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:
Apr. 17, 2018
Filed:
Apr. 24, 2014
Applicant:
Empire Technology Development Llc, Wilmington, DE (US);
Inventor:
Yan Solihin, Raleigh, NC (US);
Assignee:
EMPIRE TECHNOLOGY DEVELOPMENT LLC, Wilmington, DE (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F 12/08 (2016.01); G06F 12/0811 (2016.01); G06F 12/0817 (2016.01);
U.S. Cl.
CPC ...
G06F 12/0811 (2013.01); G06F 12/0826 (2013.01); G06F 12/0817 (2013.01); G06F 2212/1028 (2013.01); G06F 2212/621 (2013.01); G06F 2212/622 (2013.01); Y02B 60/1225 (2013.01);
Abstract
A cache coherence mechanism may comprise a bit-to-cache map for processor cores operable up to a maximum frequency for cores of a multicore processor. Entries in a cache coherence directory may include a bit field identifying cores operable at or near the maximum frequency that share a memory block corresponding to the entry. An additional field may indicate sharing by cores operating at lower frequencies. The additional field may be indicative of the bit-field corresponding to a bit-to-cache map representative of cores other than those operating at or near the maximum frequency.