Dynamic voltage and frequency scaling proves to be an efficient way of reducing energy consumption of servers. Energy savings are typically achieved by setting a well-chosen frequency during some program phases. However, determining suitable program phases and their associated optimal frequencies is a complex problem. Moreover, hardware is constrained by non negligible frequency transition late...

Energy efficient real-time systems have been a prime concern in the past few years. Techniques at all levels of system design are being developed to reduce energy consumption. At the physical level, new fabrication technologies attempt to minimize overall chipset power. At the system design level, technologies such as Dynamic Voltage and Frequency Scaling (DVFS) and Dynamic Power Management (DP...

Nowadays energy consumption problem is a major issue for data centers. The energy consumption increases significantly along with its CPU frequency getting higher. With Dynamic Voltage and Frequency Scaling (DVFS) techniques, CPU could be set to a suitable working frequency during the running time according to the workload. On the other side, reducing frequency implies that more servers will be ...

Mobile consumer-electronics devices, especially phones, are powered from batteries which are limited in size and therefore capacity. This implies that managing energy well is paramount in such devices. Good energy management requires a good understanding of where and how the energy is used. To this end we present a detailed analysis of the power consumption of a recent mobile phone, the Openmok...

In deeply scaled CMOS technologies, two major non-ideal factors are threatening the survival of the CMOS; i) PVT (process, voltage, and temperature) variations and ii) leakage power consumption. In this paper, we propose a novel postsilicon tuning methodology to scale optimum voltage and frequency “dynamically”. The proposed design technique will use our PVT sensor circuits to monitor the varia...

Processor Frequencies Sampsa Fabritius Raimondas Lencevicius Edu Metz Alexander Ran Nokia Mobile Phones, Sinitaival 5, FIN-33720 Tampere, Finland Nokia Research Center, 5 Wayside Road, Burlington, MA 01803, USA [email protected] [email protected] [email protected] [email protected] Abstract. This paper describes a new approach to experimentally estimate the applica...

We consider a Dynamic Voltage and Frequency Scaling (DVFS) processor executing jobs with obsolescence deadlines: A job becomes obsolete is removed from the system if it not completed before its deadline. The objective to design dynamic speed policy for that minimizes average energy consumption plus an cost per deadline miss. Under Poisson arrivals exponentially distributed deadlines sizes, we s...

The power and thermal issues have become one of the major design challenges for the development of modern computing systems. Developing an effective Dynamic thermal management algorithm for the practical multi-core computing system to deliver maximal throughput without encountering temperature emergencies becomes highly demanded. In this paper, we first identify the limitation of the existing t...

Tasks running on embedded systems are often associated with deadlines. While it is important to complete tasks before their associated deadlines, performance and energy consumption also play important roles in many usages of embedded systems. To address these issues, we explore the use of Dynamic Voltage and Frequency Scaling (DVFS), a standard feature available on many modern processors for em...

In the electronic system development, energy consumption is clearly becoming one of the most important design concerns. From the system level point of view, Dynamic Power Management (DPM) and Dynamic Voltage and Frequency Scaling (DVFS) are two mostly applied techniques to adjust the tradeoff between the performance and power dissipation at runtime. In this paper, we study the problem of combin...