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3rd Annual Conference on Communication Networks and Services Research

作者： Vassev, E Paquet, J Concordia Univ Dept Comp Sci & Software Engn Montreal PQ H3G 1M8 Canada

ISBN: (纸本)0769523331

This article is an overview of the GIPSY Demand Migration System (DMS). This system brings a Demand Driven Execution Engine like the one used in the GIPSY to a high level of distributiveness and interoperability of operational nodes, by mixing together advanced distributed technologies. The main Demand Migration System's artifacts are discussed, and their different distributions within the GIPSY are surveyed. The article concludes with a presentation of a successful GIPSY Demand Migration implementation, based on JINI. This paper describes only the aspects of the GIPSY Demand Migration, i.e. it does not deal with load balancing and efficiency aspects of the GIPSY, as these are to be tackled by other subsystems of the GIPSY.

关键词： GIPSY distributed computing JIM javaspaces demand-driven execution

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Fast calculation of computer-generated Fresnel hologram utilizing distributed parallel processing and array operation

Fast calculation of computer-generated Fresnel hologram util...

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19th Congress of the International-Commission-for-Optics

作者： Nishi, S Yuizono, T Mori, K Nakayama, S Kagoshima Univ Fac Engn Kagoshima 8900065 Japan

Computer-generated Fresnel hologram (Fresnel CGH) for 3-D object can be made by calculation of Fresnel diffraction., However, since-diffraction computing is complicated, it is-required huge calculation time. In this p... 详细信息

ISBN: (纸本)0819445967

关键词： holography computer-generated hologram Fresnel diffraction projected image fast calculation array operation distributed parallel processing javaspaces

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A quantitative comparison of load balancing approaches in distributed object computing systems

A quantitative comparison of load balancing approaches in di...

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25th Annual International Computer Software and Applications Conference (COMPSAC 2001)

作者： Cheung, LS Kwok, YK Univ Hong Kong Dept Elect & Elect Engn Hong Kong Hong Kong Peoples R China

ISBN: (纸本)0769513727

Several load balancing schemes are recently proposed for distributed object computing systems, which are widely envisioned to be the desired distributed software development paradigm due to the higher modularity and the capability of handling machine and operating system heterogeneity. However, while the rationales and mechanisms employed are dramatically different, the relative strengths and weaknesses of these approaches are unknown, making it difficult for a practitioner to choose an appropriate approach for the problem at hand. In this paper, we describe in detail three representative approaches, which are all practicable, and present a quantitative comparison using our experimental distributed object computing platform. Among these three approaches, namely, javaspaces based, request redirection based, and fuzzy decision based, we find that the fuzzy decision based algorithm outperforms the other two considerably.

关键词： distributed object computing load balancing Java javaspaces Jini fuzzy decision

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The Gemini online data processing system

The Gemini online data processing system

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Conference on Optimizing Scientific Return for Astronomy through Information Technologies

作者： Walker, S Gillies, K Brighton, A AURA Gemini Observ So Operat Ctr La Serena Chile

ISBN: (纸本)0819454257

Processing astronomical images is an inherently resource intensive procedure that is typically time consuming as well. At the same time, first order reductions are particularly important during the observing process since they can provide key quality assessment information. To resolve this conflict, the Online Data Processing (OLDP) system being commissioned at the Gemini Observatory automatically maps reduction sequences onto a cluster of servers during observing, taking advantage of available concurrency where possible. The user constructs a visual representation of the sequence for an observation using the Gemini Observing Tool. No constraints are placed upon the series of steps that comprise the sequence. At runtime, the OLDP reads the reduction sequence from the Observing Database and splits it into smaller pieces for simultaneous execution on the cluster. Recipe steps can be implemented in IRAF, shell scripts, or Java, and other types can be plugged into the architecture without modifying the core of the code base. This paper will introduce the Gemini OLDP and demonstrate how it utilizes modern infrastructure technology like Jini and javaspaces to achieve its goals.

关键词： pipeline data processing Java Jini javaspaces

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Collaborative visualization for military planning

Collaborative visualization for military planning

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ITCOM Conference on Java/Jini Technologies

作者： Jacobs, T Butler, S USAF Inst Technol Washington DC USA

ISBN: (纸本)0819442453

So that a military commander has precise command, control, and planning information available for a given mission, information must be tailored for a particular area of operation, for a specific level of command, and for a specific time period. The commander must be able to quickly understand the information, query related information, and analyze the information in collaboration with others to plan and control a military operation. To provide such tailored information, we envision an environment in which customized agents traverse a diverse, distributed, frequently changing information space to identify relevant data. Once aware of the data, visual interfaces facilitate understanding and navigation. Geographically separated users manipulate a customized view to access a common information framework in which they can interactively collaborate with other users. We propose an architecture for achieving this vision that is well suited to implementation with Jini networking technologies. As a first step toward achieving this architecture we have developed a collaborative visualization framework that enables multiple distributed users to interact using shared visual interface components while simultaneously communicating via a text-based chat window. Our framework provides communications management and messaging support and well-defined Java class interfaces for integrating visualization components. Initial results indicate significant benefits for application development through reuse and extensibility. We achieved interactive performance and synchronized collaboration using javaspaces as the underlying distributed technology.

