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:
Feb. 16, 2016
Filed:
Nov. 27, 2012
Applicant:
Nvidia Corporation, Santa Clara, CA (US);
Inventor:
Anurag Chaudhary, San Jose, CA (US);
Assignee:
NVIDIA CORPORATION, Santa Clara, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F 13/00 (2006.01); G06F 12/08 (2006.01);
U.S. Cl.
CPC ...
G06F 12/0862 (2013.01); G06F 12/0802 (2013.01); G06F 12/0897 (2013.01); G06F 2212/6026 (2013.01);
Abstract
Cache hit information is used to manage (e.g., cap) the prefetch distance for a cache. In an embodiment in which there is a first cache and a second cache, where the second cache (e.g., a level two cache) has greater latency than the first cache (e.g., a level one cache), a prefetcher prefetches cache lines to the second cache and is configured to receive feedback from that cache. The feedback indicates whether an access request issued in response to a cache miss in the first cache results in a cache hit in the second cache. The prefetch distance for the second cache is determined according to the feedback.