The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 01, 2005
Filed:
Jan. 24, 2001
Simon C. Steely, Jr., Hudson, NH (US);
Stephen Van Doren, Northborough, MA (US);
Madhumitra Sharma, Shrewsbury, MA (US);
Simon C. Steely, Jr., Hudson, NH (US);
Stephen Van Doren, Northborough, MA (US);
Madhumitra Sharma, Shrewsbury, MA (US);
Hewlett-Packard Development Company, L.P., Houston, TX (US);
Abstract
A distributed processing system includes a cache coherency mechanism that essentially encodes network routing information into sectored presence bits. The mechanism organizes the sectored presence bits as one or more arbitration masks that system switches decode and use directly to route invalidate messages through one or more higher levels of the system. The lower level or levels of the system use local routing mechanisms, such as local directories, to direct the invalidate messages to the individual processors that are holding the data of interest.