In this paper we present a QoS scheduler that assigns the bandwidth over the wireless channel such that the amount of energy spend by the mobile is minimized, while maintaining the Quality of Service of the connections. Energy efficiency is an important issue for mobile computers since they must rely on their batteries. We have designed and implemented an energy-efficient architecture and MAC p...

The energy usage of computer systems is becoming important, especially for portable battery-operated applications and embedded systems. A significant reduction in the energy consumption of a program can be achieved via code optimizations that transform the code to take advantage of the Instruction Set Architecture (ISA) of the target processor. These code optimizations result in significantly s...

This paper considers scheduling parallelizable jobs in the non-clairvoyant speed scaling setting to minimize the objective of weighted flow time plus energy. Previously, strong lower bounds were shown on this model in the unweighted setting even when the algorithm is given a constant amount of resource augmentation over the optimal solution. However, these lower bounds were given only for certa...

In this paper, we describe two new algorithms for datapath scheduling which aim at energy reduction while maintaining performance. The proposed algorithms, time constrained and resource constrained, utilize the concepts of multiple supply voltage and dynamic clocking for energy minimization. In dynamic clocking, the functional units can be operated at different frequencies depending on the comp...

Although cloud computing has been widely adopted by the industry, but the research on cloud computing is still at an infancy stage. Energy management is one of the challenging research issues. Cloud Infrastructure is the most important component in a cloud. It may consists tens of thousands of servers, network disks and devices, and typically serve millions of users globally. Such a large-scale...