DD4hep Developers Meeting

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Andre Sailer (CERN), Markus Frank (CERN)
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Please Join DD4hep developer's meeting via Zoom

DD4hep Developers Meeting
Zoom Meeting ID
68917133930
Host
Andre Sailer
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DD4hep Meeting November 21rst, 2024

Present:  A.Sailer, M.Frank, P.McKeown

Apologies:


Link to minutes of previous meeting

Merged PRs

  • PR       1352  : DDG4: add possibility to control verbosity for physics constructors (Andre)
    ISSUE 1351  : Feature Request: Adjustable Verbosity for Physics List Initialization in DDSim (Andre)
  • PR       1355  : Ddcms geant4 clhep
    ISSUE 1354  : DDCMS: Linker error related to Geant4 library location

Pending Problems

  • ISSUE1199: Persist hepmc vertex status code into output
                          ==> Should we eliminate Geant4EventReaderHepMC
                          ==> Decision: Geant4EventReaderHepMC will be removed
  • ISSUE1285:  Memory Consumption of Sensitive Detectors
                          ==> Should be handled as illustrated in PR1288. Intrinsic problem of the Geant4VolumeManager;
  • ISSUE1296:  DetectorImp::endDocument() called twice for some geometries?
                          ==> Unsure if it is a problem wrongly configuring multiple xml inputs.
  • ISSUE1297:  Possible to dump all available readout elements?
                         ==> Possibly a copy of unsolved ISSUE580 from Valentin about enumerating all sensitive cells.
  • ISSUE1319: Problem with regexSensitiveDetector and volume IDs
                         ==> Interesting use case for reg-ex sensitive detectors
                                 having a VolumeMgr equivalent.
  • ISSUE1320:  Replacing a Handle<Segmentation> which contains a MultiSegmentation with the underlying Segmentation
                         ===> Unclear what he really means. Questions after re-reading, calls like:
    Handle<SomeSegmentation> seg = multisegmentation->subSegmentation(cellID);
or
Segmentation* seg = multisegmentation->subSegmentation(cellID);
  • ISSUE 1335: Uniform random picking of points on detector surfaces for noise studies
                This problem is linked to #1297 and #580 .
  • ISSUE 1343: want to get a parameter into ddsim SDAction at run time
  • ISSUE 1356: Limitation on the number of event for hepevt
                 Hard limit in event reader to satisfy coverity. Should it be put higher ?

    Pending (no changes since last meeting):
  • PR1240:     Add multithreading support to ddsim
  • PR1304:     SurfaceManager: lazily construct surface maps on demand (Leonhard Reichenbach)
  • PR1314:     Cylinder segment surface (Armin Ilg)

Closed issues and fixed problems

  • PR 1353:       Bug fix in Segmentation's CylindricalGridPhiZ and PolarGridRPhi2
                           ==> dropped
  • ISSUE 1350: Error in setDetectorTypeFlag: map::at
                          ==> explanation sorted out by Andre

Round Table

Andre:     NTR
Markus:  DDEve7: working on the new event display for ROOT7.
Peter:      Working on placement of hadronic showers. Working together with folks at Desy.

AOB

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Next meeting:   December 5th, 2024

There are minutes attached to this event. Show them.