Geant4 tracking in magnetic field parameters

[civanch]

PR description:

Configuration of Geant4 tracking in magnetic field includes now 3 areas:

1. relativistic tracks (E > 200 MeV) inside central CMS
2. low-energy tracks (E < 20 MeV)
3. remaining tracks
   Such configuration ensure unbiased simulation trajectories for relativistic tracks (bias below 0.1 micron for tracker hits) and do not bring extra CPU penalty and extra Geant4 tracking problems. Detailed discussion on the problem is in Added extra parameters for Geant4 tracking in field #31665.

This PR change simulation histories, so many differences are expected in MC WFs.

PR validation:

private

if this PR is a backport please specify the original PR and why you need to backport that PR: no

[cmsbuild]

The code-checks are being triggered in jenkins.

[cmsbuild]

+code-checks

Logs: https://cmssdt.cern.ch/SDT/code-checks/cms-sw-PR-32063/19674

• This PR adds an extra 20KB to repository

[cmsbuild]

A new Pull Request was created by @civanch (Vladimir Ivantchenko) for master.

It involves the following packages:

SimG4Core/Application
SimG4Core/MagneticField

@cmsbuild, @civanch, @mdhildreth can you please review it and eventually sign? Thanks.
@makortel, @namapane, @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

[civanch]

please test

[cmsbuild]

The tests are being triggered in jenkins.

• CMSSW_11_2_X_2020-11-09-1100/slc7_amd64_gcc820: https://cmssdt.cern.ch/jenkins/job/ib-run-pr-tests/10593/console Started: 2020/11/09 17:29

[cmsbuild]

+1
Tested at: 4445f63
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-5f68ba/10593/summary.html
CMSSW: CMSSW_11_2_X_2020-11-09-1100
SCRAM_ARCH: slc7_amd64_gcc820

[cmsbuild]

Comparison job queued.

[cmsbuild]

Comparison is ready
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-5f68ba/10593/summary.html

Comparison Summary:

• No significant changes to the logs found
• Reco comparison results: 41892 differences found in the comparisons
• DQMHistoTests: Total files compared: 35
• DQMHistoTests: Total histograms compared: 2529296
• DQMHistoTests: Total failures: 401286
• DQMHistoTests: Total nulls: 149
• DQMHistoTests: Total successes: 2127839
• DQMHistoTests: Total skipped: 22
• DQMHistoTests: Total Missing objects: 0
• DQMHistoSizes: Histogram memory added: 2.477 KiB( 34 files compared)
• DQMHistoSizes: changed ( 10224.0 ): 0.156 KiB SiStrip/MechanicalView
• DQMHistoSizes: changed ( 250202.181 ): -0.234 KiB SiStrip/MechanicalView
• DQMHistoSizes: changed ( 25202.0 ): -0.158 KiB SiStrip/MechanicalView
• DQMHistoSizes: changed ( 7.3 ): -1.362 KiB SiStrip/MechanicalView
• DQMHistoSizes: changed ( 8.0 ): 4.075 KiB SiStrip/MechanicalView
• Checked 148 log files, 22 edm output root files, 35 DQM output files

[civanch]

+1

@silviodonato, @qliphy, let us discuss at the release meeting this PR: when it is the best time to merge it.

[cmsbuild]

This pull request is fully signed and it will be integrated in one of the next master IBs (tests are also fine). 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)

[silviodonato]

hold
see #32063 (comment)

[cmsbuild]

Pull request has been put on hold by @silviodonato
They need to issue an unhold command to remove the hold state or L1 can unhold it for all

[silviodonato]

unhold

[cmsbuild]

This pull request is fully signed and it will be integrated in one of the next master IBs (tests are also fine). 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)

[silviodonato]

+1
@cms-sw/pdmv-l2 FYI this PR will be the cause of the statistic fluctuation in pre9 validation