chickadee » mpi » MPI:make-cart


Creates a new communicator with Cartesian topology information. Argument DIMS is an SRFI-4 s32vector that contains the number of dimensions of the Cartesian grid. Argument PERIODS is an SRFI-4 s32vector of the same length as DIMS that indicates if the grid is periodic (1) or not (0) in each dimension. Argument REORDER is a boolean value that indicates whether process ranking may be reordered.