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MODELING MULTICOMPUTER SYSTEMS WITH PARET

COMPUTER 1988年第5期21卷 39-48页

作者： NICHOLS, KM EDMARK, JT AT&T Bell Labs. Holmdel NJ

The authors discuss the parallel architecture and evaluation tool (PARET), a software package that provides a multicomputer system laboratory for studying the interaction of algorithms and architectures; the effects of varying physical resources on system performance; and alternate mapping, scheduling, and routing strategies, both static and dynamic. To handle the complexity of the problem and explore performance questions, PARET provides an interactive and animated environment in which the user exercises multicomputer models. The authors examined previous and related work, examine PARET's unified modeling approach and its user interface. They present two PARET models to illustrate the modeling process

关键词： PARET animated environment evaluation tool multicomputer system laboratory parallel architecture parallel architectures performance evaluation physical resources programming environments routing strategies scheduling software package software packages system performance unified modeling approach user interface user interfaces virtual machines

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SOFTWARE METRICS AND INTEGRATED PROJECT SUPPORT environments

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SOFTWARE ENGINEERING JOURNAL 1986年第1期1卷 58-64页

作者： KITCHENHAM, BA MCDERMID, JA INT COMP LTD CTR SOFTWARE ENGN TECHNOLSTOKE ON TRENT SK7 1TLSTAFFSENGLAND SYST DESIGNERS PLC CAMBERLEY GU15 3XDSURREYENGLAND

This paper considers how the information needs of managers may be helped by the development of integrated project support environments (IPSEs). In particular the paper concentrates on the issue of obtaining quantitative information about a software product and its development process using software metrics. The nature and use of software metrics and the problems of metrics data collection are discussed in terms of the authors' experience of an already existing metrics data collection system. The paper then considers the way in which metrics collection and analysis can be incorporated into IPSEs and the requirements that metrics systems place on the design of IPSEs.

关键词： software engineering programming support development process quantitative information Software management programming environments software metrics software product managers integrated project support environments

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Microtask programming

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IEEE TRANSACTIONS ON SOFTWARE ENGINEERING 2019年第11期45卷 1106-1124页

作者： LaToza, Thomas D. Di Lecce, Arturo Ricci, Fabio Ben Towne, W. van der Hoek, Andre George Mason Univ Dept Comp Sci 4400 Univ DrMS 4A5 Fairfax VA 22030 USA Cuebiq Srl Corso Porta Romana 68 I-20122 Milan Italy Bosch Rexroth I-20063 Milan Italy Carnegie Mellon Univ Sch Comp Sci Inst Software Res 5000 Forbes Ave Pittsburgh PA 15213 USA Univ Calif Irvine Dept Informat Donald Bren Sch Informat & Comp Sci 5029 Donald Brett Hall Irvine CA 92697 USA

Traditional forms of Crowdsourcing such as open source software development harness crowd contributions to democratize the creation of software. However, potential contributors must first overcome joining barriers forcing casually committed contributors to spend days or weeks onboarding and thereby reducing participation. To more effectively harness potential contributions from the crowd, we propose a method for programming in which work occurs entirely through microtasks, offering contributors short, self-contained tasks such as implementing part of a function or updating a call site invoking a function to match a change made to the function. In microtask programming, microtasks involve changes to a single artifact, are automatically generated as necessary by the system, and nurture quality through iteration. A study examining the feasibility of microtask programming to create small programs found that developers were able to complete 1008 microtasks, onboard and submit their first microtask in less than 15 minutes, complete all types of microtasks in less than 5 minutes on average, and create 490 lines of code and 149 unit tests. The results demonstrate the potential feasibility as well as revealing a number of important challenges to address to successfully scale microtask programming to larger and more complex programs.

