Multi-processor system with hierarchy buffer storages

Details Multi-processor system with hierarchy buffer storages Multi-processor system with hierarchy buffer storages

1984-12-27

1987-06-23

Williams, Archie E.

Boots, shoes, and leggings

G06F 1300

Patent

active

046758119

ABSTRACT:
A multi-processor system includes a main storage and buffer storages of multi-layered hierarchy, which share the main storage. A plurality of storage controllers, each of which contains a first buffer storage, are connected with the main storage and at least one processor containing a second buffer storage is connected with each of said storage controllers. The directory of the first buffer storage contains an exclusive bit indicating whether the data existing in the first buffer storage are only one copy from the main storage or not and thus reduces the repetition of requests for the data coincidence control between different storage controllers. Each of said storage controllers contains a directory having the same content as that of the directory of the second buffer storage of the associated processor and effects the data coincidence control between different processors for store request produced in the processors.

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