MPI_Cart_coords(3) | Open MPI | MPI_Cart_coords(3) |
MPI_Cart_coords - Determines process coords in Cartesian topology given rank in group.
#include <mpi.h> int MPI_Cart_coords(MPI_Comm comm, int rank, int maxdims, int coords[])
USE MPI ! or the older form: INCLUDE 'mpif.h' MPI_CART_COORDS(COMM, RANK, MAXDIMS, COORDS, IERROR) INTEGER COMM, RANK, MAXDIMS, COORDS(*), IERROR
USE mpi_f08 MPI_Cart_coords(comm, rank, maxdims, coords, ierror) TYPE(MPI_Comm), INTENT(IN) :: comm INTEGER, INTENT(IN) :: rank, maxdims INTEGER, INTENT(OUT) :: coords(maxdims) INTEGER, OPTIONAL, INTENT(OUT) :: ierror
#include <mpi.h> void Cartcomm::Get_coords(int rank, int maxdims, int coords[]) const
MPI_Cart_coords provies a mapping of ranks to Cartesian coordinates.
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.
December 18, 2020 | 4.1.0 |