CERN Accelerating science

Published Articles
Title Large-scale DAQ tests for the LHCb upgrade
Author(s) Falabella, Antonio (INFN, CNAF) ; Manzali, Matteo (Ferrara U.) ; Giacomini, Francesco (INFN, CNAF) ; Marconi, Umberto (INFN, Bologna) ; Voneki, Balasz (CERN) ; Neufeld, Niko (CERN) ; Valat, Sebastian (CERN)
Publication 2016
Number of pages 2
In: 20th IEEE-NPSS Real Time Conference, Padua, Italy, 5 - 10 Jun 2016
DOI 10.1109/RTC.2016.7543156
Subject category Detectors and Experimental Techniques
Accelerator/Facility, Experiment CERN LHC ; LHCb
Abstract The Data Acquisition (DAQ) of the LHCb experiment[1] will be upgraded in 2020 to a high-bandwidth trigger-less readout system. In the new DAQ event fragments will be forwarded to the to the Event Builder (EB) computing farm at 40 MHz. Therefore the front-end boards will be connected directly to the EB farm through optical links and PCI Express based interface cards. The EB is requested to provide a total network capacity of 32Tb/s, exploiting about 500 nodes. In order to get the required network capacity we are testing various technology and network protocols on large scale clusters. We developed on this purpose an Event Builder implementation designed for an InfiniBand interconnect infrastructure. We present the results of the measurements performed to evaluate throughput and scalability measurements on HPC scale facilities.

Corresponding record in: Inspire


 Zapis kreiran 2017-05-13, zadnja izmjena 2017-11-17



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