Present/Contributing: Torre Wenaus, Eduardo Rodrigues, Liz Sexton-Kennedy, Michel Jouvin, Tommaso Lari, Luke Kreczko, Michel Villanueva, Pere Mato, InĂŞs Ochoa, Joe Osborn, Sapta Battacharya, Claire Antel
Apologies/Contributing:
Progress on submission to EPJC? As discussed it will be submitted as an editorial. Will be finished off and submitted ASAP.
Eduardo prepared and presented the report for the LHCC referees meeting that took place on 3 June.
The feedback was very positive. Specific questions/feedback to us:
Caterina Doglioni as the new HSF representative at IRIS-HEP is preparing slides from the HSF for the meeting now postponed to June 17th.
Recent and planned seminars:
Venice workshop report tentatively scheduled for September. dCache project have signalled interest in presenting in a future Seminar.
HSF seminar conveners are reachable at hsf-seminar-conveners@googlegroups.com
Conveners plan to work with CAF conveners for a better co-organisation of these 2 events: hope to see some concrete steps next Fall.
The SG met on Monday 3 June, https://indico.cern.ch/event/1550243/. Minutes will be available later.
Graeme will step down at the end of the month. Election for a new (co-)chair(s) just started.
SG will contact the IML and EUCAIF to see what kind of stronger engagement/collaboration is viable.
Project affiliation - decided after feedback to stop the gold/silver/bronze distinctions, just a basic badge. And possibly add topical badges later.
ACTS: Graeme and Michel attended the last ACTS weekly developer meeting.
Future events:
Topic of generators in the neutrino community would be interesting.
Website still needs to be updated with current convener names.
Monte Carlo WG is starting a new subgroup to discuss the following issues: “Data Sharing and New Workflows” in the context of event generation.
The sharing of particle-level event samples (i.e. after shower and hadronisation) to reduce duplicated efforts between experiments. This is not a new discussion, but it makes sense in my opinion to follow up on it as part of this WG (sub)group. What is the status of such efforts? Can we do more/better? Are there technical stumbling blocks? Is there something to be done on the generators’ side to facilitate this?
The sharing of parton-level event samples (i.e. before the parton shower). This would allow for a more factorised event generation workflow, where off-the-shelf unweighted parton-level samples can be used as input for different shower and hadronisation models. A separate generation of large parton-level samples requires (not much) storage and easy deployment to WLCG event generation jobs. Some generators already support such a workflow.
Such a factorised event generation workflow would also enable easy HPC/GPU off-loading to reduce the event generation computing footprint on the WLCG. Novel HPC/GPU-accelerated parton-level MC generators have recently been released (MadGraph4GPU, Sherpa/Pepper, …) Their deployment on large HPC resources is now being tested.
Which computing/storage/deployment tools and infrastructure are most suitable for what job (Zenodo, Rucio, WLCG, HPC, LHEF, HDF5, HepMC3 …)?
Which MC samples can be shared publicly as Open Data? This would be very useful for pheno and ML studies that require very large samples. To maximise versatility one might need to identify additional event data entries to be stored, as well as metadata, configs, cached MC integration results etc.
PyHEP.dev 2025 Workshop will be held at University of Washington from July 14 to 17.
JuliaHEP 2025 Workshop will be held at Princeton from July 28 to 31.
The next coordination meeting will be 19 June, https://indico.cern.ch/event/1477079/, and we still need someone to chair! We will then be covered until October.
Please sign up for chairing a future coordination meeting. (There is even a HOWTO guide).