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- W2497685462 abstract "System designers and application programmersmust consider trade-offs between performance and energy. Making energy-aware decisions when designing an application or runtime system requires quantitative information about power consumed by different processor components. We present a methodology to model static and dynamic power consumption of individual cores and the uncore components, and we validate our power model for both sequential and parallel benchmarks at different voltage-frequency pairs on an Intel Haswell platform. Our power models yield the following insights about energy-efficient scaling. (1) We show that uncore energy accounts for up to 74% of total energy. In particular, uncore static energy can be as high as 61% of total energy, potentially making it a major source of energy inefficiency. (2) We find that the frequency at which an application expends the lowest energy depends on how memory-bound it is. (3) We demonstrate that even though using more cores may improve performance, the energy consumed by stalled cores during serial portions of theprogram can make using fewer cores more energy-efficient." @default.
- W2497685462 created "2016-08-23" @default.
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- W2497685462 date "2016-05-01" @default.
- W2497685462 modified "2023-09-23" @default.
- W2497685462 title "A Methodology for Modeling Dynamic and Static Power Consumption for Multicore Processors" @default.
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- W2497685462 doi "https://doi.org/10.1109/ipdps.2016.118" @default.
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