GKS Programming in a PHIGS Environment

GKS is an international standard for the functional interface to 2D graphics, whilst PHIGS is currently an ISO work item for 2D and 3D graphics. In addition, PHIGS allows improved control over structuring graphics data in the system. With a new work item, the upwards compatability from GKS to PHIGS is being called into question. This paper is an attempt to give direction to these discussions by listing the implications of introducing a software layer between a GKS application program and a PHIGS environment on which this application is to be run. It is intended to highlight differences between the systems and to answer questions such as, “How compatible?”, “Is it possible?”, “How much does the software layer have to do?”, etc.     

A Parallel Programming Environment

Automated techniques will not entirely free the programmer from thinking about parallelism but will uncover natural parallelism in loops and generate appropriate synchronization primitives to exploit that parallelism     

A Development Environment for Constructing Graph-Based Editing Tools

Scientists and engineers use numerous kinds of graph notations to model various objects in the real world and their relationships in an abstract pictorial form. However, developing a specific graph editing tool for each of these notations is often very costly in terms of time and resources. This paper outlines a design of a suitable development environment for constructing graph-based editing tools, based on the requirements analysis of such an environment derived from a survey of more than 60 different graph notations.     

“自动化工作室”——不仅仅是一款编程工具

“Automation Studio的开发是以支持机械制造商将一个概念变为现实的目标为导向的,覆盖了机器生命周期中的各个阶段。”     

A Methodology for the Design of Ada Transformation Tools in a DIANA Environment

Implementing and testing transformations incrementally makes DIANA-based Ada software tools easier to debug and more efficient.     

The Computer-aided Programming System?A Friendly Programming Environment

A conventional system puts the programmer through a time-consuming cycle of manual referencing, code correction, and program re-execution. This system provides a window-based on-line help facility to ease and speed the programming process.     

Design and Programming Tools for Time Critical Applications

The development of time critical applications needs specific tools able to cope with both functional and non-functional requirements. In this paper we describe a design and programming environment to assist the development of hard real-time applications. An interactive graphic interface is provided to facilitate the design of the application according to three hierarchical levels. The development model we propose is based on an iterative process in which the real-time scheduling support is considered from the beginning of the design phases.Our graphic environment integrates several tools to analyze, test, and simulate the real-time application under development. In particular, the tools we have implemented are: a Design Tool, to describe the structure of the application, a Schedulability Analyser Tool (SAT), to verify off-line the feasibility of the schedule of a critical task set, a Scheduling Simulator, to test the average behavior of the application, and a Maximum Execution Time (MET) estimator to bound the worst case duration of each task.     

P-GRADE: A Grid Programming Environment

P-GRADE provides a high-level graphical environment to develop parallel applications transparently both for parallel systems and the Grid. P-GRADE supports the interactive execution of parallel programs as well as the creation of a Condor, Condor-G or Globus job to execute parallel programs in the Grid. In P-GRADE, the user can generate either PVM or MPI code according to the underlying Grid where the parallel application should be executed. PVM applications generated by P-GRADE can migrate between different Grid sites and as a result P-GRADE guarantees reliable, fault-tolerant parallel program execution in the Grid. The GRM/PROVE performance monitoring and visualisation toolset has been extended towards the Grid and connected to a general Grid monitor (Mercury) developed in the EU GridLab project. Using the Mercury/GRM/PROVE Grid application monitoring infrastructure any parallel application launched by P-GRADE can be remotely monitored and analysed at run time even if the application migrates among Grid sites. P-GRADE supports workflow definition and co-ordinated multi-job execution for the Grid. Such workflow management can provide parallel execution at both inter-job and intra-job level. Automatic checkpoint mechanism for parallel programs supports the migration of parallel jobs inside the workflow providing a fault-tolerant workflow execution mechanism. The paper describes all of these features of P-GRADE and their implementation concepts.     

MulticoreBSP for C: A High-Performance Library for Shared-Memory Parallel Programming

The bulk synchronous parallel (BSP) model, as well as parallel programming interfaces based on BSP, classically target distributed-memory parallel architectures. In earlier work, Yzelman and Bisseling designed a MulticoreBSP for Java library specifically for shared-memory architectures. In the present article, we further investigate this concept and introduce the new high-performance MulticoreBSP for C library. Among other features, this library supports nested BSP runs. We show that existing BSP software performs well regardless whether it runs on distributed-memory or shared-memory architectures, and show that applications in MulticoreBSP can attain high-performance results. The paper details implementing the Fast Fourier Transform and the sparse matrix–vector multiplication in BSP, both of which outperform state-of-the-art implementations written in other shared-memory parallel programming interfaces. We furthermore study the applicability of BSP when working on highly non-uniform memory access architectures.     

Functional Programming Library for C++

Programming and Computer Software - Modern functional programming languages, such as Haskell, Scala, ML, and F#, have properties that make it possible to implement logically complicated algorithms...     

PIE: A Programming and Instrumentation Environment for Parallel Processing

The issues of performance-efficient programs and system support for parallel programming are the focus of this project to integrate functionality with performance concerns.     

The Priority Tree, a HL/HSR Approach for PHIGS

The Programmer's Hierarchical Interactive Grahics System (PHIGS) specifies an interface for programming device-independent computer graphics applications. PHIGS provides a powerful data grouping mechanism, called the PHIGS structure, that may be used to model the geometry of 3D objects. Hidden Line/Hidden Surface Removal (HL/HSR) is a required process to produce realistic solid views of the modeled objects. Modeling clip is an essential process for viewing a clipped portion of the modeled objects. A technique is presented that provides HL/HSR and modeling clip as added utilities to PHIGS. The technique is based on the Binary Space Partitioning (BSP) tree (sometimes called priority tree), and involves a back to front sorting of the primitives of a PHIGS structure network to another PHIGS structure. Modeling clip is achieved by limiting the sorting to those primitives in a specified clip ping region of the object space. The resulting structure when displayed on a raster device produces a realistic view of the possibly clipped object that was originally modeled by the PHIGS structure network.     

在分组交换环境下建立一个多媒体会议系统的研究

本文讨论了在分组交换环境下建立一个桌面多媒体会议系统的可能性,研究了多媒体会议系统的特点、组成、工作方式及实现,并指出了分组交换在支持多媒体传输方面应解决的几个关键问题。     

Working in the Garden Environment for Conceptual Programming

Program designers use a variety of techniques when creating their systems. This automated design system conforms to the programmer.     

Integrating Access-Oriented Programming into a Multiparadigm Environment

The Loops knowledge programming system integrates function-oriented, system object-oriented, rule-oriented, and—something notfound in most other systems—access-oriented programming.     

AutoCAD新增的开发工具Visual LISP

本文介绍了ＡｕｔｏＣＡＤ新增的开发工具Ｖｉｓｕａｌ ＬＩＳＰ在开发环境、文件管理、面向对象编程以及监控能力等方面的功能特点。