Have InputProcessBlock transition have its own Workers

[Dr15Jones]

PR description:

• Continuing work to isolate the Workers for specific tasks.
• builds on Only make Worker for global transition if needed #51641

PR validation:

Code compiles, framework unit tests pass.

resolves cms-sw/framework-team#2387

[cmsbuild]

cms-bot internal usage

[Dr15Jones]

hold

wait till #51641 is merged

[cmsbuild]

-code-checks

Logs: https://cmssdt.cern.ch/SDT/code-checks/cms-sw-PR-51661/50530

Code check has found code style and quality issues which could be resolved by applying following patch(s)

• code-format:
  https://cmssdt.cern.ch/SDT/code-checks/cms-sw-PR-51661/50530/code-format.patch
  e.g. curl -k https://cmssdt.cern.ch/SDT/code-checks/cms-sw-PR-51661/50530/code-format.patch | patch -p1
  You can also run scram build code-format to apply code format directly

[cmsbuild]

+code-checks

Logs: https://cmssdt.cern.ch/SDT/code-checks/cms-sw-PR-51661/50531

• There are other open Pull requests which might conflict with changes you have proposed:
  • File FWCore/Framework/interface/GlobalSchedule.h modified in PR(s): Only make Worker for global transition if needed #51641
  • File FWCore/Framework/interface/Schedule.h modified in PR(s): Only make Worker for global transition if needed #51641
  • File FWCore/Framework/interface/maker/ModuleHolder.h modified in PR(s): Only make Worker for global transition if needed #51641
  • File FWCore/Framework/src/EventProcessor.cc modified in PR(s): Improve how some ActivityRegistry signals are emitted #51625, Only make Worker for global transition if needed #51641
  • File FWCore/Framework/src/GlobalSchedule.cc modified in PR(s): Only make Worker for global transition if needed #51641
  • File FWCore/Framework/src/Schedule.cc modified in PR(s): Improve how some ActivityRegistry signals are emitted #51625, Only make Worker for global transition if needed #51641

[cmsbuild]

Pull request has been put on hold by @Dr15Jones
They need to issue an unhold command to remove the hold state or L1 can unhold it for all

[cmsbuild]

A new Pull Request was created by @Dr15Jones for master.

It involves the following packages:

• FWCore/Framework (core)

@Dr15Jones, @cmsbuild, @makortel, @smuzaffar can you please review it and eventually sign? Thanks.
@makortel, @wddgit this is something you requested to watch as well.
@ftenchini, @mandrenguyen, @sextonkennedy you are the release manager for this.

cms-bot commands are listed here

[Dr15Jones]

please test

[cmsbuild]

-1

Failed Tests: RelVals
Size: This PR adds an extra 36KB to repository
Summary: https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-7838c1/55228/summary.html
COMMIT: 8b5359f
CMSSW: CMSSW_20_1_X_2026-08-10-1100/el9_amd64_gcc13
User test area: For local testing, you can use /cvmfs/cms-ci.cern.ch/week0/cms-sw/cmssw/51661/55228/install.sh to create a dev area with all the needed externals and cmssw changes.

Failed RelVals

• 37834.0

----- Begin Fatal Exception 10-Aug-2026 18:54:37 CEST-----------------------
An exception of category 'NoSecondaryFiles' occurred while
   [0] Constructing the EventProcessor
   [1] Constructing module: class=MixingModule label='mix'
Exception Message:
RootEmbeddedFileSequence no input files specified for secondary input source.
----- End Fatal Exception -------------------------------------------------

[makortel]

Changes look fine

[Dr15Jones]

Unhold

[Dr15Jones]

Please test

[cmsbuild]

+1

Size: This PR adds an extra 20KB to repository
Summary: https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-7838c1/55311/summary.html
COMMIT: 8b5359f
CMSSW: CMSSW_20_1_X_2026-08-13-0800/el9_amd64_gcc14
User test area: For local testing, you can use /cvmfs/cms-ci.cern.ch/week0/cms-sw/cmssw/51661/55311/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: 44
• DQMHistoTests: Total histograms compared: 3435544
• DQMHistoTests: Total failures: 0
• DQMHistoTests: Total nulls: 0
• DQMHistoTests: Total successes: 3435526
• DQMHistoTests: Total skipped: 18
• DQMHistoTests: Total Missing objects: 0
• DQMHistoSizes: Histogram memory added: 0.0 KiB( 43 files compared)
• Checked 191 log files, 159 edm output root files, 44 DQM output files
• TriggerResults: no differences found

[makortel]

+core

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

[mandrenguyen]

+1