1.5 KiB
Исполняемый файл
1.5 KiB
Исполняемый файл
Name
MPI_Cartdim_get - Retrieves Cartesian topology information
associated with a communicator.
Syntax
C Syntax
#include <mpi.h>
int MPI_Cartdim_get(MPI_Comm comm, int *ndims)
Fortran Syntax
USE MPI
! or the older form: INCLUDE 'mpif.h'
MPI_CARTDIM_GET(COMM, NDIMS, IERROR)
INTEGER COMM, NDIMS, IERROR
Fortran 2008 Syntax
USE mpi_f08
MPI_Cartdim_get(comm, ndims, ierror)
TYPE(MPI_Comm), INTENT(IN) :: comm
INTEGER, INTENT(OUT) :: ndims
INTEGER, OPTIONAL, INTENT(OUT) :: ierror
Input Parameter
comm: Communicator with Cartesian structure (handle).
Output Parameters
ndims: Number of dimensions of the Cartesian structure (integer).IERROR: Fortran only: Error status (integer).
Description
MPI_Cartdim_get returns the number of dimensions of the Cartesian
structure.
Errors
Almost all MPI routines return an error value; C routines as the value
of the function and Fortran routines in the last argument.
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.