Download or read book An Effective Power aware Data Management for Pervasive Computing Devices written by Byung-Won On and published by . This book was released on 2006 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract: "Devices supporting Pervasive Computing (e.g., personal digital assistants and laptop computers) are becoming increasingly ubiquitous. Even an electronic textile garment will become pervaded in the near future. However, as such devices become more widely used, it is considerably important to overcome power constraints. In order to improve such power limitations, this paper considers the power-aware data management to extend data availability using data migration within a collection of devices. Former studies in data migration still have a challenge which data should be chosen automatically to migrate from a dying device in the collection. Too few data migration is not useful; on the other hand, too many data migration wastes computing resources and consumes unnecessary power. In this work, we focus on the tradeoff between the above methods and then propose two efficient power-aware data migration strategies: Migrate Most Frequently Used (MMFU) and Migrate Weighted Most Frequently Used (MWMFU). In our simulated environment, our schemes go halves on data miss rates and reduce the number of wasted data migration by average 35%, compared to the existing strategies such as Migrate All (MA) and Migrate Most Recently Used (MMRU)."
Download or read book Controlling Energy Demand in Mobile Computing Systems written by Carla Schlatter Ellis and published by Morgan & Claypool Publishers. This book was released on 2007-06-01 with total page 98 pages. Available in PDF, EPUB and Kindle. Book excerpt: This lecture provides an introduction to the problem of managing the energy demand of mobile devices. Reducing energy consumption, primarily with the goal of extending the lifetime of battery-powered devices, has emerged as a fundamental challenge in mobile computing and wireless communication. The focus of this lecture is on a systems approach where software techniques exploit state-of-the-art architectural features rather than relying only upon advances in lower-power circuitry or the slow improvements in battery technology to solve the problem. Fortunately, there are many opportunities to innovate on managing energy demand at the higher levels of a mobile system. Increasingly, device components offer low power modes that enable software to directly affect the energy consumption of the system. The challenge is to design resource management policies to effectively use these capabilities. The lecture begins by providing the necessary foundations, including basic energy terminology and widely accepted metrics, system models of how power is consumed by a device, and measurement methods and tools available for experimental evaluation. For components that offer low power modes, management policies are considered that address the questions of when to power down to a lower power state and when to power back up to a higher power state. These policies rely on detecting periods when the device is idle as well as techniques for modifying the access patterns of a workload to increase opportunities for power state transitions. For processors with frequency and voltage scaling capabilities, dynamic scheduling policies are developed that determine points during execution when those settings can be changed without harming quality of service constraints. The interactions and tradeoffs among the power management policies of multiple devices are discussed. We explore how the effective power management on one component of a system may have either a positive or negative impact on overall energy consumption or on the design of policies for another component. The important role that application-level involvement may play in energy management is described, with several examples of cross-layer cooperation. Application program interfaces (APIs) that provide information flow across the application-OS boundary are valuable tools in encouraging development of energy-aware applications. Finally, we summarize the key lessons of this lecture and discuss future directions in managing energy demand.
Download or read book Power Aware Computing written by Robert Graybill and published by Springer Science & Business Media. This book was released on 2013-04-17 with total page 387 pages. Available in PDF, EPUB and Kindle. Book excerpt: With the advent of portable and autonomous computing systems, power con sumption has emerged as a focal point in many research projects, commercial systems and DoD platforms. One current research initiative, which drew much attention to this area, is the Power Aware Computing and Communications (PAC/C) program sponsored by DARPA. Many of the chapters in this book include results from work that have been supported by the PACIC program. The performance of computer systems has been tremendously improving while the size and weight of such systems has been constantly shrinking. The capacities of batteries relative to their sizes and weights has been also improv ing but at a rate which is much slower than the rate of improvement in computer performance and the rate of shrinking in computer sizes. The relation between the power consumption of a computer system and it performance and size is a complex one which is very much dependent on the specific system and the technology used to build that system. We do not need a complex argument, however, to be convinced that energy and power, which is the rate of energy consumption, are becoming critical components in computer systems in gen eral, and portable and autonomous systems, in particular. Most of the early research on power consumption in computer systems ad dressed the issue of minimizing power in a given platform, which usually translates into minimizing energy consumption, and thus, longer battery life.
Download or read book Power Aware Computer Systems written by Babak Falsafi and published by Springer. This book was released on 2003-08-01 with total page 224 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book constitutes the thoroughly refereed post-proceedings of the Second International Workshop on Power-Aware Computer Systems, PACS 2002, held in Cambridge, MA, USA, in February 2002. The 13 revised full papers presented were carefully selected for inclusion in the book during two rounds of reviewing and revision. The papers are organized in topical sections on power-aware architecture and microarchitecture, power-aware real-time systems, power modeling and monitoring, and power-aware operating systems and compilers.