关键词： programming Task analysis Crowdsourcing Electronic mail programming environments Open source software programming environments management

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An end-to-end prototyping framework for compliant wireless LAN transceivers with smart antennas

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COMPUTER COMMUNICATIONS 2008年第8期31卷 1551-1563页

作者： Roy, Sebastien Boudreault, Jean-Francois Dupont, Louis Univ Laval Dept Elect & Comp Engn Radiocommun & Signal Proc Lab Ste Foy PQ G1K 7P4 Canada

OFDM Wireless LANs based on the IEEE802.11 standard are complex systems in themselves. When smart antennas are used in such systems, both the MAC and the PHY layers must be redefined in order to achieve application-specific goals. As a result, the development of such systems can become impressively heavy. A complete development framework is presented here. It makes use of hardware/software co-design in order to implement all required layers to develop a wireless access point. The entire framework is targeted at an FPGA platform, providing full flexibility and processing power for the development of PHY layers. (C) 2008 Elsevier B.V. All rights reserved.

关键词： field programmable gate arrays logic design integrated circuit design signal design communication system software communication systems programming environments software prototyping

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Exploiting persistence in build management

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SOFTWARE-PRACTICE & EXPERIENCE 1997年第4期27卷 447-480页

作者： Sjoberg, DIK Welland, R Atkinson, MP Philbrow, P Waite, C UNIV GLASGOW DEPT COMP SCIGLASGOW G12 8QQLANARKSCOTLAND

A challenging issue in the construction and maintenance of large application systems is how to determine which components need to be rebuilt after change, when and in which order. Rebuilding is typically recompilation and linking, but may also include update of derivable components such as cross-reference databases and re-creation of library indexes. Type definitions or schema, and data values in a file store, database or persistent store may also need to be rebuilt. The main purpose of this paper is to describe how persistent language technology can be exploited to enhance build management. In particular, the paper describes a method for transactional, incremental linking and the implementation of its support. To help implement this method, and to make it safer and more efficient to carry out rebuild activities in general, we have defined a set of automatically checkable constraints on the software. The build management tool we have implemented, the Builder, derives rebuild dependencies automatically and offers partitioning of dependency graphs-a means to defer or avoid unnecessary rebuilding. The Builder is implemented in a persistent programming language and provides build management for applications written in the language. It exploits features such as strong typing, runtime linguistic reflection, and referential integrity provided by the language processing technology. The Builder operates over both programs and (complex) data, which is in contrast to conventional language-centred tools. (C) 1997 by John Wiley & Sons, Ltd.

关键词： build management recompilation incremental linking method support programming environments persistent programming

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ROBOT SKILLS DEVELOPMENT USING A LASER RANGE FINDER

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IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT 1994年第2期43卷 265-271页

作者： ARCHIBALD, C PETRIU, E HARB, A UNIV OTTAWA DEPT ELECT ENGNOTTAWA K1N 6N5ONTARIOCANADA

A wrist-mounted laser range finder is used to develop robot skills. This is an active sensor which projects a spot of laser light that is scanned across a surface measuring the range by triangulation. Interpretation of the data, how the data affect the control loop, and how these steps can be combined to create a required functionality are addressed by a new computational paradigm called SKORP (SKills-Oriented Robot programming). Robot operations are constructed as a sequence of robot skills. The objective is to develop a computational environment where the real-time systems programming is separate from the application-oriented programming. The application programming environment is iconic, and examples of how the robot operation is specified are shown. The systems programmer develops the skills on a multiprocessor architecture. The development of a skill which uses the range finder in the control loop is described. In this skill an edge on a surface is tracked while the pose of the end effector of the robot is held constant with respect to the edge in five degrees of freedom.

