Fixed parallel voxelization flag

[civanch]

CMS unit tests crash if the default value of the parallel initialization flag is used. This PR fix the issue.

[cmsbuild]

A new Pull Request was created by @civanch for branch cms/v11.4.0.

@akritkbehera, @cmsbuild, @iarspider, @raoatifshad, @smuzaffar can you please review it and eventually sign? Thanks.
@ftenchini, @mandrenguyen, @sextonkennedy you are the release manager for this.
cms-bot commands are listed here

[cmsbuild]

cms-bot internal usage

[smuzaffar]

thanks @civanch , so this is not to fix the hanging tests? Note that relvals/addon and unit tests still hangs for Geant4 11.4 cms-sw/cmssw#49615 (comment) ( even with your fix in cmssw : cms-sw/cmssw#49615)

[civanch]

@smuzaffar , if we exclude cms-sw/cmssw#49615?

[smuzaffar]

please test for CMSSW_16_0_GEANT4_X

lets tests it without cms-sw/cmssw#49615

[smuzaffar]

please test for CMSSW_16_0_G4VECGEOM_X

[smuzaffar]

please test with cms-sw/cmsdist#10243 for CMSSW_16_0_GEANT4_X

@civanch , looks like tests did not hang without cms-sw/cmssw#49615. Let me re-run the tests with cmsdist PR which also has new geant4 data

[cmsbuild]

+1

Summary: https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-d94d74/49978/summary.html
COMMIT: 7de8992
CMSSW: CMSSW_16_0_GEANT4_X_2025-12-14-2300/el8_amd64_gcc13
User test area: For local testing, you can use /cvmfs/cms-ci.cern.ch/week0/cms-externals/geant4/101/49978/install.sh to create a dev area with all the needed externals and cmssw changes.

The following merge commits were also included on top of IB + this PR after doing git cms-merge-topic:

• @cms-sw [GEANT4] Update vecgeom version to v2.0.0 cms-sw/cmsdist#10249
• @fwyzard Update ROCm configuration cms-sw/cmsdist#10238

You can see more details here:
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-d94d74/49978/git-recent-commits.json
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-d94d74/49978/git-merge-result

[cmsbuild]

+1

Summary: https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-d94d74/49976/summary.html
COMMIT: 7de8992
CMSSW: CMSSW_16_0_G4VECGEOM_X_2025-12-14-2300/el8_amd64_gcc13
User test area: For local testing, you can use /cvmfs/cms-ci.cern.ch/week0/cms-externals/geant4/101/49976/install.sh to create a dev area with all the needed externals and cmssw changes.

The following merge commits were also included on top of IB + this PR after doing git cms-merge-topic:

• @cms-sw [GEANT4] Update vecgeom version to v2.0.0 cms-sw/cmsdist#10249

You can see more details here:
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-d94d74/49976/git-recent-commits.json
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-d94d74/49976/git-merge-result

Comparison Summary

Summary:

• You potentially added 232 lines to the logs
• ROOTFileChecks: Some differences in event products or their sizes found
• Reco comparison results: 65873 differences found in the comparisons
• Reco comparison had 4 failed jobs
• DQMHistoTests: Total files compared: 53
• DQMHistoTests: Total histograms compared: 4271963
• DQMHistoTests: Total failures: 382519
• DQMHistoTests: Total nulls: 445
• DQMHistoTests: Total successes: 3888979
• DQMHistoTests: Total skipped: 20
• DQMHistoTests: Total Missing objects: 0
• DQMHistoSizes: Histogram memory added: 42689.28500000001 KiB( 52 files compared)
• DQMHistoSizes: changed ( 10224.0,... ): 6.566 KiB Vertexing/PrimaryVertexV
• DQMHistoSizes: changed ( 10224.0 ): 0.352 KiB SiStrip/MechanicalView
• DQMHistoSizes: changed ( 13034.0 ): -2.818 KiB SiStrip/MechanicalView
• DQMHistoSizes: changed ( 16834.0,... ): 5613.913 KiB HLT/Vertexing
• DQMHistoSizes: changed ( 16834.0,... ): 0.004 KiB MessageLogger/Errors
• DQMHistoSizes: changed ( 16834.0,... ): 0.004 KiB MessageLogger/Warnings
• DQMHistoSizes: changed ( 17034.0 ): 0.468 KiB SiStrip/MechanicalView
• DQMHistoSizes: changed ( 18634.0 ): 2.291 KiB SiStrip/MechanicalView
• DQMHistoSizes: changed ( 250202.181 ): 0.240 KiB SiStrip/MechanicalView
• DQMHistoSizes: changed ( 25202.0 ): 0.161 KiB SiStrip/MechanicalView
• DQMHistoSizes: changed ( 34434.0 ): ...
• Checked 227 log files, 198 edm output root files, 53 DQM output files
• TriggerResults: found differences in 19 / 51 workflows

