Speaker
Johannes Elmsheuser
(Ludwig-Maximilians-Univ. Muenchen (DE))
Description
The ATLAS experiment at the LHC at CERN is recording and simulating
several 10's of PetaBytes of data per year. To analyse these data the
ATLAS experiment has developed and operates a mature and stable
distributed analysis (DA) service on the Worldwide LHC Computing Grid.
The service is actively used: more than 1400 users have submitted jobs
in the year 2011 and a total of more 1 million jobs run every
week. Users are provided with a suite of tools to submit Athena, ROOT
or generic jobs to the grid, and the PanDA workload management system
is responsible for their execution. The reliability of the DA service
is high but steadily improving; grid sites are continually validated
against a set of standard tests, and a dedicated team of expert
shifters provides user support and communicates user problems to the
sites. This talk will review the state of the DA tools and services,
summarize the past year of distributed analysis activity, and present
the directions for future improvements to the system.
Author
Collaboration Atlas
(Atlas)
