Patent ID: 6574659
Filing Date: 2003-06-03
Classification: G06F

Abstract:
A computer network comprising:a network infrastructure; and a first plurality of nodes coupled to said network infrastructure, wherein a first node of said first plurality of nodes is configured to service a memory access request received via said network infrastructure for a memory block of said first node, said first node having no centralized directory for tracking states of said memory block in said first plurality of nodes other than said first node, wherein said memory access request is received from a second node of said first plurality of nodes, wherein said first node is configured to send a first request for a valid copy of said memory block to a second plurality of nodes in said computer network in response to detecting that said memory access request is a read request and said first node does not have a valid copy of said memory block, wherein said second plurality of nodes includes said first plurality of nodes excepting said first node and said second node.