Non-uniform memory access (NUMA) data processing system that dec

Details Non-uniform memory access (NUMA) data processing system that dec Non-uniform memory access (NUMA) data processing system that dec

1998-08-17

2000-07-04

Follansbee, John A.

Electrical computers and digital processing systems: memory

Storage accessing and control

Hierarchical memories

711122, 711129, 711130, 712 28, G06F 1216

Patent

active

060852933

ABSTRACT:
A non-uniform memory access (NUMA) computer system includes a node interconnect and a plurality of processing nodes that each contain at least one processor, a local interconnect, a local system memory, and a node controller coupled to both a respective local interconnect and the node interconnect. According to the method of the present invention, a communication transaction is transmitted on the node interconnect from a local processing node to a remote processing node. In response to receipt of the communication transaction by the remote processing node, a response including a coherency response field is transmitted on the node interconnect from the remote processing node to the local processing node. In response to receipt of the response at the local processing node, a request is issued on the local interconnect of the local processing node concurrently with a determination of a coherency response indicated by the coherency response field.

REFERENCES:
patent: 5673413 (1997-09-01), Deshpande et al.
patent: 5878268 (1999-03-01), Hagersten
patent: 5887146 (1999-03-01), Baxter et al.

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