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Operating experience with a VMEbus multiprocessor system for data acquisition and reduction in nuclear physics

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2 Author(s)
Kutt, P.H. ; Dept. of Phys., Pennsylvania Univ., Philadelphia, PA, USA ; Balamuth, D.P.

Summary form only given, as follows. A multiprocessor system based on commercially available VMEbus components has been developed for the acquisition and reduction of event-mode data in nuclear physics experiments. The system contains seven 68000 CPUs and 14 Mbyte of memory. A minimal operating system handles data transfer and task allocation, and a compiler for a specially designed event analysis language produces code for the processors. The system has been in operation for four years at the University of Pennsylvania Tandem Accelerator Laboratory. Computation rates over three times that of a MicroVAX II have been achieved at a fraction of the cost. The use of WORM optical disks for event recording allows the processing of gigabyte data sets without operator intervention. A more powerful system is being planned which will make use of recently developed RISC (reduced instruction set computer) processors to obtain an order of magnitude increase in computing power per node

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Nuclear Science, IEEE Transactions on  (Volume:36 ,  Issue: 5 )