Running MadGraph / MadEvent in the parallel mode on your own cluster

If you have a central data disk

The current MadGraph / MadEvent version assumes all the scripts are ran from a central data disk mounted on all cluster nodes (e.g. a home directory). If you have access to such a central disk, read the following. If not, please refer to the last section. Some scripts may assume the existence of a specific queue called

madgraph

. If you have difficulties with these, simply create this queue on your cluster (this can help to limit the number of CPU for example), or remove the =-q madgraph= options in the

run_XXX

scripts located in

bin

.

If you have a PBS-compatible batch managing system (PBSPro, !OpenPBS, Torque, ...)

This is the easiest case since the default configuration should work out of the box using the

qsub

command (and

qstat

and/or

qdel

if the whole web interface is present). There is nothing special to do, just run the

generate_events

script as usual and select parallel mode.

If you use the Condor batch managing system

A "translation" script exists (see attachments of this page) to emulate the

qsub

command using a Condor syntax. This script should be tuned to fit your Condor installation and put in a directory of the =$PATH= variable.

If you use another batch managing system

This is the most complicated case, you can either:

• Modify manually the

  survey
  

,

refine

and

run_XXX

scripts located in the

bin

directory to force them to use your submission system.

• Write a "translation" script like the one available for Condor (see attachment) to emulate the

  qsub
  

command. If you manage to do this and want to share your script to help other MadGraph / MadEvent users, please feel free to edit this page.

If you do not have a central data disk

We are aware the central disk solution may be inefficient or even impossible to set up on large clusters. We are thus working on a permanent solution. In the meantime, an intermediate solution using temporary directory and the

scp

command exists. Please contact directly Pavel Denim (pavel.demin_AT_uclouvain.be) for more information on this.

-- Main.MichelHerquet - 02 Mar 2009