Download or read book Pervasive Computing written by Ciprian Dobre and published by Morgan Kaufmann. This book was released on 2016-05-06 with total page 550 pages. Available in PDF, EPUB and Kindle. Book excerpt: Pervasive Computing: Next Generation Platforms for Intelligent Data Collection presents current advances and state-of-the-art work on methods, techniques, and algorithms designed to support pervasive collection of data under ubiquitous networks of devices able to intelligently collaborate towards common goals. Using numerous illustrative examples and following both theoretical and practical results the authors discuss: a coherent and realistic image of today’s architectures, techniques, protocols, components, orchestration, choreography, and developments related to pervasive computing components for intelligently collecting data, resource, and data management issues; the importance of data security and privacy in the era of big data; the benefits of pervasive computing and the development process for scientific and commercial applications and platforms to support them in this field. Pervasive computing has developed technology that allows sensing, computing, and wireless communication to be embedded in everyday objects, from cell phones to running shoes, enabling a range of context-aware applications. Pervasive computing is supported by technology able to acquire and make use of the ubiquitous data sensed or produced by many sensors blended into our environment, designed to make available a wide range of new context-aware applications and systems. While such applications and systems are useful, the time has come to develop the next generation of pervasive computing systems. Future systems will be data oriented and need to support quality data, in terms of accuracy, latency and availability. Pervasive Computing is intended as a platform for the dissemination of research efforts and presentation of advances in the pervasive computing area, and constitutes a flagship driver towards presenting and supporting advanced research in this area. Indexing: The books of this series are submitted to EI-Compendex and SCOPUS Offers a coherent and realistic image of today’s architectures, techniques, protocols, components, orchestration, choreography, and development related to pervasive computing Explains the state-of-the-art technological solutions necessary for the development of next-generation pervasive data systems, including: components for intelligently collecting data, resource and data management issues, fault tolerance, data security, monitoring and controlling big data, and applications for pervasive context-aware processing Presents the benefits of pervasive computing, and the development process of scientific and commercial applications and platforms to support them in this field Provides numerous illustrative examples and follows both theoretical and practical results to serve as a platform for the dissemination of research advances in the pervasive computing area
Download or read book Power Aware Computer Systems written by Babak Falsafi and published by Springer Science & Business Media. This book was released on 2003-04-07 with total page 224 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book constitutes the thoroughly refereed post-proceedings of the Second International Workshop on Power-Aware Computer Systems, PACS 2002, held in Cambridge, MA, USA, in February 2002. The 13 revised full papers presented were carefully selected for inclusion in the book during two rounds of reviewing and revision. The papers are organized in topical sections on power-aware architecture and microarchitecture, power-aware real-time systems, power modeling and monitoring, and power-aware operating systems and compilers.
Download or read book Context Aware Energy Conservation in Pervasive Computing Environments written by Prathiba Joseph and published by . This book was released on 2006 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Cyber foraging or remote resource exploitation may be an efficient way to deal with this problem in a pervasive computing environment. Mobile devices can save battery power by migrating tasks to a nearby wired infrastructure or to other wireless devices in the environment with higher battery capacity and processing power. However, this process requires considerable automation to minimize energy consumption and user distraction. Also, a pervasive computing environment is highly dynamic and the contexts in the environment change rapidly as devices enter and leave the network. Thus, it is important that the devices are aware of the changing context and adapt to these changes accordingly. This leads to the challenge of how the devices would detect these changes and secondly how they would adapt to these changes after they are detected. A middleware service framework has been developed and deployed over a network of machines that exploit remote resources. The framework adopts a context-aware approach to make intelligent decisions on task migration and uses the achievable throughput in an end-to-end path as the context. The throughput achievable to each of the remote devices is measured and stored, and this is used to examine the trade-off between communication power expenditures and the power cost of local processing. For a set of tasks, energy savings of up to 43% are achieved through this process of context aware energy conservation. (Abstract shortened by UMI.).
Download or read book Networking Infrastructure for Pervasive Computing written by Debashis Saha and published by Springer Science & Business Media. This book was released on 2003 with total page 320 pages. Available in PDF, EPUB and Kindle. Book excerpt: The authors (two of whom are from the Indian Institute of Management Calcutta, India) argue that the possibilities of "Pervasive Computing" promises to extend the information-networked environment to practically every technological device, but that the current networking and communication infrastructure doesn't support those possibilities. Largely concerning themselves with networking technologies, they provide advice on the problems of addressing this gap between promise and infrastructure. Annotation (c)2003 Book News, Inc., Portland, OR (booknews.com).
Download or read book Pervasive Computing and the Networked World written by Qiaohong Zu and published by Springer. This book was released on 2013-03-14 with total page 939 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book constitutes the refereed post-proceedings of the Joint International Conference on Pervasive Computing and the Networked World, ICPCA-SWS 2012, held in Istanbul, Turkey, in November 2012. This conference is a merger of the 7th International Conference on Pervasive Computing and Applications (ICPCA) and the 4th Symposium on Web Society (SWS). The 53 revised full papers and 26 short papers presented were carefully reviewed and selected from 143 submissions. The papers cover a wide range of topics from different research communities such as computer science, sociology and psychology and explore both theoretical and practical issues in and around the emerging computing paradigms, e.g., pervasive collaboration, collaborative business, and networked societies. They highlight the unique characteristics of the "everywhere" computing paradigm and promote the awareness of its potential social and psychological consequences.
