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International Conference on High Performance computing in the Asia-Pacific Region

作者： Tianyi Zang Wei Jie T. Hung Zhou Lei S.J. Turner Wentong Cai Ming Zhu C. Katsinis Software and Computing Programme Institute of High Performance Computing Singapore School of Computer Engineering Nanyang Technological University Singapore Department of Electrical and Computer Engineering Drexel University USA

The information service is a key component of a grid environment and critical to the operation of a computational grid. This work presents an information service that complies with the OGSI (open grid services infrastructure) framework. This information service is a hierarchical structure which consists of the virtual organization level, site level and node level. We propose two models of information data organization for the information service, i.e. source-data based model and meta-data based model. Two sets of experiments were conducted to evaluate the performance of the information service. The experimental results show that the amount of data communicated between clients and the information service, and among the component services is the key factor to influence the scalability of the information service. We also found that the meta-data based model is an effective solution to improve the scalability of the information service.

关键词： Information management Computer architecture High performance computing Grid computing Scalability Computerized monitoring Environmental management Computer aided instruction software performance Resource management

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Usability-supporting architectural patterns

Usability-supporting architectural patterns

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Proceedings - 26th International Conference on software engineering, ICSE 2004

作者： Bass, Len John, Bonnie E. Juristo, Natalia Sanchez-Segura, Maria-Isabel Carnegie Mellon University Software Engineering Institute United States Carnegie Mellon University Human-Computer Interaction Institute United States Technical University of Madrid School of Computing Spain Carlos III University of Madrid Computer Science Department Spain

software architects have techniques to deal with many quality attributes such as performance, reliability, and maintainability. Usability, however, has traditionally been concerned primarily with presentation and not been a concern of software architects beyond separating the user interface from the remainder of the application. In this tutorial, we present usability-supporting architectural patterns. Each pattern describes a usability concern that is not supported by separation alone. For each concern, a usability-supporting architectural pattern provides the forces from the characteristics of the task and environment, the human, and the state of the software to motivate an implementation independent solution cast in terms of the responsibilities that must be fulfilled to satisfy the forces. Furthermore, each pattern includes a sample solution implemented in the context of an overriding separation based pattern such as J2EE Model View Controller.

关键词： Computer architecture

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Deriving probabilistic semantics via the ‘weakest completion’

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6th International Conference on Formal engineering Methods, ICFEM 2004

作者： Jifeng, He Morgan, Carroll McIver, Annabelle International Institute for Software Technology United Nations University Macau China Department of Computer Science and Engineering The University of New South Wales Sydney Australia Department of Computing Macquarie University Sydney Australia SEI of East China Normal University China

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A robust search-based approach to project management in the presence of abandonment, rework, error and uncertainty

A robust search-based approach to project management in the ...

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International Symposium on software Metrics

作者： G. Antoniol M. Di Penta M. Harman Department of Engineering RCOST-Research Centre on Software Technology University of Sannio Benevento Italy Department of Information Systems and Computing Brunei University Uxbridge UK

Managing a large software project involves initial estimates that may turn out to be erroneous or that might be expressed with some degree of uncertainty. Furthermore, as the project progresses, it often becomes necessary to rework some of the work packages that make up the overall project. Other work packages might have to be abandoned for a variety of reasons. In the presence of these difficulties, optimal allocation of staff to project teams and teams to work packages is far from trivial. This paper shows how genetic algorithms can be combined with a queuing simulation model to address these problems in a robust manner. A tandem genetic algorithm is used to search for the best sequence in which to process work packages and the best allocation of staff to project teams. The simulation model, that computes the project estimated completion date, guides the search. The possible impact of rework, abandonment and erroneous or uncertain initial estimates are characterised by separate error distributions. The paper presents results from the application of these techniques to data obtained from a large scale commercial software maintenance project.

关键词： Robustness Project management Uncertainty Packaging software maintenance Genetic algorithms Computer errors Computational modeling Application software Large-scale systems

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Work in progress-problems and progress in software engineering curriculum materials

Work in progress-problems and progress in software engineeri...

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Frontiers in Education (FIE) Conference

作者： G.W. Hislop T.B. Hilburn M.J. Lutz W.M. McCracken M.J. Sebern College of Information Science and Technology Drexel University USA Department of Computing Embrey-Riddle Aeronautical University USA Department of Software Engineering Rochester Institute of Technology USA College of Computing Georgia Institute of Technology USA Department of Electrical Engineering and Computer Science Milwaukee School of Engineering USA

SWENET, the network community for software engineering education, is an NSF funded project to develop curriculum modules of value to faculty members desiring to incorporate software engineering concepts in new or existing courses. By design, the modules are self-contained instructional units ranging from a single lecture to approximately one week of course material. In this way, instructors can adopt, adapt, and arrange modules as appropriate to their courses. This presentation will provide an update on the status of the project including a report of current progress and problems encountered. The session will also address the future of the course materials collection and solicit input on ways to provide ongoing support to the community of software engineering researchers.

关键词： software engineering Educational technology Educational institutions Computer networks Educational programs Building materials Information science Materials science and technology Computer science education Timing

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Grid computing in Taiwan

Grid computing in Taiwan

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IEEE Workshop on Future Trends of Distributed computing Systems

作者： Chao-Tung Yang W.C. Chu Hihg-performance Computing Laboratory Tunghai University Taichung Taiwan Software Engineering and Technology Center Department of Computer Science and Information Engineering Tunghai University Taichung Taiwan

ISBN: (纸本)0769521185

Grid computing focuses on aggregating resources (e.g., processor cycles, disk storage and contents) from a large-scale computing environment. It intends to deliver high-performance distributed platforms for computationand/or data-intensive applications. In this paper, we study the enabling techniques for Grid computing for high-performance computing. Our goals are to: (1) understand the design of these key components; (2) set up a Grid computing platform; (3) learn how to create Grid-enabled high-performance applications; and (4) share experiences on constructing such platforms and applications from the status of Taiwan.

