DD4hep Developers Meeting

Name: DD4hep Developers Meeting
Start: 2025-03-20T15:30:00+01:00
End: 2025-03-20T16:00:00+01:00
Location: zoom

Thursday 20 Mar 2025, 15:30 → 16:00 Europe/Zurich

zoom

Andre Sailer (CERN), Markus Frank (CERN)

Description

Please Join DD4hep developer's meeting via Zoom

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Andre Sailer

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DD4hep Meeting March 20th, 2025

Present: A.Sailer, M.Frank, Peter McKneown

Apologies: A.Tolosa Delgado, T.Madlehner

Link to minutes of previous meeting

PR1420: Allow to selectively disable DD4HEP sub-packages (Markus)

$> cmake -DDD4HEP_DISABLE_PACKAGES="DDRec DDEve DDDigi"  ../DD4hep

PR1421: fix typo in CMakeLists.txt (Charles)
--> Fix to above PR1420. I tested though...
PR1422: Add LANGUAGES CXX to the project command not to depend on a C compiler (Juan Miguel)
PR1414: Fix the result of innerMaterial() and outerMaterial() depending on if the other is called first (Juan Miguel)
--> Important fix. Should improve tracking.
--> Fixes ISSUE1413
PR1425: Documentation fixes (Juan Miguel)
--> Let's thank Juan-Miguel!. Let's remind ourselves that documentation is really treated like a step-child.
PR1426: Only build components that need ROOT::Eve if it's available (Charles)
--> Continuation of story starting with PR1420 and PR1421 . Still there is ISSUE1424 and PR1428 (see below).
--> ISSUE1418 was closed, but probably premature
PR1427: Remove C++ preprocessor checks for a standard before C++14

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.
ISSUE1335: Uniform random picking of points on detector surfaces for noise studies
This problem is linked to #1297 and #580.
ISSUE1373: Add GeneratorInfo to EDM4hepReader (Andre)
PR1371: Read edm4hep (Andre)
ISSUE1399: ddsim: Vertices of tau and its decay product not matching the information in the input HEPMC file
---> Apparently Geant4 problem. Andre has submitted a ticket.
ISSUE1419: Assigning multiple sensitive volumes to a single readout Id
ISSUE1429: Error with ROOT::Eve when building DD4hep

PR1240: Add multithreading support to ddsim
PR1304: SurfaceManager: lazily construct surface maps on demand (Leonhard Reichenbach)
PR1314: Cylinder segment surface (Armin Ilg)
PR1370: Feature celeritas integration (Sakib Rahman/EIC)
PR1377: Use canonical variables for the installation locations of libraries and binaries (Andriish)
==> Idea to have an additional DD4HEP_PLUGIN_PATH and remove dd4hep plugins fdrom the LD_LIBRARY_PATH

New Pending PRs:

ISSUE1409: Cannot get help with -h or --help?enhancement
ISSUE1413: The result of innerMaterial and outerMaterial depends on if the other function is called beforebug
ISSUE1418: Possible to build without Eve dependencyquestion

Andre:       NTR
Markus:    NTR
Peter:        NTR

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Next meeting: April 10th, 2025

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