Setup

git clone git@github.com:ram1123/CMS_FulllSimulation.git -b main
cd CMS_FulllSimulation

The main script is GetFullSimScriptsFromMCCM.py. This script automates the process of downloading, preparing, and processing CMS full detector simulation starting from gridpack. The script performs the following tasks:

1. Download the scripts from the provided URLs.
2. Modify the downloaded scripts.
3. Parse the scripts for CMSSW version and configuration file information.
4. Generate an executable script from the configuration file.
5. Generate a JDL file and sh for condor submission.
6. Submit the jobs using the generated JDL file.

The main script, GetFullSimScriptsFromMCCM.py, depends mainly on three external files. They are:

1. ChainDownloadLinkFromMccM_dict.py - Contains the chain name and the download link from McM. This file also serves as the bookkeeping file for the chain name and the download link.
   • When you run the main script, i.e. GetFullSimScriptsFromMCCM.py, it will use the information from this file and obtains the text file named CMSSWConfigFile.txt. This contains the basic infomration that will be used to to setup the full simulation script for the condor job. If you already have the configuration files, then just set this file properly and run without triggring to download and setup the config files. Note: you can also change the name of this file using command line
2. gridpack_lists.py - Contains the list of gridpacks you want to generate.
3. condor_script_template.py - Contains the template for the condor submission script. Unless you are changing any condor submission parameters or workflow, you don't need to change this file. For proper naming convention based on gridpack file name, you may need to update the ReplacementDict dictionary in this file.

NOTE: It would be good if you first test locally the .sh file obtained by this script for say 50 events. This will help you to understand the workflow and also to check if the script is working properly. Once you are satisfied with the local test, you can submit the jobs to condor. You may need to copy the CMSSW config file to the local directory.

General Suggestations: Commit the cmssw configuration and the .sh script downloaded from the mccm to git. This will help you to track the changes and also to reproduce the results.

How to run the script

• Step - 1: Prepare the ChainDownloadLinkFromMccM_dict.py file. Add the chain name and the download link from McM. This file also serves as the bookkeeping file for the chain name and the download link.

• Step - 2: Prepare the gridpack_lists.py file. Add the list of gridpacks you want to generate.

• Step - 3: Fetch the CMSSW configuration file from the McM. Run the script GetFullSimScriptsFromMCCM.py with the following command:

  python3 GetFullSimScriptsFromMCCM.py --nevents 2000  --model HHbbgg --year 2016preVFP --outDir /eos/user/r/rasharma/post_doc_ihep/double-higgs/nanoAODnTuples/HHTobbgg_Apr2024v3 --nJobs 100 --jobName 2016preVFP --UseCustomNanoAOD --run_exec

  Note the model and year arguments in the above command. It depends on your keys that you added in the ChainDownloadLinkFromMccM_dict.py and gridpack_lists.py files.

• Step - 4: Edit the CMSSW configuration file.

  python3 GetFullSimScriptsFromMCCM.py --nevents 2000  --model HHbbgg --year 2016preVFP --outDir /eos/user/r/rasharma/post_doc_ihep/double-higgs/nanoAODnTuples/HHTobbgg_Apr2024v3 --nJobs 100 --jobName 2016preVFP --UseCustomNanoAOD --NOdownload --append_to_config_file

  1. step-1 config file (wmLHE config file): Done by above command

     • Here you need to add the input arguments for the additional input arguments for seed value, and gridpack file

       from FWCore.ParameterSet.VarParsing import VarParsing
       options = VarParsing ('analysis')
       options.register ('seedval',
                   1238,
                   VarParsing.multiplicity.singleton,
                   VarParsing.varType.int,
                   "random seed for event generation")
       options.register ('gridpack',
                   '',
                   VarParsing.multiplicity.singleton,
                   VarParsing.varType.string,
                   "gridpack with path")
       options.parseArguments()

     • Add the message logger Done by above command

       process.MessageLogger.cerr.FwkReport.reportEvery = cms.untracked.int32(500)

     • Update the number of input events to be generated. Replace line: Do this manually, only in wmLHE file

       input = cms.untracked.int32(10000)

       with

       input = cms.untracked.int32(options.maxEvents)

       Note: The number of events is already updated in the first step, just set the number of events to be generated to -1 in the subsequent steps.

     • Update the gridpack path. Replace line: Do this manually, only in wmLHE file

       annotation = cms.untracked.string('Configuration/GenProduction/python/HIG-RunIISummer20UL16wmLHEGENAPV-03448-fragment.py nevts:10000'),

       with

       annotation = cms.untracked.string('Configuration/GenProduction/python/HIG-RunIISummer20UL16wmLHEGENAPV-03448-fragment.py nevts:'+str(options.maxEvents),

     • Update the gridpack path. Replace line: Do this manually, only in wmLHE file

       args = cms.vstring('/cvmfs/cms.cern.ch/phys_generator/gridpacks/UL/13TeV/madgraph/V5_2.6.5/GF_Spin_0/Radion_hh_narrow_M2000/v1/Radion_hh_narrow_M2000_slc7_amd64_gcc700_CMSSW_10_6_19_tarball.tar.xz'),

       with

       args = cms.vstring(options.gridpack),

     • Update the number of events in the gripack generation passage. Replace line: Do this manually, only in wmLHE file

       nEvents = cms.untracked.uint32(10000),

       with

       nEvents = cms.untracked.uint32(options.maxEvents),

     • Update the random seed value. Add line: Done by above command

       process.RandomNumberGeneratorService.externalLHEProducer.initialSeed=options.seedval

       after line:

       process = addMonitoring(process)

• Step - 5: Run the script to generate the executable script and JDL file.

  python3 GetFullSimScriptsFromMCCM.py --nevents 2000  --model HHbbgg --year 2016preVFP --outDir /eos/user/r/rasharma/post_doc_ihep/double-higgs/nanoAODnTuples/HHTobbgg_Apr2024v3 --nJobs 100 --jobName 2016preVFP --UseCustomNanoAOD --NOdownload

• Step - 6: Submit the jobs to condor.

  condor_submit UL2016postVFP.jdl

Few improvements or things to note

1. Directory name ConfigFiles is hardcoded in the script