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Systematic strategy for performance prediction in improvement of parallel programs 4th

引用

4th International Workshop on Computer Aided systems Theory, CAST 1994

作者： Blasko, Roman Department of Software Technology and Parallel Systems University of Vienna Liechtensteinstrasse 22 ViennaA-1090 Austria

ISBN: (纸本)3540614788

Second-generation supercompilers should comprise performance analysis tools for creating an information feed-back to improve parallel programs. We have developed a technique and performance analysis tool, PEPSY, embedded in our supercompiler, which is based on automatic generation of the abstract model of the parallel program and performance analysis using a simulation technique. Real application programs might consist of a number of procedures calling one another and creating a complex call structure. We have designed a systematic strategy for analysis of the call structure, which significantly reduces the total time necessary for the performance prediction of the whole program. © Springer-Verlag Berlin Heidelberg 1996.

关键词： Application programs

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Simulation based performance prediction by Pepsy 28

Simulation based performance prediction by Pepsy

引用

28th Annual Simulation Symposium, ANSS 1995

作者： Blasko, Roman Department of Software Technology and Parallel Systems University of Vienna Briinner Str. 72 ViennaA-1210 Austria

ISBN: (纸本)0818670916

parallel programs, generated by the supercompiler, VFCS (Vienna Fortran Compilation System), are an application area for the tool, PEPSY (PErformance Prediction System), which we have developed recently. PEPSY derives a performance model from an internal representation of the parallel program in the compiler, automatically, and makes performance analysis by discrete-event simulation. Several monitoring modes of PEPSY enable to analyze a parallel program behavior at the detailed and global level, evaluating static and dynamic performance indices. Performance prediction is cam'ed out before the final target parallel code is generated, or before a real run is executed on the parallel computer, in order to optimize the parallelization strategy for VFCS. This paper as focused on the prediction of a new subset of performance indices for the parallel programs, evaluated by PEPSY, and illustrating its new monitoring facilities suitable for comparison of different versions of the program. © 1995IEEE

关键词： Discrete event simulation

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A static parameter based performance prediction tool for parallel programs 93

A static parameter based performance prediction tool for par...

引用

7th International Conference on Supercomputing, ICS 1993

作者： Fahringer, Thomas Zima, Hans P. University of Vienna Department of Software Technology and Parallel Systems Brünner Str. 72 ViennaA-1210 Austria

ISBN: (纸本)089791600X

This paper presents a Parameter based Performance Prediction Tool (PPPT) which is part of the Vienna Fortran Compilation System (VFCS), a compiler that automatically translates Fortran programs into message passing programs for massively parallel architectures. The PPPT is applied to an explicitly parallel program generated by the VFCS, which may contain synchronous as well as asynchronous communication and is attributed with parameters computed in a previous profiling run. It statically computes a set of optional parameters that characterize the behavior of the parallel program. This includes work distribution, the number of data transfers, the amount of data transferred, transfer times, network contention, and the number of cache misses. These parameters can be selectively determined for statements, loops, procedures, and the entire program;furthermore, their effect with respect to individual processors can be examined. The tool plays an important role in the VFCS by providing the system as well as the user with vital performance information about the program. In particular, it supports automatic data distribution generation and the intelligent selection of transformation strategies, based on properties of the algorithm and characteristics of the target architecture. The tool has been implemented. Experiments show a strong correlation between the statically computed parameters and actual measurements;furthermore it turns out that the predicted parameter values allow a realistic ranking of different program versions with respect to the actual runtime. © 1993 ACM.

关键词： Parameter estimation

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Language and compiler support for out-of-core irregular applications on distributed-memory multiprocessors

Language and compiler support for out-of-core irregular appl...

引用

4th International Workshop on Languages, Compilers, and Run-Time systems for Scalable Computers, LCR 1998

作者： Brezany, Peter Choudhary, Alok Dang, Minh Institute for Software Technology and Parallel Systems University of Vienna Liechtensteinstrasse 22 A-1090 Vienna Austria ECE Department Northwestern University Evanston United States

ISBN: (纸本)3540651721

Current virtual memory systems provided for scalable computer systems typically offer poor performance for scientiFIc applications when an application's working data set does not fit in main memory. As a result, programmers who wish to solve "out-of-core" problems efficiently typically write a separate version of the parallel program with explicit I/O operations. This task is onerous and extremely dificult if the application includes indirect data references. A promising approach is to develop a language support and a compiler system on top of an advanced runtime system which can automatically transform an appro- priate in-core program to eficiently operate on out-of-core data. This approach is presented in this paper. Our proposals are discussed in the context of HPF and its compilation environment. © Springer-Verlag Berlin Heidelberg 1998.

关键词： Program compilers

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Program comprehension support for knowledge-based parallelization 4

Program comprehension support for knowledge-based paralleliz...

