检索结果-内蒙古大学图书馆

A grid-powered framework to support courses on distributed programming

IEEE TRANSACTIONS ON EDUCATION 2007年第1期50卷 27-33页

作者： Maggi, Paolo Sisto, Riccardo Politecn Turin Dipartimento Automat & Informat I-10129 Turin Italy

Grading programming assignments of courses on distributed programming can greatly benefit from extensive testing, especially if quality aspects such as portability, robustness, security, and performance have to be evaluated. this paper presents a framework that was developed at the Turin Polytechnic, Turin, Italy, to enable seamless and fast implementation of Web portals for automated management of student programming assignments. By using a computational grid facility to schedule testing jobs on different hosts, the framework offers high flexibility and scalability, thus enabling computationally intensive tests and some kinds of distributed tests, such as portability tests and field tests, which otherwise would be difficult to automate. the grid can be made of ordinary and even nondedicated or dismissed PCs, which, according to the authors' experience, is enough to offer students online extensive testing services. the framework was successfully used in two courses on distributed programming, located at different sites, partially overlapped in time, and attended by a total of 60 students. However, the framework should be scalable enough to work with increasing numbers of students and courses.

关键词： automated grading assistance distributed programming e-learning grid portals

来源：评论

学校读者我要写书评

暂无评论

A replication software architecture (RSA) for supporting irregular applications on wide-area distributed computing environments

引用

5th international symposium on parallel and distributed Processing and Applications/ISPA 2007 international Workshops

作者： No, Jaechun Park, Chang Won Park, Sung Soon Sejong Univ Coll Elect & Informat Engn Dept Comp Software Seoul South Korea Korea Elect Technol Inst Intelligent IT Syst Res Ctr Seongnam South Korea Anyang Univ Coll Sci & Engn Dept Comp Sci & Engn Anyang South Korea

ISBN: (纸本)9783540747413

In the distributed computing environment, many large-scale scientific applications are irregular applications which perform their computation and I/O on an irregularly discretized mesh. However, most of the previous work in the area of irregular applications focuses mainly on the local environments. In distributed computing environments, since many remotely located scientists should share the data to produce useful results, providing a consistent data replication mechanism to minimize the remote data access time is a critical issue in achieving high-performance bandwidth. We have developed a replication software architecture (RSA) that enables the geographically distributed scientists to easily replicate irregular computations with minimum overheads, while safely sharing large-scale data sets to produce useful results. Since RSA uses database support to store the data-related and computational-related metadata, it can easily be ported to any computing environments. In this paper, we describe the design and implementation of RSA for irregular applications and present performance results on Linux clusters.

关键词： Software architecture

来源：评论

学校读者我要写书评

暂无评论

An information aggregation scheme of multi-node in ubiquitous sensor networks

An information aggregation scheme of multi-node in ubiquitou...

引用

5th international symposium on parallel and distributed Processing and Applications/ISPA 2007 international Workshops

作者： Park, Haeryong Lime, Seongan Yie, Ikkwon Kim, Hyun Chun, Kilsoo Lee, Jaeil KISA Seoul South Korea Inha Univ Dept Math Incheon South Korea

ISBN: (纸本)9783540747666

Mobile networking, mobile systems and applications and ubiquitous computing infrastructures are of strongly growing importance in the IT sector in general, and for the parallel and distributed computing community. Particularly, when an signed (authenticated), information of multi-node is aggregated in ubiquitous sensor networks, the number of the signing information is very small. thus, signature scheme which signs information has strong unforgeability. In 2005 Yu and Chen proposed threshold signature scheme [12]. their scheme has a high efficiency. But, their scheme is not suitable for ubiquitous sensor networks because their scheme has no strong unforgeability. In this paper, we modify their scheme so that modified scheme is suitable for ubiquitous sensor networks. Also, our scheme has a good efficiency, and a smaller secret key than other cryptosystems with a similar security level.

关键词： Ubiquitous computing

来源：评论

学校读者我要写书评

暂无评论

Extracting coarse-grained parallelism in program loops with the slicing framework

Extracting coarse-grained parallelism in program loops with ...

