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Performance monitoring for new phase dynamic optimization of instruction dispatch cluster configuration

United States Patent

January 24, 2012
View the Complete Patent at the US Patent & Trademark Office
In a processor having multiple clusters which operate in parallel, the number of clusters in use can be varied dynamically. At the start of each program phase, the configuration option for an interval is run to determine the optimal configuration, which is used until the next phase change is detected. The optimum instruction interval is determined by starting with a minimum interval and doubling it until a low stability factor is reached.
Balasubramonian; Rajeev (Sandy, UT), Dwarkadas; Sandhya (Rochester, NY), Albonesi; David (Ithaca, NY)
University of Rochester (Rochester, NY)
12/ 352,493
January 12, 2009
STATEMENT OF GOVERNMENT INTEREST The work leading to the present invention was supported in part by NSF grants EIA-0080124, CCR-9811929, CCR-9988361, CCR-0219848, and ECS-0225413; by DARPA/ITO under AFRL contract F29601-00-K-0182; and by the U.S. Department of Energy Office of Inertial Confinement Fusion under Cooperative Agreement No. DE-FC03-92SF19460. The government has certain rights in the invention.