关键词： Robot kinematics Robot sensing systems Robot programming programming profession Application software Real time systems programming environments End effectors Control systems Software architecture

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IMPLEMENTATION OF A DECLARATIVE STATE-TRANSITION SYSTEM

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SOFTWARE-PRACTICE & EXPERIENCE 1989年第4期19卷 351-370页

作者： FOSTER, I UNIV LONDON IMPERIAL COLL SCI & TECHNOL DEPT COMPLONDON SW7 2BZENGLAND

A declarative programming style is claimed to have significant advantages from a software engineering point of view. However, these benefits cannot generally be realized when writing programs that are concerned with changing state, such as environments and programming tools. Declarative state-transition (DST) systems have been proposed as a solution to this problem. In DST systems, computation and update are separated. Programs are interpreted as defining functions or relations over states, and update follows successful computation of new states. Support for persistent state and atomic, serializable transactions facilitates the implementation of programming environments and tools. This paper describes an implementation scheme for DST systems. The scheme is illustrated by a presentation of the implementation of PPS, a DST system for parallel logic programming.

关键词： Declarative programming Declarative state-transition systems programming environments

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Samurai Romanesque, J2ME, and the battle for mobile cyberspace

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IEEE COMPUTER GRAPHICS AND APPLICATIONS 2003年第1期23卷 16-23页

作者： Krikke, J

Reviews the cell phone game Samurai Romanesque. Players take a virtual journey through 15th-century Japan, engage other players in real-time battles, visit a thousand historical towns and villages, practice the art of Zen, and even have virtual children. This massive multiplayer role-playing game can accommodate half a million gamers simultaneously. Rendered in color, and resembling the graphics quality of the (8-bit) Game Boy, the game takes the wireless Internet to a new level of complexity and is a sign of things to come, that is, cyberspace on the go. Dwango built Samurai Romanesque on the Java 2 platform, Micro Edition (J2ME), a compact version of Sun Microsystems' Java 2 programming environment. J2ME suits applications such as cell phones, pagers, set-top boxes, and other devices with limited memory and slow processors. NTT DoCoMo's technology uses Sun's reduced K virtual machine, but the company developed its own proprietary version of mobile Java.

关键词： Java Cellular phones Sun Cities and towns Art Rendering (computer graphics) Graphics Internet programming environments Virtual machining

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MASCOT-3 - AN INFORMAL INTRODUCTORY TUTORIAL

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SOFTWARE ENGINEERING JOURNAL 1986年第3期1卷 95-102页

作者： BATE, G G&R SOFTWARE CONSULTANCY WANTAGE OX12 7EGENGLAND

Mascot is a method for the design and implementation of large real-time concurrent systems. The original version was developed during the early 1970s, and the Mascot 2 handbook was published in 1980. It is hoped that the newest version, Mascot 3, will be published in 1987. This paper is intended to give an outline of the main features of the Mascot method and the new concepts introdced by Mascot 3.

关键词： software engineering programming support Operating systems real-time concurrent systems software testing multiprocessing programs programming environments real-time systems Mascot 3

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TRAPPER - A GRAPHICAL programming ENVIRONMENT FOR PARALLEL SYSTEMS

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FUTURE GENERATION COMPUTER SYSTEMS 1995年第4-5期11卷 351-361页

作者： SCHAFERS, L SCHEIDLER, C KRAMERFUHRMANN, O GMD SCHLOSS BIRLINGHOVEN D-53757 ST AUGUSTINGERMANY

We present a graphical programming environment for parallel systems called TRAPPER(TM). TRAPPER supports the development of industrial applications which require high computing power. The programming environment is based on the programming model of communicating sequential processes. TRAPPER contains tools for the design, mapping, visualization and optimization of parallel systems. The Designtool supports a hybrid program development, where the parallel process structure is described using a graphical representation and the sequential behavior is described using textual representations. The configuration of the target hardware and the mapping of the application onto the configured hardware is supported by the Configtool. During run-time, the monitoring system records software events like interprocess communication and measures the computation and communication loads of the underlying hardware. The run-time behavior of the software is animated by the Vistool, the load behavior of the hardware is displayed by the Perftool. The first target systems are transputer-based systems as well as workstation clusters and parallel supercomputers with the standard interfaces PVM, PARMACS or MPI.

关键词： programming environments TRANSPUTER CLUSTER COMPUTING INDUSTRIAL APPLICATIONS MONITORING PERFORMANCE OPTIMIZATION

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