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Experience with massively parallel machines has identified several
basic operations that are very valuable in parallel algorithm design.
The Fortran 90 array intrinsics anticipated some of these, but not
all. HPF adds several classes of parallel
operations to the language definition as intrinsic functions and as standard
library functions. In addition, several system inquiry functions
useful for controlling parallel execution are provided in HPF.
Section describes these functions and subroutines.
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