关键词： information visualization collaborative computing javaspaces

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GLOBE: A highly available and scalable tuplespace

GLOBE: A highly available and scalable tuplespace

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Conference on Java/Jini Technologies and High-Performance Pervasive Computing

作者： Larsen, JE Spring, JH Tech Univ Denmark Ctr Tele Informat DK-2800 Lyngby Denmark

ISBN: (纸本)0819446424

The Linda tuplespace paradigm is increasingly being used in the design of large-scale Internet-based systems. However, centralized tuplespace implementations suffer from both availability and scalability limitations. GLOBE is a distributed and replicated tuplespace that combines high availability and scalability in such heterogeneous and loosely coupled systems. The level of availability and scalability of a GLOBE tuplespace can dynamically and independently be adjusted by modifying the number of replicas and partitions in the system. A tuplespace semantics is defined specifically tailored for large-scale, loosely coupled networks. The GLOBE replica update protocols are based on a combination of active operation propagation and anti-entropy propagation in the case of failures. A prototype of GLOBE has been implemented by extending a centralized javaspaces implementation. Evaluations of the prototype implementation indicate that a distributed and replicated GLOBE tuplespace can outperform a highly loaded centralized tuplespace.

关键词： Tuplespace replication distribution high availability scalability tuplespace semantics javaspaces Jini

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Jini技术在分布式计算中的应用

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计算机工程 2003年第9期29卷 24-26页

作者：姜志潘和平张彤武汉大学遥感信息工程学院数字智能研究组武汉430074

对Jini的体系结构进行介绍，并就建立在Jini之上的javaspaces模型及其在分布式计算中的作用进行分析，最后阐明了Jini技术在实现神经网络分布式计算中应用。

关键词：分布式计算 Jini javaspaces 神经网络

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Holmes: a system to support software product lines 00

Holmes: a system to support software product lines

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Proceedings of the 22nd international conference on Software engineering

作者： Giancarlo Succi Jason Yip Eric Liu Witold Pedrycz Department of Electrical and Computer Eng. The University of Alberta 238 Civil / Electrical Bldg. Edmonton AB Canada T6G 2G7 Department of Electrical and Computer Eng. University of Calgary 2500 Univ. Dr. NW Calgary AB Canada T2N 1N4

No abstract available.

ISBN: (纸本)9781581132069

No abstract available.

关键词： javaspaces

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Posit spaces: a performative model of e-commerce 03

Posit spaces: a performative model of e-commerce

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Proceedings of the second international joint conference on Autonomous agents and multiagent systems

作者： Peter McBurney Simon Parsons University of Liverpool Liverpool UK Brooklyn College City University of New York Brooklyn NY

ISBN: (纸本)9781581136838

What distinguishes e-commerce from ordinary commerce? What distinguishes it from distributed computation? In this paper we propose a performative theory of e-commerce, drawing on speech act theory, in which e-commerce exchanges are promises of future commercial actions, whose real-world meanings are constructed jointly and incrementally. We then define a computational model for this theory, called Posit Spaces, along with the syntax and semantics for an agent interaction protocol, the Posit Spaces Protocol or PSP. This protocol enables participants in a multi-agent commercial interaction to propose, accept, modify and revoke joint commitments. Our work integrates three strands of prior research: the theory of Tuple Spaces in distributed computation; formal dialogue games from argumentation theory; and the study of commitments in multi-agent systems.

关键词： agent communications languages performatives tuple spaces javaspaces negotiation commitments e-commerce speech acts

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Distributed scientific computing in Java: observations and recommendations 03

Distributed scientific computing in Java: observations and r...

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Proceedings of the 2nd international conference on Principles and practice of programming in Java

作者： Humphrey Sheil University College Dublin Belfield Dublin Ireland

ISBN: (纸本)9780954414511

The search for techniques to process growing mountains of data efficiently continues apace, nowhere more so than in the field of bioinformatics. Distributed processing represents a practical solution to the search for more powerful architectures that can harness the power of multiple machines to solve a given *** this approach brings with it associated problems - selecting the most appropriate language to use in developing the software, development platform and system *** paper addresses some of these issues and also details observations gathered during the design and construction of one such distributed system [1] built using Java to solve a well-known bioinformatics problem [2] in a parallel processing environment using artificial neural networks. This paper does not provide a detailed discussion of the problem itself or results obtained, however the inquisitive reader will find further details in [1].

关键词： bioinformatics javaspaces distributed computing parallel programming artificial neural networks jini Java

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