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HSF Weekly Meeting #164, 25 April, 2019

Present/Contributors: Graeme Stewart, Witek Pokorski, Heather Gray, Andrei Gheata, Javier Cervantes, Eduardo Rodrigues, Marco Clemencic, Andrea Rizzi, David Lange, Daniel Elvira, Pete Mato, Mark Neubauer, Caterina Doglioni, Agnieszka Dziurda, Paul Laycock, Liz Sexton-Kennedy, Michel Jouvin, Martin Ritter, Sudhir Malik, Davide Costanzo

News, general matters

• CernVM Workshop is quite soon, 3-5 June. Please register:
  • https://indico.cern.ch/event/757415/

Google Summer of Code 2019

• Slots requested: min 30 - max 35.
• Accepted slots: 34 (5 more than last year).
• We need to start ranking projects and selecting students.
• 36 projects were eligible, but 1 had no proposals, making 35.
• So had to cut just one project (done based on advisory committee input - thanks to them).
• Will organise a few meetings one only for mentors and one for students + mentors.
• Students will be confirmed by 6 May.
• Mentors should not contact students, but can start preparations for involving the students from May.
• Q. Can you sent a summary to the mentor list?
  • Will post a message soon.

Google Season of Docs

• We submitted our application to be an umbrella organisation.
• Three proposals: ROOT, Rucio, DIRAC.
• Google have said they will only give 1-2 writers, but perhaps different for umbrella organisation, we are asking.

Activity and Working Group Updates

Data Analysis

• Preparing the next two meetings. Indico links:
  • https://indico.cern.ch/event/813207/
  • https://indico.cern.ch/event/813208/
• These are clashes with HSF Coordination meeting on Thursdays, not ideal, but was the best option with other constraints.
• Next week there is also the FNAL workshop on declarative analysis languages.

Detector Simulation

• Preparing for next two topical meetings. Indico agendas are now available. Please don’t hesitate to get in contact with us if you’d like to suggest any presentations or future topical meetings.
  • https://indico.cern.ch/event/816484/
  • https://indico.cern.ch/event/816485/

Reconstruction and Software Triggers

• We had several convenors’ discussions before Easter break, the outcome is following:
• ATLAS/CMS cross-talks:
  • 22nd May, 4pm.
  • https://indico.cern.ch/event/815233/
  • Speakers confirmed: Jiri Masik (ATLAS), Simone Gennai (CMS)
• Plan to have meeting on 5th June:
  • Topic: Algorithms and data structures to efficiently exploit many-core architectures - one of the topics described in CWP.
  • Invitations to collaborations will be sent shortly.
• We discussed many several potential subjects for our meetings:
  • DUNE reconstruction,
  • DarkMatter,
  • Benchmarking for different architectures (x64, GPU, FPGA),
  • SOA vs AOS data format design
  • Packages that help go from cuda–>CPU or c++-> GPU
  • Organize taster sessions to coding on non-CPU (together with Training?)
    • HLS for FPGA
    • GPU programming
• We decided to go through the list and aim to have 1 meeting in every 3-4 weeks.

PyHEP

• NTR on organisation of meetings.
• A lot of discussion on design of histogramming packages at https://gitter.im/HSF/PyHEP-histogramming. Do join if you want to participate as user/developer/chatter …
  • IRIS-HEP topical meeting on histogramming just over one week ago, see https://indico.cern.ch/event/803122/.

Training

• See slides attached to today’s agenda.
• Liz is organising a C++ training event at FNAL next month. Good instructor, but we need to see how well this works for an HEP audience.
• Feedback from carpentry people who taught at FNAL? Were the students more advanced?
  • They were pre-warned about the level and adapted the material.
  • Students were very happy with the course.
• Can we think about a future event in Europe?
  • Yes, it’s planned for after the round of current US events.

Event Generators

• Next meeting planned for 9 May.

Event Delivery Forum

• Mailing list and GitHub repo setup.

Packaging

• Meeting this week was postponed until May.
  • Probably Wednesday 29: https://doodle.com/poll/xzpu6zg2nsprghqa

Frameworks

• Would still like to work on a mandate for a revitalised frameworks group post-JLab - contact Graeme and Liz if you are interested in helping.

Workshops

Pre-CHEP (2-3 November)

• First organisation meeting last Tuesday (23 April): only Ian C., Michel and Simone. List created for the organizing committee: wlcg-hsf-workshop-2019-organisation@cern.ch. Let Michel or Ian C. know if you want to be involved.
• Proposal is to have a 2 x half day meeting from Saturday noon to Sunday noon so that people can rest a little bit during the weekend before the CHEP week. Idea is to focus on one topic that could be of interest for HSF (SW) and WLCG (infrastructure), with no parallel session. Suggested topic is analysis from DOMA to SW tools.
  • Paul - would have to plan properly, but it’s a good idea.
  • Need to distinguish it from the CHEP talks and presentations. More discussions, break across the site/users boundary.
  • TODO: add Andrea and Paul to mailing list.
  • Baseline proposal generally supported during the coordination discussion
• Parallel rooms are available, should people want a BoF or the like, but in general we don’t want a lot of parallel sessions.

AOB

• Simulation developers have asked for an HSF convened meeting to present the results of the GeantV prototype and to discuss plans for the future.
  • Proposed datetime is 8 October, 14-18h.
    • Noted a clash with a non-CERN ATLAS week
    • Would be better the following week (w/b 14 Oct) as any “clash” with HEPiX should be quite limited.
    • Witek will check with colleagues.
• Graeme added the next few WG meetings as announcements to the website.
  • Note we have to have far too many manual steps right now for meetings:
    • Create Indico.
    • Add to community calendar.
    • Do a PR to the website for a banner via an “announcement”.
  • It’s tedious, tricky and error prone - want to improve it.
  • Discussion of improvements on GitHub (happy to have people help!).
• Next coordination meeting planned for 2 weeks time, 9 May.

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