[ROOT640] Updated root to tip of branch v6-40-00-patches

[akritkbehera]

No description provided.

[akritkbehera]

please test

[cmsbuild]

A new Pull Request was created by @akritkbehera for branch IB/CMSSW_20_1_X/root640.

@akritkbehera, @iarspider, @raoatifshad, @smuzaffar can you please review it and eventually sign? Thanks.
@ftenchini, @mandrenguyen, @sextonkennedy you are the release manager for this.
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[cmsbuild]

cms-bot internal usage

[cmsbuild]

+1

Summary: https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-0c3a5b/54172/summary.html
COMMIT: 89faa37
CMSSW: CMSSW_20_1_ROOT640_X_2026-06-19-2300/el9_amd64_gcc13
User test area: For local testing, you can use /cvmfs/cms-ci.cern.ch/week0/cms-sw/cmsdist/10676/54172/install.sh to create a dev area with all the needed externals and cmssw changes.

The following merge commits were also included on top of IB + this PR after doing git cms-merge-topic:

• @cms-sw PyTorch 2.12.1 #10659
• @cms-sw Added support for overriding c++ standard for package via command-line #10666
• @felicepantaleo Add perfetto external (v56.1) #10668
• @cms-sw triton: added optional support for cuda #10670
• @cms-sw Add default package name definition for vectorization #10671
• @cms-sw added default_pkgname for different varient of torch packages #10672
• @cms-sw added override_microarch_name for vectorized packages #10673

You can see more details here:
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-0c3a5b/54172/git-recent-commits.json
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-0c3a5b/54172/git-merge-result

Comparison Summary

Summary:

• You potentially added 217 lines to the logs
• Reco comparison results: 0 differences found in the comparisons
• DQMHistoTests: Total files compared: 45
• DQMHistoTests: Total histograms compared: 3414477
• DQMHistoTests: Total failures: 26040
• DQMHistoTests: Total nulls: 10
• DQMHistoTests: Total successes: 3388409
• DQMHistoTests: Total skipped: 18
• DQMHistoTests: Total Missing objects: 0
• DQMHistoSizes: Histogram memory added: 0.0 KiB( 44 files compared)
• Checked 195 log files, 163 edm output root files, 45 DQM output files

[akritkbehera]

+externals

[cmsbuild]

This pull request is fully signed and it will be integrated in one of the next IB/CMSSW_20_1_X/root640 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)