ATLAS TDAQ DataFlow network architecture analysis and upgrade proposal

Author

Stancu, Stefan ; Ciobotaru, Matei ; Korcyl, Krzysztof

Author_Institution

California Univ., Irvine, CA, USA

Volume

53

Issue

3

fYear

2006

fDate

6/1/2006 12:00:00 AM

Firstpage

826

Lastpage

833

Abstract

The real-time operation of the ATLAS DataFlow system is highly dependent on the performance of the Gigabit Ethernet network interconnecting its components (≈800 end nodes). After examining the functional and performance requirements of the network, several design alternatives (with respect to traffic repartition on core devices and available concentration technologies) are presented and analyzed. We introduce the use of 10 Gigabit Ethernet as a flexible and simple technology for concentrating traffic. Network testing equipment as well as discrete event model simulations are used to assess the performance of various implementation options. Based on performance, fault tolerance and flexibility considerations a preferred architecture is proposed for implementation.

Keywords

data acquisition; discrete event simulation; fault tolerance; high energy physics instrumentation computing; local area networks; nuclear electronics; performance evaluation; position sensitive particle detectors; real-time systems; ATLAS TDAQ dataflow network architecture; core devices; data acquisition; discrete event model simulations; fault tolerance; gigabit Ethernet network; network testing equipment; real-time operation; traffic repartition; Data analysis; Discrete event simulation; Ethernet networks; Fault tolerance; Performance analysis; Proposals; Real time systems; Telecommunication traffic; Testing; Traffic control; 10 Gigabit Ethernet; data acquisition; modeling; network architectures;

fLanguage

English

Journal_Title

Nuclear Science, IEEE Transactions on

Publisher

ieee

ISSN

0018-9499

Type

jour

DOI

10.1109/TNS.2006.873302

Filename

1644948