Patents by Inventor Jim A. Kahle

Jim A. Kahle 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 system and apparatus for instruction execution tracing with out of order processors
    Patent number: 6681321
    Abstract: A method, system and apparatus for instruction execution tracing with out of order speculative processors. Information corresponding to the state of an instruction cache and a data cache is stored in a trace storage device along with information corresponding to instructions sequenced and executed by the processor. When a cache load is necessary, updated cache information is stored in the trace storage device. Thereby, the state of the cache at all times during execution of instructions may be known from the information stored in the trace storage device. Additionally, the particular instructions sequenced and executed is known from the sequenced instructions information and the executed instructions information stored in the trace storage device. Hence the instruction execution stream may be reconstructed from the information stored in the trace storage device.
    Type: Grant
    Filed: April 20, 2000
    Date of Patent: January 20, 2004
    Assignee: International Business Machines Corporation
    Inventors: Jason N. Dale, Jim A. Kahle, Douglas R. Logan, Alex E. Mericas, William J. Starke, Philip L. Vitale