Details

Autor(en) / Beteiligte

• Falabella, Antonio
• Manzali, Matteo
• Giacomini, Francesco
• Marconi, Umberto
• Voneki, Balasz
• Neufeld, Niko
• Valat, Sebastian

Titel

Large-scale DAQ tests for the LHCb upgrade

Ist Teil von

• 2016 IEEE-NPSS Real Time Conference (RT), 2016, p.1-2

Ort / Verlag

IEEE

Erscheinungsjahr

2016

Quelle

IEEE Electronic Library (IEL)

Beschreibungen/Notizen

• 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.