Week of 200106

WLCG Operations Call details

  • For remote participation we use the Vidyo system. Instructions can be found here.

General Information

  • The purpose of the meeting is:
    • to report significant operational issues (i.e. issues which can or did degrade experiment or site operations) which are ongoing or were resolved after the previous meeting;
    • to announce or schedule interventions at Tier-1 sites;
    • to inform about recent or upcoming changes in the experiment activities or systems having a visible impact on sites;
    • to provide important news about the middleware;
    • to communicate any other information considered interesting for WLCG operations.
  • The meeting should run from 15:00 Geneva time until 15:20, exceptionally to 15:30.
  • The SCOD rota for the next few weeks is at ScodRota
  • General information about the WLCG Service can be accessed from the Operations Portal
  • Whenever a particular topic needs to be discussed at the operations meeting requiring information from sites or experiments, it is highly recommended to announce it by email to wlcg-scod@cernSPAMNOTNOSPAMPLEASE.ch to allow the SCOD to make sure that the relevant parties have the time to collect the required information, or invite the right people at the meeting.

Best practices for scheduled downtimes



  • local: Julia (WLCG), Gavin (Compute), Maarten (ALICE), Ivan (ATLAS), Miro (Chair), Vincent (security)
  • remote: Darren (RAL). David (IN2P3), Di (TRIUMF), Dave (FNAL), Onno (NL-T1), Xin (BNL)

Experiments round table:

  • CMS reports ( raw view) -
    • Continued processing and production during break: ~200k cores used most of the time
    • No infrastructure issues
    • Best wishes for 2020!

  • ALICE -
    • Best wishes for 2020!
    • Normal activity levels in the last 3 weeks:
      • Lots of everything: MC, reconstruction, analysis trains, user jobs.
      • Almost no issues and nothing major.
      • Thanks to the sites!

  • LHCb reports ( raw view) -
    • happy 2020!
    • smooth operations during the Xmas break
      • main activity: MC production, working group productions
      • some pilot failures here and there
      • big thanks to PIC team for dealing with jobs failing to access data on Xmas day!

Sites / Services round table:

  • ASGC: NC
  • BNL: NTR
  • CNAF: NC
  • EGI: NC
  • IN2P3: Best wishes for 2020 to everyone! NTR.
  • KIT: NC
  • NL-T1: Best wishes for 2020 everyone! Nothing to report.
  • NRC-KI: NC
  • OSG: NC
  • PIC: NC
  • RAL: NTR
  • TRIUMF: Smooth operation in the holiday period. Though there was a GGUS ticket, 144638, about the checksum mismatch error, our storage admin checked and did not find file corruptions on our side.

  • CERN computing services: NTR
  • CERN storage services: NTR
  • CERN databases: NTR
  • Monitoring:
    • Final reports for the November 2019 availability sent around
    • Draft reports for the December 2019 availability sent around
  • MW Officer: NTR
  • Networks: NTR
  • Security: NTR


  • Best wishes for 2020!
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Topic revision: r17 - 2020-01-06 - MaartenLitmaath
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