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The Cache Coherence Protocol of the Data Diffusion Machine
註釋The machine is scalable in that there may be any number of levels in the hierarchy. Only a few levels are necessary in practice for a very large number of processors. Most memory requests are satisfied locally. Requests requiring remote access generally cause only a limited amount of traffic over a limited part of the machine, and are satisfied within a small time that is logarithmic to the number of processors. Although designed particularly to provide good support for the parallel execution of logic programs, the architecture is very general in that it does not assume any particular processor, language or class of application."