Non-uniform memory access (numa) data processing system...

Details Non-uniform memory access (numa) data processing system... Non-uniform memory access (numa) data processing system...

G - Physics

06

F

G06F 12/12 (2006.01) G06F 12/08 (2006.01) G06F 13/16 (2006.01)

Patent

CA 2291401

A non-uniform memory access (NUMA) computer system includes first and second processing nodes that are coupled together. The first processing node includes a system memory and first and second processors that each have a respective associated cache hierarchy. The second processing node includes at least a third processor and a system memory. If the cache hierarchy of the first processor holds an unmodified copy of a cache line and receives a request for the cache line from the third processor, the cache hierarchy of the first processor sources the requested cache line to the third processor and retains a copy of the cache line in a Recent coherency state from which the cache hierarchy of the first processor can source the cache line in response to subsequent requests.

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