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:
Sep. 01, 2015
Filed:
Nov. 21, 2008
Karl J. Duvalsaint, Lagrangeville, NY (US);
Daeik Kim, White Plains, NY (US);
Moon J. Kim, Wappingers Falls, NY (US);
Karl J. Duvalsaint, Lagrangeville, NY (US);
Daeik Kim, White Plains, NY (US);
Moon J. Kim, Wappingers Falls, NY (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
Specifically, under the present invention, a cache memory unit can be designated as a pseudo cache memory unit for another cache memory unit within a common hierarchal level. For example, in case of cache miss at cache memory unit 'X' on cache level L2 of a hierarchy, a request is sent to a cache memory unit on cache level L3 (external), as well as one or more other cache memory units on cache level L2. The L2 level cache memory units return search results as a hit or a miss. They typically do not search L3 nor write back with the L3 result even (e.g., if it the result is a miss). To this extent, only the immediate origin of the request is written back with L3 results, if all L2s miss. As such, the other L2 level cache memory units serve the original L2 cache memory unit as pseudo caches.