Volker Strumpen,
"Energy Efficiency of Parallel Computations under Voltage Scaling"
, in Gerald Hilber, Timm Ostermann, Andreas Rauchenecker: Austrochip Workshop on Microelectronics, Institut für Integrierte Schaltungen, Linz, Seite(n) 41-46, 2013
Original Titel:
Energy Efficiency of Parallel Computations under Voltage Scaling
Sprache des Titels:
Englisch
Original Buchtitel:
Austrochip Workshop on Microelectronics
Original Kurzfassung:
Since VLSI technology has reached the power limit, energy efficient computing is of growing interest. Yet there is little
consensus about how to link electrical properties of energy
and power consumption to algorithmic properties of computations. In this article we study the energy and time
complexity of parallel computations as a function of supply voltage. To that end, we derive a voltage scaling model
for multicore processors, and show that the asymptotic energy complexity of parallel computations equals their work
complexity. We can maximize the savings of energy and
time simultaneously by lowering the supply voltage to near-
threshold voltage, and show that the maximum savings are
bound by the parallelism of the executed algorithm. We
conclude that energy savings of parallel computations by
voltage scaling can be practically significant despite being
asymptotically irrelevant