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HSF Weekly Meeting #161, 7 March, 2019

Present/Contributors: Graeme Stewart, Andrei Gheata, Danilo Piparo, Pere Mato, Serhan Mete, Caterina Doglioni, David Lange, Jim Amundson, Stefan Roiser, Paul Laycock, Heather Gray, Michel Jouvin, Liz Sexton-Kennedy, Andrea Rizzi, Javier Cervantes Villaneuva

Apologies: Agnieszka Dziurda

News, general matters

• OpenLab Nvidia workshop:
  • 25 March at CERN: https://indico.cern.ch/event/803015/.
  • One day “overview” of hardware and tools, idea to then follow up on most interesting topics,
• Electron Ion Consortium Software Workshop:
  • 20-21 May in Trieste, Italy.
  • Graeme has been asked to give a presentation for the HSF.
  • Contact Markus Deifenthaler for more details.

Google Summer of Code 2019

• Proposal for Advisory Committee:
  • Aim is to help to select projects against slots (assuming slots < projects).
    • Should also assess given the potential students.
    • Criteria: novelty, student rank, impact, first time projects, projects with multiple proposals, etc.
      • Still need to be agreed on.
  • We approve the idea - it can only help the process.
  • If you would be willing to serve as on the AC please let HSF Coordination know.
    • Pete Elmer expressed interest.

HSF/WLCG/OSG Workshop News and Planning

• Indico - registration is still open with 232 people registered (limit is 250).

Planning

• Reminder: David Lange, Michel Jouvin and Graeme Stewart organising for HSF.
• Rooms:
  • JLab managed to improve the room setup - we “upgraded” from a room of 60 to a capacity of 100 in the ARC centre.
  • Room assignments are ~done - maybe a few last shuffles to optimise for the new room sizes.
  • Will do a sound check with LOC next week to verify Vidyo connection is acceptable.
  • Vidyo rooms to be created - Graeme will distributed the moderation PIN in case it’s needed.
• For JLab this meeting is classed as a public event, so there are no onerous requirements for entry.
  • However, you do have to bring acceptable government issued photo ID.
  • You do need to wear your conference badge on site.
  • Foresee 10’ extra on Monday morning to get a welcome pack and your badge
  • See https://www.jlab.org/visiting for information on visitor parking
    • Try to car share from your accommodation!

Activity and Working Group Updates

General points:

• Reminder to make sure your WG page has.
  • Brief description of the interests of the group.
  • Information on how to join the group’s mailing list.
  • Information on how to contact the convenors (convenor list or individual emails).
  • A link to the group’s Indico category.

Data Analysis

• Talks and speakers confirmed, agenda should reflect that by the end of the day.

Detector Simulation

• Q: when is the discussion on shared MC samples between collaborations happening? Can we invite some DarkMachines people?
• JLab sorted - useful interactions between experiments.
• Topical meeting yesterday - 3 talks, but filled all of the time as lots of good discussion.

Reconstruction and Software Triggers

• JLab sessions all settled (see last week’s notes).
  • Next week: chat (maybe live, maybe email) with speakers to look at talks and prepare 3-4 questions for the final discussion session.
    • Only used if audience isn’t proposing their own.
  • Since we have Vidyo, we would like to announce the session to the HSF trigger&reco list - good idea?
    • Asking for questions via email to avoid possible bad-connection problems.
• Trying to organize first topical meeting.
  • Topics: introduction to trigger&reconstructions for various HEP experiments, two by two to encourage cross-talk.
    • Contacted ATLAS&CMS trigger coordinators.
    • They had a (non-public) meeting two weeks ago, we asked for a summary of the public parts on:
      • Trigger and DAQ usage/limits and data streaming model.
      • How to design a trigger menu, trigger monitoring.
    • LHCb just put this paper on the arXiv: https://arxiv.org/abs/1903.01360 relevant for discussion.
  • First available option on calendar (thanks!) next week, but many people at ACAT so probably postpone to after JLab.

Software Tools

• All set for JLab.

PyHEP

• WG Gitter channel very active with almost 70 people signed in!
• For information, a couple of extra channels have been created by and for the benefit of the community:
  • PyHEP-histogramming for discussions around histogramming.
  • mpl-hep for Matplotlib proposals related to Particle Physics.
• You are more than welcome to join any of the channels and contribute to the exchanges!

Training

• Session at JLab organised - 4th talk, but keep time for discussion.

Licensing

• CERN have a webpage that recommends GPLv3:
  • https://legal.web.cern.ch/licensing/software-terms-use
  • Graeme has followed up with KT to discuss this.
• Still no response from FastJet authors.

Packaging

• Minutes from 27 Feb are available.
  • Next meeting 27 March.

AOB

• Any need for a meeting next week? (14 March)
  • Probably not and it’s also ACAT, so many people will be away. Only have a meeting if something urgent comes up.
• See you all at JLab!

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