The ATLAS Event Monitoring Service—Peer-to-Peer Data Distribution in High-Energy Physics

Author

Scholtes, Ingo ; Kolos, Serguei ; Zema, Pasquale Federico

Author_Institution

Dept. of Comput. Sci., Trier Univ., Trier

Volume

55

Issue

3

fYear

2008

fDate

6/1/2008 12:00:00 AM

Firstpage

1610

Lastpage

1620

Abstract

The ATLAS event monitoring service (Emon) is a CORBA-based peer-to-peer data distribution framework, which has been implemented for ATLAS - one of CERN´s forthcoming particle physics experiments. Its purpose is to sample collision event data from various stages of the data flow chain and efficiently distribute them to the users. This paper discusses various technical details of the current peer-to-peer-based implementation. A special focus lies on dependability and the provision of scalability and predictable performance. A comparative study of message complexity and scalability as well as practical test results obtained during the HLT/DAQ large scale and performance test periods in July 2005 and November 2006 will be presented. Apart from that, a recent addition that facilitates the parallel analysis of event data on a set of machines will be presented.

Keywords

communication complexity; data acquisition; high energy physics instrumentation computing; peer-to-peer computing; position sensitive particle detectors; ATLAS Event Monitoring service; CERN; LHC; data acquisition; message complexity; parallel analysis; peer-to-peer data distribution; peer-to-peer-based implementation; Data acquisition; Data analysis; Detectors; Event detection; Large Hadron Collider; Monitoring; Peer to peer computing; Physics; Scalability; Testing; ATLAS; LHC; data acquisition; high-energy physics; monitoring; peer-to-peer;

fLanguage

English

Journal_Title

Nuclear Science, IEEE Transactions on

Publisher

ieee

ISSN

0018-9499

Type

jour

DOI

10.1109/TNS.2008.924057

Filename

4545206