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Scientific Programming
Volume 6 (1997), Issue 1, Pages 41-58

Kemari: A Portable High Performance Fortran System for Distributed Memory Parallel Processors

T. Kamachi,1 A. MÜller,3 R. RÜhl,2 Y. Seo,1 K. Suehiro,1 and M. Tamura3

1C&C Research Laboratories, NEC Corporation, Tokyo, Japan
2CSCS-ETH, Section of Research and Development (SeRD), Centro Svizzero di Calcolo Scientifico, CH-6928 Manno, Switzerland
31st Computers Software Division, NEC Corporation. Tokyo, Japan

Received 26 May 1995; Accepted 26 January 1996

Copyright © 1997 Hindawi Publishing Corporation. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


We have developed a compilation system which extends High Performance Fortran (HPF) in various aspects. We support the parallelization of well-structured problems with loop distribution and alignment directives similar to HPF's data distribution directives. Such directives give both additional control to the user and simplify the compilation process. For the support of unstructured problems, we provide directives for dynamic data distribution through user-defined mappings. The compiler also allows integration of message-passing interface (MPI) primitives. The system is part of a complete programming environment which also comprises a parallel debugger and a performance monitor and analyzer. After an overview of the compiler, we describe the language extensions and related compilation mechanisms in detail. Performance measurements demonstrate the compiler's applicability to a variety of application classes.