Computer system including a promise array

Details Computer system including a promise array Computer system including a promise array

2006-10-10

2006-10-10

Bataille, Pierre-Michel (Department: 2186)

Electrical computers and digital processing systems: memory

Storage accessing and control

Hierarchical memories

C711S158000, C709S245000

Reexamination Certificate

active

07120756

ABSTRACT:
A computer system includes a system memory and a plurality of active devices configured to access data associated with the system memory through an address network and a data network. Each of the active devices may be configured to cache data, and may include a promise array. Transitions in ownership of the given block may occur at a different time than the time at which the access right to the given block is changed. The promise array of an active device is provided to store information identifying an unreceived data packet to be conveyed to another device in response to a pending transaction to a cache block for which the active device is an owner. Each active device may be configured to have at most one outstanding transaction for each cache block.

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