G - Physics – 06 – F
Patent
G - Physics
06
F
G06F 15/173 (2006.01) G06F 15/17 (2006.01)
Patent
CA 2280172
A non-uniform memory access (NUMA) computer system includes at least a local processing node and a remote processing node that are each coupled to a node interconnect. The local processing node includes at least a processor and a local system memory, and the remote processing node includes at least a processor having an associated cache memory, a local system memory, and a node controller that are each coupled to a local interconnect. In response to receipt by the node controller of a request transaction transmitted from the local processing node via the node interconnect, the node controller at the remote processing node issues the request transaction on the local interconnect. If the request transaction receives a retry response at the remote processing node, the node controller does not immediately return the retry response to the local processing node. Instead, the node controller reissues the request transaction on the local interconnect at least once, thus giving the request transaction another opportunity to complete successfully. In one embodiment, the request transaction is reissued on the local interconnect of the remote processing node until a response other than retry is received or until a retry limit is reached.
Baumgartner Yoanna
Elman Annan
Harris Glen Douglas
International Business Machines Corporation
Rosen Arnold
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