VPP Fortran and the design of HPF/JA extensions

VPP Fortran is a data parallel language that has been designed for the VPP series of supercomputers. In addition to pure data parallelism, it contains certain low‐level features that were designed to extract high performance from user programs. A comparison of VPP Fortran and High‐Performance Fortra...

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Bibliographic Details
Published in:Concurrency and computation 2002-07, Vol.14 (8-9), p.575-588
Main Authors: Iwashita, Hidetoshi, Sueyasu, Naoki, Kamiya, Sachio, van Waveren, Matthijs
Format: Article
Language:English
Subjects:
asynchronous communication
benchmark
data locality
parallel computing
parallel languages
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Summary:VPP Fortran is a data parallel language that has been designed for the VPP series of supercomputers. In addition to pure data parallelism, it contains certain low‐level features that were designed to extract high performance from user programs. A comparison of VPP Fortran and High‐Performance Fortran (HPF) 2.0 shows that these low‐level features are not available in HPF 2.0. The features include asynchronous inter‐processor communication, explicit shadow, and the LOCAL directive. They were shown in VPP Fortran to be very useful in handling real‐world applications, and they have been included in the HPF/JA extensions. They are described in the paper. The HPF/JA Language Specification Version 1.0 is an extension of HPF 2.0 to achieve practical performance for real‐world applications and is a result of collaboration in the Japan Association for HPF (JAHPF). Some practical programming and tuning procedures with the HPF/JA Language Specification are described, using the NAS Parallel Benchmark BT as an example. Copyright © 2002 John Wiley & Sons, Ltd.
ISSN:1532-0626
1532-0634
DOI:10.1002/cpe.640