Modern CPUs employ Dynamic Voltage and Frequency Scaling (DVFS) to boost performance, lower power, and improve energy efficiency. Good DVFS decisions require accurate performance predictions across frequencies. A new hardware structure for measuring leading load cycles was recently proposed and demonstrated promising performance prediction abilities in simulation. This paper proposes a method o...

The aim of Green Cloud Computing is to achieve a balance between resource consumption and quality of service. In order to achieve this objective and to maintain the flexibility of the Cloud, dynamic provisioning and allocation strategies are needed to manage the internal settings of the Cloud, addressing oscillatory peaks of workload. In this context, we propose strategies to optimize the use o...

The use of Dynamic Voltage and Frequency Scaling (DVFS) by EnergyEfficient (EE) computer systems considerably increases the requirements regarding the design of efficient system clocks. On the one hand, the operation of a system clock must support the independent operating frequencies of the processor core units, the dynamic migration of the running processes between the processors core units, ...

This paper describes the design of a power efficient microarchitecture for transient fault detection in chip multiprocessors (CMPs) We introduce a new per-core dynamic voltage and frequency scaling (DVFS) algorithm for our architecture that significantly reduces power dissipation for redundant execution with a minimal performance overhead. Using cycle accurate simulation combined with a simple ...

Dynamic voltage and frequency scaling (DVFS) is a means to adjust the computing capacity and power consumption of computing systems to the application demands. DVFS is generally useful to provide a compromise between computing demands and power consumption, especially in the areas of resource-constrained computing systems. Many modern processors support some form of DVFS. In this article, we fo...

The energy consumption issue in distributed computing systems has become quite critical due to environmental concerns. In response to this, many energy-aware scheduling algorithms have been developed primarily by using the dynamic voltage-frequency scaling (DVFS) capability incorporated in recent commodity processors. The majority of these algorithms involve two passes: schedule generation and ...

Mobile platforms are increasingly using Heterogeneous MultiProcessor Systems-on-Chip (HMPSoCs) with differentiated processing cores and GPUs to achieve high performance for graphics-intensive applications such as mobile games. Traditionally, separate CPU and GPU governors are deployed in order to achieve energy efficiency through Dynamic Voltage Frequency Scaling (DVFS), but miss opportunities ...

This paper describes a dynamic voltage and frequency scaling (DVFS) technique for MPEG decoding to reduce the energy consumption while maintaining a quality of service (QoS) constraint. The computational workload for an incoming frame is predicted by using a frame-based history so that the processor voltage and frequency can be scaled to provide the exact amount of computing power needed to dec...

On multicore platforms, reliable task execution, as well low energy consumption, are essential. Dynamic Voltage/Frequency Scaling (DVFS) is typically used for savings, but with a negative impact on reliability, especially when the applied frequency low. Using high frequencies, required to meet reliability constraints, or replicating tasks increases consumption. To reduce while enhancing and sat...

Dynamic Voltage and Frequency Scaling (DVFS), CPU pinning, horizontal, and vertical scaling, are four techniques that have been proposed as actuators to control the performance and energy consumption on data center servers. This work investigates the utility of these four actuators, and quantifies the power-performance tradeoffs associated with them. Using replicas of the German Wikipedia runni...