[11_1_X] update the B-Field configuration at beginRun in SimG4Core/GeometryProducer

[mmusich]

backport of #31203

PR description:

This simple fix allows to be able to run the G4 refitting for alignment purposes on real data preventing a segfault, when crossing run boundaries described to occur in this thread.

PR validation:

The test configuration at /afs/cern.ch/cms/CAF/CMSALCA/ALCA_TRACKERALIGN/MP/MPproduction/mp3344/jobData/job181/ the.py runs successfully (caveat for testing, the changes at: cms-trackeralign:g4Refitting_10_6_X need to be merged first).

if this PR is a backport please specify the original PR and why you need to backport that PR:

This PR is a backport of #31203

[cmsbuild]

A new Pull Request was created by @mmusich (Marco Musich) for CMSSW_11_1_X.

It involves the following packages:

SimG4Core/GeometryProducer

@cmsbuild, @civanch, @mdhildreth can you please review it and eventually sign? Thanks.
@makortel, @rovere, @fabiocos, @slomeo this is something you requested to watch as well.
@silviodonato, @dpiparo, @qliphy you are the release manager for this.

cms-bot commands are listed here

• Backported from update the B-Field configuration at beginRun in SimG4Core/GeometryProducer #31203

[mmusich]

@cmsbuild, please test

[cmsbuild]

The tests are being triggered in jenkins.

• CMSSW_11_1_X_2020-08-21-1100/slc7_amd64_gcc820: https://cmssdt.cern.ch/jenkins/job/ib-run-pr-tests/8850/console Started: 2020/08/21 16:37

[cmsbuild]

+1
Tested at: f10d3dd
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-92e698/8850/summary.html
CMSSW: CMSSW_11_1_X_2020-08-21-1100
SCRAM_ARCH: slc7_amd64_gcc820

[cmsbuild]

Comparison job queued.

[cmsbuild]

Comparison is ready
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-92e698/8850/summary.html

@slava77 comparisons for the following workflows were not done due to missing matrix map:

• /data/cmsbld/jenkins/workspace/compare-root-files-short-matrix/data/PR-92e698/23234.1001_TTbar_14TeV+RecoFullGlobal_TestOldDigi_2026D49+HARVESTFullGlobal_2026D49

Comparison Summary:

• No significant changes to the logs found
• Reco comparison results: 4 differences found in the comparisons
• DQMHistoTests: Total files compared: 36
• DQMHistoTests: Total histograms compared: 2780792
• DQMHistoTests: Total failures: 2
• DQMHistoTests: Total nulls: 0
• DQMHistoTests: Total successes: 2780740
• DQMHistoTests: Total skipped: 50
• DQMHistoTests: Total Missing objects: 0
• DQMHistoSizes: Histogram memory added: 0.0 KiB( 35 files compared)
• Checked 152 log files, 16 edm output root files, 36 DQM output files

[civanch]

+1

[cmsbuild]

This pull request is fully signed and it will be integrated in one of the next CMSSW_11_1_X IBs (tests are also fine) and once validation in the development release cycle CMSSW_11_2_X is complete. This pull request will now be reviewed by the release team before it's merged. @silviodonato, @dpiparo, @qliphy (and backports should be raised in the release meeting by the corresponding L2)

[qliphy]

+1