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Dynamic Voltage and Frequency Scaling (DVFS) is a very efficient way to manage performance/power trade-off in embedded systems. It consists in switching between low and high voltage-frequency operating points according to the required processing performance. However, with novel technologies such as UTBB FD-SOI, circuits can be designed to work on very wide frequency ranges. In this case, substantial...
Nowadays, one of the main limiting factor in multiprocessor development is the increasing speed gap between efficient processing elements and slow main memories. To reduce this limitation, prefetching mechanisms, implemented in memory hierarchy, attempt to predict the future data needed in local memory. However, classical proposed solutions are no longer efficient for typical access sequences in the...
Power efficiency of embedded systems is a tremendous challenge within the context of platforms with limited power-budget and high computational performance. These conflicting design objectives can be met if both the clock frequency and the supply voltage are dynamically controlled with respect to the ongoing application requirement. As a result, a new trend has appeared in the design of MultiProcessor...
Today mobile computing platforms need everincreasing computational performances while their energy consumption is drastically limited by battery lifespan. An optimal operating point is obtained thanks to a compromise between performance and power consumption. For distributed architectures (e.g. MultiProcessor System On Chip), the supply voltage and the operating frequency of each processing element...
Modern electronic embedded devices have to run more and more quickly while consuming less and less energy. In distributed architectures (MultiProcessor System On Chip for example), the supply voltage and the operating frequency of each processor is usually tuned dynamically to obtain an efficient performance/power consumption trade-offs. Then, to locally adapt efficienctly the parameters of the circuit,...
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