05604882 is referenced by 54 patents and cites 24 patents.

A multiprocessor in which processing units have local private caches and records are stored on at least a first global storage control unit. An interconnection system provides node to node data and synchronization communications between processing units and the first global storage control unit. The global storage control unit includes a coherency controller for tracking each instance of records owned by the global storage control unit currently resident on the processing units. Each processing unit executes a cache management process for freeing intervals of the local cache for the processing unit. Upon identification of an interval, the processing unit sends empty notification to the global storage control unit owning the record an instance of which was resident in the interval. Thereafter the interval is marked as invalid in a cache directory for the processing unit and indicia for the instance is deleted from a coherency directory for the global storage control unit.

Title
System and method for empty notification from peer cache units to global storage control unit in a multiprocessor data processing system
Application Number
8/113554
Publication Number
5604882
Application Date
August 27, 1993
Publication Date
February 18, 1997
Inventor
Lishing Liu
Pleasantville
NY, US
Frederick J Ziegler
Rochester
MN, US
Donald F Baldus
Mazeppa
MN, US
John C Willis
Rochester
MN, US
Russell D Hoover
Rochester
MN, US
Agent
Andrew J Dillon
Owen Gamon
Assignee
International Business Machines Corporation
NY, US
IPC
G06F 12/08
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