Patent ID: 7003631

Claim:
A system comprising: a plurality of nodes, in which a first node has one or more coherent agents coupled to a first interconnect, wherein when a coherency block located in the first node is accessed by a transaction on the first interconnect for transmission to a second node that requested the access, ownership for the coherency block in the first node is transferred as an intranode ownership responsive to transmission of an address of the coherency block on the first interconnect; and a second interconnect to which the plurality of nodes are coupled, wherein ownership of the coherency block from the first node to the second node is transferred on the second interconnect as an internode ownership responsive to a data fill command for the coherency block from the first node, and wherein intranode ownership transfer is achieved by address transfer on the first interconnect and internode ownership transfer is achieved by data transfer on the second interconnect to allow use of a non-retry-capable interconnect for the first interconnect.