MPI_Type_hindexed

Creates an indexed datatype with offsets in bytes

Synopsis

#include "mpi.h"
int MPI_Type_hindexed( count, blocklens, indices, old_type, newtype )
int           count;
int           blocklens[];
MPI_Aint      indices[];
MPI_Datatype  old_type;
MPI_Datatype *newtype;

Input Parameters

	count	number of blocks -- also number of entries in indices and blocklens
	blocklens	number of elements in each block (array of nonnegative integers)
	indices	byte displacement of each block (array of MPI_Aint)
	old_type	old datatype (handle)

Output Parameter

newtype: new datatype (handle)

Notes for Fortran

All MPI routines in Fortran (except for MPI_WTIME and MPI_WTICK) havean additional argument ierr at the end of the argument list. ierris an integer and has the same meaning as the return value of the routinein C. In Fortran, MPI routines are subroutines, and are invoked with thecall statement.

All MPI objects (e.g., MPI_Datatype, MPI_Comm) are of type INTEGERin Fortran.

Also see the discussion for MPI_Type_indexed about the indices in Fortran.

Errors

All MPI routines (except MPI_Wtime and MPI_Wtick) return an error value; C routines as the value of the function and Fortran routines in the lastargument. Before the value is returned, the current MPI error handler iscalled. By default, this error handler aborts the MPI job. The error handlermay be changed with MPI_Errhandler_set; the predefined error handlerMPI_ERRORS_RETURN may be used to cause error values to be returned. Note that MPI does not guarentee that an MPI program can continue pastan error.

MPI_SUCCESS: No error; MPI routine completed successfully.

MPI_ERR_TYPE: Invalid datatype argument. May be an uncommitted MPI_Datatype (see MPI_Type_commit).

MPI_ERR_COUNT: Invalid count argument. Count arguments must be non-negative; a count of zero is often valid.

MPI_ERR_INTERN: This error is returned when some part of the MPICH implementation is unable to acquire memory.

MPI_ERR_ARG: Invalid argument. Some argument is invalid and is not identified by a specific error class (e.g., MPI_ERR_RANK).

Location:type_hind.c