al_subarray_.c File Reference

Creates a datatype describing a subarray of a multidimensional array. More...

#include "al_hidden.h"

Functions
int	AL_Type_create_subarray (int ndims, int *array_of_sizes, int *array_of_subsizes, int *array_of_starts, int order, MPI_Datatype oldtype, MPI_Datatype *newtype)

Detailed Description

Creates a datatype describing a subarray of a multidimensional array

Authors

A. Malagoli (University of Chicago)

Date

Jul 17, 1999

Function Documentation

int AL_Type_create_subarray	(	int	ndims,
		int *	array_of_sizes,
		int *	array_of_subsizes,
		int *	array_of_starts,
		int	order,
		MPI_Datatype	oldtype,
		MPI_Datatype *	newtype
	)

Creates a datatype describing a subarray of a multidimensional array NOTE: This routine has been modified from R. Thakur's ROMIO implementation of MPI_Type_create_subarry. The reason for keeping a local copy is mainly to reduce this package's dependence on ROMIO. It only affects the non I/O components of the library (e.g. AL_Allgather).

Parameters

[in]	ndims	number of array dimensions
[in]	array_of_sizes	number of elements of type oldtype in each dimension of the full array
[in]	array_of_subsizes	number of elements of type oldtype in each dimension of the subarray
[in]	array_of_starts	starting coordinates of the subarray in each dimension
[in]	order	array storage order flag
[in]	oldtype	old datatype (handle)
[out]	newtype	new datatype (handle)