Patents by Inventor Thoung Quang Truong

Thoung Quang Truong 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 directory-based coherence with distributed directory management
    Patent number: 7363432
    Abstract: A system for cache coherency comprises a memory. The memory comprises a plurality of data items and a plurality of directory information items, each data item uniquely associated with one of the plurality of directory information items. Each of the plurality of data items is configured in accordance with one of a plurality of access modes. Each of the plurality of directory information items comprises indicia of the access mode of its associated data item. A multiplexer couples to the memory and comprises a multiplex ratio. A plurality of buffers couple to the multiplexer and to the memory. The multiplex ratio is a function of the number of buffers in the plurality of buffers. A plurality of multiplexer/demultiplexers (MDMs) each uniquely couple to a different one of the plurality of buffers. A plurality of processing elements couple to the memory; each of the processing elements uniquely couples in a point-to-point connection to a different one of the plurality of MDMs.
    Type: Grant
    Filed: March 25, 2004
    Date of Patent: April 22, 2008
    Assignee: International Business Machines Corporation
    Inventors: Michael Karl Gschwind, Charles Ray Johns, Thoung Quang Truong
  • Method and apparatus for directory-based coherence with distributed directory management utilizing prefetch caches
    Patent number: 7321956
    Abstract: A system for cache coherency comprises a memory. The memory comprises a plurality of data items and a plurality of directory information items, each data item uniquely associated with one of the plurality of directory information items. Each of the plurality of data items is configured in accordance with one of a plurality of access modes. Each of the plurality of directory information items comprises indicia of the access mode of its associated data item. A multiplexer couples to the memory and comprises a multiplex ratio. A plurality of buffers couple to the multiplexer and to the memory. The multiplex ratio is a function of the number of buffers in the plurality of buffers. A plurality of multiplexer/demultiplexers (MDMs) each uniquely couple to a different one of the plurality of buffers. A plurality of processing elements couple to the memory; each of the processing elements uniquely couples in a point-to-point connection to a different one of the plurality of MDMs.
    Type: Grant
    Filed: March 25, 2004
    Date of Patent: January 22, 2008
    Assignee: International Business Machines Corporation
    Inventors: Michael Karl Gschwind, Charles Ray Johns, Thoung Quang Truong