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检索条件"任意字段=International Workshop on High-Level Parallel Programming Models and Supportive Environments"

共 126 条记录，以下是41-50 订阅

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DCA: A distributed CCA framework based on MPI

DCA: A distributed CCA framework based on MPI

引用

9th international workshop on high-level parallel programming models and supportive environments

作者： Bertrand, F Bramley, R Indiana Univ Bloomington IN 47405 USA

ISBN: (纸本)0769521517

The CCA is a component architecture for high-performance scientific applications. In this architecture components are parallel entities that are connected directly or in a distributed manner. The problem of communication between scientific parallel programs with differing numbers of processes is called the "MxN problem". This paper discusses problems and solutions regarding the MxN problem in the context of the CCA. We also present a prototype implementation of a distributed CCA framework with MxN capabilities. This implementation reuses many MPI concepts and constructions to build the parallel-remote port invocation mechanism. Leveraging MPI helps developers that are familiar with that communication library and benefits from its performance and high degree of scalability.

关键词： parallel processing systems

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On the implementation of JavaSymphony 8

On the implementation of JavaSymphony

引用

8th international workshop on high-level parallel programming models and supportive environments

作者： Jugravu, A Fahringer, T Univ Vienna Inst Software Sci A-1090 Vienna Austria

ISBN: (纸本)076951880X

In previous work we have introduced JavaSymphony, a system whose purpose is to simplify the development of distributed and parallel Java applications. JavaSymphony is a Java library that allows to control parallelism, load balancing, and locality at a high level. Objects can be explicitly distributed and migrated within virtual architectures, which impose a virtual hierarchy on a distributed system of physical computing nodes. In this paper we present the design of the JavaSymphony Runtime System and the JavaSymphony Shell. Moreover we discuss details about an agent-based implementation of the JavaSymphony Runtime System which comprises the Network Agent, Object Agent, and Event Agent. We present a detailed comparison of the functionality provided by JavaSymphony with several related systems.

关键词： Computer architecture Degradation Distributed computing Dynamic programming Java Libraries Load management parallel processing parallel programming programming profession

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Implementing automatic coordination on networks of workstations 3

Implementing automatic coordination on networks of workstati...

引用

3rd international workshop on high-level parallel programming models and supportive environments at the IPPS/SPDP 1998

作者： Weiss, C Knopp, J Hellwagner, H TU Munchen Inst Informat Munich Germany

ISBN: (纸本)0818684127

Distributed shared objects are a well known approach to achieve independence of the memory model for parallel programming. The illusion of shared (global) objects is a convenient abstraction which leads to ease of programming on both X-inds of parallel architectures, shared memory and distributed memory machines. In this paper, we present several different implementation variants for distributed shared objects on distributed platforms. We have considered these variants while implementing a high level parallel programming model known as coordinators [10] These are global objects coordinating accesses to the encapsulated data according to statically defined access patterns. Coordinators have been implemented on both shared memory multiprocessors and networks of workstations (NOWs). In this paper we describe their implementation as distributed shared objects and give basic performance results on a NOW.

关键词： parallel architectures

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Modeling master-worker applications in POETRIES

Modeling master-worker applications in POETRIES

引用

9th international workshop on high-level parallel programming models and supportive environments

作者： Cesar, E Mesa, JG Sorribes, J Luque, E Univ Autonoma Barcelona Dept Comp Sci Bellaterra 08193 Spain

ISBN: (纸本)0769521517

parallel/Distributed application development is a very difficult task for non-expert programmers, and therefore support tools are needed for all phases of this kind Of application development cycle. This means that developing applications using predefined programming structures (frameworks) should be easier than doing it from scratch. We propose to take advantage of the knowledge about the structure of the application in order to develop a dynamic and automatic tuning tool. In this sense, we have designed POETRIES, which is a dynamic performance tuning tool based on the idea that a performance model could be associated to the high-level structure of the application. This way, the tool could efficiently make better tuning decisions. Specifically, we focus this work on the definition of the performance model associated to applications developed with the Master-Worker framework.

关键词： parallel processing systems

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Algorithmic concept recognition support for skeleton based parallel programming 8

Algorithmic concept recognition support for skeleton based p...

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8th international workshop on high-level parallel programming models and supportive environments

作者： Di Martino, B Bonifacio, A Univ Naples 2 Fac Ingn Dipartimento Ingn Informaz Naples Italy

ISBN: (纸本)076951880X

parallel Skeletons have been proposed as a possible programming model for parallel architectures. One of the problems with this approach is the choice of the skeleton which is best suited to the characteristics of the algorithm program to be developed/parallelized, and of the target architecture, in terms of performance of the parallel implementation. Another problem arising with parallelization of legacy codes is the attempt to minimize the effort needed for program comprehension, and thus to achieve the minimum restructuring of the sequential code when producing the parallel version. In this paper we propose automated Program Comprehension at the algorithmic level as a driving feature in the task of selection of the proper parallel Skeleton, best suited to the characteristics of the algorithm/program and of the target architecture. Algorithmic concept recognition can automate or support the generation of parallel code through instantiation of the selected parallel Skeleton(s) with template based transformations of recognized code segments.

关键词： Character generation Concrete Concurrent computing Conferences Government ISDN parallel architectures parallel programming Personal communication networks Skeleton

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high-level cellular programming model for massively parallel processing

High-level cellular programming model for massively parallel...

