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Manual Reference Pages  -  MPI_TYPE_CREATE_INDEXED_BLOCK (3)

NAME

MPI_Type_create_indexed_block, MPI_Type_create_hindexed_block - Creates an indexed data type with the same block length for all blocks.

CONTENTS

Syntax
C Syntax
Fortran Syntax
C++ Syntax
Input Parameters
Output Parameters
Description
Errors
See Also

SYNTAX

C Syntax

#include <mpi.h>
int MPI_Type_create_indexed_block(int count, int blocklength, const int array_of_displacements[], MPI_Datatype oldtype, MPI_Datatype *newtype)

int MPI_Type_create_hindexed_block(int count, int blocklength, const int array_of_displacements[], MPI_Datatype oldtype, MPI_Datatype *newtype)

Fortran Syntax

INCLUDE ’mpif.h’
MPI_TYPE_CREATE_INDEXED_BLOCK(COUNT, BLOCKLENGTH,
                ARRAY_OF_DISPLACEMENTS, OLDTYPE, NEWTYPE, IERROR)
        INTEGER COUNT, BLOCKLENGTH, ARRAY_OF_DISPLACEMENTS(*),
                OLDTYPE, NEWTYPE, IERROR 

MPI_TYPE_CREATE_HINDEXED_BLOCK(COUNT, BLOCKLENGTH,                 ARRAY_OF_DISPLACEMENTS, OLDTYPE, NEWTYPE, IERROR)         INTEGER COUNT, BLOCKLENGTH, ARRAY_OF_DISPLACEMENTS(*),          OLDTYPE, NEWTYPE, IERROR

C++ Syntax

#include <mpi.h>
MPI::Datatype MPI::Datatype::Create_indexed_block( int count,
        int blocklength, const int array_of_displacements[]) const

MPI::Datatype MPI::Datatype::Create_hindexed_block( int count,         int blocklength, const int array_of_displacements[]) const

INPUT PARAMETERS

count Length of array of displacements (integer).
blocklength
  Size of block (integer).
array_of_displacements
  Array of displacements (array of integers). In units of the extent of oldtype for MPI_Type_create_indexed_block and bytes for MPI_Type_create_hindexed_block.
oldtype Old data type (handle).

OUTPUT PARAMETERS

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

DESCRIPTION

MPI_Type_create_indexed_block and MPI_Type_create_hindexed_block create an indexed data type with the same block length for all blocks. The only difference between the two functions is MPI_Type_create_indexed_block takes an array of displacements in units of the extent of oldtype while MPI_Type_create_hindexed_block takes displacements 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_indexed

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1.10.2 MPI_TYPE_CREATE_INDEXED_BLOCK (3) Jan 21, 2016

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