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List based prefetch

United States Patent

August 28, 2012
View the Complete Patent at the US Patent & Trademark Office
A list prefetch engine improves a performance of a parallel computing system. The list prefetch engine receives a current cache miss address. The list prefetch engine evaluates whether the current cache miss address is valid. If the current cache miss address is valid, the list prefetch engine compares the current cache miss address and a list address. A list address represents an address in a list. A list describes an arbitrary sequence of prior cache miss addresses. The prefetch engine prefetches data according to the list, if there is a match between the current cache miss address and the list address.
Boyle; Peter (Edinburgh, GB), Christ; Norman (Irvington, NY), Gara; Alan (Yorktown Heights, NY), Kim; Changhoan (San Jose, CA), Mawhinney; Robert (New York, NY), Ohmacht; Martin (Yorktown Heights, NY), Sugavanam; Krishnan (Yorktown Heights, NY)
International Business Machines Corporation (Armonk, NY)
12/ 696,825
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.