关键词： Grid computing Conferences Distributed computing

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Algorithmic-Parameter optimization of a parallelized split-step fourier transform using a modified BSP cost model 04

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Proceedings of the Second international conference on Parallel and Distributed Processing and Applications

作者： Elankovan Sundararajan Malin Premaratne Shanika Karunasekera Aaron Harwood Department of Computer Science and Software Engineering The University of Melbourne Carlton Victoria Australia Advanced Computing and Simulation Laboratory Department for Electrical and Computer System Engineering Monash University Clayton Victoria Australia

ISBN: (纸本)9783540241287

Adaptive algorithms are increasingly acknowledged in leading parallel and distributed research. In the past, algorithms were manually tuned to be executed efficiently on a particular architecture. However, interest has shifted towards algorithms that can adapt themselves to the computational resources. A cost model representing the behavior of the system (i.e. system parameters) and the algorithm (i.e algorithm parameters) plays an important role in adaptive parallel algorithms. In this paper, we contribute a computational model based on Bulk Synchronous Parallel processing that predicts performance of a parallelized split-step Fourier transform. We extracted the system parameters of a cluster (upon which our algorithm was executed) and showed the use of an algorithmic parameter in the model that exhibits optimal behavior. Our model can thus be used for the purpose of self-adaption.

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Teracluster LSSC-II--Its designing principles and applications in large scale numerical simulations

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中国科学A辑（英文版） 2004年第z1期47卷 53-68页

作者： Zhang Linbo Chen Shiyi LI Xinliang CAO Jianwen ZHANG Wensheng GONG Xingao State Key Laboratory of Scientific and Engineering Computing Academy of Mathematics and System Sciences Chinese Academy of Sciences Beijing 100080 China Department of Mechanical Engineering The Johns Hopkins University and Center for Computational Science and Engineering Peking University Beijing 100875 China Institute of Mechanics Chinese Academy of SciencesBeijing 100080 China Parallel Computing Laboratory Institute of Software Chinese Academy of Sciences Beijing 100080 China Academy of Mathematics and System Sciences Chinese Academy of Sciences Beijing 100080 China Surface Physics Laboratory National Key Laboratory Fudan University Shanghai 200433 Institute of Solid State Physics Chinese Academy of Sciences Hefei 230031 China

The teracluster LSSC-II installed at the State Key Laboratory of Scientific and engineering computing, Chinese Academy of Sciences is one of the most powerful PC clusters in China. It has a peek performance of 2Tflops. With a Linpack performance of 1.04Tflops, it is ranked at the 43rd place in the 20th TOP500 List (November 2002), 51st place in the 21st TOP500 List (June 2003), and the 82nd place in the 22nd TOP500 List (November 2003) with a new Linpack performance of 1.3Tflops. In this paper, we present some design principles of this cluster, as well as its applications in some large-scale numerical simulations.

关键词： high performance computing PC cluster large scale numerical simulations

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The dimensions of variation in the teaching of data structures

The dimensions of variation in the teaching of data structur...

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ITiCSE 2004 - 9th Annual SIGCSE Conference on Innovation and Technology in Computer Science Education

作者： Lister, Raymond Tenenberg, Josh Box, Ilona Morrison, Brians Westbrook, D. Suzanne University of Technology Sydney Faculty of Information Technology Sydney NSW 2007 Australia University of Washington Tacoma Institute of Technology 1900 Commerce St. Tacoma WA 98402-3100 University of Western Sydney School of Computing and IT Penrith NSW 1797 Australia Southern Polytechnic State University School of Computing and Software Engineering Marietta GA 30060 University of Arizona Department of Computer Science Tucson AZ 85721

The current debate about the teaching of data structures is hampered because, as a community, we usually debate specifics about data structure implementations and libraries, when the real level of disagreement remains implicit - the intent behind our teaching. This paper presents a phenomenographic study of the intent of CS educators for teaching data structures in CS2. Based on interviews with Computer Science educators and analysis of CS literature, we identified five categories of intent: developing transferable thinking, improving students' programming skills, knowing "what's under the hood", knowledge of software libraries, and component thinking. The CS community needs to first debate at the level of these categories before moving to more specific issues. This study also serves as an example of how phenomenographic analysis can be used to inform debate on syllabus design in general. Copyright 2004 ACM.

关键词： Data structures

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A language for description and verification of mobile agent algorithms

A language for description and verification of mobile agent ...

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International Conference on Computer and Information Technology (CIT)

作者： Xuhui Li Jiannong Cao Yanxiang He The State Key Laboratory of Software Engineering Wuhan University of China Wuhan China Department of Computing Hong Kong Polytechnic University Hong Kong China

ISBN: (纸本)0769522165

Mobile agent technology has been widely adopted in network computing, whereas it remains a problem to design and verify the mobile agent algorithms in a platform independent way. In this paper, we propose a script language called SMAL to design the mobile agent algorithm. The semantics of SMAL is briefly introduced with its execution model. Furthermore, to verify the agent program in SMAL, a transformation function for converting SMAL program to Mobile UNITY specification is presented, which would facilitate making use of UNITY-logic to prove the correctness properties of the program.

关键词： Mobile agents Algorithm design and analysis Laboratories Design engineering Computer networks Concrete Helium software algorithms Processor scheduling Distributed computing

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