MPI_Cart_rank

MPI_Cart_rank maps process grid coordinates to ranks.

C

int MPI_Cart_rank(MPI_Comm comm, int *coords, int *rank)

Fortran

MPI_CART_RANK(COMM, COORDS, RANK, IERROR)
    INTEGER COMM, COORDS(*), RANK, IERROR 

MPI_Cart_coords

MPI_Cart_coords maps ranks to process grid coordinates.

C

int MPI_Cart_coords(MPI_Comm comm, int rank, int maxdims, int *coords)

Fortran

MPI_CART_COORDS(COMM, RANK, MAXDIMS, COORDS, IERROR)
    INTEGER COMM, RANK, MAXDIMS, COORDS(*), IERROR