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:
May. 15, 2018
Filed:
May. 13, 2015
Applicant:
Ampere Computing Llc, Santa Clara, CA (US);
Inventor:
Kjeld Svendsen, Sunnyvale, CA (US);
Assignee:
Ampere Computing LLC, Santa Clara, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F 12/02 (2006.01); G06F 12/0862 (2016.01); G06F 12/126 (2016.01);
U.S. Cl.
CPC ...
G06F 12/0862 (2013.01); G06F 12/126 (2013.01);
Abstract
Various embodiments provide for a system that prefetches data from a main memory to a cache and then evicts unused data to a lower level cache. The prefetching system will prefetch data from a main memory to a cache, and data that is not immediately useable or is part of a data set which is too large to fit in the cache can be tagged for eviction to a lower level cache, which keeps the data available with a shorter latency than if the data had to be loaded from main memory again. This lowers the cost of prefetching useable data too far ahead and prevents cache trashing.