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Implementation and evaluation of HPF/SX V2
Author(s) -
Murai Hitoshi,
Araki Takuya,
Hayashi Yasuharu,
Suehiro Kenji,
Seo Yoshiki
Publication year - 2002
Publication title -
concurrency and computation: practice and experience
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.309
H-Index - 67
eISSN - 1532-0634
pISSN - 1532-0626
DOI - 10.1002/cpe.639
Subject(s) - compiler , computer science , benchmark (surveying) , parallel computing , speedup , vectorization (mathematics) , fortran , directive , programming language , geodesy , geography
Abstract We are developing HPF/SX V2, a High Performance Fortran (HPF) compiler for vector parallel machines. It provides some unique extensions as well as the features of HPF 2.0 and HPF/JA. In particular, this paper describes four of them: (1) the ON directive of HPF 2.0; (2) the REFLECT and LOCAL directives of HPF/JA; (3) vectorization directives; and (4) automatic parallelization. We evaluate these features through some benchmark programs on NEC SX‐5. The results show that each of them achieved a 5–8 times speedup in 8‐CPU parallel execution and the four features are useful for vector parallel execution. We also evaluate the overall performance of HPF/SX V2 by using over 30 well‐known benchmark programs from HPFBench, APR Benchmarks, GENESIS Benchmarks, and NAS Parallel Benchmarks. About half of the programs showed good performance, while the other half suggest weakness of the compiler, especially on its runtimes. It is necessary to improve them to put the compiler to practical use. Copyright © 2002 John Wiley & Sons, Ltd.