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KSR-1 (Colorado)
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Cache Only Machines "only" have cache and are typified by the Kendall Square KSR-1,2 machines. Although this company is no longer in business, the basic architecture is interesting and could still be used in future important machines
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In this class of machine one has a NUMA architecture with memory attached to a given processor being lower access cost
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In simplest COMA architectures, think of this memory as the cache and when needed migrate data to this cache
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However in conventional machines, all data has a natural "original home"; in (simple) COMA, the home of the data moves when it is accessed and one hopes that data is "attracted" through access to "correct" processor
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