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The LHCb Collaboration is preparing a major upgrade of the detector and the Data Acquisition (DAQ) to be installed during the LHC-LS2. The new Event Builder computing farm for the DAQ requires about 500 nodes, and have to be capable of transporting order of 32 Tbps. The requested performance can possibly be achieved using high-bandwidth data-centre switches and commodity hardware. Several studies...
Amongst link technologies, InfiniBand has gained wide acceptance in the framework of High Performance Com puting (HPC), due to its high bandwidth and in particular to its low latency. Since InfiniBand is very flexible, supporting several kinds of messages, it is suitable, in principle, not only for HPC, but also for the data acquisition systems of High Energy Physics (HEP) Experiments. In order to...
In the prospect of employing 10 gigabit Ethernet as networking technology for online systems and offline data analysis centers of high energy physics experiments, we performed a series of measurements with point-to-point data transfers over 10 gigabit Ethernet links, using the network interface cards mounted on the PCI-Express bus of commodity PCs both as transmitters and receivers. In real operating...
The LHCb experiment at CERN will have an online trigger farm composed of up to 2000 PCs. In order to monitor and control each PC and to supervise the overall status of the farm, a Farm Monitoring and Control System (FMC) was developed. The FMC is based on DIM (Distributed Information Management System) as network communication layer, it is accessible both through a command line interface and through...
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