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Multi-node computer system in which networks in different nodes implement different conveyance modes

  • US 7,225,298 B2
  • Filed: 03/31/2004
  • Issued: 05/29/2007
  • Est. Priority Date: 04/11/2003
  • Status: Active Grant
First Claim
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1. A system, comprising:

  • a plurality of nodes, wherein each node of the plurality of nodes includes a plurality of active devices, one or more memory subsystems, and an address network that is configured to couple the plurality of active devices and the one or more memory subsystems together; and

    an inter-node network coupled to the address network and configured to convey communications between the plurality of nodes;

    wherein each address network is independently configured to convey address packets specifying a coherency unit using a broadcast mode and a point-to-point mode; and

    wherein each address network is further configured to independently select one of the broadcast mode and the point-to-point mode dependent upon whether the coherency unit maps to any of the one or more memory subsystems included in the node.

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