mpi_type_dup(3openmpi) [osx man page]

MPI_Type_dup(3OpenMPI)													    MPI_Type_dup(3OpenMPI)

NAME

       MPI_Type_dup - Duplicates a data type with associated key values.

SYNTAX

C Syntax
       #include <mpi.h>
       int MPI_Type_dup(MPI_Datatype type, MPI_Datatype *newtype)

Fortran Syntax
       INCLUDE 'mpif.h'
       MPI_TYPE_DUP(TYPE, NEWTYPE, IERROR)
	    INTEGER   TYPE, NEWTYPE, IERROR

C++ Syntax
       #include <mpi.h>
       MPI::Datatype MPI::Datatype::Dup() const

INPUT PARAMETER

       type	 Data type (handle).

OUTPUT PARAMETERS

       newtype	 Copy of type (handle).

       IERROR	 Fortran only: Error status (integer).

DESCRIPTION

       MPI_Type_dup  is  a  type constructor that duplicates the existing type with associated key values. For each key value, the respective copy
       callback function determines the attribute value associated with this key in the new communicator. One particular action that a copy  call-
       back  may  take	is  to delete the attribute from the new data type. Returns in newtype a new data type with exactly the same properties as
       type, as well as any copied cached information. The new data type has identical upper bound and lower bound and yields the same net  result
       when fully decoded with the functions described in Section 8.6 of the MPI-2 standard. newtype has the same committed state as the old type.

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++ func-
       tions 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_create_keyval

Open MPI 1.2							  September 2006					    MPI_Type_dup(3OpenMPI)

MPI_Type_create_resized(3OpenMPI)										 MPI_Type_create_resized(3OpenMPI)

NAME

       MPI_Type_create_resized - Returns a new data type with new extent and upper and lower bounds.

SYNTAX

C Syntax
       #include <mpi.h>
       int MPI_Type_create_resized(MPI_Datatype oldtype, MPI_Aint lb,
	    MPI_Aint extent, MPI_Datatype *newtype)

Fortran Syntax (see FORTRAN 77 NOTES)
       INCLUDE 'mpif.h'
       MPI_TYPE_CREATE_RESIZED(OLDTYPE, LB, EXTENT, NEWTYPE, IERROR)
	    INTEGER   OLDTYPE, NEWTYPE, IERROR
	    INTEGER(KIND=MPI_ADDRESS_KIND)     LB, EXTENT

C++ Syntax
       #include <mpi.h>
       MPI::Datatype MPI::Datatype::Create_resized(const MPI::Aint lb,
	    const MPI::Aint extent) const

INPUT PARAMETERS

       oldtype	 Input data type (handle).

       lb	 New lower bound of data type (integer).

       extent	 New extent of data type (integer).

OUTPUT PARAMETERS

       newtype	 Output data type (handle).

       IERROR	 Fortran only: Error status (integer).

DESCRIPTION

       MPI_Type_create_resized	returns  in  newtype a handle to a new data type that is identical to oldtype, except that the lower bound of this
       new data type is set to be lb, and its upper bound is set to be lb + extent. Any previous lb and ub markers are erased, and a new  pair	of
       lower  bound  and  upper  bound markers are put in the positions indicated by the lb and extent arguments. This affects the behavior of the
       data type when used in communication operations, with count > 1, and when used in the construction of new derived data types.

FORTRAN 77 NOTES
       The MPI standard prescribes portable Fortran syntax for the LB and EXTENT arguments only for Fortran 90. FORTRAN 77 users may use the  non-
       portable syntax

	    INTEGER*MPI_ADDRESS_KIND LB
       or
	    INTEGER*MPI_ADDRESS_KIND EXTENT

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

NOTE

       Use of MPI_Type_create_resized is strongly recommended over the old MPI-1 functions MPI_Type_extent and MPI_Type_lb.

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++ func-
       tions 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_get_extent

Open MPI 1.2							  September 2006				 MPI_Type_create_resized(3OpenMPI)