Abstract
This paper introduces the ideas that underly the data-parallel language High Performance Fortran (HPF) and the new ideas in version 2 of HPF. It first reviews HPF's key language elements. It discusses the meaning of data parallelism and the limitations of HPF version 1 as a data-parallel programming language. The second part of the paper is a review of the development of version 2 of HPF. The extended language, under development in 1996, includes a richer data mapping capability; an extension to the independent loop that allows reduction operations in the loop range; a means for directing the mapping of computation as well as data; and a way to specify concurrent execution of several parallel tasks on disjoint subsets of processors.
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