Introduction ## Overview: HSF general plans on input The HEP Software Foundation is planning to provide an input document to the [European Strategy on Particle Physics Update 2024-2026](https://home.web.cern.ch/news/news/knowledge-sharing/updating-european-strategy-particle-physics), with a focus on the 4 most compute-intensive topics: Event Generators, Simulation, **Reconstruction and Software Triggers**, Data Analysis + crucial topic of Training and Careers. #### Today's workshop is focussed on input around Software Triggers and Reconstruction specifically. Page limit is *10 pages* for complete document: **~2 pages** per topic (i.e. what is discussed here _today_ will have to be summarised in 2 pages). HSF's feedback will be a follow up to the HSF whitepaper & previous European Strategy Update: [https://hepsoftwarefoundation.org/organization/documents.html](https://hepsoftwarefoundation.org/organization/documents.html) ## Timeline (HSF general) - Nov/Dec: Identify messages to pass (via mini workshop and discussions), prepare a 2-3 page summary. - Jan: Put together all HSF topics to finalize draft. - Feb: Circulate to community for feedback and suggestion. - March: Endorsement by the community. ## Meeting structure We have prepared a [google doc](https://docs.google.com/document/d/1qNhQ-IjPAmL2-Mx2tXtDAloPLWFprIt9mToa11iQb9M/edit?usp=sharing) for people to add thoughts/discussions before, during and after workshop. Please use it! At the end of the doc is a section for "Main Messages" we will aim to identify during the meeting. Please endorse the ones you agree are crucial! We have several talks around important topics in Trig & Reco. They are each 15 minutes + 5 minute discussions. At the end we have 20 minutes for discussion + any flash talks people have volunteered. ## Keep in mind - We aim to represent all experiments in HEP where computing challenges are paramount to inform on the international landscape: LHC experiments, Belle II, DUNE, future EIC, FCC etc, although natural focus on EU driven projects. - We should highlight accomplishments, synergies, and implementations since last update, not just challenges. - What we say on the topic of SW Trig & Reco should resonate with inputs submitted by individual experiments. - We only have 2 pages. : ) ## What's next? - **Everyone** is welcome to join the [HSF coordination meetings](https://indico.cern.ch/category/7970/) (every second Thursday, 15h00 CERN time) if they have further input or could not attend this meeting. Please join! - To sign up to mailing lists see the [HSF forums webpage](https://hepsoftwarefoundation.org/forums.html) and click [here](https://hepsoftwarefoundation.org/future-events.html) for a community calendar. - We will start drafting the Trig & Reco input on overleaf with the aim of completing a full draft by end Jan, circulation to community in Feb (see timeline above) - if you're interested in being editor, get in touch. - Once a document is circulated, we encourage experiments to organise internal presentations at e.g. SW & Computing meetings to present the document and gather community feedback and agreement. ## Auxiliary material HSF Mini workshop on Training & Careers: [Monday 2nd Dec @ 16h00](https://indico.cern.ch/event/1467463/) HSF Mini workshop on Detector Simulation: [last Friday 22nd Nov](https://indico.cern.ch/event/1475445/) HSF seminar on Event Generation with GPUS: [today, 16h30](https://indico.cern.ch/event/1465925/)

Triggering strategies and heterogeneous computing

• Marianna Fontana (INFN Bologna (IT))

Software Maintainance & QA

• Dmitry Kalinkin
• Dmitry Kalinkin

4D Reconstruction

• Valentina Cairo (CERN)

Training & Careers

• Vava Gligorov (Centre National de la Recherche Scientifique (FR))

ML in trigger

• Dylan Sheldon Rankin (University of Pennsylvania (US))

Flash Talks/Discussion