Patent ID: 6993631
Filing Date: 2006-01-31
Classification: G06F,Y10S

Abstract:
1. A node comprising: a plurality of coherent agents; a memory bridge coupled to the plurality of coherent agents and configured to fetch a first coherency block from a memory coupled to a second node in response to a transaction generated by a first agent of the plurality of coherent agents; and a first cache accessible by the plurality of coherent agents, wherein the first cache is designated to store a state of the first coherency block recorded for the node by the second node in response to the fetch from the memory bridge and wherein when the first cache evicts the first coherency block and if the state in the first cache for the first coherency block is modified, the first cache is configured to cause the first coherency block to be evicted from the plurality of coherent agents and to cause the first coherency block to be returned to the second node.