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Using dynamic and static approach with compiler-assisted in power management for DVS-enabled embedded system

WSEAS Transactions on Computers 2007年第6期6卷 967-972页

作者： Chen, Tianzhou Huang, Jiangwei Qian, Jie Xiao, Liang Intel Embedded Technology Center College of Computer Science Zhejiang University ZheDa Road 38 Hangzhou Zhejiang 310027 China

Most of embedded systems are drove by the battery. The capacity of the battery is limited. The high power consumption is becoming a critical problem for devices which are battery-powered. In this paper we presented a new approach for power management. When the program is compiling, we partitioned the Programs into different regions by Complier statically. And partitioning or merging regions dynamically according the performance statistic. The code of each region could be run on different CPU setting according to their characteristic. The different CPU setting could consume different power. We use the DVS technique to set state of CPU. The results showed that using dynamic and static approach together can save more energy than only using static method.

关键词： embedded systems

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THU and ICRC at TRECVID 2007

THU and ICRC at TRECVID 2007

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TREC Video Retrieval Evaluation, TRECVID 2007

作者： Yuan, Jinhui Guo, Zhishan Lv, Li Wan, Wei Zhang, Teng Wang, Dong Liu, Xiaobing Liu, Cailiang Zhu, Shengqi Wang, Duanpeng Pang, Yang Ding, Nan Liu, Ying Wang, Jiangping Zhang, Xiujun Tie, Xiaozheng Wang, Zhikun Wang, Huiyi Xiao, Tongchun Liang, Yinyu Li, Jianmin Lin, Fuzong Zhang, Bo Li, JianGuo Wu, WeiXin Tong, Xiaofeng Ding, DaYong Chen, YuRong Wang, Tao Zhang, Yimin Department of Computer Science and Technology Tsinghua University Beijing China Scalable Statistical Computing Group in Application Research Lab MTL Intel China Research Center Beijing China

Shot boundary detection The shot boundary detection system in 2007 is basically the same as that of last year. We make three major modifications in the system of this year. First, CUT detector and GT detector use block based RGB color histogram with the different parameters instead of the same ones. Secondly, we add a motion detection module to the GT detector to remove the false alarms caused by camera motion or large object movements. Finally, we add a post-processing module based on SIFT feature after both CUT and GT detector. The evaluation results show that all these modifications bring performance improvements to the system. High-level feature extraction We try a novel approach, Multi-Label Multi-Feature learning (MLMF learning) to learn a joint-concept distribution on the regional level as an intermediate representation. Besides, we improve our Video diver indexing system by designing new features, comparing learning algorithms and exploring novel fusion algorithms. Based on these efforts in improving feature, learning and fusion algorithms, we achieve top results in HFE this year. This year, intelligent multimedia group in Department of computer science and technology, Tsinghua University and Scalable Statistical computing Group in Application Research Lab, MTL, intel China Research center took part in TRECVID 2007 as a joint team and submitted the results for all of the four tasks. In this paper, the methods of shot boundary detection, high level feature extraction and search are presented while rushes summarization is excluded since it is reported in the workshop during ACM MM 2007.

关键词： Feature extraction

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Operating-system aided power-aware policy for embedded peripheral device

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IMACS Multiconference on "Computational Engineering in Systems Applications", CESA

作者： Tianzhou, Chen Xinliang, Wu Jiangwei, Huang Intel-ZJU Embedded Technology Center College of Computer Science and Technology Zhejiang University Hangzhou Zhejiang 310027 China

ISBN: (纸本)7302139229

This paper presents a new framework for power reduction in embedded system by monitoring the system load and rescheduling the requests for devices. It focuses on the device that has different working states and when being idle, can be set into a power-down state. We use an "Up-Down" method to join the process, which initiates the requests to devices, Transferring Module and devices together. So the requirements specific to every request will be more detailed to power manager to make a decision. The request specific information is calculated in statistical method, which insures the accuracy. Transitions between different states of the device are achieved by breaking an accumulation threshold which evolves from the request specific information mentioned above. Using this framework, running period will be more intensive and there are longer idle period, devices do not have to change states frequently. Because the action of changing states is power consuming, the framework can get obvious reduction in power consumption. We implement this framework on an intel XScale PXA255 Development Board and on average it can save more than 20% power compared to other power-aware policies.