引用

Proceedings of 1997 2nd international workshop on high-level programming models and supportive environments

作者： Spezzano, Giandomenico Talia, Domenico Universita della Calabria Rende Italy

Cellular automata are used for designing high-performance applications in many areas. This paper describes CARPET, a high-level programming language based on the cellular automata model. CARPET is a programming language designed to support the development of parallel high performance software. It exploits the computing power of a highly parallel computer releasing a user from using explicit parallel constructs. A CARPET implementation has been used for programming cellular algorithms in the CAMEL parallel environment. By CARPET a user might write programs to describe the actions of thousands of simple active agents interacting locally, then the CAMEL environment allows a user to observe the global complex evolution that arises from their parallel execution and their local interactions.

关键词： high level languages

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SCL-Chan: An asynchronous data-parallel language for irregular algorithms

SCL-Chan: An asynchronous data-parallel language for irregul...

引用

2nd international workshop on high-level parallel programming models and supportive environments / 11th international parallel Processing Symposium

作者： Melin, E Raffin, B Rebeuf, X Virot, B LIFO - IIIA Universite d'Orleans Orleans France

ISBN: (纸本)0818678836

parallelism suffers from a lack of programming languages both simple to handle and able to take advantage of the power of present parallel computers. If parallelism expression is too high level, compilers have to perform complex optimizations leading often to poor performances. One the other hand, too low level parallelism transfers difficulties reward the programmer. In this paper, we propose a new programming language that integrates both a synchronous data-parallel progamming model and an asynchronous execution model. The synchronous data-parallel programming model allows a safe program designing. The asynchronous execution model yields an efficient execution on present MIMD architectures without any program transformation. Our language relies on a logical instruction ordering exploited by specific send/receive communications. It allows to express only the effective data dependences between processors. This ability is enforced by a possible send/receive unmatching useful for irregular algorithms. A sparse vector computation exemplifies our language potentialities.

关键词： design of parallel programming languages synchronous and data-parallel programming model asynchronous execution model structural clock irregular algorithm

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Supporting high level programming with high performance: The Illinois Concert system

Supporting high level programming with high performance: The...

引用

2nd international workshop on high-level parallel programming models and supportive environments / 11th international parallel Processing Symposium

作者： Chien, A Dolby, J Ganguly, B Karamcheti, V Zhang, XB Univ of Illinois Urbana United States

ISBN: (纸本)0818678836

Programmers of concurrent applications are faced with a complex performance space in which data distribution and concurrency management exacerbate the difficulty of building large, complex applications. To address these challenges, the Illinois Concert system provides a global namespace, implicit concurrency control and granularity management, implicit storage management, and object-oriented programming features. These features are embodied in a language ICC++ (derived from C++) which has been used to build a number of kernels and applications. As high level features can potentially incur overhead, the Concert system employs a range of compiler and runtime optimization techniques to efficiently support the high level programming model. The compiler techniques include type inference, inlining and specialization;and the runtime techniques include caching, prefetching and hybrid stack/heap multithreading. The effectiveness of these techniques permits the construction of complex parallel applications that are flexible, enabling convenient application modification or tuning. We present performance results for a number of application programs which attain good speedups and absolute performance.

关键词： concurrent languages concurrent object-oriented programming compiler optimization runtime systems object-oriented optimization

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DPS - Dynamic parallel Schedules 8

DPS - Dynamic Parallel Schedules

引用

8th international workshop on high-level parallel programming models and supportive environments

作者： Gerlach, S Hersch, RD Ecole Polytech Fed Lausanne Lausanne Switzerland

ISBN: (纸本)076951880X

Dynamic parallel Schedules (DPS) is a high-level framework for developing parallel applications on distributed memory computers (e.g. clusters of PCs). Its model relies on compositional customizable split-compute-merge graphs of operations (directed acyclic flow graphs). The graphs and the mapping of operations to processing nodes are specified dynamically at runtime. DPS applications are pipelined and multithreaded by construction, ensuring a maximal overlap of computations and communications. DPS applications can call parallel services exposed by other DPS applications, enabling the creation of reusable parallel components. The DPS framework relies on a C++ class library. Thanks to its dynamic nature, DPS offers new perspectives for the creation and deployment of parallel applications running on server clusters.

关键词： parallel computation parallel schedules flow graphs split-merge constructs overlapping of computations and communications

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Complexity and performance in parallel programming languages

Complexity and performance in parallel programming languages

引用

Proceedings of 1997 2nd international workshop on high-level programming models and supportive environments

作者： VanderWiel, Steven P. Nathanson, Daphna Lilja, David J. Univ of Minnesota Minneapolis United States

Several parallel programming languages, libraries and environments have been developed to ease the task of writing programs for multiprocessors. Proponents of each approach often point out various language features that are designed to provide the programmer with a simple programming interface. However, virtually no data exists that quantitatively evaluates the relative ease of use of different parallel programming languages. The following paper borrows techniques from the software engineering field to quantify the complexity of three predominate programming models: shared memory, message passing and high-Performance Fortran. It is concluded that traditional software complexity metrics are effective indicators of the relative complexity of parallel programming languages. The impact of complexity on run-time performance is also discussed in the context of message-passing versus HPF on an IBM SP2.

关键词： high level languages

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