Move TF session in L1Trigger/L1NNTauProducer to global cache

[riga]

PR description

This PR adapts the L1NNTauProducer and TauNNId helper object in L1Trigger to use a single, const tensorflow session stored in the global cache. For this, it's using the central SessionCache struct introduced in #40284.

This is part of the planned changes documented in #40248, intended to treat all tf sessions as constant for model evaluation purposes and therefore preventing copies across stream module instances for saving memory.

PR validation

There was no new functionality added to the L1NNTauProducer, so existing test cases should fully cover the changes.

@clacaputo @yongbinfeng @valsdav

[cmsbuild]

+code-checks

Logs: https://cmssdt.cern.ch/SDT/code-checks/cms-sw-PR-40333/33418

• This PR adds an extra 16KB to repository

[cmsbuild]

A new Pull Request was created by @riga (Marcel R.) for master.

It involves the following packages:

• L1Trigger/Phase2L1ParticleFlow (upgrade, l1)

@rekovic, @epalencia, @cmsbuild, @AdrianoDee, @srimanob, @cecilecaillol can you please review it and eventually sign? Thanks.
@Martin-Grunewald, @missirol, @beaucero, @trtomei this is something you requested to watch as well.
@perrotta, @dpiparo, @rappoccio you are the release manager for this.

cms-bot commands are listed here

[cmsbuild]

+code-checks

Logs: https://cmssdt.cern.ch/SDT/code-checks/cms-sw-PR-40333/33428

• This PR adds an extra 16KB to repository

[cmsbuild]

Pull request #40333 was updated. @rekovic, @epalencia, @cmsbuild, @AdrianoDee, @srimanob, @cecilecaillol can you please check and sign again.

[srimanob]

@cmsbuild please test

[cmsbuild]

+1

Summary: https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-b42873/29668/summary.html
COMMIT: ce1a224
CMSSW: CMSSW_13_0_X_2022-12-16-2300/el8_amd64_gcc11
User test area: For local testing, you can use /cvmfs/cms-ci.cern.ch/week1/cms-sw/cmssw/40333/29668/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: 35 differences found in the comparisons
• DQMHistoTests: Total files compared: 49
• DQMHistoTests: Total histograms compared: 3557521
• DQMHistoTests: Total failures: 1197
• DQMHistoTests: Total nulls: 0
• DQMHistoTests: Total successes: 3556302
• DQMHistoTests: Total skipped: 22
• DQMHistoTests: Total Missing objects: 0
• DQMHistoSizes: Histogram memory added: 0.0 KiB( 48 files compared)
• Checked 211 log files, 162 edm output root files, 49 DQM output files
• TriggerResults: no differences found

[cecilecaillol]

+l1

[AdrianoDee]

+upgrade
Technical

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

[perrotta]

+1