关键词： Power management

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External representations in ubiquitous computing design and the implications for design tools

External representations in ubiquitous computing design and ...

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6th ACM Conference on Designing Interactive Systems, DIS 2006

作者： Dow, Steven Saponas, T. Scott Li, Yang Landay, James A. College of Computing GVU Center Georgia Institute of Technology Atlanta GA 30332 United States DUB Group Computer Science and Engineering University of Washington Seattle WA 98105-4615 United States Intel Research Seattle 1100 NE 45th Street Seattle WA 98105 United States

ISBN: (纸本)1595933417

One challenge for ubiquitous computing is providing appropriate tools for professional designers, thus leading to stronger user-valued applications. Unlike many previous tool-builders' attempts to support a specific technology, we take a designer-centered stance, asking the question: how do professional designers externalize ideas for off-the-desktop computing and how do these inform next generation design tools? We report on interviews with designers from various domains, including experience, interaction, industrial, and space designers. The study broadly reveals perceived challenges of moving into a non-traditional design medium, emphasizes the practice of storytelling for relating the context of interaction, and through two case studies, traces the use of various external representations during the design progression of ubicomp applications. Using paperprototyped "walkthroughs" centered on two common design representations (storyboards and physical simulations), we formed a deeper understanding of issues influencing tool development. We offer guidelines for builders of future ubicomp tools, especially early-stage conceptual tools for professional designers to prototype applications across multiple sensors, displays, and physical environments. Copyright 2006 ACM.

关键词： Ubiquitous computing

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The impact of pre-patterns on the design of digital home applications

The impact of pre-patterns on the design of digital home app...

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Proceedings of the Conference on Designing Interactive Systems, DIS2006

作者： Saponas, T. Scott Prabaker, Madhu K. Abowd, Gregory D. Landay, James A. DUB Group Computer Science and Eng. University of Washington Seattle WA 98105 United States Intel Research Seattle 1100 NE 45th Street Seattle WA 98105 United States Human-Computer Interaction Institute Carnegie Mellon University Pittsburgh PA 15213 United States College of Computing GVU Center Georgia Institute of Technology Atlanta GA United States

ISBN: (纸本)1595933417

Recent research suggests design pre-patterns, structured collections of evidence-based research and design knowledge, provide a useful resource for design activities in emerging application domains. This paper extends previous research by exploring the impact of pre-patterns and tools to support pre-pattern exploration for the domain of ubiquitous computing in the home. We conducted an empirical study of 44 designers engaged in a two hour concentrated brainstorming and design task for the home of the future. Our results show pre-patterns are an easily adopted resource for designers that can impact even the earliest of design activities. We also provide insights for future development of pre-patterns based on designer feedback. Copyright 2006 ACM.

关键词： Computer graphics

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GridBeans: Support e-science and Grid Applications

GridBeans: Support e-Science and Grid Applications

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IEEE International Conference on e-science and Grid computing

作者： Ralf Ratering Alexander Lukichev Morris Riedel Daniel Mallmann A. Vanni C. Cacciari S. Lanzarini K. Benedyczak M. Borcz R. Kluszcynski Piotr Bala Gert Ohme Software and Solutions Group Intel Corporation USA Research Centre Juelich Central Institute of Applied Mathematics Germany High Performance Computing Department CINECA Italy Faculty of Mathematics and Computer Science Torun Nicolaus Copernicus University Poland Interdiscipl. Center for Mathem. and Comp Modelling Warsaw University of Technology Poland Solutions for Research T-Systems Corporation USA

Large-scale scientific research often relies on the collaborative use of Grid and e-science infrastructures that provide computational or storage related resources. One of the ideas of these modern infrastructures is to facilitate the routine interaction of scientists and their workflows with advanced problem solving tools and computational resources. While many production Grid projects and e-science infrastructures have begun to offer services for the usage of resources to end-users during the past several years, the corresponding emerging standards defined by GGF and OASIS still appear to be in flux. In this paper, we present the GridBean technology that bridges the gap between the constantly changing basic Grid or e-science infrastructures and the need of stable application development environments for the Grid users.

关键词： Grid computing Web services Quantum computing Standards development Application software Mathematics High performance computing International collaboration Middleware Standards organizations

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Control, deception, and communication: Evaluating the deployment of a location-enhanced messaging service 05

Control, deception, and communication: Evaluating the deploy...

