MPI_Cart_get(3) | Open MPI | MPI_Cart_get(3) |
MPI_Cart_get - Retrieves Cartesian topology information associated with a communicator.
#include <mpi.h> int MPI_Cart_get(MPI_Comm comm, int maxdims, int dims[], int periods[], int coords[])
USE MPI ! or the older form: INCLUDE 'mpif.h' MPI_CART_GET(COMM, MAXDIMS, DIMS, PERIODS, COORDS, IERROR) INTEGER COMM, MAXDIMS, DIMS(*), COORDS(*), IERROR LOGICAL PERIODS(*)
USE mpi_f08 MPI_Cart_get(comm, maxdims, dims, periods, coords, ierror) TYPE(MPI_Comm), INTENT(IN) :: comm INTEGER, INTENT(IN) :: maxdims INTEGER, INTENT(OUT) :: dims(maxdims), coords(maxdims) LOGICAL, INTENT(OUT) :: periods(maxdims) INTEGER, OPTIONAL, INTENT(OUT) :: ierror
#include <mpi.h> void Cartcomm::Get_topo(int maxdims, int dims[], bool periods[], int coords[]) const
The functions MPI_Cartdim_get and MPI_Cart_get return the Cartesian topology information that was associated with a communicator by MPI_Cart_create.
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_Cartdim_get MPI_Cart_create
October 29, 2018 | 3.1.3 |