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WLCG Management Board #329

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513/R-068 (CERN)

513/R-068

CERN

19
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Simone Campana (CERN)
Description

16:00 CERN/10:00 EDT/09:00 CDT

URL for the ZOOM call: https://cern.zoom.us/j/66011416092  (the passcode has been distributed by email)

To join by phone (see the dedicated support page):
1) dial your local ZOOM number (e.g. +41432107108) then enter the MB meeting ID  660 1141 6092 then #
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Email Distribution List: worldwide-lcg-management-board@cern.ch
Email List Archive: worldwide-lcg-management-board (requires CERN authentication)
Minutes: Management Board Meeting Minutes
Action List: MbActionList
See also the: WLCG Document Repository,  WLCG Web Site

WLCG Management Board
Zoom Meeting ID
66011416092
Host
Andrea Sciabà
Alternative hosts
Simone Campana, Maarten Litmaath
Useful links
Join via phone
Zoom URL
    • 16:00 → 16:10
      Minutes and Matters Arising 10m
      • WLCG/HSF workshop follow-up 10m
        Speaker: Simone Campana (CERN)

        WLCG Environmental Sustainability Forum: proposal to create a forum to regularly (monthly?) discuss the progress wrt environmental sustainability in WLCG. Possibility to co-host it in the OTF from time to time. Will allow to share information and align. Would also allow the TCB to track progress on some key areas (e.g. metrics) and set direction. At the workshop we called for names to be appointed as chairs. Please email your suggestions and nominations (including self nominations) to lcg.office@cern.ch   

        WLCG resource planning for HL-LHC: the Collaboration Board agreed to start the process to define a computing resource model for HL-LHC. This will include the ramp-up phase. Elements are: 1) the revised requirements and needs from the experiments, 2) the hardware technology and market trends 3) the role of Tiers, 4) the pledging model (more heterogeneous resource types, service classes, ..) and more. The agreement was reached following the discussions during the workshop and the input from the funding agencies at the last RRB. To start the process we will ask a small group of people to make an analysis of the current model, identify gaps and areas of improvement and, in a second phase, propose an initial set of changes, to be discussed broadly in WLCG. 

        WLCG 20th anniversary: the event will take place at CERN on the 8th of December. We have space for ~130 people and we need to ensure a good balance of representatives across regions, but also between the currently involved people and former colleagues. We are setting up a pre-registration process. We will collect in the next couple of months the list of people who are interested in attending. We will then send the confirmation just after summer.  

         

         

          

    • 16:10 → 16:15
      Action List Review 5m
    • 16:15 → 16:25
      WLCG Service Report 10m
      Speakers: Panos Paparrigopoulos (CERN), Maarten Litmaath (CERN)
      WLCG-svc-report-250520-v10.pdf
      WLCG-svc-report-250520-v10.pptx
    • 16:25 → 16:45
      TCB report and WLCG Technical Roadmap 20m
      Speakers: Alessandro Di Girolamo (CERN), James Letts (Univ. of California San Diego (US))
      250603 - WLCG LHCC Referees - WLCG Technical Coordination.pdf
      Draft - Structure - WLCG Tech Roadmap - for LHCC.pdf

      The 2025 WLCG/HSF Workshop [https://indico.cern.ch/event/1484669/] took place last week in Orsay, France. There were sessions on AI/ML, facility evolution, the token migration plan, analysis challenges, operations, DOMA, and many others. During the token migration session, a proposed roadmap for the token transition was presented and discussed, including a Token Grand Challenge in Q4 of 2026 in anticipation of DC27 which will include token-based authorization for jobs as well as storage.

      At the Workshop there was an open meeting of the WLCG Technical Coordination Board (TCB#4) on Wednesday afternoon [https://indico.cern.ch/event/1484669/timetable/#b-614773-wlcg-open-technical-c] where we had a presentation on combining the computing resource requirements from all four LHC experiments (as best they are known publicly at this time) and a second presentation on the flat-budget capacity evolution bands. For the latter topic in particular there was general consensus that the 20% line (the upper limit of the gray bands in HL-LHC resource projection plots, e.g.) was unrealistic and that the experiments and the WLCG should discuss agreeing on a new flat-budget envelope such as one centered on 10% year-over-year with upper and lower limits at 15% and 5%, respectively. Using a common set of assumptions for resource projection plots was a recommendation of the LHCC since the 2021 round of computing model reviews.

      The topical outline of the Technical Roadmap was then discussed and critiqued, with many helpful comments. After taking these comments into account, the outline [1] and accompanying slides [2] were circulated to the WLCG MB for comment at today’s meeting and eventual review by the WLCG LHCC Referees during LHCC Week [https://indico.cern.ch/event/1525772/] on June 3rd. Please send any additional comments to us by the end of this week. The slides and document are due to be submitted to the LHCC Referees by Tuesday, May 27th.

      [1] https://docs.google.com/document/d/1NGtjJY_SRa8HZ01DABWwO_sZ7jE10E0NpdA1OXbeVlw/edit?tab=t.0#heading=h.12huz52bz7y

      [2] https://docs.google.com/presentation/d/18CFLezOHSKIooqP37EIQ8Ty8x-p2qltudSaepYsFQyo/edit?usp=sharing

       

    • 16:45 → 16:50
      AOB 5m
      • Next MB Meeting: Tuesday 17 June 2025 1m
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