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:
Jul. 30, 2013
Filed:
Oct. 10, 2011
Paul R. Frank, Eau Claire, WI (US);
Gregory M. Thorson, Altoona, WI (US);
Russell L. Nicol, Eau Claire, WI (US);
Donglai Dai, Pleasanton, CA (US);
Joseph M. Placek, Chippewa Falls, WI (US);
Paul R. Frank, Eau Claire, WI (US);
Gregory M. Thorson, Altoona, WI (US);
Russell L. Nicol, Eau Claire, WI (US);
Donglai Dai, Pleasanton, CA (US);
Joseph M. Placek, Chippewa Falls, WI (US);
Silicon Graphics International Corp., Fremont, CA (US);
Abstract
A system for establishing a primary master node in a computer system includes a plurality of nodes, each node configured with an update interval, a hierarchy of master nodes selected from the plurality of nodes, wherein the master nodes are configured to synchronize the plurality of nodes with a clock value by sending out its clock value when its update interval has expired, wherein each node resets its update interval when it receives the clock value, a primary master node selected from the hierarchy of master nodes based on its update interval, and at least one backup master node selected from the hierarchy of master nodes based on its update interval, the backup master node configured to become the primary master node when the plurality of nodes do not receive the clock value after a predetermined period of time has elapsed.