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:
Jul. 03, 2012
Filed:
Feb. 10, 2005
James Stephen Fields, Jr., Austin, TX (US);
Guy Lynn Guthrie, Austin, TX (US);
William John Starke, Round Rock, TX (US);
Jeffrey Adam Stuecheli, Austin, TX (US);
James Stephen Fields, Jr., Austin, TX (US);
Guy Lynn Guthrie, Austin, TX (US);
William John Starke, Round Rock, TX (US);
Jeffrey Adam Stuecheli, Austin, TX (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
In a cache coherent data processing system including at least first and second coherency domains, a master performs a first broadcast of an operation within the cache coherent data processing system that is limited in scope of transmission to the first coherency domain. The master receives a response of the first coherency domain to the first broadcast of the operation. If the response indicates the operation cannot be serviced in the first coherency domain alone, the master increases the scope of transmission by performing a second broadcast of the operation in both the first and second coherency domains. If the response indicates the operation can be serviced in the first coherency domain, the master refrains from performing the second broadcast.