Mar 21 – 27, 2009
Europe/Prague timezone

Parallel computing of ATLAS data with PROOF at the LRZ Munich

Mar 23, 2009, 8:00 AM


Prague Congress Centre 5. května 65, 140 00 Prague 4, Czech Republic
Board: Monday 096
poster Distributed Processing and Analysis Poster session


Dr Philippe Calfayan (Ludwig-Maximilians-University Munich)


The PROOF (Parallel ROOT Facility) library is designed to perform parallelized ROOT-based analyses with a heterogeneous cluster of computers. The installation, configuration and monitoring of PROOF have been carried out using the Grid-Computing environments dedicated to the ATLAS experiment. A PROOF cluster hosted at the Leibniz Rechenzentrum (LRZ) and consisting of a scalable amount of worker nodes has been exploited in order to conduct the performance tests in the case of interactive ATLAS analyses. Scenarios of various complexities have been considered to exercise PROOF with ATLAS data and evaluate its utilization in actual conditions. The investigation of the PROOF performance has been done by varying the number of parallelized processing units, the amount of simultaneous users, and the type of the file storage. Strategies based on local files, dCache, and Lustre have been compared.
Presentation type (oral | poster) poster

Primary author

Dr Philippe Calfayan (Ludwig-Maximilians-University Munich)


Presentation materials