Patents by Inventor Leonard Mark Widra

Leonard Mark Widra has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • System and method for memory page migration in a multi-processor computer
    Patent number: 6453408
    Abstract: A method for controlling memory page migration in a parallel processor computer (10) is provided that comprises requesting access to a memory page (14) by a requester processor (206). The method then determines whether the requester processor (206) is a local processor or a remote processor. The method then increments a local access counter (52) and identifies the local access counter (52) as an incremented counter in response to determining that the requester processor (206) is a local processor. If the requester processor (206) is determined to be a remote processor, the method increments a remote access counter (54) and identifies the remote access counter (54) as the incremented counter. The method next sets a threshold processing indicator to a positive value if the incremented counter exceeds a value threshold (58) or if a difference between the local access counter (52) and the remote access counter (54) exceeds a difference threshold (62).
    Type: Grant
    Filed: September 30, 1999
    Date of Patent: September 17, 2002
    Assignee: Silicon Graphics, Inc.
    Inventors: James A. Stuart Fiske, David Edward McCracken, Leonard Mark Widra