MPI_Type_create_indexed_block - Online Linux Manual PageSection : 3
Updated : Jan 21, 2016
Source : 1.10.2
Note : Open MPI
NAMEMPI_Type_create_indexed_block, MPI_Type_create_hindexed_block − Creates an indexed data type with the same block length for all blocks.
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 SyntaxINCLUDE '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 PARAMETERScount 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 PARAMETERSnewtype New data type (handle). IERROR Fortran only: Error status (integer).
DESCRIPTIONMPI_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.
ERRORSAlmost 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 ALSOMPI_Type_indexed
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