A first look at 100 Gbps LAN technologies, with an emphasis on future DAQ applications

Apr 13, 2015, 3:45 PM
C210 (C210)



oral presentation Track6: Facilities, Infrastructure, Network Track 6 Session


Adam Jedrzej Otto (Ministere des affaires etrangeres et europeennes (FR))


The LHCb experiment is preparing a major upgrade of both the detector and the data acquisition system. A system capable of transporting up to 50 Tbps of data will be required. This can only be achieved in a manageable way using 100 Gbps links. Such links recently became available also in the servers, while they have been available between switches already for a while. We present first measurements with such links (InfiniBand EDR, Ethernet 100 GbE) both using standard benchmarks and using a prototype event-building application. We analyse the CPU load effects by using Remote DMA technologies, and we also show comparison with previous tests on 40 G equipment.

Primary authors

Adam Jedrzej Otto (Ministere des affaires etrangeres et europeennes (FR)) Daniel Hugo Campora Perez (CERN) Flavio Pisani (Universita e INFN, Roma I (IT)) Niko Neufeld (CERN) Rainer Schwemmer (CERN)

Presentation materials