Speaker
Dr
Xavier Espinal
(PIC/IFAE)
Description
In preparation for first data at the LHC, a series of Data Challenges, of
increasing scale and complexity, have been performed. Large quantities of
simulated data have been produced on three different Grids, integrated into
the ATLAS production system. During 2006, the emphasis moved towards providing
stable continuous production, as is required in the immediate run-up to first
data, and thereafter. Here, we discuss the experience of the production done
on EGEE resources, using submission based on the gLite WMS, CondorG and a
system using Condor glide-in's.
The overall walltime efficiency of around 90% is largely independant of the
submission method, and the dominant source of wasted cpu comes from data
handling issues. The efficiency of grid job submission is significantly worse
than this, and the glide-in method benefits greatly from factorising this out.
| Submitted on behalf of Collaboration (ex, BaBar, ATLAS) | ATLAS |
|---|
