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PHYSICAL_TO_ABSTRACT(ARRAY, PROC, INDEX)

Description. Returns coordinates for an abstract processor, relative to a global actual argument array, corresponding to a specified physical processor.

Class. Subroutine.

Arguments.

ARRAY may be of any type; it must be a dummy array that is associated with a global HPF array actual argument. It is an INTENT(IN) argument.

PROC must be scalar and of type default integer. It is an INTENT(IN) argument. It contains an identifying value for a physical processor.

INDEX must be a rank-1 integer array. It is an INTENT(OUT) argument. The size of INDEX must equal the rank of the processor arrangement onto which the global HPF array is mapped. INDEX receives the coordinates within this processors arrangement of the abstract processor associated with the physical processor specified by PROC. The value of the i^th element will be in the range 1 to e_i, where e_i is the extent of the i^th dimension of the processors arrangement.

This procedure can be used only on systems where there is a one-to-one correspondence between abstract processors and physical processors. On systems where this correspondence is one-to-many an equivalent, system-dependent procedure should be provided.