Patents Represented by Attorney Hugh Jaeger

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  • Shared two level cache including apparatus for maintaining storage consistency
    Patent number: 5276848
    Abstract: A multilevel cache buffer for a multiprocessor system in which each processor has a level one cache storage unit which interfaces with a level two cache unit and main storage unit shared by all processors. The multiprocessors share the level two cache according to a priority algorithm. When data in the level two cache is updated, corresponding data in level one caches is invalidated until it is updated.
    Type: Grant
    Filed: August 20, 1991
    Date of Patent: January 4, 1994
    Assignee: International Business Machines Corporation
    Inventors: Patrick W. Gallagher, Steven L. Gregor, Stephen M. Reeve