引用

4th Euromicro Workshop on parallel and Distributed Processing, PDP 1996

作者： Andel, S. Di Martino, B. Hulman, J. Zima, H.P. Institute for Software Technology and Parallel Systems University of Vienna Liechtensteinstr. 22 ViennaA-1090 Austria Department of Computer Science and Systems University federico II via Claudio 21 Naples80124 Italy

ISBN: (纸本)0818673761

Current compilation systems for distributed memory computers have to integrate new techniques to support the highly complex task of producing efficient programs for parallel systems. Two techniques, program comprehension and expert systems, although developed outside the scope of parallelization domain, are extremely useful to improve the quality of the parallel code generated and to make the parallelization process more convenient and automatic. We describe a parallelization environment consisting of three main components: Vienna Fortran Compilation System (VFCS), a tool for recognition of parallelizable Algorithmic Patterns (PAP Recognizer), and a knowledge based parallelization support tool (Expert Adviser). After these main components are introduced, the paper focuses on integration issues of PAP Recognizer and Expert Adviser within the framework of VFCS. We outline the salient features of a new parallelization environment. The design of the XPA knowledge base for recognized program concepts (patterns) as presented, and the methodology of knowledge acquisition for program patterns is outlined. © 1996 IEEE.

关键词： Expert systems

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High performance fortran without templates: An alternative model for distribution and alignment 93

High performance fortran without templates: An alternative m...

引用

4th ACM SIGPLAN Symposium on Principles and Practice of parallel Programming, PPOPP 1993

作者： Chapman, Barbara M. Mehrotra, Piyush Zima, Hans P. Department for Software Technology and Parallel Systems University of Vienna Austria ICASE MS 132C NASA Langley Research Center HamptonVA23681 United States

ISBN: (纸本)0897915895

Language extensions of Fortran are being developed which permit the user to map data structures to the individual processors of distributed memory machines. These languages allow a programming style in which global data references are used. Current efforts are fo-cussed on designing a common basis for such languages, the result of which is known as High Performance For-tran (HPF). One of the central debates in the HPF effort revolves around the concept of templates, introduced as an abstract index space to which data could be aligned. In this paper, we present a model for the mapping of data which provides the functionality of High Performance Fortran distributions without the use of templates. © 1993 ACM.

关键词： FORTRAN (programming language)

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A software architecture for massively parallel input-output 3rd

引用

3rd International Workshop on Applied parallel Computing in Industrial Problems and Optimization, PARA 1996

作者： Brezany, Peter Mueck, Thomas A. Schikuta, Erich University of Vienna Institute for Software Technology and Parallel Systems Liechtensteinstr. 22 ViennaA-1092 Austria Department of Data Engineering Rathansstrasse 19/4 ViennaA-1010 Austria

ISBN: (纸本)3540620958

For an increasing number of data intensive scientific applications, parallel I/O concepts are a major performance issue. Tackling this issue, we provide an outline of an input/output system designed for highly efficient, scalable and conveniently usable parallel I/O on distributed memory systems. The main focus of this paper is the parallel I/O runtime system support provided for software-generated programs produced by parallelizing compilers in the context of High Performance FORTRAN efforts. Specifically, our design is presented in the context of the Vienna Fortran Compilation System. © Springer-Verlag Berlin Heidelberg 1996.

关键词： Program compilers

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Simulation based performance prediction by PEPSY

Simulation based performance prediction by PEPSY

引用

Annual Symposium on Simulation

作者： R. Blasko Department of Software Technology and Parallel Systems University of Technology Vienna Vienna Austria

parallel programs, generated by the supercompiler, VFCS (Vienna Fortran Compilation System), are an application area for the tool, PEPSY (PErformance Prediction SYstem), which we have developed recently. PEPSY derives a performance model from an internal representation of the parallel program in the compiler, automatically, and makes performance analysis by discrete-event simulation. Several monitoring modes of PEPSY enable to analyze a parallel program behavior at the detailed and global level, evaluating static and dynamic performance indices. Performance prediction is carried out before the final target parallel code is generated, or before a real run is executed on the parallel computer, in order to optimize the parallelization strategy for VPCS. This paper is focused on the prediction of a new subset of performance indices for the parallel programs, evaluated by PEPSY, and illustrating its new monitoring facilities suitable for comparison of different versions of the program.< >

关键词： Predictive models Performance analysis Computerized monitoring Concurrent computing Distributed computing parallel programming software performance software tools Electronic mail Application software

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Evaluation Of Benchmark Performance Estimation For parallel Fortran Programs On Massively parallel SIMD And MIMD Computers

Evaluation Of Benchmark Performance Estimation For Parallel ...

引用

Euromicro Workshop on parallel and Distributed Processing

作者： T. Fahringer Department of Software Technology and Parallel Systems University of Technology Vienna Vienna Austria

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Hierarchical performance prediction for parallel programs

Hierarchical performance prediction for parallel programs

引用

International Symposium and Workshop on systems Engineering of Computer Based systems

作者： R. Blasko Department of Software Technology and Parallel Systems University of Technology Vienna Vienna Austria

Performance prediction should be included in the compilation process, by second-generation supercompilers, for creating an information feedback to improve parallel programs. However, application programs might consist of a number of procedures calling one another and creating a complex call structure. Every procedure consists of several parallel processes with more or less intensive interprocess communications. This parallel system represents a very time consuming workload for the performance analysis tool. We have designed a hierarchical strategy for analysis of the program call structure, which significantly reduces the total time necessary for the performance prediction of the whole parallel program.

关键词： Performance analysis Predictive models Iron Computational modeling Concurrent computing Distributed computing software performance Electronic mail Program processors Application software

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