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Man Pages


Manual Reference Pages  -  MPI_TYPE_CREATE_STRUCT (3)

NAME

MPI_Type_create_struct - Creates a structured data type.

CONTENTS

Syntax
C Syntax
Fortran Syntax (see FORTRAN 77 NOTES)
C++ Syntax
Input Parameters
Output Parameters
Description
Fortran 77 Notes
Errors
See Also

SYNTAX

C Syntax

#include <mpi.h>
int MPI_Type_create_struct(int count, int array_of_blocklengths[],
        const MPI_Aint array_of_displacements[], const MPI_Datatype array_of_types[],
        MPI_Datatype *newtype)

Fortran Syntax (see FORTRAN 77 NOTES)

INCLUDE ’mpif.h’
MPI_TYPE_CREATE_STRUCT(COUNT, ARRAY_OF_BLOCKLENGTHS,
                ARRAY_OF_DISPLACEMENTS, ARRAY_OF_TYPES, NEWTYPE, IERROR)
        INTEGER COUNT, ARRAY_OF_BLOCKLENGTHS(*), ARRAY_OF_TYPES(*),
        INTEGER NEWTYPE, IERROR 
        INTEGER(KIND=MPI_ADDRESS_KIND) ARRAY_OF_DISPLACEMENTS(*)

C++ Syntax

#include <mpi.h>
static MPI::Datatype MPI::Datatype::Create_struct(int count,
        const int array_of_blocklengths[], const MPI::Aint
        array_of_displacements[], const MPI::Datatype
        array_of_types[])

INPUT PARAMETERS

count Number of blocks (integer) -- also number of entries in arrays array_of_types, array_of_displacements, and array_of_blocklengths.
array_of_blocklengths
  Number of elements in each block (array of integers).
array_of_displacements
  Byte displacement of each block (array of integers).
array_of_types
  Type of elements in each block (array of handles to data-type objects).

OUTPUT PARAMETERS

newtype New data type (handle).
IERROR Fortran only: Error status (integer).

DESCRIPTION

MPI_Type_create_struct creates a structured data type. This routine replaces MPI_Type_struct, which is now deprecated.

NOTE - This routine replaces MPI_Type_struct, which is deprecated. See the man page MPI_Type_struct(3) for information about that routine.

FORTRAN 77 NOTES

The MPI standard prescribes portable Fortran syntax for the ARRAY_OF_DISPLACEMENTS(*) argument only for Fortran 90. FORTRAN 77 users may use the non-portable syntax

     INTEGER*MPI_ADDRESS_KIND ARRAY_OF_DISPLACEMENTS(*)

where MPI_ADDRESS_KIND is a constant defined in mpif.h and gives the length of the declared integer in bytes.

ERRORS

Almost all MPI routines return an error value; C routines as the value of the function and Fortran routines in the last argument. C++ functions do not return errors. If the default error handler is set to MPI::ERRORS_THROW_EXCEPTIONS, then on error the C++ exception mechanism will be used to throw an MPI::Exception object.

Before the error value is returned, the current MPI error handler is called. By default, this error handler aborts the MPI job, except for I/O function errors. The error handler may be changed with MPI_Comm_set_errhandler; the predefined error handler MPI_ERRORS_RETURN may be used to cause error values to be returned. Note that MPI does not guarantee that an MPI program can continue past an error.

SEE ALSO

MPI_Type_struct
MPI_Type_create_hindexed

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1.10.2 MPI_TYPE_CREATE_STRUCT (3) Jan 21, 2016

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