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并行开发环境    
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  parallel development environment
    Based on SUN5500's parallel development environment, this paper provides implementing methods for message passing model and implied parallel model. An actual MPI application programme is analysed and the computing-time while selecting different models and different parameters is compared. The results show that both models can improve computing speed greatly on SUN5500,but MPI model is better in flexibility and parallel programming.
    基于SUN5500小型计算机并行开发环境,给出了消息传递模型和蕴式并行模型的实现方法,通过实例分析了SUN MPI实际编程,并对选取不同模型及不同参数时的运算时间进行了比较,结果表明,在SUN5500计算机上MPI模型和蕴式并行模型均能较大地提高运算速度,而且MPI在灵活性和并行程度方面更优.
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  parallel development environment
    Based on SUN5500's parallel development environment, this paper provides implementing methods for message passing model and implied parallel model. An actual MPI application programme is analysed and the computing-time while selecting different models and different parameters is compared. The results show that both models can improve computing speed greatly on SUN5500,but MPI model is better in flexibility and parallel programming.
    基于SUN5500小型计算机并行开发环境,给出了消息传递模型和蕴式并行模型的实现方法,通过实例分析了SUN MPI实际编程,并对选取不同模型及不同参数时的运算时间进行了比较,结果表明,在SUN5500计算机上MPI模型和蕴式并行模型均能较大地提高运算速度,而且MPI在灵活性和并行程度方面更优.
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Parallel analysis is a very important technique in parallel compiler. A good parallel analysis algorithm will make a parallel compiler success. By the development of computer cluster and its parallel program exploitation environment, many parallel computer systems support multi level parallel loop execution. Moreover, those parallel programming systems that only support one level parallel loop may face the fact of selecting a perfect parallel loop to enhance the efficiency of the loop. After analyzing the...

Parallel analysis is a very important technique in parallel compiler. A good parallel analysis algorithm will make a parallel compiler success. By the development of computer cluster and its parallel program exploitation environment, many parallel computer systems support multi level parallel loop execution. Moreover, those parallel programming systems that only support one level parallel loop may face the fact of selecting a perfect parallel loop to enhance the efficiency of the loop. After analyzing the serial loops, the parallel analysis pass may tell code generation pass which loop is parallel and which loop is serial. Marking all paralleling loops can reduce the spending of code generation. Therefor, this paper proposes a practical parallel analysis scheme. It not only can generate multiple parallel loops, but also can process many loops of practical programs. It improves traditional parallel analysis algorithm and gives an efficient parallel analysis algorithm. It will not end the processing of analyzing loops after find a parallel loop, and can find all parallel loops in all levels of a nested loop. This scheme has implemented in a parallelizing compiler system with C language.

并行分析在并行编译系统中有着很重要的作用,它的优劣直接影响到编译系统的成败.随着机群系统及其并行开发环境的发展,多数的并行系统可支持多重并行循环的运行.而对只支持一重并行循环的编程系统,选择并行运行效率最高的循环,也是很重要的.为此,本文提出了一个有效的循环并行分析方案.它不但能给出多层循环的并行性,而且能够处理绝大部分实际应用中的并行性问题.本文对传统的并行分析算法进行了修改,并给出了一个有效的并行分析算法.该方案已在一个并行C编译中实现.

A concurrent engineering environment for developing near net shape casting has been constructed for complicated casting and moulding tools design castability evaluation;casting process simulation and rapid prototype fabrication etc.This concurrent engineering environment has been practically used for developing a number of complicated castings.The application results show that this system is a very powerful tool for optimizing the complicated castings design,improving their quality,shortening lead time,and reducing...

A concurrent engineering environment for developing near net shape casting has been constructed for complicated casting and moulding tools design castability evaluation;casting process simulation and rapid prototype fabrication etc.This concurrent engineering environment has been practically used for developing a number of complicated castings.The application results show that this system is a very powerful tool for optimizing the complicated castings design,improving their quality,shortening lead time,and reducing cost.

针对近净形铸件开发中存在的问题,建立了适于对复杂结构铸件及其工装设计、铸件的可铸造性评价、铸件成形过程仿真和制作快速样件等的并行开发环境。并将其应用于铸件的实际开发中,应用结果表明,在所建立的并行环境中开发新产品,可以优化复杂铸件设计、改善质量、缩短研制周期及降低成本

Parallel computation is always a main focus in scientific application domain,and the high performance and easy developing parallel environment is the fundamental for prototyping parallel applications.In this paper,a hierarchical object oriented parallel application framework is proposed.It is an innovative parallel class library for structured grid applications,and allows for parallel software development in the preferred serial environment and such software to run invariably and efficiently on parallel architectures....

Parallel computation is always a main focus in scientific application domain,and the high performance and easy developing parallel environment is the fundamental for prototyping parallel applications.In this paper,a hierarchical object oriented parallel application framework is proposed.It is an innovative parallel class library for structured grid applications,and allows for parallel software development in the preferred serial environment and such software to run invariably and efficiently on parallel architectures.

本文讨论了一个层次式并行应用软件开发框架的设计思想 ,将并行计算底层细节进行逐级抽象 ,采用面向对象封装与继承机制 ,为科学计算领域提供了快速原型实验和应用开发环境 .该框架的层次结构使之成为独立于体系结构的并行开发环境 ,它的高层抽象界面允许以顺序方式书写的代码不经任何改变即可在不同体系结构的并行环境上运行

 
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