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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...
The LHCb experiment at CERN will have an on-line 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 distributed information management (DIM) system as network communication layer, it is accessible both through a command line interface and through...
Scope of this paper is to report on the measurements performed to test the reliability of high rate data transmission over copper gigabit Ethernet, by using commodity hardware, for the LHCb online system. The reliability of the system is crucial for the functioning of the software trigger layers of the LHCb experiment. The technological challenge in the system implementation consists of handling the...
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