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

Author

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

Author_Institution

Systemsoftware & Distributed Syst., Trier Univ.

Volume

2

fYear

2006

fDate

Oct. 29 2006-Nov. 1 2006

Firstpage

865

Lastpage

872

Abstract

The ATLAS Event Monitoring service (Emon) is a CORBA-based Peer-to-Peer data distribution framework, which has been implemented for CERN´s forthcoming particle physics experiment ATLAS. Its purpose is to sample collision events from various stages of the data flow chain and efficiently distribute them to the users. Starting from a centralized predecessor version, this paper discusses various technical details of the current implementation along with a comparative study of communication complexity and scalability and a presentation of practical test results obtained during the HLT/DAQ large scale and performance test period in July 2005. Apart from that, a recent addition allowing users the parallel analysis of event data will be presented.

Keywords

data communication; high energy physics instrumentation computing; nuclear electronics; peer-to-peer computing; ATLAS experiment; CERN; Event Monitoring Service; HLT/DAQ; collision events; communication complexity; high energy physics; parallel analysis; peer-to-peer data distribution; performance testing; scalability; Application software; Data acquisition; Data analysis; Event detection; Large-scale systems; Monitoring; Peer to peer computing; Sampling methods; Scalability; Testing;

fLanguage

English

Publisher

ieee

Conference_Titel

Nuclear Science Symposium Conference Record, 2006. IEEE

Conference_Location

San Diego, CA

ISSN

1095-7863

Print_ISBN

1-4244-0560-2

Electronic_ISBN

1095-7863

Type

conf

DOI

10.1109/NSSMIC.2006.355986

Filename

4179140