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- W211434535 abstract "Power consumption has become a major cause of concern spanning from data centres to handheld devices. Traditionally, improvement in power-performance efficiency of a modern superscalar processor came from technology scaling. However, that is no longer the case. Many of the current systems deploy coarse grain voltage and/or frequency scaling for power management. These techniques are attractive, but limited because of their granularity of control and effectiveness in nano-complementary metal-oxide-semiconductor (CMOS) technologies. This study proposes a novel architecture-level mechanism to exploit intra-thread variations for power-performance efficiency in modern superscalar processors. This class of processors implement several buffer/queue structures to support speculative out-of-order execution for performance enhancement. Applications may not need full capabilities of such structures at all times. A mechanism that collaboratively adapts a finite set of key hardware structures to the changing programme behaviour can allow the processor to operate with heterogeneous power-performance capabilities. This study presents a novel offline regression-based empirical model to estimate structure resizing for a selected set of structures. It is shown that using a few processor runtime events, the system can dynamically estimate structure resizing to exploit power-performance efficiency. Results show that using the proposed empirical model, a selective set of key structures can be resized at runtime to deliver on average 40% power-performance efficiency over a baseline design, with only 5% loss of performance." @default.
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- W211434535 date "2012-01-01" @default.
- W211434535 modified "2023-10-16" @default.
- W211434535 title "Empirical model for cooperative resizing of processor structures to exploit power-performance efficiency at runtime" @default.
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- W211434535 doi "https://doi.org/10.1049/iet-cds.2011.0354" @default.
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