Application of the Scalable Coherent Interface to Data Acquisition at LHC
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چکیده
The RD24 project has designed SCI node interface hardware and software to test the applicability of SCI to Data Acquisition Systems. The results demonstrate working SCI protocols, very high bandwidth and scalability. First samples of the SCI NodeChipTM ASIC were delivered to CERN in March 1993. Interconnected via SCI cables, two nodes were used to form a simple SCI ringlet. First SCI traffic, at 500 MB/s link speed, was observed on 16.4.93 at CERN. Using a diagnostic hardware and software set for SCI, we have verified the correctness of SCI packets and protocols. RD24 has designed and completed: a RISC processor node with FiFo interface and a combined memory/ DMA node. Work continues on an SCI-Futurebus+ interface, a TURBOchannel interface, an Apple Quadra interface, an SCI to Fastbus interface and a bridge to transmit SCI over coaxial cables or optical fibers. SCI-based architectures have been simulated. The results predict feasibility of a scalable SCI event builder, based on SCI switches with simulated throughput up to 40 GBytes/s.
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تاریخ انتشار 1993