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Although general purpose GPUs have relatively high computing capacity, they also introduce high power consumption compared with general purpose CPUs. Therefore low-power techniques targeted for GPUs will be one of the most hot topics in the future. On the other hand, in several application domains, users are unwilling to sacrifice performance to save power. In this paper, we propose an effective kernel...
This paper focuses on the energy consumption problem in the downlink MIMO relay systems with multiple users. Power consumption under the target sum capacity is used as the energy efficient performance metric. Three transmission schemes, i.e. regenerate decode-and-forward (DF) relaying, linear non-regenerate relaying (SVD-ZFBF) and direct transmission with ZFBF are considered. The power model is developed...
The design of embedded systems is often subject to strict requirements concerning various aspects, including real-time performance, power consumption and die area. For mobile devices especially, power consumption is often the most important issue. In order to meet these requirements an adequate system architecture needs to be designed and the embedded software needs to be optimized. For complex applications,...
Power consumption is an important constraint in embedded systems running real time operating systems (RTOS). This study proposes an evaluation of significance of the joint effect of possible factors in the power consumption of RTOS running on small and medium scale embedded systems. Design of experiments techniques (DOE) were used to identify the impact in the power consumption of the system. A case...
With the increase of high performance computing systems' scale, the power consumption of HPC systems greatly increase, among which the power consumption of massive storage system occupies an important role. Measurements and analyses of massive storage system are significant for reducing the power consumption of storage system. Tianhe-1 comes in at No.5 in Nov. 2009 Top500 list with the highest ranking...
To prolong the lifetime of sensor nodes, most research works have focused on how to tune the duty cycling schemes among nodes to save the communication cost using multifarious wake-up strategies. To this aim, we propose a novel design strategy for mitigating average power consumption of sensor node using the Min(N, T) policy M/G/1 queuing theory. There is a heavy overhead for packet collisions and...
Low-power design is quite necessary for the modern power-sensitive embedded systems. Translation Look-aside Buffers (TLBs) can take up significant on-chip energy while translating page addresses. In this paper, we study the memory access behavior of applications drawn from SPEC benchmark suits. In such study, we define a parameter, page interval, to direct our research on saving the power dissipation...
The increasing demand for portable computing has elevated power consumption to be one of the most critical embedded systems design parameters. In this paper, we present a qualitative study wherein we examine the impact of code transformations on the energy and power consumption. Three main categories of code transformations are investigated, namely data, loop and procedural oriented transformations...
Emerging trends in applications with the requirement of considerable computational capacity and decreasing time-to-market have urged the need of multiprocessor systems. With the advent of multiprocessor systems, there is an increased demand to efficiently control their energy and power budget. As the technology scales to increasingly smaller feature sizes, the static power consumption is expected...
Over 500 million host computers, three billion PCs and mobile devices consume over a billion kilowatts of electricity. As part of this ldquosystemrdquo computer networks consume an increasing amount of energy, and help reduce energy expenditure from other sources through e-work, e-commerce and e-learning. Traditionally, network design seeks to minimise network cost and maximise quality of service...
In this paper a Rayleigh fading model based reliability-centric routing algorithm is proposed for Wireless Sensor Networks (WSNs). The proposed scheme is optimized with respect to minimal power consumption to improve longevity as well as to ensure reliable packet transmission to the Base Station (BS). Reliability is guaranteed by selecting path over which the probability of correct packet reception...
The trace cache is a solution to achieving high instruction fetches bandwidth by buffering and reusing dynamic instruction traces. This work presents a new trace cache implementation that includes the DVFS (Dynamic Voltage and Frequency Scaling) techniques for energy efficiency. The focus of this paper is to compare the trace cache with DVFS techniques to the conventional trace cache organization...
Power consumption of disk systems is an important issue in scientific computing where data-intensive applications exercise disk storage extensively. While one can spin down idle disks when idleness is detected, spinning up them takes many cycles and consumes extra power. Therefore, it can be very useful in practice to improve disk reuse, that is, using the same set of disks as much as possible. If...
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