HPF 1.1 Directives and Language Extensions in the HPF 1.1 Subset

The following HPF 1.1 directives and language extensions to Fortran 90 were included in the HPF 1.1 Subset:

• The basic data distribution and alignment directives: ALIGN, DISTRIBUTE, PROCESSORS. and TEMPLATE.
• The forall-statement (but not the forall-construct).
• The INDEPENDENT directive.
• The SEQUENCE and NO SEQUENCE directives.
• The system inquiry intrinsic functions NUMBER_OF_PROCESSORS and PROCESSORS_SHAPE.
• The computational intrinsic functions ILEN, and the HPF extended Fortran intrinsics MAXLOC and MINLOC, with the restriction that any actual argument expression corresponding to an optional DIM argument must be an initialization expression.

For a discussion of the rationale by which features were chosen for the HPF 1.1 Subset, please consult HPF Language Specification Version 1.1.