1. curl https://raw.githubusercontent.com/cmstas/NtupleMaker/master/install.sh > install.sh.
2. Specify the CMSSW_release and CMS3Tag (branch name or tag name) you want to use at the top of install.sh.
3. source install.sh will check out the CMSSW release and NtupleMaker repository, and build everything.

1. If you're not there already, cd $CMSSW_BASE/src/CMS3/NtupleMaker/test/.
2. The main pset is, unsuprisingly, main_pset.py, and it supports running on data (PromptReco or a Re-Reco), MC (FullSim or FastSim) with various options.
3. Check out the last block of code in the pset to see what parameters you need to modify. Typically, the parameters to modify are:

process.GlobalTag.globaltag = "80X_dataRun2_2016SeptRepro_v7"
process.out.fileName = cms.untracked.string('ntuple.root') # output
process.source.fileNames = cms.untracked.vstring('file:DataDoubleEG2016C.root') # input
process.eventMaker.CMS3tag = cms.string('V08-00-18') # doesn't affect ntupling, only for bookkeeping later on
process.eventMaker.datasetName = cms.string('/DoubleEG/Run2016C-03Feb2017-v1/MINIAOD') # doesn't affect ntupling, only for bookkeeping later on
process.maxEvents.input = cms.untracked.int32(3000) # max number of events; note that crab overrides this to -1

4. Finally,

• cmsRun main_pset.py data=True prompt=True to run on prompt data
• cmsRun main_pset.py data=False to run on FullSim MC
• cmsRun main_pset.py fastsim=True to run on FastSim MC

In install.sh, use CMS3Tag=CMS4_V00-00-07 and CMSSW_release=CMSSW_9_4_0 to run on the RunII 2017 re-reco sample for /DoubleEG/Run2017F-17Nov2017-v1/MINIAOD

And paste the following at the end of main_pset.py.

process.GlobalTag.globaltag = "94X_dataRun2_ReReco_EOY17_v2"
process.out.fileName = cms.untracked.string('ntuple.root') # output
process.source.fileNames = cms.untracked.vstring(['/store/data/Run2017F/DoubleEG/MINIAOD/17Nov2017-v1/60000/EAED912B-F7DE-E711-8E9B-0242AC1C0500.root']) # input
process.eventMaker.CMS3tag = cms.string('CMS4_V00-00-07') # doesn't affect ntupling, only for bookkeeping later on
process.eventMaker.datasetName = cms.string('/DoubleEG/Run2017F-17Nov2017-v1/MINIAOD') # doesn't affect ntupling, only for bookkeeping later on
process.maxEvents.input = cms.untracked.int32(3000) # max number of events; note that crab overrides this to -1

Run it with cmsRun main_pset.py data=True.

To make a tarfile for use with Metis, the current string looks something like this

mtarfile lib_CMS4_V09-04-13_946p1.tar.gz -e $CMSSW_BASE/external/$SCRAM_ARCH/lib/libmxnet_predict.so $CMSSW_BASE/config/toolbox/$SCRAM_ARCH/tools/selected/mxnet_predict.xml

due to the presence of the heavy object tagger, which unfortunately requires us to copy .so files :( So messy.