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Broadcasting a message in a parallel computer

United States Patent

8,891,408
November 18, 2014
View the Complete Patent at the US Patent & Trademark Office
Methods, systems, and products are disclosed for broadcasting a message in a parallel computer that includes: transmitting, by the logical root to all of the nodes directly connected to the logical root, a message; and for each node except the logical root: receiving the message; if that node is the physical root, then transmitting the message to all of the child nodes except the child node from which the message was received; if that node received the message from a parent node and if that node is not a leaf node, then transmitting the message to all of the child nodes; and if that node received the message from a child node and if that node is not the physical root, then transmitting the message to all of the child nodes except the child node from which the message was received and transmitting the message to the parent node.
Archer; Charles J. (Rochester, MN), Faraj; Daniel A. (Rochester, MN)
International Business Machines Corporation (Armonk, NY)
13/ 861,963
20130246533
April 12, 2013
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT This invention was made with Government support under Contract No. B554331 awarded by the Department of Energy. The Government has certain rights in this invention.