MPI_Type_create_indexed_block, MPI_Type_create_hindexed_block − Creates an indexed data type with the same block length for all blocks.
#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 MPI_Aint array_of_displacements[], MPI_Datatype oldtype, MPI_Datatype *newtype)
USE MPI
! or the older form: INCLUDE ’mpif.h’
MPI_TYPE_CREATE_INDEXED_BLOCK(COUNT, BLOCKLENGTH,
ARRAY_OF_DISPLACEMENTS, OLDTYPE, NEWTYPE, IERROR) |
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INTEGER |
COUNT, BLOCKLENGTH, ARRAY_OF_DISPLACEMENTS(*), | |||
OLDTYPE, NEWTYPE, IERROR |
MPI_TYPE_CREATE_HINDEXED_BLOCK(COUNT, BLOCKLENGTH,
ARRAY_OF_DISPLACEMENTS, OLDTYPE, NEWTYPE, IERROR) |
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INTEGER |
COUNT, BLOCKLENGTH, OLDTYPE, NEWTYPE | |||
INTEGER(KIND=MPI_ADDRESS_KIND) ARRAY_OF_DISPLACEMENTS(*) |
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INTEGER |
IERROR |
USE mpi_f08 MPI_Type_create_indexed_block(count, blocklength, array_of_displacements, |
oldtype, newtype, ierror) | |||
INTEGER, INTENT(IN) :: count, blocklength, |
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array_of_displacements(count) |
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TYPE(MPI_Datatype), INTENT(IN) :: oldtype |
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TYPE(MPI_Datatype), INTENT(OUT) :: newtype |
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INTEGER, OPTIONAL, INTENT(OUT) :: ierror |
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MPI_Type_create_hindexed_block(count, blocklength, array_of_displacements, |
oldtype, newtype, ierror) | |||
INTEGER, INTENT(IN) :: count, blocklength |
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INTEGER(KIND=MPI_ADDRESS_KIND), INTENT(IN) :: |
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array_of_displacements(count) |
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TYPE(MPI_Datatype), INTENT(IN) :: oldtype |
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TYPE(MPI_Datatype), INTENT(OUT) :: newtype |
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INTEGER, OPTIONAL, INTENT(OUT) :: ierror |
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). |
newtype |
New data type (handle). |
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IERROR |
Fortran only: Error status (integer). |
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.
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.
MPI_Type_indexed