NA62 Monte Carlo Simulations

This wiki describes how to set up and distribute the NA62 Monte Carlo simulation code.

Software

• Test tarball from Antonino Sergi: NA62MC.tar.zip
• Job submission and output management system code components are held on and SVN repo at IC (access list: Dan, Janusz, Stuart). The files attached to this wiki are not the latest versions.

Code compilation

• Versions:
  • v4 - Contains bug in the MC which Tonino spotted after giving us the tar ball
  • v5 - Installed by Janusz on May 10 (see table below)
• Unpack tarball to NA62MC
• Fix libs path problems in GNUMakefile-s (Generator/ and Beam/)
• Make changes to env.sh: source 'offline' environment; clear XAWLIBS variable
• Rearrange paths (move system paths after NA62-specific paths)
• Type 'make' and be patient

Code distribution

• Create tarballs for geant4, root, X11 and sw (CreateTarballs.sh)
• Run special job (with an SGM Admin role) to wget and unpack these tarballs on sites (InstallSoftware.sh)
• Run test job

Job submission

• Run parameters given in the StandardRun.mac file: run number, number of events, random seed, root output file name
• Job environment parameters are set by sourcing the na62jobenv.sh script created by InstallSoftware.sh
• The .mac is modified using sed on the worker node to modify paths to LAV matrix files, which are installed in the software area by InstallSoftware.sh
• The actual job script is attached (needs editing and streamlining)

Automated jobs scripts creator

There's now a suite of tools for submitting jobs either one-by-one or in bulk. Jobs submitted via this interface have the advantage that everything about the jobs (input and output files, scripts, run parameters and statistics) are archived for later reference.

• Toolbox located at: http://ppewww.physics.gla.ac.uk/~protopop/na62/mc/tools/scripter.php
• Submitted jobs list (with a MySQL DB backend) is located here
• Jobs status iPhone webapp.
• Production rounds: listed here.

The script creator interface lets the production manager (PM) set up the job parameters (both MC parameters and output options) and choose the number of 'runs' to launch. The scripter prints out in the browser a list of commands that the PM has to run on his grid UI in order to launch the job or production with his credentials. For individual jobs, the PM updates the DB by hand, for multiple runs, it is done via a wrapper script. A cron job periodically updates the list of jobs and files in the DB.

Workflow

Site resources

This is a simple table to keep track of site resources (please update if changes occur):

Site	CPU	WMS Support	Storage	FTS Channel	NA62 S/W
Glasgow					r170
IC					r170
RAL					r170
UCL (Belgium)
Liverpool

Note on s/w labelling: both a NA62 release number (e.g. r170) and a tarball version (e.g. v5) are used. They are kept track of in a dedicated DB table.

To do before next production round

• Install new tarball once it's available from Tonino
• Resolve CERN FTS channel problem GGUS ticket #83133
• Scale scripts for largers submissions

To log problems encountered and solutions use this wiki:

• Troubleshooting page

Links

• NA62 voms server: https://voms.gridpp.ac.uk:8443/voms/na62.vo.gridpp.ac.uk/
• Info from https://www.gridpp.ac.uk/wiki/GridPP_approved_VOs: