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ALPGEN 8TeV CMS Production

Grid Files

The grid files, produced by Alex, are in his public home in afs:


And in my personal afs area:


Unweighting and Matching Efficiency of Grid files

I have to run on the grid files to discover the efficiencies of producing:

  • Unweighted events, given a number of weighted events to produce;
  • Showered events, after matching procedure on PYTHIA, so we can deliver the correct amount of .lhe files.

The order of the grid files to run is:

  • W + jets
  • Z + jets
  • ttbar + jets
  • QCD

List of Grid Efficiencies

Grid .unw eff Matching eff
w0j_0ptw100.grid2 0.00 0.00
w0j_0ptw100.grid2 0.00 0.00

-- FlaviaDias - 04 Dec 2010

Step by step plan - Working with crab, efficiencies evaluation, etc.

I've runned the test for Alpgen on crab in my CERN afs area. Need to do the same steps in my own personal area in ACCESS from SPRACE.

  • Copy the files needed (from the tarball given in this Twiki) to my local ACCESS area.

Working directory in ACCESS: ~/fladias/CMSSW_3_8_6/src/ALPGEN8TeV

  • What I need to do for running with this package:

  • crab_genAlpgen_grid.cfg - From the CRAB configuration file, I have to change:
    • total_number_of_events
    • events_per_job
    • Output files
      ### The output files (comma separated list)
      output_file=w1j_0ptw100.wgt, w1j_0ptw100.par, w1j_0ptw100.unw, w1j_0ptw100_unw.par
    • Set the storage element and copy mode:
      copy_data = 1
      storage_element = T2_BR_SPRACE
      user_remote_dir = FlaviaAlpgenTest
    • Set the input files:
      additional_input_files=alpgen.input, w1j_0ptw100.grid2

  • alpgen.input - Take care to change the input card.

  • runAlpgen.sh - Change the name of the executable in the line: export ALPGEN_EXECUTABLE=wjetgen


Run Alpgen with a few (60.000) events for cross-section/efficiency test. Process chosen: w0j_0ptw100

TASK - Script to change these parameters in the script to run Alpgen for production.

-- FlaviaDias - 09 Dec 2010

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Topic revision: r2 - 2010-12-09 - FlaviaDias

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