引用

6th international symposium on parallel and distributed computing

作者： Beletska, Anna Bielecki, Wlodzimierz Pietro, Pierluigi San Politecn Milan Dipartimento Elettr & Informaz Via Ponzio 34-5 Milan Italy Tech Univ Szczecin Fac Comp Sci Szczecin Poland

ISBN: (纸本)9780769529172

A novel approach for extracting coarse-grained parallelism being represented with independent and synchronization-requiring slices is presented. Each slice is composed of dependent iterations of perfectly nested loops. Presented algorithms work for both uniform and non-uniform loops. Our approach, based on operations on relations and sets, requires exact dependence analysis. Examples illustrating the proposed algorithm and results of experiments are presented.

关键词： parallel processing systems

来源：评论

学校读者我要写书评

暂无评论

Continuous kernel-based outlier detection over distributed data streams

Continuous kernel-based outlier detection over distributed d...

引用

5th international symposium on parallel and distributed Processing and Applications/ISPA 2007 international Workshops

作者： Su, Liang Han, Weihong Zou, Peng Jia, Yan Natl Univ Def Technol Sch Comp Sci Changsha 410073 Peoples R China

ISBN: (纸本)9783540747666

Stream data are often transmitted over a distributed network, but in many cases, are too voluminous to be collected in a central location. Instead, we must perform distributed computations, guaranteeing high quality results in real-time even as new data arrive. In this paper, firstly, we formalize the problem of continuous outlier detection over distributed evolving data streams. then, two novel outlier measures and algorithms are proposed which can identify outliers in a single pass. Furthermore, our experiments with synthetic and real data show that the proposed methods are both efficient and effective compared with existing outlier detection algorithms.

关键词： distributed computer systems

来源：评论

学校读者我要写书评

暂无评论

Dual communication network in program control based on global application state monitoring

Dual communication network in program control based on globa...

引用

6th international symposium on parallel and distributed computing

作者： Borkowski, J. Tudruj, M. Polish Japanese Inst Informat Technol 86 Koszykowa Str Warsaw Poland Polish Acad Sci Inst Comp Sci Warsaw Poland

ISBN: (纸本)9780769529172

We discuss the efficiency of a novel parallel/distributed application control method, based on global state monitoring. Processes report their local states to monitors. the monitors construct global states, analyze them and send control signals to processes when necessary. the addition of a special fast control network, responsible for transferring control information, is proposed in this paper. the efficiency is tested in simulation of sample Branch and Bound parallel computations. We show, that multicast capability of a network plays an important role in the resulting system efficiency. Other network parameters, such as latency or bandwidth, are significant only under proper conditions. We identify these conditions, demonstrating that 5-9 times speedup can be obtained by addition of a fast control network.

关键词： distributed computer systems

来源：评论

学校读者我要写书评

暂无评论

A data allocation method for efficient content-based retrieval in parallel multimedia databases

A data allocation method for efficient content-based retriev...

引用

5th international symposium on parallel and distributed Processing and Applications/ISPA 2007 international Workshops

作者： Manjarrez-Sanchez, Jorge Martinez, Jose Valduriez, Patrick Univ Nantes INRIA F-44035 Nantes France

ISBN: (纸本)9783540747666

Scaling up to large multimedia databases with high dimensional metadata descriptions while providing fast content-based retrieval (CBR) is getting increasingly important for many applications. To address this objective, we strive to exploit the popular parallel shared-nothing architecture. In this context, a major problem is data allocation on the different nodes in order to yield efficient parallel content-based retrieval. In this paper, assuming a clustering process and based on a complexity analysis of CBR, we propose a data allocation method with an optimal number of clusters and nodes. We validated our method through experiments with different high dimensional synthetic databases and implemented a query processing algorithm for full k nearest neighbors.

关键词： Metadata

来源：评论

学校读者我要写书评

暂无评论

A transparent protocol scheme based on UPnP AV for ubiquitous home

A transparent protocol scheme based on UPnP AV for ubiquitou...