[smuzaffar]

+externals

thesis for special Geant4 IBs

[cmsbuild]

This pull request is fully signed and it will be integrated in one of the next cms/v11.4.0 IBs (tests are also fine). This pull request will now be reviewed by the release team before it's merged. @sextonkennedy, @mandrenguyen, @ftenchini (and backports should be raised in the release meeting by the corresponding L2)
Notice This PR was tested with additional Pull Request(s), please also merge them if necessary: cms-sw/cmsdist#10243

[cmsbuild]

+1

Summary: https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-d94d74/49978/summary.html
COMMIT: 7de8992
CMSSW: CMSSW_16_0_GEANT4_X_2025-12-14-2300/el8_amd64_gcc13
User test area: For local testing, you can use /cvmfs/cms-ci.cern.ch/week0/cms-externals/geant4/101/49978/install.sh to create a dev area with all the needed externals and cmssw changes.

The following merge commits were also included on top of IB + this PR after doing git cms-merge-topic:

• @cms-sw [GEANT4] Update vecgeom version to v2.0.0 cms-sw/cmsdist#10249
• @fwyzard Update ROCm configuration cms-sw/cmsdist#10238

You can see more details here:
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-d94d74/49978/git-recent-commits.json
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-d94d74/49978/git-merge-result

Comparison Summary

Summary:

• You potentially added 264 lines to the logs
• ROOTFileChecks: Some differences in event products or their sizes found
• Reco comparison results: 66539 differences found in the comparisons
• Reco comparison had 4 failed jobs
• DQMHistoTests: Total files compared: 53
• DQMHistoTests: Total histograms compared: 4271963
• DQMHistoTests: Total failures: 373432
• DQMHistoTests: Total nulls: 461
• DQMHistoTests: Total successes: 3898050
• DQMHistoTests: Total skipped: 20
• DQMHistoTests: Total Missing objects: 0
• DQMHistoSizes: Histogram memory added: 42692.26800000001 KiB( 52 files compared)
• DQMHistoSizes: changed ( 10224.0,... ): 6.566 KiB Vertexing/PrimaryVertexV
• DQMHistoSizes: changed ( 10224.0 ): -0.371 KiB SiStrip/MechanicalView
• DQMHistoSizes: changed ( 16834.0,... ): 5613.913 KiB HLT/Vertexing
• DQMHistoSizes: changed ( 16834.0,... ): 0.004 KiB MessageLogger/Errors
• DQMHistoSizes: changed ( 16834.0,... ): 0.004 KiB MessageLogger/Warnings
• DQMHistoSizes: changed ( 17034.0 ): 1.068 KiB SiStrip/MechanicalView
• DQMHistoSizes: changed ( 18634.0 ): 0.674 KiB SiStrip/MechanicalView
• DQMHistoSizes: changed ( 250202.181 ): 0.240 KiB SiStrip/MechanicalView
• DQMHistoSizes: changed ( 25202.0 ): 0.352 KiB SiStrip/MechanicalView
• DQMHistoSizes: changed ( 34434.0,... ): 3336.274 KiB HLT/Vertexing
• DQMHistoSizes: changed ( 34434.0 ): ...
• Checked 227 log files, 198 edm output root files, 53 DQM output files
• TriggerResults: found differences in 17 / 51 workflows