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WLCG/HSF Workshop 2025

5โ€“9 May 2025
IJCLab, Paris
Europe/Paris timezone

Contact

Session

Plenary

5 May 2025, 12:00
Auditorium P. Lehmann, Building 200 (IJCLab, Paris)

Auditorium P. Lehmann, Building 200

IJCLab, Paris

Domaine Universitaire Building 200 91400 Orsay

Conveners

Plenary: Opening

  • Michel Jouvin (Universitรฉ Paris-Saclay (FR))
  • Simone Campana (CERN)

Plenary: AI and WLCG/HSF

  • Alessandro Di Girolamo (CERN)
  • Paul James Laycock (Universite de Geneve (CH))

Plenary: Analysis at scale and analysis challenges

  • Alessandra Forti (The University of Manchester (GB))
  • Nicole Skidmore (University of Warwick)

Plenary: Environmental Sustainability

  • Caterina Doglioni (The University of Manchester (GB))
  • David Britton (University of Glasgow (GB))

Plenary: Closing

  • There are no conveners in this block

Plenary: Registration + Welcome Drink

  • There are no conveners in this block

Presentation materials

There are no materials yet.

  1. 24. Welcome in Orsay
    Michel Jouvin (Universitรฉ Paris-Saclay (FR)), Valerie CHAMBERT
    05/05/2025, 13:30
  2. 25. Introduction - WLCG
    David Britton (University of Glasgow (GB)), Simone Campana (CERN), Tommaso Boccali
    05/05/2025, 13:45
  3. 26. Introduction - HSF
    Eduardo Rodrigues (University of Liverpool (GB)), Paul James Laycock (Universite de Geneve (CH))
    05/05/2025, 14:10
  4. 43. AI & WLCG/HSF - scope of the session
    Alessandro Di Girolamo (CERN), Paul James Laycock (Universite de Geneve (CH))
    05/05/2025, 14:35
    Talk
  5. 44. AI and Facilities
    Ilija Vukotic (University of Chicago (US))
    05/05/2025, 14:40
  6. 45. AI/ML for Physics use cases
    Tommaso Boccali
    05/05/2025, 15:45
  7. 46. Heterogeneous resources and experiment software
    Paolo Calafiura (Lawrence Berkeley National Lab. (US))
    05/05/2025, 16:20
  8. 47. Facility view: Heterogeneous resources deployment and usage
    Ben Jones (CERN), Rodney Walker (Ludwig Maximilians Universitat (DE))
    05/05/2025, 16:55
  9. 48. Discussion
    05/05/2025, 17:20
  10. 55. Responding Faster: Lessons from a security incident
    Jose Carlos Luna Duran (CERN)
    06/05/2025, 13:45

    NOTE: this contribution was actually part of the Facilities session, which overflowed into the afternoon.

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  11. 51. User experience
    Albert Gyorgy Borbely (University of Glasgow (GB))
    06/05/2025, 14:15

    A users perspective on typical problems faced throughout an analysis cycle, the ad-hoc solutions implemented, and the limited view a user has of the Grid and how it is displayed to them.

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  12. 33. CMS analysis facility contribution
    Oksana Shadura (University of Nebraska Lincoln (US))
    06/05/2025, 14:30
    Talk
  13. 32. ATLAS analysis facility contribution
    Emma Torro Pastor (Univ. of Valencia and CSIC (ES))
    06/05/2025, 14:45
    Talk
  14. 8. Understanding the scale of HL-LHC physics analyses
    Alexander Held (University of Wisconsin Madison (US)), Oksana Shadura (University of Nebraska Lincoln (US))
    06/05/2025, 15:00
    Analysis at scale
    Talk

    The existing roadmaps and computing model plans from ATLAS and CMS for the HL-LHC area are primarily focused on the centralized aspect of computing: those steps that lead up to sets of files made available to physicists for analysis. The general approaches, resources used, and software frameworks for the area of โ€œend-user physics analysisโ€, which starts from those files, are much less clearly...

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  15. 34. LHCb analysis facility contribution
    Dr Nicole Skidmore (University of Warwick)
    06/05/2025, 16:00
  16. 49. ALICE analysis facility contribution
    Maarten Litmaath (CERN)
    06/05/2025, 16:15
  17. 35. Exploiting extremely-parallel technologies for future large-scale physics analyses demands
    Jonas Rembser (CERN)
    06/05/2025, 16:30

    The HEP experiments and community face complex computing and storage requirements which are expected to increase by several factors with the advent of HL-LHC. By the end of Run3, the machine will have accumulated roughly 10% of the total dataset. These data, stored in the ROOT data format, are then analysed by the various experiment communities, with varying levels of coordination and...

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  18. 50. Proposal for Interdisciplinary Analysis Facilities
    Thomas Hartmann (Deutsches Elektronen-Synchrotron (DE))
    06/05/2025, 16:50

    Next to HEP other scientific communities have emerged producing large amounts of data and requier correspondingly processing power. While Analysis Facilities can be optimized to specific workflows, the underlying risk is a highly specialised and inflexible lock-in. By aiming for an interdisciplicary approach concentrating on established industry standards and establishing generic interfaces,...

