WLCG Open Technical Forum (OTF) #9

Mar 24, 2026, 1:00 PM → Mar 25, 2026, 5:00 PM Europe/Zurich

31/S-028 (CERN)

Alessandro Di Girolamo (CERN), James Letts (Univ. of California San Diego (US))

 

 

Welcome to the WLCG Open Technical Forum (OTF).

The WLCG Technical Coordination Board (TCB) is responsible for the technical evolution of WLCG services in line with the needs of the experiments and the capabilities of the infrastructure providers. The TCB defines a multi-year roadmap for such evolution and is responsible for its implementation. The TCB achieves these goals with a bottom-up approach through an Open Technical Forum (OTF) which welcomes the participation of all contributors to the technical evolution in the WLCG community.

Organizational matters:

• If you require a visitor pass, please request via the registration form.
• Please register only if you plan to attend in person.
• Coffee/Tea will be served starting 30mins before the meeting (from 14:30 on Tuesday, and from 13:30 on Wednesday)  

 

Tue, March 24

2:00 PM → 2:30 PM Welcome coffee/tea

2:30 PM → 2:40 PM Introduction

Speakers: Alessandro Di Girolamo (CERN), James Letts (Univ. of California San Diego (US))

2:45 PM → 3:10 PM XRootD: Status, Challenges and Plans toward HL-LHC

Follow up of the OTF#7 https://indico.cern.ch/event/1542060/timetable/?view=standard#b-621125-wlcg-open-technical-f
- Overview of the status
- gaps identified in the current situation (including XRootD monitoring)
- challenges foreseen
- Plans for the coming years, including concrete milestones along the way to solving the major problems observed.

Speakers: Andrew Bohdan Hanushevsky (SLAC National Accelerator Laboratory (US)), Guilherme Amadio (CERN)

3:25 PM → 3:35 PM XRooD understanding of experiments (and communities) needs

based on XRootD discussions, GitHub, plus the XRootD Collaboration Board https://indico.cern.ch/event/1510817/

Speakers: Andrew Bohdan Hanushevsky (SLAC National Accelerator Laboratory (US)), Guilherme Amadio (CERN)

3:45 PM → 5:00 PM Experiments and Root - inputs

Delta wrt the XRootD Collaboration Board (Feb 2025) https://indico.cern.ch/event/1510817/
Input needed also toward HL-LHC

5:10 PM → 5:40 PM XRootD - next steps

Discussion on the concrete next steps

Speakers: Alessandro Di Girolamo (CERN), James Letts (Univ. of California San Diego (US))

Wed, March 25

1:30 PM → 2:00 PM Welcome coffee/tea - N.B. room 6/2-004

2:00 PM → 2:10 PM Introduction

Speakers: Alessandro Di Girolamo (CERN), James Letts (Univ. of California San Diego (US))

2:15 PM → 2:45 PM the new WLCG Accounting framework - PEAR and AUDITOR

Speakers: Alastair Dewhurst (Science and Technology Facilities Council STFC (GB)), Julia Andreeva (CERN), Panos Paparrigopoulos (CERN)

3:30 PM → 4:00 PM CRIC (Computing Resource Information Catalogue) - status and plans toward HL-LHC

Speaker: Panos Paparrigopoulos (CERN)