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Method and apparatus of parallel computing with simultaneously operating stream prefetching and list prefetching engines

United States Patent

December 4, 2012
View the Complete Patent at the US Patent & Trademark Office
A prefetch system improves a performance of a parallel computing system. The parallel computing system includes a plurality of computing nodes. A computing node includes at least one processor and at least one memory device. The prefetch system includes at least one stream prefetch engine and at least one list prefetch engine. The prefetch system operates those engines simultaneously. After the at least one processor issues a command, the prefetch system passes the command to a stream prefetch engine and a list prefetch engine. The prefetch system operates the stream prefetch engine and the list prefetch engine to prefetch data to be needed in subsequent clock cycles in the processor in response to the passed command.
Boyle; Peter A. (Edinburgh, GB), Christ; Norman H. (Irvington, NY), Gara; Alan (Yorktown Heights, NY), Mawhinney; Robert D. (New York, NY), Ohmacht; Martin (Yorktown Heights, NY), Sugavanam; Krishnan (Yorktown Heights, NY)
International Business Machines Corporation (Armonk, NY)
12/ 696,746
January 29, 2010
GOVERNMENT CONTRACT This invention was Government supported under Contract No. B554331 awarded by Department of Energy. The Government has certain rights in this invention.