• Attending
• News, general matters, announcements
  • HSF Seminar Series and Compute Accelerator Forum
  • Steering Group
  • HSF Affiliated Projects and Software
• Activities Updates
  • Software Training
    • Ideas for upcoming trainings:
    • Future Events:
  • Event generators
  • Detector Simulation
  • Reconstruction and Software Triggers
  • PyHEP
  • JuliaHEP
• AOB
  • Physical Constants / HEPdata Library
  • Next Meeting
  • Chair This Meeting 👇

Attending

Present/Contributing: Eduardo Rodrigues, Tommaso Lari, Ianna Osborne, Graeme Stewart, Claire Antel, Inês Ochoa, Maarten van Veghel, Liz Sexon-Kennedy, Luke Kreczko

Apologies/Contributing: Michel Villanueva

News, general matters, announcements

HSF Seminar Series and Compute Accelerator Forum

Planned HSF seminars:

• 29th Oct: European Strategy Report: Inputs, Impressions, Venice Open Symposium Highlights
• Dec 3rd: HS3, TBC

Others in the works:

• Seminar on OpenData organised by Trig & Reco SW AA
• 2nd in series on AI-assisted SW tools organised by software tools & packaging
• Seminar from creator of mp-units (supports units and constants in C++, see AOB) - still to be arranged

(Thanks to the activity groups for coming to us with seminar ideas and speakers!)

HSF seminar conveners are reachable at hsf-seminar-conveners@googlegroups.com.

Compute & Accelerator forums:

• We had a meeting on Error estimation for floating point operations via automatic differentiation just yesterday
• 12 Nov: A Formal but Pragmatic Foundation for General-Purpose Operating Systems

Please send your suggestions for next seminars.

Steering Group

The first meeting post Summer took place last week. See the minutes.

We discussed in particular:

• The HSF budget we collect from our participation in the GSoC programme. This can be used for HSF related activities.
• Idea to create a community repository for bibliographic citations. In the works. It will soon be advertised.
• Status of the affiliation programme. See item below for details.

HSF Affiliated Projects and Software

Several projects have been contacted after the Summer and evaluations are either in discussion or will happen soon.

Check out here for the list of affiliated projects.

Activities Updates

Software Training

Oct. 6: a Hackathon on the SSH shell course material tool place.

Ideas for upcoming trainings:

• Organize the basic training twice a year: once online and once in-person, charging a small fee. The one in-person could be scheduled alongside other in-person events (for instance, summer schools)
  • Move to intermediate and advanced trainings, and keeping the basic material available in the Training Center for self-study

Future Events:

• 13th HEP C++ Course and hands-on training - Advanced C++, 27-31 Oct, registration open, places for in person attendance available
• Blueprint Meeting on AI - TBD
  • Survey to collect comments, and then organize a dedicated session with different collaborations to define a roadmap

Event generators

• A 2-day workshop from the LHC Monte Carlo WG is taking place as we speak, Oct. 8-9: https://indico.cern.ch/event/1553687/timetable/.
  • The HSF was invited to present on “HSF: Vision and Role in MC Toolchain Sustainability” at the session “Sustainability of the MC toolchain”. Sapta presented for us.

Detector Simulation

The next G4 Technical forum will be held on Oct. 23.

Reconstruction and Software Triggers

• Ongoing work to organize an HSF seminar on open data sets for AI/ML training purposes. We have one on LHC Open data and one on foundation models for NPP dataset. No confirmation yet from one on foundation models (from CMS colleagues); maybe alternatively one related to ML-based tracking.

PyHEP

• PyHEP 2025 Users Workshop: hybrid event at CERN on Oct. 27 - 30. Call for abstracts is open up to Oct. 13 23:59.
  • Over 150 people registered
  • 4 half days
  • Over 20 abstracts: ML, AD, analysis tools, etc.
  • Wednesday at 16:30 - a tutorial by Ashwin Srinath from Nvidia “Pythonic GPU Parallelism for HEP with cuda-cccl”
  • Possibly an awkward package hackathon on Thursday (morning session)

JuliaHEP

• We will start soon organising the JuliaHEP 2026 Workshop! It will probably be in Germany, so that it takes advantage of JuliaCon 2026 in Mainz.

AOB

Physical Constants / HEPdata Library

Reminder: we are proposing a C++ header-only library that defines physical constants and some salient HEPdata in a lightweight, easy-to-use manner. Also taking into account versioning.

John Chapman and Graeme Stewart picked this up again last week. We have asked for mp-units to be added to the LCG builds. Then we would like to add a simple header with common HEP constants and gradually migrate towards an integrated solution with mp-units.

Finally, we would like to automate the generation of constant files directly from PDG and CODATA (this bit can be language neutral).

Additional help/contributions welcome!

Next Meeting

The next coordination meeting will be October 23rd, https://indico.cern.ch/event/1477089/.

Chair This Meeting 👇

Please sign up for chairing a future coordination meeting. (There is even a HOWTO guide).

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