Set the periodicity for the grid.
Set the periodicity for the grid.The argument periodic is an ndim-dimensional integer array that contains the periodicity for each dimension. A zero value for a dimension means non-periodic, while a nonzero value means periodic and contains the actual period. For example, periodicity in the first and third dimensions for a 10x11x12 grid is indicated by the array [10,0,12].
NOTE: Some of the solvers in hypre have power-of-two restrictions on the size of the periodic dimensions.