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7th International Conference on Ubiquitous computing, UbiComp 2005

作者： Iachello, Giovanni Smith, Ian Consolvo, Sunny Abowd, Gregory D. Hughes, Jeff Howard, James Potter, Fred Scott, James Sohn, Timothy Hightower, Jeffrey LaMarca, Anthony College of Computing GVU Center Georgia Institute of Technology Atlanta GA United States Intel Research Seattle WA United States Department of Computer Science and Engineering University of Washington Seattle WA United States Intel Research Cambridge United Kingdom Computer Science and Engineering University of California San Diego San Diego CA United States

ISBN: (纸本)3540287604

We report on a two-week deployment of a peer-to-peer, mobile, location-enhanced messaging service. This study is specifically aimed at investigating the need for and effectiveness of automatic location disclosure mechanisms, the emerging strategies to achieve plausible deniability, and at understanding how place and activity are used to communicate plans, intentions and provide awareness. We outline the research that motivated this study, briefly describe the application we designed, and provide details of the evaluation process. The results show a lack of value of automatic messaging functions, confirm the need for supporting plausible deniability in communications, and highlight the prominent use of activity instead of place to indicate one's location. Finally, we offer suggestions for the development of social mobile applications. © Springer-Verlag Berlin Heidelberg 2005.

关键词： Mobile telecommunication systems

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Message from HPSEC workshop co-chairs

Proceedings of the International Conference on Parallel Proc...

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Proceedings of the International Conference on Parallel Processing Workshops 2006年 xix-xxi页

作者： Zhu, Ming Yang, Laurence T. Tourino, Juan Pan, Lei Brent, Richard P. Dongarra, Jack Gustafson, John Joubert, Gerhard Pan, Yi Zhang, Xiaodong Abawajy, Jemal H. Aubanel, Eric Bahi, Jacques Banicescu, Ioana Bhalla, Subhash Bic, Lubomir F. Biswas, Rupak Bourgeois, Anu Buecker, Martin Cabaleiro, Jose Carlos Cai, Xing Carretero, Jesus Chen, Jinjun Dai, Yuanshun De, Mello, Rodrigo Dillencourt, Michael B. Di, Martino, Beniamino Doallo, Ramon Doncescu, Andrei Gravvanis, George A. Huang, Chun-Hsi Ierotheou, Constantinos Jie, Wei Karatza, Helen Koziris, Nectarios Lei, Zhou Leng, Tau Li, Yiming Martin, Maria J. Michielse, Peter H. Narravula, Harsha Ng, Michael K. Ni, Jun O'Donnell, John Quintana-Orti, Enrique Rauber, Thomas Runger, Gudula Salem, Fatima Abu Sarker, Biplab Kumer Sedukhin, Stanislav G. Shi, Hongchi Skjellum, Tony Strazdins, Peter Thulasiram, Ruppa K. Tian, Xinmin Tomko, Karen Van, Engelen, Robert Verdoscia, Lorenzo Wu, Jiesheng Xiao, Bin Xu, Chengzhong Xue, Jingling Yang, Xiaoguang Zheng, Yao Zhou, Bingbing Zhou, Xiaobo Zlatev, Zahari Carino, Ricolindo Couturier, Raphael Guo, Zhuang Wang, Yang Ding, Meng Zekri, Ahmed Oracle United States St. Francis Xavier University Canada University of A Coruña Spain JPL California Institute of Technology United States Oxford University United Kingdom University of Tennessee Oak Ridge National Laboratory United States Sun Microsystems Inc. United States Technical University of Clausthal Germany Georgia State University United States College of William and Mary National Science Foundation United States Deakin University Australia University of New Brunswick Canada University of Franche-Comté France Mississippi State University United States University of Aizu Japan University of California Irvine United States NASA Ames Research Center United States Aachen University of Technology Germany University of Santiago de Compostela Spain University of Oslo Norway Universidad Carlos III de Madrid Spain Swinburne University of Technology Australia Indiana University Purdue University United States University of Sao Paulo Brazil Second University of Naples Italy University of West French Indies France Democritus University of Thrace Greece University of Connecticut United States University of Greenwich United Kingdom Institute of High Performance Computing Singapore Singapore Aristotle University of Thessaloniki Greece National Technical University of Athens Greece Louisiana State University United States Supermicro Computer Inc. United States National Chiao Tung University Taiwan National Computing Facilities Foundation Netherlands Intel United States University of Hong Kong Hong Kong University of Iowa United States University of Glasgow United Kingdom University of Jaime I Spain University of Bayreuth Germany Chemnitz University of Technology Germany American University of Beirut Lebanon University of Missouri Columbia United States University of Alabama Birmingham United States Australian National University Australia University of Manitoba Canada Florida State University United States Italy Askjeeves United States Hong Kong Polytechnic U

