Speed up the CSC trigger emulator for Run-3 and Phase-2

[dildick]

PR description:

Issue #34633 reports a significant slowdown in cmsRun calls in recent IBs, pointing to the startup of the CSC trigger emulator code. A large number of LUTs need to be loaded. A solution is being considered at the moment. In the mean time, I will hide certain LUTs behind if statements. LUTs are then only loaded when an expert flag is set. This should prevent these LUTs from being loaded for now:

   2160 L1Trigger/CSCTriggerPrimitives/data/CCLUT/CSCComparatorCodePatternConversionLUT_pat0_v1.txt
   2161 L1Trigger/CSCTriggerPrimitives/data/CCLUT/CSCComparatorCodePatternConversionLUT_pat1_v1.txt
   2160 L1Trigger/CSCTriggerPrimitives/data/CCLUT/CSCComparatorCodePatternConversionLUT_pat2_v1.txt
   2160 L1Trigger/CSCTriggerPrimitives/data/CCLUT/CSCComparatorCodePatternConversionLUT_pat3_v1.txt
   2160 L1Trigger/CSCTriggerPrimitives/data/CCLUT/CSCComparatorCodePatternConversionLUT_pat4_v1.txt
   2160 L1Trigger/CSCTriggerPrimitives/data/CCLUT/CSCComparatorCodePosOffsetLUT_pat0_v1.txt
   2161 L1Trigger/CSCTriggerPrimitives/data/CCLUT/CSCComparatorCodePosOffsetLUT_pat1_v1.txt
   2160 L1Trigger/CSCTriggerPrimitives/data/CCLUT/CSCComparatorCodePosOffsetLUT_pat2_v1.txt
   2160 L1Trigger/CSCTriggerPrimitives/data/CCLUT/CSCComparatorCodePosOffsetLUT_pat3_v1.txt
   2160 L1Trigger/CSCTriggerPrimitives/data/CCLUT/CSCComparatorCodePosOffsetLUT_pat4_v1.txt
   2161 L1Trigger/CSCTriggerPrimitives/data/CCLUT/CSCComparatorCodeSlopeLUT_pat0_v1.txt
   2161 L1Trigger/CSCTriggerPrimitives/data/CCLUT/CSCComparatorCodeSlopeLUT_pat1_v1.txt
   2161 L1Trigger/CSCTriggerPrimitives/data/CCLUT/CSCComparatorCodeSlopeLUT_pat2_v1.txt
   2160 L1Trigger/CSCTriggerPrimitives/data/CCLUT/CSCComparatorCodeSlopeLUT_pat3_v1.txt
   2162 L1Trigger/CSCTriggerPrimitives/data/CCLUT/CSCComparatorCodeSlopeLUT_pat4_v1.txt
   2160 L1Trigger/CSCTriggerPrimitives/data/LCTCode/CSCLUT_code_to_bestLCT.txt
   2161 L1Trigger/CSCTriggerPrimitives/data/LCTCode/CSCLUT_code_to_secondLCT.txt
   2160 L1Trigger/CSCTriggerPrimitives/data/ME11/CSCLUT_wg_max_hs_ME1a.txt
   2161 L1Trigger/CSCTriggerPrimitives/data/ME11/CSCLUT_wg_max_hs_ME1a_ganged.txt
   2160 L1Trigger/CSCTriggerPrimitives/data/ME11/CSCLUT_wg_max_hs_ME1b.txt
   2160 L1Trigger/CSCTriggerPrimitives/data/ME11/CSCLUT_wg_min_hs_ME1a.txt
   2160 L1Trigger/CSCTriggerPrimitives/data/ME11/CSCLUT_wg_min_hs_ME1a_ganged.txt
   2162 L1Trigger/CSCTriggerPrimitives/data/ME11/CSCLUT_wg_min_hs_ME1b.txt

GEM-CSC LUTs in folder L1Trigger/CSCTriggerPrimitives/data/GEMCSC/ are unfortunately still being loaded for each ME1/1 chamber. Other than turning off the GEM-CSC trigger itself, I don't have a prompt solution.

A longer term solution may be the introduction of ESProducer and ESProduct objects for CSC lookup tables. To be discussed with CSC DPG.

PR validation:

Code compiles.

if this PR is a backport please specify the original PR and why you need to backport that PR:

Before submitting your pull requests, make sure you followed this checklist:

• verify that the PR is really intended for the chosen branch
• verify that changes follow CMS Naming, Coding, And Style Rules
• verify that the PR passes the basic test procedure suggested in the CMSSW PR instructions

[cmsbuild]

+code-checks

Logs: https://cmssdt.cern.ch/SDT/code-checks/cms-sw-PR-34638/24226

• This PR adds an extra 28KB to repository

[cmsbuild]

A new Pull Request was created by @dildick (Sven Dildick) for master.

It involves the following packages:

• L1Trigger/CSCTriggerPrimitives (l1)

@cmsbuild, @rekovic, @cecilecaillol can you please review it and eventually sign? Thanks.
@valuev, @ptcox, @Martin-Grunewald this is something you requested to watch as well.
@silviodonato, @dpiparo, @qliphy, @perrotta you are the release manager for this.

cms-bot commands are listed here

[dildick]

@makortel Can you start the tests?

[makortel]

@cmsbuild, please test

[makortel]

urgent

[cmsbuild]

+1

Summary: https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-34a36e/17224/summary.html
COMMIT: 3b79b28
CMSSW: CMSSW_12_0_X_2021-07-26-1100/slc7_amd64_gcc900
User test area: For local testing, you can use /cvmfs/cms-ci.cern.ch/week1/cms-sw/cmssw/34638/17224/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: 39
• DQMHistoTests: Total histograms compared: 2998564
• DQMHistoTests: Total failures: 1
• DQMHistoTests: Total nulls: 0
• DQMHistoTests: Total successes: 2998541
• DQMHistoTests: Total skipped: 22
• DQMHistoTests: Total Missing objects: 0
• DQMHistoSizes: Histogram memory added: 0.0 KiB( 38 files compared)
• Checked 165 log files, 37 edm output root files, 39 DQM output files
• TriggerResults: no differences found

[cecilecaillol]

+l1

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

[qliphy]

+1