MillePedeAlignmentAlgorithm: add a unit test for the mille step

[mmusich]

PR description:

Issue #44188 showed that we're liable against possible changes in the external libraries (millepede and gbl) used for running complex alignment campaigns, as there is no dedicated test for that.
This PR transforms the reproducer of issue #44188 into a unit test, using input Z → µµ ALCARECO data and running the mille step of the alignment procedure. The test gives also provision for running the pede one, but for timing reasons this is not exercised in central tests.

PR validation:

scram b runtests_test_MilleZmm runs fine.

If this PR is a backport please specify the original PR and why you need to backport that PR. If this PR will be backported please specify to which release cycle the backport is meant for:

Not a backport, might be backported to CMSSW_14_0_X for monitoring of the data-taking release.

[cmsbuild]

cms-bot internal usage

[cmsbuild]

+code-checks

Logs: https://cmssdt.cern.ch/SDT/code-checks/cms-sw-PR-44434/39510

• This PR adds an extra 16KB to repository

[cmsbuild]

A new Pull Request was created by @mmusich for master.

It involves the following packages:

• Alignment/MillePedeAlignmentAlgorithm (alca)

@saumyaphor4252, @perrotta, @consuegs, @cmsbuild can you please review it and eventually sign? Thanks.
@adewit, @rsreds, @tocheng, @yuanchao, @mmusich, @tlampen this is something you requested to watch as well.
@rappoccio, @sextonkennedy, @antoniovilela you are the release manager for this.

cms-bot commands are listed here

[mmusich]

@cmsbuild, please test

[cmsbuild]

+1

Summary: https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-44afb0/38190/summary.html
COMMIT: aaae750
CMSSW: CMSSW_14_1_X_2024-03-15-2300/el8_amd64_gcc12
User test area: For local testing, you can use /cvmfs/cms-ci.cern.ch/week0/cms-sw/cmssw/44434/38190/install.sh to create a dev area with all the needed externals and cmssw changes.

Comparison Summary

Summary:

• You potentially removed 5 lines from the logs
• Reco comparison results: 45 differences found in the comparisons
• DQMHistoTests: Total files compared: 48
• DQMHistoTests: Total histograms compared: 3297369
• DQMHistoTests: Total failures: 3
• DQMHistoTests: Total nulls: 0
• DQMHistoTests: Total successes: 3297346
• DQMHistoTests: Total skipped: 20
• DQMHistoTests: Total Missing objects: 0
• DQMHistoSizes: Histogram memory added: 0.0 KiB( 47 files compared)
• Checked 202 log files, 165 edm output root files, 48 DQM output files
• TriggerResults: no differences found

[perrotta]

@mmusich the unit test is technically successfull.
Is the output the one expected?

===== Test "test_MilleZmm" ====
testing mille step ...
Using Global Tag: 140X_dataRun3_ForTkAlReReco_v1
# MSG-i trackselectionRefitting:  g4Refitting=False
 GblPoint::getDerivatives failed to invert matrix 
 Possible reason for singular matrix: multiple GblPoints at same arc-length
 GblTrajectory construction failed: Singular matrix inversion exception
 GblPoint::getDerivatives failed to invert matrix 
 Possible reason for singular matrix: multiple GblPoints at same arc-length
 GblTrajectory construction failed: Singular matrix inversion exception

---> test test_MilleZmm succeeded
TestTime:276
^^^^ End Test test_MilleZmm ^^^^

[mmusich]

Is the output the one expected?

apparently so.

[perrotta]

+alca

[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. @sextonkennedy, @rappoccio, @antoniovilela (and backports should be raised in the release meeting by the corresponding L2)

[antoniovilela]

+1