Title :
Computer modeling the ATLAS trigger/DAQ system performance
Author :
Cranfield, Robert ; Golonka, Piotr ; Kaczmarska, Anna ; Korcyl, Krzysztof ; Vermeulen, Jos ; Wheeler, Sarah
Author_Institution :
Univ. Coll. London, UK
fDate :
6/1/2004 12:00:00 AM
Abstract :
In this paper, simulation ("computer modeling") of the Trigger/data acquisition (DAQ) system of the ATLAS experiment at the LHC accelerator is discussed. The system will consist of a few thousand end nodes, which are interconnected by a large Ethernet network. The nodes will run various applications under the Linux operating system (OS). Predictions for the latency, throughput and queue development in various places have been obtained. Results are presented with respect to the application of traffic shaping to reduce the probability of possible frame loss (which may cause severe performance degradation).
Keywords :
Unix; data acquisition; discrete event simulation; local area networks; position sensitive particle detectors; probability; queueing theory; traffic control; ATLAS Trigger/DAQ system; Ethernet network; LHC accelerator; Linux operating system; computer modeling; data acquisition; discrete-event simulation; frame loss; latency; local area network; probability; queue development; queuing analysis; throughput; traffic control; traffic shaping; Application software; Computational modeling; Computer simulation; Data acquisition; Delay; Ethernet networks; Large Hadron Collider; Linux; Operating systems; System performance; Data acquisition; discrete-event simulation; local area network; modeling; queuing analysis; traffic control;
Journal_Title :
Nuclear Science, IEEE Transactions on
DOI :
10.1109/TNS.2004.828825
