DD4hep Developers Meeting

Thursday 9 Feb 2023, 15:30 → 16:00 Europe/Zurich

zoom

Andre Sailer (CERN), Markus Frank (CERN)

Please Join DD4hep developer's meeting via Zoom

Present: M.Frank,  F.Brieuc, F.Gaede, J. Smiesko, T.Madlehner

1) Pending problems

----

1) DDDigi TBB code needs migration to new oneAPI TBB interfaces (Issue 901):
      Clash between Intel oneapi TBB and classic TBB.
      -- Wouter promised to look into.
2) Issue 940: Integration of external library (CRY) for cosmic ray generation in DDG4 simulation: on hold
3) Issue 970: Support for digitization in ddsim: on hold
4) Issue 984: DD4hep output with MarlinDD4hep
5) Issue 988: Propagate cross section to the simulation (on hold)
                        Should this be fixed since edm4hep podio frames. Missing: EventHeader.,weight
6) Issue 1014: Issue using optical surfaces
                         ===> Related: Issue 1027 (Program never stops)
7) Issue 1034: DD4hep and Opticks (Sarah)
8) Issue 1054: Shared library lookup in macOS 13
9) Issue 1051: Propagation of ions

2)    Closed issues and fixed problems
----

1) Issue 1037: Should the momentum vector be added to the DDG4 MC contribution object of a Geant4Particle ?
2) Issue 1040: example that shows how to read events into ddsim from a file
3) PR 994)  Geometry checksum/hash for consistency checks between simulation and reconstruction steps
                ===> Force closed
4) PR 1052:  Write some run information for EDM4hep outputs
5) PR 1052:  Remove not implemented declaration of member function PlacedVolume::flags()
6) PR 1053:  Update CI: Require compatible podio version
7) PR 1055): DD4hep.cmake: respect DYLD_LIBRARY_PATH when running listcomponents
8) PR 1056): CI: update actions used in github workflows

Pending: 
9) PR1058: Fix export of dd4hep::units to python
           Symptom: The auto-load mechanism of ROOT started to arbitrarily load libraries when certain units were requested from python.
                              This could easily lead to loading non-compatible binary libraries e.g. when using LCG views, which contain a compiled version of DD4hep.
                              ===> Unclear reason. Fix to import the units from a static class only visible to the dictionaries, which does not
                              trigger the auto-loading.

3) Round table
----
  Markus:     LHC startup is getting closer. Limit time to spend on DD4hep.
  Francois:   Working in liquid Argon detector for FCC.
  Frank:        Not much news. Tried the silicon block example, but did not succeed. 
                     Should be working though unless there were changes in Geant4 we missed.
  Jurai:          NTR
  Thomas:    NTR

4) AOB
----
 

Next meeting:  23. February 2023

 

15:30 → 15:50 Around the table