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Non-uniform memory access (NUMA) data processing system having remote memory cache incorporated within system memory

  • US 6,760,809 B2
  • Filed: 06/21/2001
  • Issued: 07/06/2004
  • Est. Priority Date: 06/21/2001
  • Status: Expired due to Fees
First Claim
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1. A non-uniform memory access (NUMA) computer system, comprising:

  • a node interconnect; and

    a first node and a second node coupled to said node interconnect for communication of data therebetween, wherein;

    said first node includes a first system memory at a lowest level of volatile memory within said first node; and

    said second node includes at least one processing unit coupled to a second memory hierarchy within said second node, said second memory hierarchy including one or more upper levels of volatile memory and a second system memory at a lowest level of volatile memory within said second node, wherein said second system memory includes;

    a first set of storage locations allocated as a remote memory cache for storing data corresponding to data resident in said first system memory for which the first node is the home node;

    a remote memory directory specifying contents of said remote memory cache; and

    a second set of storage locations allocated for storage of data for which the second node is the home node.

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