Parallel processing computer system interconnections utilizing u

Details Parallel processing computer system interconnections utilizing u Parallel processing computer system interconnections utilizing u

1993-12-15

1996-11-19

Lee, Thomas C.

Boots, shoes, and leggings

395800, 39520007, 395475, 3642407, 364229, 3649314, G06F 1300, G06F 1314

Patent

active

055772048

ABSTRACT:
There is disclosed a shared multiprocessing system with several nodes, or processing units, interconnected together for communication purposes by a dual channeled crossbar switch. Several such multichannel crossbar switches can be linked together to form a large cohesive processing system where processing units from one node can access memory from another node on the same crossbar or from another node on a different crossbar. The interconnection between crossbars is accomplished by a circular ring. In operation, the system allows for long memory latencies while not increasing the length of short (local) memory latencies. This is accomplished by storing the bulk of long latency requests at the local processing unit and only sending the request when there is an actual availability of communication capacity to handle the long latency request.

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The Design and Analysis of DASH: A Scalable Directory-Based Multiprocessor, Daniel Lenoski, Dec. 1991.

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