[Backport]: Customisation snippet for full-range M0 default in HCAL reco

[abdoulline]

PR description:

Backport of #36161

At PPD Coordination on Wed. 17 Nov. it was agreed to use this customization for pilot beam re-reco instead of default MAHI, as HCAL time alignment was quite questionable during data taking.

[cmsbuild]

A new Pull Request was created by @abdoulline (Salavat Abdullin) for CMSSW_12_1_X.

It involves the following packages:

• RecoLocalCalo/HcalRecProducers (reconstruction)

@jpata, @cmsbuild, @slava77 can you please review it and eventually sign? Thanks.
@apsallid, @mariadalfonso, @bsunanda this is something you requested to watch as well.
@perrotta, @dpiparo, @qliphy you are the release manager for this.

cms-bot commands are listed here

• Backported from Customisation snippet for full-range M0 default in HCAL reco #36161

[slava77]

@cmsbuild please test

[slava77]

@abdoulline
please clarify how urgent is this (and/or when a release with this is going to be needed).
Thank you.

[abdoulline]

@slava77
I suppose it's rather urgent, as needed for re-reco of the pilot beam (test) data.
A bit of context: HCAL time alignment wasn't done very well, so default MAHI scale is off substantially and rather arbitrarily across the detector.
As @mseidel42 has mentioned in the sibling of this PR (12_2 one) #36161 (comment)
it was agreed yesterday at PPD coordination.

[slava77]

urgent

[cmsbuild]

Pull request #36162 was updated. @jpata, @cmsbuild, @slava77 can you please check and sign again.

[abdoulline]

@slava77 done the same (as for 12_2 PR) suggested naming and location change

[slava77]

@cmsbuild please test

[cmsbuild]

+1

Summary: https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-b7f002/20618/summary.html
COMMIT: 5ea513a
CMSSW: CMSSW_12_1_X_2021-11-18-1100/slc7_amd64_gcc900
User test area: For local testing, you can use /cvmfs/cms-ci.cern.ch/week1/cms-sw/cmssw/36162/20618/install.sh to create a dev area with all the needed externals and cmssw changes.

Comparison Summary

Summary:

• No significant changes to the logs found
• Reco comparison results: 8 differences found in the comparisons
• DQMHistoTests: Total files compared: 42
• DQMHistoTests: Total histograms compared: 2901440
• DQMHistoTests: Total failures: 6
• DQMHistoTests: Total nulls: 1
• DQMHistoTests: Total successes: 2901411
• DQMHistoTests: Total skipped: 22
• DQMHistoTests: Total Missing objects: 0
• DQMHistoSizes: Histogram memory added: -0.004 KiB( 41 files compared)
• DQMHistoSizes: changed ( 312.0 ): -0.004 KiB MessageLogger/Warnings
• Checked 177 log files, 37 edm output root files, 42 DQM output files
• TriggerResults: no differences found

[slava77]

backport of #36161

[slava77]

+reconstruction

for #36162 5ea513a

• code changes are the same as in Customisation snippet for full-range M0 default in HCAL reco #36161
• release defaults are unchanged -> OK to backport.

[cmsbuild]

This pull request is fully signed and it will be integrated in one of the next CMSSW_12_1_X IBs (tests are also fine) and once validation in the development release cycle CMSSW_12_2_X is complete. This pull request will now be reviewed by the release team before it's merged. @perrotta, @dpiparo, @qliphy (and backports should be raised in the release meeting by the corresponding L2)

[qliphy]

+1