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August 31, 1988


By CBR Staff Writer

Concurrent Computer Corp, in process of being acquired by and handing on its name to Massachusetts Computer Corp, has come up with a facility that enables up to eight of its top-end 3280MPS machines, already vast master-plus-multiple slave complexes, to be interconnected and to share data between multiple co-operating programs running on the various complexes. Called the Distributed Bus Link, the high-speed bus connects the multiprocessor complexes to shared memory, and it is possible to break tasks into independent co-operating sub-tasks that may improve performance, load distribution, data sharing and reliability in applications such as simulation and transaction processing. Each of the eight 3280MPS complexes on the bus can deliver up to 33.8 MIPS. The physical Distributed Bus Link is a 15 by 17 board that that links the 3280MPS machines to the common shared memory bis, and pairs of the boards can be used to pass memory operations selectively between specific 3280MPS systems in an array. It also supports a shadow memory feature for a degree of fault-tolerance, enabling redundancy of 64Kb memory segments from one system to another. The address range is 32 bits – 4Gb, and the system also supports cache coherency between systems, and address translation and mapping. First commercial ships are set for November; no prices.

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