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:
Aug. 04, 2015
Filed:
Mar. 20, 2012
Hari S. Kannan, Sunnyvale, CA (US);
Brian P. Lilly, San Francisco, CA (US);
Gerard R. Williams, Iii, Los Altos, CA (US);
Mahnaz Sadoughi-yarandi, Santa Clara, CA (US);
Perumal R. Subramoniam, San Jose, CA (US);
Pradeep Kanapathipillai, Santa Clara, CA (US);
Hari S. Kannan, Sunnyvale, CA (US);
Brian P. Lilly, San Francisco, CA (US);
Gerard R. Williams, III, Los Altos, CA (US);
Mahnaz Sadoughi-Yarandi, Santa Clara, CA (US);
Perumal R. Subramoniam, San Jose, CA (US);
Pradeep Kanapathipillai, Santa Clara, CA (US);
Apple Inc., Cupertino, CA (US);
Abstract
Processors and methods for coordinating prefetch units at multiple cache levels. A single, unified training mechanism is utilized for training on streams generated by a processor core. Prefetch requests are sent from the core to lower level caches, and a packet is sent with each prefetch request. The packet identifies the stream ID of the prefetch request and includes relevant training information for the particular stream ID. The lower level caches generate prefetch requests based on the received training information.