run3.py

import FWCore.ParameterSet.Config as cms

from Configuration.Eras.Era_Run3_cff import Run3

process = cms.Process('SIM',Run3)

# import of standard configurations
process.load('Configuration.StandardSequences.Services_cff')
process.load('SimGeneral.HepPDTESSource.pythiapdt_cfi')
process.load('FWCore.MessageService.MessageLogger_cfi')
process.load('Configuration.EventContent.EventContent_cff')
process.load("Configuration.Geometry.GeometryExtended2021_cff")
process.load("Configuration.StandardSequences.MagneticField_cff")
process.load('Configuration.StandardSequences.Generator_cff')
process.load('IOMC.EventVertexGenerators.VtxSmearedRealistic25ns13p6TeVEarly2022Collision_cfi')
process.load('GeneratorInterface.Core.genFilterSummary_cff')
process.load('Configuration.StandardSequences.SimIdeal_cff')
process.load('Configuration.StandardSequences.EndOfProcess_cff')
process.load('Configuration.StandardSequences.FrontierConditions_GlobalTag_cff')

process.maxEvents = cms.untracked.PSet(
    input = cms.untracked.int32(10),
)

# Input source
process.source = cms.Source("EmptySource")

# Production Info
process.configurationMetadata = cms.untracked.PSet(
    annotation = cms.untracked.string('TTbar_14TeV_TuneCP5_cfi nevts:10'),
    name = cms.untracked.string('Applications'),
    version = cms.untracked.string('$Revision: 1.19 $')
)

# Other statements
process.genstepfilter.triggerConditions=cms.vstring("generation_step")
from Configuration.AlCa.GlobalTag import GlobalTag
process.GlobalTag = GlobalTag(process.GlobalTag, 'auto:phase1_2022_realistic', '')

process.generator = cms.EDFilter("Pythia8GeneratorFilter",
    PythiaParameters = cms.PSet(
        parameterSets = cms.vstring(
            'pythia8CommonSettings', 
            'pythia8CP5Settings', 
            'processParameters'
        ),
        processParameters = cms.vstring(
            'Top:gg2ttbar = on ', 
            'Top:qqbar2ttbar = on ', 
            '6:m0 = 175 '
        ),
        pythia8CP5Settings = cms.vstring(
            'Tune:pp 14', 
            'Tune:ee 7', 
            'MultipartonInteractions:ecmPow=0.03344', 
            'MultipartonInteractions:bProfile=2', 
            'MultipartonInteractions:pT0Ref=1.41', 
            'MultipartonInteractions:coreRadius=0.7634', 
            'MultipartonInteractions:coreFraction=0.63', 
            'ColourReconnection:range=5.176', 
            'SigmaTotal:zeroAXB=off', 
            'SpaceShower:alphaSorder=2', 
            'SpaceShower:alphaSvalue=0.118', 
            'SigmaProcess:alphaSvalue=0.118', 
            'SigmaProcess:alphaSorder=2', 
            'MultipartonInteractions:alphaSvalue=0.118', 
            'MultipartonInteractions:alphaSorder=2', 
            'TimeShower:alphaSorder=2', 
            'TimeShower:alphaSvalue=0.118', 
            'SigmaTotal:mode = 0', 
            'SigmaTotal:sigmaEl = 21.89', 
            'SigmaTotal:sigmaTot = 100.309', 
            'PDF:pSet=LHAPDF6:NNPDF31_nnlo_as_0118'
        ),
        pythia8CommonSettings = cms.vstring(
            'Tune:preferLHAPDF = 2', 
            'Main:timesAllowErrors = 10000', 
            'Check:epTolErr = 0.01', 
            'Beams:setProductionScalesFromLHEF = off', 
            'SLHA:keepSM = on', 
            'SLHA:minMassSM = 1000.', 
            'ParticleDecays:limitTau0 = on', 
            'ParticleDecays:tau0Max = 10', 
            'ParticleDecays:allowPhotonRadiation = on'
        )
    ),
    comEnergy = cms.double(14000.0),
    filterEfficiency = cms.untracked.double(1.0),
    maxEventsToPrint = cms.untracked.int32(0),
    pythiaHepMCVerbosity = cms.untracked.bool(False),
    pythiaPylistVerbosity = cms.untracked.int32(0)
)


process.ProductionFilterSequence = cms.Sequence(process.generator)

# Path and EndPath definitions
process.generation_step = cms.Path(process.pgen)
process.simulation_step = cms.Path(process.psim)
process.genfiltersummary_step = cms.EndPath(process.genFilterSummary)
process.endjob_step = cms.EndPath(process.endOfProcess)

# Schedule definition
process.schedule = cms.Schedule(process.generation_step,
                                process.genfiltersummary_step,
                                process.simulation_step,
                                process.endjob_step)

from PhysicsTools.PatAlgos.tools.helpers import associatePatAlgosToolsTask
associatePatAlgosToolsTask(process)
# filter all path with the production filter sequence
for path in process.paths:
        getattr(process,path).insert(0, process.ProductionFilterSequence)

# Add early deletion of temporary data products to reduce peak memory need
from Configuration.StandardSequences.earlyDeleteSettings_cff import customiseEarlyDelete
process = customiseEarlyDelete(process)
# End adding early deletion