10 13:20
      OSG-LHC 10m
      Speakers: Brian Lin (University of Wisconsin), Matyas Selmeci

      OSG 3.5.5 + 3.4.39

      • Targeted for next week
      • New blahp version
      • XRootD 4.11.0 + plugins
      • Singularity 3.4.2 in 3.4 (3.4.2 should be available shortly for 3.5 via EPEL)
      • Minor XCache and standalone XRootD fixes


      • OSG Software and Release are interested in increasing engagement for community testing
      • BOINC accounting: we would like to see a short technical proposal for how US-ATLAS would like to account for BOINC jobs
    • 13:20 14:00
      Topical Report
      • 13:20
        NET2 Evolution 15m
        Speakers: Prof. Saul Youssef (Boston University (US)), Saul Youssef (Unknown)
    • 13:40 14:25
      US Cloud Status
      • 13:40
        US Cloud Operations Summary 5m
        Speaker: Mark Sosebee (University of Texas at Arlington (US))
      • 13:45
        BNL 5m
        Speaker: Xin Zhao (Brookhaven National Laboratory (US))
      • 13:50
        AGLT2 5m
        Speakers: Philippe Laurens (Michigan State University (US)), Dr Shawn McKee (University of Michigan ATLAS Group), Prof. Wenjing Wu (Computer Center, IHEP, CAS)

            Tickets: 3 still open, only 1 still relevant

            - 142370 was likely not AGLT2-specific and resolved by dCache update.
             We think this ticket can be closed

            - 143505 transfer problems to  BEIJING-LCG2 and IEPSAS-Kosice
             two separate problems or symptoms. Transfer rates still bad.
             We had investigated the examples flagged in this ticket
             Beijing: No byte transferred. Not clear why
             Slovakia: 1h timeout on 7G file which would likely otherwise complete

           - 143575 errors from one particular WN which was rebuilt
             We think it should be closed


             dCache updated to 5.2.6-1


           - 2 of the new R740XD2 are in production and we are draining
             older storage for planned retirement

           - 4 Formulus Black Worker nodes are being installed for use with ForsaOS
             which will run 72 HTcores out of 512G of memory with nVME storage.
             We will compare 2 built with ForsaOS and 2 as "conventional" SL7.
             Those were purchased with UM Tier3 funds but will also run Tier2 jobs.

      • 13:55
        MWT2 5m
        Speakers: Judith Lorraine Stephen (University of Chicago (US)), Lincoln Bryant (University of Chicago (US))
        • Fixed IPv6 issues from UChicago 
        • Submitted POs for new UChicago equipment purchase
        • Lost file recovered to MWT2_DATADISK
        • Ongoing debugging re GGUS ticket 143719
          • We've provided feedback, but still no response from anyone upstream
          • Further steps needed?
      • 14:00
        NET2 5m
        Speaker: Prof. Saul Youssef (Boston University (US))


        Current issues:  "Let's encrypt issue on NESE hosts."  

      • 14:05
        SWT2 5m
        Speakers: Dr Horst Severini (University of Oklahoma (US)), Kaushik De (University of Texas at Arlington (US)), Mark Sosebee (University of Texas at Arlington (US)), Patrick Mcguigan (University of Texas at Arlington (US))

        UTA -

          Facility electrical work has forced a downtime on UTA_SWT2

          Tracking problems with event index jobs at SWT2_CPB


        OU -

          Nothing to report, running well

      • 14:10
        HPC Operations 5m
        Speaker: Doug Benjamin (Duke University (US))
      • 14:15
        Analysis Facilities - SLAC 5m
        Speaker: Wei Yang (SLAC National Accelerator Laboratory (US))
      • 14:20
        Analysis Facilities - BNL 5m
        Speaker: William Strecker-Kellogg (Brookhaven National Lab)
    • 14:25 14:30
      AOB 5m