引用

5th international symposium on parallel and distributed Processing and Applications/ISPA 2007 international Workshops

作者： Park, Jiyun Lee, Hyunju Kim, Sangwook Kyungpook Natl Univ Dept Comp Sci Taegu South Korea

ISBN: (纸本)9783540747666

there are a variety of AV devices and multimedia content in the ubiquitous home and the sharing of content needs to have high quality of transfer by using optimized transport protocol for the each content. this paper presents the design and implementation of our proposed scheme that is based on UPnP AV framework which can support various transport protocol transparently. We validated and evaluated our proposed scheme and experimental results show that it can stream content effectively.

关键词： Ubiquitous computing

来源：评论

学校读者我要写书评

暂无评论

parallel matrix multiplication based on dynamic SMP clusters in SoC technology

Parallel matrix multiplication based on dynamic SMP clusters...

引用

5th international symposium on parallel and distributed Processing and Applications/ISPA 2007 international Workshops

作者： Tudruj, Marek Masko, Lukasz Polish Acad Sci Inst Comp Sci 21 ordana Str PL-01237 Warsaw Poland Polish Japanese Inst Informat Technol PL-02008 Warsaw Poland

ISBN: (纸本)9783540747666

the paper concerns a special architecture of dynamic shared memory processor (SMP) clusters organized at program run-time. In this architecture, designed for implementation in System on Chip technology, a new mechanism of the communication on the fly is provided. It is a combination of dynamic processor switching between SNIP clusters and parallel data reads on the fly. this mechanism enables direct communication between processor data caches and eliminates many data transactions on memory busses. the paper presents the principles of the new architecture and evaluates its efficiency for execution of matrix multiplication with recursive matrix decomposition into quarters. the evaluation is done by simulation experiments with symbolic execution of parallel program graphs with different parallelization grain.

关键词： Storage allocation (computer)

来源：评论

学校读者我要写书评

暂无评论

the 5th international symposium on Quantum theory and Symmetries (QTS5)

引用

Journal of Physics A: Mathematical and theoretical 2008年第30期41卷

作者： M Gadella J M Izquierdo S Kuru J Negro M A del Olmo Departamento de Fisica Teórica Universidad de Valladolid 47011 Valladolid Spain Department of Physics Faculty of Science Ankara University 06100 Ankara Turkey

this special issue of Journal of Physics A: Mathematical and theoretical appears on the occasion of the 5th international symposium on Quantum theory and Symmetries (QTS5), held in Valladolid, Spain, from 22–28 July 2007. this is the fith in a series of conferences previously held in Goslar (Germany) 1999, QTS1; Cracow (Poland) 2001, QTS2; Cincinnati (USA) 2003, QTS3; and Varna (Bulgaria) 2005, QTS4. the QTS5 symposium gathered 181 participants from 39 countries working in different fields of theoretical physics. the spirit of the QTS conference series is to join researchers in a wide variety of topics in theoretical physics, as a way of making accessible recent results and the new lines of different fields. this is based on the feeling that it is good for a physicist to have a general overview as well as expertise in his/her own field. there are many other conferences devoted to specific topics, which are of interest to gain deeper insight in many technical aspects and that are quite suitable for discussions due to their small size. However, we believe that general conferences like this are interesting and worth keeping. We like the talks, in both plenary and parallel sessions, which are devoted to specific topics, to be prepared so as to be accessible to any researcher in any branch of theoretical physics. We think that this objective is compatible with rigour and high standards. As is well known, similar methods and techniques can be useful for many problems in different fields. We hope that this has been appreciated during the sessions of the QTS5 conference. the QTS5 conference offered the following list of topics: 1. Symmetries in string theory, quantum gravity and related topics 2. Symmetries in quantum field theories, conformal and related field theories, lattice and noncommutative theories, gauge theories *** computing, information and control 4. Foundations of quantum theory 5. Quantum optics, coherent states, Wigner functions 6. Dynamical and integr

关键词：

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：