Download or read book Data Management in Pervasive Systems written by Francesco Colace and published by Springer. This book was released on 2015-10-17 with total page 380 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book contributes to illustrating the methodological and technological issues of data management in Pervasive Systems by using the DataBenc project as the running case study for a variety of research contributions: sensor data management, user-originated data operation and reasoning, multimedia data management, data analytics and reasoning for event detection and decision making, context modelling and control, automatic data and service tailoring for personalization and recommendation. The book is organized into the following main parts: i) multimedia information management; ii) sensor data streams and storage; iii) social networks as information sources; iv) context awareness and personalization. The case study is used throughout the book as a reference example.
Download or read book Context Aware Computing written by and published by Walter de Gruyter GmbH & Co KG. This book was released on 2017-12-18 with total page 482 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book addresses the impact of ambient intelligence, particularly its user-centric context-awareness requirement on data management strategies and solutions. Techniques of conceptualizing, capturing, protecting, modelling, and querying context information, as well as context-aware data management application are discussed, making the book is an essential reference for computer scientists, information scientists and industrial engineers.
Download or read book Pervasive Computing written by Hideyuki Tokuda and published by Springer. This book was released on 2009-05-04 with total page 421 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book constitutes the refereed proceedings of the 7th International Conference on Pervasive Computing, Pervasive 2009, held in Nara, Japan, in May 2009. The 20 revised full papers and 7 revised short papers presented were carefully reviewed and selected from 147 initial submissions. The papers are organized in topical sections on digital displays, navigation, at home with pervasive applications, sensors, sensors, everywhere, working together, tagging and tracking, methods and tools, and the importance of context.
Download or read book Advances in Grid and Pervasive Computing written by Jukka Riekki and published by Springer. This book was released on 2011-04-27 with total page 310 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book constitutes the proceedings of the 6th International Conference, GPC 2011, held in Oulu, Finland in May 2011. The 28 revised full papers were carefully revised and selected from 62 submissions and focus on the topics cloud, cluster, and grid computing; peer-to-peer computing; applications and HCI; modeling and verification; service architectures; middleware; and sensor networks.
Download or read book Low Power Design with High Level Power Estimation and Power Aware Synthesis written by Sumit Ahuja and published by Springer Science & Business Media. This book was released on 2011-10-22 with total page 186 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents novel research techniques, algorithms, methodologies and experimental results for high level power estimation and power aware high-level synthesis. Readers will learn to apply such techniques to enable design flows resulting in shorter time to market and successful low power ASIC/FPGA design.
Download or read book Handbook of Energy Aware and Green Computing Two Volume Set written by Ishfaq Ahmad and published by CRC Press. This book was released on 2016-02-03 with total page 1284 pages. Available in PDF, EPUB and Kindle. Book excerpt: Implementing energy-efficient CPUs and peripherals as well as reducing resource consumption have become emerging trends in computing. As computers increase in speed and power, their energy issues become more and more prevalent. The need to develop and promote environmentally friendly computer technologies and systems has also come to the forefront
Download or read book Toward a Power aware Internet written by and published by . This book was released on 2013 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The power consumption of Internet devices has traditionally been considered as a secondary design constraint after availability, performance, security, and usability --if it is considered at all. However, dramatic increases in bandwidth demand and the number of Internet-enabled devices are leading to growing interest in constructing ``green'' networks. These networks are more power efficient and exhibit greater power proportionality than existing networks. Contemporary networks are often comprised of devices that are nearly traffic agnostic in their power consumption, protocols which are oblivious to the energy implications of their operations, and management infrastructures that are unaware of power consumption. In this dissertation, we describe our research efforts toward understanding and minimizing network power consumption. We take an engineering approach, starting with empirical power measurement of real world devices. Next we create measurement-based models of devices which can be used in multiple contexts to evaluate alternative device and network architectures. We propose and evaluate a novel framework for computing power-aware routes over a network. Additionally, we generate power-aware topologies for commonly deployed network classes such as service provider, enterprise and datacenter networks. Finally, we design and develop new network auditing utilities that provide new insights to researchers and enable administrators to consider power consumption a primary design constraint. Our measurements and models are novel, as network power consumption has largely been considered in the context of the worst case for provisioning rather than real-time cost. Additionally, our testbed, topology and auditing contributions are applicable across a range of legacy, contemporary, and future network devices. Our work provides value to network researchers and practitioners by characterizing device power consumption and suggesting improvements for network deployments.
Download or read book Pervasive Computing written by Minyi Guo and published by CRC Press. This book was released on 2016-08-05 with total page 152 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book introduces fundamental concepts and theories in pervasive computing as well as its key technologies and applications. It explains how to design and implement pervasive middleware and real application systems, covering nearly all aspects related to pervasive computing. Key technologies in the book include pervasive computing-oriented resource management and task migration, mobile pervasive transaction, human computer interface, and context collection-oriented wireless sensor networks.
