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- W2559984209 abstract "Energy efficiency is an important issue for many embedded systems, where limited battery lifetime and powerhungry hardware constrain the usefulness of such devices. Modern Systems-on-Chip (SoCs) such as the Tegra K1 employ advanced power management capabilities such as two CPU clusters, clock-gating, power-gating and dynamic frequency tuning to meet application demands. At design or runtime phases, it is challenging for system architects and software developers to understand the effects that these mechanisms have in terms of power and performance in all parts of the system. This is because it is impossible to measure directly the power usage of cores, caches, memory and other hardware components. Rate based power models are often proposed as a solution for this, unfortunately these can mispredict substantially on the Tegra K1 up to 30 %. In this paper, we propose a power modelling method for the Tegra K1 CPU which overcomes the limitations of the most common types of models found in literature, but still only requires power measurement of the board. Through extensive empirical validation, we demonstrate an accuracy which is close to 100 %. Preliminary experiments show that our methodology is able to capture instruction power of individual system processes and applications and produce detailed power breakdowns of all components in the system." @default.
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- W2559984209 date "2016-09-01" @default.
- W2559984209 modified "2023-09-23" @default.
- W2559984209 title "High-Precision Power Modelling of the Tegra K1 Variable SMP Processor Architecture" @default.
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- W2559984209 doi "https://doi.org/10.1109/mcsoc.2016.28" @default.
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