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.

Date of Patent:
Jan. 12, 2016

Filed:

Jun. 17, 2013
Applicant:

Futurewei Technologies, Inc., Plano, TX (US);

Inventors:

Iulin Lih, San Jose, CA (US);

Chenghong He, Shenzhen, CN;

Hongbo Shi, Xian, CN;

Naxin Zhang, Singapore, SG;

Assignee:
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G06F 12/00 (2006.01); G06F 12/08 (2006.01);
U.S. Cl.
CPC ...
G06F 12/0815 (2013.01); G06F 12/0817 (2013.01); G06F 2212/1016 (2013.01); G06F 2212/1024 (2013.01);
Abstract

A home node for selecting a source node using a cache coherency protocol, comprising a logic unit cluster coupled to a directory, wherein the logic unit cluster is configured to receive a request for data from a requesting cache node, determine a plurality of nodes that hold a copy of the requested data using the directory, select one of the nodes using one or more selection parameters as the source node, and transmit a message to the source node to determine whether the source node stores a copy of the requested data, wherein the source node forwards the requested data to the requesting cache node when the requested data is found within the source node, and wherein some of the nodes are marked as a Shared state corresponding to the cache coherency protocol.


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