feat: Branch aborter for track finding in Examples

[andiwand]

Adding a branch aborter to the track finding in the Examples Framework. This should spare some computation in case we encounter too many holes during the search.

[github-actions]

📊: Physics performance monitoring for 7d9f4fa

Full contents

physmon summary

• ✅ CKF truth_smeared
• ✅ IVF truth_smeared
• ✅ AMVF truth_smeared
• ✅ Track Summary CKF truth_smeared
• ✅ Seeding truth_estimated
• ✅ CKF truth_estimated
• ✅ IVF truth_estimated
• ✅ AMVF truth_estimated
• ✅ Track Summary CKF truth_estimated
• ✅ Seeding seeded
• ✅ CKF seeded
• ✅ IVF seeded
• ✅ AMVF seeded
• ✅ AMVF (+grid seeder) seeded
• ✅ Track Summary CKF seeded
• ✅ Seeding orthogonal
• ✅ CKF orthogonal
• ✅ IVF orthogonal
• ✅ AMVF orthogonal
• ✅ Track Summary CKF orthogonal
• ✅ Ambisolver seeded
• ✅ Ambisolver orthogonal
• ✅ Seeding ttbar
• ✅ CKF ttbar
• ✅ Ambisolver
• ✅ Track Summary CKF ttbar
• ✅ AMVF ttbar
• ✅ AMVF (+grid seeder) ttbar
• ✅ Truth tracking (GSF)
• ✅ Truth tracking
• ✅ Truth tracking (GX2F)
• ✅ Particles fatras
• ✅ Particles geant4

[andiwand]

ttbar PU 200
default smearing
fatras

I am a bit surprised that this does not cut the CPU time more effectively for ttbar PU 200. I suspected that there are a lot of fake seeds which would lead to stopped branches. Maybe the maximum for the chi2 measurement selector is too high.

[timadye]

I am a bit surprised that this does not cut the CPU time more effectively for ttbar PU 200. I suspected that there are a lot of fake seeds which would lead to stopped branches. Maybe the maximum for the chi2 measurement selector is too high.

The improvement was disappointing in Athena as well. There weren't a huge number of tracks with 3 holes - except at the ends. So it might do better when you can stop the track early.

I didn't yet investigate applying pT or eta cuts in the branch stopper. Those have to be looser than the default because they aren't well measured while still filtering the track.

[acts-project-service]

✅ Athena integration test results [a2a0ac5]

✅ All tests successful

status	job	report
🟢	run_unit_tests
🟢	test_ActsEFTrackFit
🟢	test_ActsPersistifySeeds
🟢	test_ActsBenchmarkWithSpot
🟢	test_ActsAnalogueClustering
🟢	test_ActsConversionWorkflow
🟢	test_ActsWorkflowFastTracking
🟢	test_ActsWorkflow
🟢	test_ActsValidateAmbiguityResolution
🟢	test_ActsValidateResolvedTracks
🟢	test_ActsValidateTracks
🟢	test_ActsValidateActsCoreSpacePoints
🟢	test_ActsValidateActsSpacePoints
🟢	test_ActsValidateSeeds
🟢	test_ActsValidateOrthogonalSeeds
🟢	test_ActsValidateClusters
🟢	test_ActsPersistifyEDM
🟢	test_ActsGSFRefitting
🟢	test_ActsKfRefitting
🟢	test_ActsExtrapolationAlgTest
🟢	test_ActsITkTest
🟢	run_workflow_tests_run4_mc
🟢	run_workflow_tests_run2_mc
🟢	run_workflow_tests_run2_data
🟢	run_workflow_tests_run3_mc
🟢	run_workflow_tests_run3_data
🟢	run_art_test: test_data18_13TeV_1000evt
🟢	run_art_test: test_ttbarPU40_reco