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MPI_Type_size - Returns the number of bytes occupied by entries in
a data type.
#include <mpi.h>
int MPI_Type_size(MPI_Datatype datatype, int *size)
INCLUDE ’mpif.h’
MPI_TYPE_SIZE(DATATYPE, SIZE, IERROR)
INTEGER DATATYPE, SIZE, IERROR
#include <mpi.h>
int Datatype::Get_size() const
- datatype
- Datatype (handle).
- size
- Datatype size (integer).
- IERROR
- Fortran only: Error status (integer).
MPI_Type_size returns the total size, in bytes, of the entries
in the type signature associated with datatype; i.e., the total size of the
data in a message that would be created with this datatype. Entries that
occur multiple times in the datatype are counted with their multiplicity.
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.
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