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Energy optimization of multiprocessor systems on chip by voltage selection
Linköpings universitet, Tekniska högskolan. Linköpings universitet, Institutionen för datavetenskap, ESLAB - Laboratoriet för inbyggda system.
Linköpings universitet, Tekniska högskolan. Linköpings universitet, Institutionen för datavetenskap, ESLAB - Laboratoriet för inbyggda system.
Linköpings universitet, Tekniska högskolan. Linköpings universitet, Institutionen för datavetenskap, ESLAB - Laboratoriet för inbyggda system.
Diesel Systems for Commercial Vehicles, Robert Bosch GmbH, Stuttgart 70469, Germany.
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2007 (engelsk)Inngår i: IEEE Transactions on Very Large Scale Integration (vlsi) Systems, ISSN 1063-8210, E-ISSN 1557-9999, Vol. 15, nr 3, s. 262-275Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Dynamic voltage selection and adaptive body biasing have been shown to reduce dynamic and leakage power consumption effectively. In this paper, we optimally solve the combined supply voltage and body bias selection problem for multiprocessor systems with imposed time constraints, explicitly taking into account the transition overheads implied by changing voltage levels. Both energy and time overheads are considered. The voltage selection technique achieves energy efficiency by simultaneously scaling the supply and body bias voltages in the case of processors and buses with repeaters, while energy efficiency on fat wires is achieved through dynamic voltage swing scaling. We investigate the continuous voltage selection as well as its discrete counterpart, and we prove strong NP-hardness in the discrete case. Furthermore, the continuous voltage selection problem is solved using nonlinear programming with polynomial time complexity, while for the discrete problem, we use mixed integer linear programming and a polynomial time heuristic. We propose an approach that combines voltage selection and processor shutdown in order to optimize the total energy. © 2007 IEEE.

sted, utgiver, år, opplag, sider
2007. Vol. 15, nr 3, s. 262-275
Emneord [en]
Energy management, Power minimization, Real-time systems, Voltage selection
HSV kategori
Identifikatorer
URN: urn:nbn:se:liu:diva-49971DOI: 10.1109/TVLSI.2007.891101OAI: oai:DiVA.org:liu-49971DiVA, id: diva2:270867
Tilgjengelig fra: 2009-10-11 Laget: 2009-10-11 Sist oppdatert: 2017-12-12

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