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HPF_MAP_ARRAY(ARRAY, TEMPLATE_DIM, MAP_ARRAY)

Description. Returns the map array used in the indirect distribution of axis TEMPLATE_DIM of the ultimate align-target associated with ARRAY.

Class. Mapping inquiry subroutine.

Arguments.

ARRAY may be of any type. It must not be scalar. It must not be sequential. It must not be a pointer that is disassociated or an allocatable array that is not allocated. It is an INTENT(IN) argument.

TEMPLATE_DIM must be scalar and of type default integer. Its value must be between one and the rank of the ultimate align-target of ARRAY. It is an INTENT(IN) argument.

MAP_ARRAY must be of type default integer and of rank one. Its size must be no smaller than the extent of the PROCESSORS_DIM^th axis of the processors arrangement onto which is distributed the ultimate align-target associated with ARRAY. It is an INTENT(OUT) argument.

The i^th element of MAP_ARRAY is set to the processor index to which the i^th element of the ultimate align-target of ARRAY along axis TEMPLATE_DIM is mapped. If axis TEMPLATE_DIM of the ultimate align-target of ARRAY is collapsed, then all elements of the result have the value one.

Example. Given the declarations

      DIMENSION A(2)
!HPF$ TEMPLATE T(4,8)
!HPF$ ALIGN A(I,*) WITH T(2*I,5)
!HPF$ PROCESSORS PROCS(2,2)
!HPF$ DISTRIBUTE T(INDIRECT( (/1,2,2,1/) ), BLOCK( (/3,5/) )) ONTO PROCS

assuming that the actual mappings are as the directives specify, Then after calling
HPF_MAP_ARRAY(A,TEMPLATE_DIM=1, MAP_ARRAY=M), M has the value [1 2 2 1]. After calling HPF_MAP_ARRAY(A,TEMPLATE_DIM=2, MAP_ARRAY=M), M has the value [1 1 1 2 2 2 2 2].