Patent 8095759 was granted and assigned to Cray Inc. on January, 2012 by the United States Patent and Trademark Office.
A multiprocessor computer system comprises a plurality of processors and a plurality of nodes, each node comprising one or more processors. A local memory in each of the plurality of nodes is coupled to the processors in each node, and a hardware firewall comprising a part of one or more of the nodes is operable to prevent a write from an unauthorized processor from writing to the local memory.