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:
Mar. 05, 2013
Filed:
Sep. 25, 2010
Adrian C. Moga, Portland, OR (US);
Malcolm Mandviwalla, Hillsboro, OR (US);
Vedaraman Geetha, Fremont, CA (US);
Herbert H. Hum, Portland, OR (US);
Adrian C. Moga, Portland, OR (US);
Malcolm Mandviwalla, Hillsboro, OR (US);
Vedaraman Geetha, Fremont, CA (US);
Herbert H. Hum, Portland, OR (US);
Intel Corporation, Santa Clara, CA (US);
Abstract
Methods and apparatus relating to allocation and/or write policy for a glueless area-efficient directory cache for hotly contested cache lines are described. In one embodiment, a directory cache stores data corresponding to a caching status of a cache line. The caching status of the cache line is stored for each of a plurality of caching agents in the system. An write-on-allocate policy is used for the directory cache by using a special state (e.g., snoop-all state) that indicates one or more snoops are to be broadcasted to all agents in the system. Other embodiments are also disclosed.