Patents by Inventor Eric E. Conway

Eric E. Conway 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).

  • Method and apparatus for determining CC-NUMA intra-processor delays
    Patent number: 6604060
    Abstract: In a Cache-Coherent Non-Uniform Memory Architecture (CC-NUMA), the time as measured in cycles that it takes for cache control signals to travel between processors (92) sharing an L2 cache (94) differs from the time it takes for those signals to travel between processors (92) not sharing the same L2 cache (94). This difference, or DELTA, is dynamically computed by computing (332) the time it takes for a invalidate cache line cache command to travel between a local processor (92) and a master processor (92). This computation (334) is then made for the time it takes the signal to travel between a remote processor (92) and the master processor (92). The difference (336) is the DELTA value in cycles. This DELTA value can then be utilized to bias delay values when exhaustively testing the interactions among multiple processors in a CC-NUMA environment (180).
    Type: Grant
    Filed: June 29, 2000
    Date of Patent: August 5, 2003
    Assignee: Bull HN Information Systems Inc.
    Inventors: Charles P. Ryan, Eric E. Conway