Method and system for speculatively requesting system data bus f

Details Method and system for speculatively requesting system data bus f Method and system for speculatively requesting system data bus f

1997-04-14

2000-06-20

Cabeca, John W.

Electrical computers and digital processing systems: memory

Storage accessing and control

Hierarchical memories

711118, 711119, 711120, 711130, 711144, 711145, G06F 1208

Patent

active

060789913

ABSTRACT:
A method and system for speculatively sourcing cache memory data within a multiprocessor data-processing system is disclosed. In accordance with the method and system of the present invention, the data-processing system has multiple processing units, each of the processing units including at least one cache memory. In response to a request for data by a first processing unit within the data-processing system, an intervention response is issued from a second processing unit within the data-processing system that contains the requested data. A system bus is then requested for sourcing the requested data from a cache memory within the second processing unit before a combined response from all the processing units returns to the second processing unit.

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