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Articles 1 - 8 of 8
Full-Text Articles in Physical Sciences and Mathematics
Towards A Java Environment For Spmd Programming, Bryan Carpenter, Guansong Zhang, Geoffrey C. Fox, Xiaoming Li
Towards A Java Environment For Spmd Programming, Bryan Carpenter, Guansong Zhang, Geoffrey C. Fox, Xiaoming Li
Northeast Parallel Architecture Center
As a relatively straightforward object-oriented language, Java is a plausible basis for a scientific parallel programming language. We outline a conservative set of language extensions to support this kind of programming. The programming style advocated is Single Program Multiple Data (SPMD), with parallel arrays added as language primitives. Communications involving distributed arrays are handled through a standard library of collective operations. Because the underlying programming model is SPMD programming, direct calls to other communication packages are also possible from this language.
A High Level Spmd Programming Model: Hpspmd And Its Java Language Binding, Guansong Zhang, Bryan Carpenter, Geoffrey C. Fox, Xinying Li
A High Level Spmd Programming Model: Hpspmd And Its Java Language Binding, Guansong Zhang, Bryan Carpenter, Geoffrey C. Fox, Xinying Li
Northeast Parallel Architecture Center
This report introduces a new language, HPJava, for parallel programming on message passing systems. The language provides a high level SPMD programming model. Through examples and performance results, the features of the new programming style, and its implementation, are illustrated.
Java/Corba Based Real-Time Infrastructure To Integrate Event-Driven Simulations, Collaboration And Distributed Object/Componentware Computing, Geoffrey C. Fox, Wojtek Furmanski, Hasan T. Ozdemir
Java/Corba Based Real-Time Infrastructure To Integrate Event-Driven Simulations, Collaboration And Distributed Object/Componentware Computing, Geoffrey C. Fox, Wojtek Furmanski, Hasan T. Ozdemir
Northeast Parallel Architecture Center
We are discussing the four major standard candidates for distributed object/componentware computing: Java, CORBA, COM and WOM within our proposed coordination framework we call Pragmatic Object Web (POW). We describe our integration approach based on multi-protocol middleware server JWORB (Java Web Object Request Broker) that currently integrates HTTP and IIOP and which we now further develop to also support COM and WOM core functionalities. We are also experimenting with visual data ow authoring front-ends using NPAC WebFlow system on top of JWORB based software bus. Finally, we illustrate our technologies in one major application domain- DoD Modeling and Simulation- where …
Darp: Java-Based Data Analysis And Rapid Prototyping Environment For Distributed High Performance Computations, Erol Akarsu, Geoffrey C. Fox, Tomasz Haupt
Darp: Java-Based Data Analysis And Rapid Prototyping Environment For Distributed High Performance Computations, Erol Akarsu, Geoffrey C. Fox, Tomasz Haupt
Northeast Parallel Architecture Center
The integration of a compiled and interpreted HPF gives us an opportunity to design a powerful application development environment targeted for high performance parallel and distributed systems. This Web based system follows a three-tier model. The Java front-end holds proxy objects which can be manipulated with an interpreted Web client (a Java applet) interacting dynamically with compiled code through a tier-2 server. Although targeted for HPF back-end, the system’s architecture is independent of the back-end language, and can be extended to support other high performance languages.
Secure Delegation For Distributed Object Environments, Nataraj Nagaratnam, Doug Lea
Secure Delegation For Distributed Object Environments, Nataraj Nagaratnam, Doug Lea
Electrical Engineering and Computer Science - All Scholarship
SDM is a Secure Delegation Model for Java-based distributed object environments. SDM extends current Java security features to support secure remote method invocations that may involve chains of delegated calls across distributed objects. The framework supports a control API for application developers to specify mechanisms and security policies surrounding simple or cascaded delegation. Delegation may also be disabled and optionally revoked. These policies may be controlled explicitly in application code, or implicitly via administrative tools.
Java Grande Forum Report: Making Java Work For High-End Computing, George K. Thiruvathukal
Java Grande Forum Report: Making Java Work For High-End Computing, George K. Thiruvathukal
Computer Science: Faculty Publications and Other Works
This document describes the Java Grande Forum and includes its initial deliverables.Theseare reports that convey a succinct set of recommendations from this forum to SunMicrosystems and other purveyors of Java™ technology that will enable GrandeApplications to be developed with the Java programming language.
An Integrated Web-Based Ill System For Singapore Libraries, Schubert Foo, Ee Peng Lim
An Integrated Web-Based Ill System For Singapore Libraries, Schubert Foo, Ee Peng Lim
Research Collection School Of Computing and Information Systems
The paper proposes an integrated Web-based inter-library loan (ILL) system to replace and enhance the existing manual-based ILL system used by Singapore libraries. It describes the system requirements that must be supported in order to make it a viable and acceptable solution to all participating libraries. Subsequently, it presents the client-server Web-based system architecture, database design and Java development platform that are used to implement the system. The new system exhibits a host of advantages over the manual system including the minimising of human resource by eliminating form-filling and other forms of paper work completely, improving the access and speed …
Performing Cooperative Work And Conferencing On An Intranet Using Java, Thaveeporn Limpanyalers
Performing Cooperative Work And Conferencing On An Intranet Using Java, Thaveeporn Limpanyalers
Theses: Doctorates and Masters
The process of organising, preparing and conducting a meeting is a time consuming one. Additionally, geographic separation compounds the amount of effort required. Within this study, an electronic conferencing system in an Intranet environment is designed and implemented, thus enabling employees in the same organisation to meet up electronically without the dual constraints of time and space. Specifically, the study investigates incorporation of facial expressions and an ongoing polling system. The results demonstrate that a presence of facial expressions helps users to better engage in on-line discussion and that users find an ongoing poll to be useful in determining direction …