No abstract available

ISBN: (纸本)0769526373

No abstract available

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Journal of Information science and Engineering: Editorial notice

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Journal of Information science and Engineering 2005年第5期21卷 i-ii页

作者： Lee, Der-Tsai Amato, Nancy M. Chang, Shih-Fu Chen, Homer H. Chen, Tsuhan Hsu, Tsan-Sheng Hwang, Jenq-Neng Kuo, Sy-Yen Kuo, Tei-Wei Li, Chung-Sheng Tokuyama, Takeshi Wing, Jeannette Wu, Tzong-Chen Yen, John Computer Science at Texas A and M University United States Parasol Laboratory United States IEEE Transactions on Parallel and Distributed Systems Computing Research Association's Committee on the Status of Women in Computing Research CRA-W's Distributed Mentor Program United States Department of Electrical Engineering Columbia University United States Lab. United States College of Electrical Engineering and Computer Science National Taiwan University Taiwan IEEE Transactions on Circuits and Systems for Video Technology IEEE Department of Electrical and Computer Engineering Carnegie Mellon University Pittsburgh PA United States ACM ACM SIGACT IEEE Computer Society IICM Austria Research and Development of the Department Multimedia Signal Processing Technical Committee IEEE Signal Processing Society United States IEEE Transactions on Circuits and systems for Video Technology College of Electrical Engineering and Computer Science National Taiwan Ocean University Keelung Taiwan Department of Electrical Engineering National Taiwan University Taiwan Department of Computer Science and Information Engineering National Taiwan University Taipei Taiwan IEEE Technical Committee on Real-Time Systems Computer Science Division IBM T.J. Watson Research Center United States IBM Research Division Graduate School of Information Sciences Tohoku University Japan ACM IPSJ Mathematical Society of Japan Japan Department of Computer Science Computer Science Department Carnegie Mellon University United States National Academies of Science's Computer Science and Telecommunications Board United States Microsoft's Trustworthy Academic Advisory Board Intel Research Pittsburgh's Advisory Board United States Dartmouth's Institute for Security Technology Studies Advisory Committee Canada Sloan Research Fellowships Program Committee United States ACM Taiwan China Information Sciences and Technology Pennsylvania State University United States Laboratory for Intelligent Agents Penn State's School of Info

No abstract available

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Implementation lessons of performance prediction tool for parallel conservative simulation 6

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6th International European Conference on Parallel computing, Euro-Par 2000

作者： Lim, Chu-Cheow Low, Yoke-Hean Gan, Boon-Ping Cai, Wentong Intel Corporation SC12-305 2000 Mission College Blvd Santa ClaraCA95052-8119 United States Programming Research Group Oxford University Computing Laboratory University of Oxford OxfordOX1 3QD United Kingdom Gintic Institute of Manufacturing Technology 71 Nanyang Drive Singapore638075 Singapore Center for Advanced Information Systems School of Applied Science Nanyang Technological University Singapore639798 Singapore

ISBN: (纸本)9783540679561

Performance prediction is useful in helping parallel programmers answer questions such as speedup scalability. Performance prediction for parallel simulation requires first working out the performance analyzer algorithms for specific simulation protocols. In order for the prediction results to be close to the results from actual parallel executions, there are further considerations when implementing the analyzer. These include (a) equivalence of code between the sequential program and parallel program, and (b) system effects (e.g. cache miss rates and synchronization overheads in an actual parallel execution). This paper describes our investigations into these issues on a performance analyzer for a conservative, "super-step" (synchronous) simulation protocol. © Springer-Verlag Berlin Heidelberg 2000.

关键词： Forecasting

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