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. 07, 2012
Filed:
Jun. 12, 2009
Steven L. Scott, Chippewa Falls, WI (US);
Dennis C. Abts, Eleva, WI (US);
Aaron F. Godfrey, Eagan, MN (US);
Steven L. Scott, Chippewa Falls, WI (US);
Dennis C. Abts, Eleva, WI (US);
Aaron F. Godfrey, Eagan, MN (US);
Cray Inc., Seattle, WA (US);
Abstract
In some embodiments, the present invention relates to a method of maintaining a global clock within a multiprocessor system having a plurality of nodes that are connected in a network via links. A virtual spanning tree is mapped onto the network and the nodes and the links are configured such that each node is in a parent-child relationship with one or more other nodes in the virtual spanning tree. A global clock is generated in a root of the virtual spanning tree and global clock signals are communicated down the virtual spanning tree to each of the nodes.