Making Samples with d0raw2sim Overlay
=====================================

It is not trivial to make samples with d0raw2sim overlay.  I
recommend you do this on the farms. However, if you want to
make a sample on clued0, here's what you have to do.

0) initialize
  setup D0RunII p14.d0raw2sim.00
  setup sam
  setup mc_runjob

1) setup a working area

   mkdir raw
   cd raw
   mkdir overlay_sample
   mkdir overlay
   mkdir overlay_output


2) get the raw2sim data that will be used for overlaying

  look at http://www-d0.fnal.gov/computing/MonteCarlo/d0raw2sim_processing/  
  to get a list of the files that contain events that have been
  processed by d0raw2sim and stored in sam

  pick your files and make a sam data set definition name pointing to them

  pull the files out of SAM and store them in your overlay_sample area
        cp /home/sceno/mccertification/get.py .
        edit get.py  and change project_definition = "raw2sim_cert" 
        to point to your sam data set definition.
        do "sam run project get.py" at the command prompt
        look in the *.o* output to find the node that the job ran on.
        log onto this node and do "ls /sam/boo" .  copy your  files
        over from this area into your overlay_sample directory.

3) submit the job to overlay this onto your signal sample

   cd to your overlay area
   cp /home/sceno/mccertification/d0raw2sim_overlay_macro .
   edit this macro and   use mc_runjob to execute it