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    DD4hep Developers Meeting

    → Europe/Zurich
    zoom

    zoom
    Andre Sailer (CERN), Markus Frank (CERN)
    Description

    Please Join DD4hep developer's meeting via Zoom

    DD4hep Developers Meeting
    Zoom Meeting ID
    68917133930
    Host
    Andre Sailer
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    DD4hep Meeting September 17th, 2026

    Present:     Andre, Juan

    Apologies: Markus


    Link to minutes of previous meeting

    Merged PRs

    • PR1663: Geant4Output2EDM4hep: get run from worker context (Andre)

              ISSUE1660: OutputAction and contexts bug (Andre/Thomas)
    • PR1666:   Modified FCC MDI Synchrotron Radiation Mask geometry (Who is neskongarr?)
    • PR1668: DDG4: catch primaries outside the world volume
    • PR1670: fix(Geant4UIManager): do not skip BeamOn when PreRunCommands are set
    • PR1674: ClientTests: add references for pseudotrap on gcc16
    • PR1675: EventSeeder Remove superfluous call the event seed double seed
    • PR1673: fix: rename RETURN template type to avoid macro clash on macOS-15
    • PR1669: fix(EventSeed): do not leak the run number from EventParameters between events

    Closed PRs, closed issues and fixed problems

    • ISSUE1635: ddsim crashes when given a particle outside world volumebug (Andre)
    •  

    Pending Problems

    • ISSUE1335: Uniform random picking of points on detector surfaces for noise studies
                             This problem is linked to #1297 and #580.
    • ISSUE1458: Possible discrepancy between xml file and geometry converted into root file
    • ISSUE1501: Bug/Feature: Condense duplicated particle contributions in calorimeter question
    • ISSUE1568: Sim hits between two sensitive volumes (Alexander Tuna)
    • ISSUE1633: Decouple DD4hep Readers/Writers into Separate Source and Injection/Build Stagesenhancement (Simon Gardner)
    • ISSUE1643: Non-determinism in hit ordering when multiple detectors share readoutbug (Wouter)


    Pending PR:

    • PR1606:   feat: AdePT physics list plugin for e+/e-/gamma offload to GPU [WIP] (Wouter)

    • PR1626:   feat: add support for python geometry plugins (Wouter)
    • PR1658:   [DRAFT POC] Add Arrow IPC stream writer for EDM4hep output (Wouter)
              ---> What is arrow IPC
    • PR1664:   feat: honor DD4HEP_LIBRARY_PATH for plugin search (Wouter)
              ---> MacOS is non-trivial!

    New:

    • ISSUE1657:  DDG4 reduces the generator status to 16 bits and gives no warning (Marco Meyer-Conde)

    Round Table

    Andre:            New tag 1.38
    Juan:              NTR

    Next meeting:   October 1st, 2026

     

    There are minutes attached to this event. Show them.
      • 15:30 → 15:50
        Around the table 20m