Enable concurrent IOVs by default in ConfigBuilder

[makortel]

PR description:

While investigating #37385 / #37417 I noticed the default value in ConfigBuilder for the number of concurrent IOVs was still 1. I was supposed to change this to 0 at the time as #35302 that followed the default value logic addition to cmsRun directly in #34231. This PR sets the default value to 0, which means that the number of concurrent IOVs is set to be the same as the number of concurrent lumis.

For future reference, the main concern at the time was the memory usage of the additional per-lumi EventSetup products, which was concluded to be small in #33436.

PR validation:

Limited matrix (plus some more) runs multithreaded

[cmsbuild]

+code-checks

Logs: https://cmssdt.cern.ch/SDT/code-checks/cms-sw-PR-37419/29096

• This PR adds an extra 36KB to repository

• There are other open Pull requests which might conflict with changes you have proposed:

  • File Configuration/Applications/python/ConfigBuilder.py modified in PR(s): Set concurrent lumis/IOVs in ConfigBuilder if their value is different from default regardless of the number of threads #37417

[cmsbuild]

A new Pull Request was created by @makortel (Matti Kortelainen) for master.

It involves the following packages:

• Configuration/Applications (operations)

@cmsbuild, @perrotta, @qliphy, @fabiocos, @davidlange6 can you please review it and eventually sign? Thanks.
@Martin-Grunewald, @missirol, @fabiocos 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

[makortel]

enable threading

[makortel]

@cmsbuild, please test

[cmsbuild]

+1

Summary: https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-06cef5/23569/summary.html
COMMIT: 054a62f
CMSSW: CMSSW_12_4_X_2022-03-31-1100/slc7_amd64_gcc10
Additional Tests: THREADING
User test area: For local testing, you can use /cvmfs/cms-ci.cern.ch/week0/cms-sw/cmssw/37419/23569/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: 0 differences found in the comparisons
• DQMHistoTests: Total files compared: 48
• DQMHistoTests: Total histograms compared: 3591311
• DQMHistoTests: Total failures: 2
• DQMHistoTests: Total nulls: 0
• DQMHistoTests: Total successes: 3591287
• DQMHistoTests: Total skipped: 22
• DQMHistoTests: Total Missing objects: 0
• DQMHistoSizes: Histogram memory added: 0.0 KiB( 47 files compared)
• Checked 200 log files, 45 edm output root files, 48 DQM output files
• TriggerResults: no differences found

[perrotta]

+1

[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 be automatically merged.