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  19. 19. Analysis at the HL-LHC: Data Delivery, ServiceX, and Addressing Our Analysis Challenges
    Gordon Watts (University of Washington (US))
    06/05/2025, 17:05
    Analysis at scale
    Talk

    As the HL-LHC era approaches, the scale and complexity of data present challenges for analysis workflows within ATLAS and other HL-LHC experiments. This contribution reports on recent developments in ServiceX, a cross experiment utility, and its role as a data delivery and transformation service within the analysis ecosystem. Designed to bridge the gap between centrally produced datasets and...

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  20. 67. Introduction
    Caterina Doglioni (The University of Manchester (GB)), David Britton (University of Glasgow (GB))
    08/05/2025, 09:00

    Talk to set the scene and summarise the actions from the WLCG environmental sustainability workshop in December 2024: https://indico.cern.ch/event/1450885/timetable/

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  21. 9. Power Accounting in Heterogeneous Compute Clusters
    Emanuele Simili
    08/05/2025, 09:18
    Environmental sustainability
    Talk

    Energy efficiency is a critical concern for WLCG operations. We present a proof-of-concept for dynamic power accounting in our heterogeneous compute clusters at ScotGrid Glasgow. Our approach leverages real-time metrics from Prometheus to attribute energy consumption to individual Virtual Organizations (VOs) based on actual core usage. By integrating hardware-specific power efficiency data,...

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  22. 75. Enhancing Job Monitoring with Power Consumption Metrics
    Domenico Giordano (CERN), Natalia Diana Szczepanek (CERN)
    08/05/2025, 09:36
    Environmental sustainability
    Talk

    To support the sustainability of WLCG compute infrastructure, we propose a strategy to extend the current job monitoring system to include energy consumption data. Currently, WLCG monitoring systems primarily focus on traditional job metrics such as CPU time, memory usage, runtime, and failure rates.
    However, they do not capture job-level power consumption, as this data is typically managed...

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  23. 80. Energy saving measures during peak summer at DESY
    Thomas Hartmann (Deutsches Elektronen-Synchrotron (DE))
    08/05/2025, 09:54
    Environmental sustainability
    Talk

    This contribution will detail initial plans for reducing peak day loads at the DESY computing center during the summer.

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  24. 76. GreenDIGIT: updates from the WLCG Environmental Sustainability Workshop
    Gergely Sipos
    08/05/2025, 10:07
    Environmental sustainability

    GreenDIGIT (https://greendigit-project.eu/) is a TECH-01-01 Horizon Europe project that started in March 2024 to pursue environmental sustainability within digital services and service ecosystems that research infrastructures (RIs) rely on. GreenDIGIT brings together institutes from 4 digital RIs: EGI, SLICES, EBRAINS, and SoBigData to address the pressing need for sustainable practices in...

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  25. 68. Discussion on power accounting benchmarks part 1: sites perspective
    08/05/2025, 10:20
  26. 16. Green software in HEP: benchmarks and studies on MC generators
    Luis Villar (University of Manchester), Tobias Fitschen (The University of Manchester (GB))
    08/05/2025, 11:10
    Environmental sustainability
    Talk

    In this talk, we will describe the studies undertaken at the University of Manchester to estimate and improve the energy efficiency of computing hardware and software used by students and researchers.

    The goal of these studies is to build an understanding of the environmental impact of paticle physics research focusing on two fronts:
    1) the carbon cost of the hardware uses for high power...

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  27. 20. Environmental impact, carbon and sustainability of computing in the ATLAS experiment
    Rodney Walker (Ludwig Maximilians Universitat (DE))
    08/05/2025, 11:30
    Environmental sustainability
    Talk

    In this contribution, we will describe the efforts within the ATLAS experiment to evaluate and mitigate various aspects of the environmental impact of ATLAS computing sites, such as building awareness in the experiment community, adjusting aspects of the computing policy, and modifications of data center configurations, either in ways that take advantage of particular features of ATLAS work or...

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  28. 81. Environmental impact of computing in LHCb
    Francesco Sborzacchi (CERN), Henryk Giemza (National Centre for Nuclear Research (PL)), Henryk Giemza (National Centre for Nuclear Research (PL))
    08/05/2025, 11:45

    This contribution will present the activities in LHCb online and offline towards environmentally sustainable computing.

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  29. 69. Discussion on power accounting and beyond part 2: inputs from sites, users and experimental collaborations
    08/05/2025, 11:55
  30. 61. Computing Challenges for the Einstein Telescope
    Paul James Laycock (Universite de Geneve (CH))
    09/05/2025, 09:30
  31. 62. Recap and next steps - DOMA and WLCG Ops
    Katy Ellis (Science and Technology Facilities Council STFC (GB)), Panos Paparrigopoulos (CERN)
    09/05/2025, 09:50
  32. 63. Recap and next steps - WLCG/HSF Sustainability
    Caterina Doglioni (The University of Manchester (GB)), David Britton (University of Glasgow (GB))
    09/05/2025, 10:05
  33. 64. Recap and next steps - HSF
    Graeme A Stewart (CERN)
    09/05/2025, 10:50
  34. 65. Recap and next steps - WLCG Technical Coordination
    09/05/2025, 11:05
  35. 66. Recap and next steps - Analysis at scale
    Alessandra Forti (The University of Manchester (GB)), Dr Nicole Skidmore (University of Warwick)
    09/05/2025, 11:20
  36. 84. Some final words ...
    09/05/2025, 11:35
  37. 36. Discussion
    Alessandra Forti (The University of Manchester (GB)), Dr Nicole Skidmore (University of Warwick)
Building timetable...