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\iteman{io-port 05853644}
\itemau{Vivet, Pascal; Beigne, Edith; Lebreton, Hugo; Zergainoh, Nacer-Eddine}
\itemti{On line power optimization of data flow multi-core architecture based on Vdd-Hopping for local DVFS.}
\itemso{van Leuken, Ren\'e (ed.) et al., Integrated circuit and system design. Power and timing modeling, optimization, and simulation. 20th international workshop, PATMOS 2010, Grenoble, France, September 7--10, 2010. Revised selected papers. Berlin: Springer (ISBN 978-3-642-17751-4/pbk). Lecture Notes in Computer Science 6448, 94-104 (2011).}
\itemab
Summary: With growing integration, power consumption is becoming a major issue for multi-core chips. At system level, per-core DVFS is expected to save substantial energy provided an adapted control. In this paper we propose a local on-line optimization technique to reduce energy in data-flow architecture, thanks to a Local Power Manager (LPM) using Vdd-Hopping for efficient local DVFS. The proposed control is a hybrid global and local scheme which respects throughput and latency constraints. The approach has been fully validated on a real MIMO Telecom application using a SystemC platform instrumented with power estimates. Local DVFS brings 45\% power reduction compared to idle mode. When local on-line optimization benefit from computation time variations, 30\% extra energy savings can be achieved.
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\itemut{low power; DVFS; Vdd-Hopping}
\itemli{doi:10.1007/978-3-642-17752-1\_10}
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