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    EDM4hep Discussion

    → Europe/Zurich
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    Live Notes
    EDM4hep Discussion
    Zoom Meeting ID
    98484040528
    Host
    Andre Sailer
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    EDM4hep Live Notes
    ==================

    Date: June 20, 2023
    Indico: https://indico.cern.ch/event/1298154/

    Connected: Andre, Swathi, Leonhard, Weidong, Benedikt, Juan, Tao, Thomas, Juraj, Frank, Brieuc, Sanghyun, Wenxing,

    Apologies:

    ## Introduction and General Points

    ### Upcoming workshops / conferences
    https://github.com/orgs/key4hep/projects/4/views/1

       
    ## Progress and discussion

    ### Frame integration into FW
    * https://github.com/key4hep/k4FWCore/pull/100
       * Plus linked PRs in there
       * "immediately usable metadata" (Juan will have a look this week)
       
    ### LCIO to EDM4hep conversion
    * https://github.com/key4hep/k4EDM4hep2LcioConv/pull/11
       * Library for LCIO -> EDM4hep conversion
       * standalone executable
       * [x] merged
       * [ ] Other communities with LCIO files should also try converter to see if it also works there
    * https://github.com/key4hep/k4MarlinWrapper/pull/114
       * Library for conversion tools in MarlinWrapper
       * Does not yet solve https://github.com/key4hep/k4MarlinWrapper/issues/113
       * [ ] Retrigger CI to see if things build now
       * How many (Marlin) processors are involved?
           * All of CLD
           * But problem already happens now because we start with EDM4hep, switch to LCIO for reconstruction and convert back to EDM4hep for output.
           * Can work around issue by using LCIO input, but will no longer be possible when mixing Gaudi / Marlin

    ## Podio
    * https://github.com/AIDASoft/podio/pulls
    * https://github.com/AIDASoft/podio/issues
    * https://github.com/orgs/AIDASoft/projects/2/views/1


    ### Hashing of collection names for collectionID
    * https://github.com/AIDASoft/podio/pull/412
    * [x] merged

    ### Improve `podio-dump`
    * https://github.com/AIDASoft/podio/pull/427
       * Dynamic table formatting, 
       * alphabetically sorted collections (uses `tabulate` python package) 
       * quicker help
       
    ### EIC GPU hackathon at BNL
    * Submitted proposal for participation
    * Goal prototype: SoA vs AoS internal representation
    * See also slides from Tao (EDM4hep + vecmem)
       * https://github.com/AIDASoft/podio/pull/424
       * Potentially orthogonal to SoA vs AoS
       

    ## EDM4hep
    * https://github.com/key4hep/EDM4hep/pulls
    * https://github.com/key4hep/EDM4hep/issues

    ### Renaming of vector member of tracks
    * https://github.com/key4hep/EDM4hep/pull/188
    * Should not need schema evolution prior to https://github.com/AIDASoft/podio/pull/405 
       * Needed to touch quite a few places afterwards
       * [x] https://github.com/cepc/CEPCSW/pull/246
       * [x] https://github.com/key4hep/k4LCIOReader/pull/33
       * [x] https://github.com/key4hep/k4FWCore/pull/111
       * [x] https://github.com/key4hep/k4Pandora/pull/6
       * [ ] https://github.com/key4hep/k4MarlinWrapper/pull/115
       
    ### EDM4hep python bindings
    * https://github.com/key4hep/EDM4hep/pull/204
    * Working, can be used for writing Frames
    * Still needs some work from user side for moveing


    ### EDM4hep in coffea
    * https://github.com/CoffeaTeam/coffea/pull/822/

    ## AoB
    * MCTree visualization from JSON EDM4hep output
       * Filtering of MCParticles (e.g. generator status)
    * New repository (outside of EDM4hep)


    ## Next meeting:
    * July 4, 2023 09:00 CET

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