#include "petscdmda.h"
PetscErrorCode DMDACreate3d(MPI_Comm comm,DMDABoundaryType bx,DMDABoundaryType by,DMDABoundaryType bz,DMDAStencilType stencil_type,PetscInt M,
PetscInt N,PetscInt P,PetscInt m,PetscInt n,PetscInt p,PetscInt dof,PetscInt s,const PetscInt lx[],const PetscInt ly[],const PetscInt lz[],DM *da)
Collective on MPI_Comm
| comm | - MPI communicator | |
| bx,by,bz | - type of ghost nodes the array have. Use one of DMDA_BOUNDARY_NONE, DMDA_BOUNDARY_GHOSTED, DMDA_BOUNDARY_PERIODIC. | |
| stencil_type | - Type of stencil (DMDA_STENCIL_STAR or DMDA_STENCIL_BOX) | |
| M,N,P | - global dimension in each direction of the array (use -M, -N, and or -P to indicate that it may be set to a different value from the command line with -da_grid_x <M> -da_grid_y <N> -da_grid_z <P>) | |
| m,n,p | - corresponding number of processors in each dimension (or PETSC_DECIDE to have calculated) | |
| dof | - number of degrees of freedom per node | |
| s | - stencil width | |
| lx, ly, lz | - arrays containing the number of nodes in each cell along the x, y, and z coordinates, or PETSC_NULL. If non-null, these must be of length as m,n,p and the corresponding m,n, or p cannot be PETSC_DECIDE. Sum of the lx[] entries must be M, sum of the ly[] must N, sum of the lz[] must be P |
| -da_view | - Calls DMView() at the conclusion of DMDACreate3d() | |
| -da_grid_x <nx> | - number of grid points in x direction, if M < 0 | |
| -da_grid_y <ny> | - number of grid points in y direction, if N < 0 | |
| -da_grid_z <nz> | - number of grid points in z direction, if P < 0 | |
| -da_processors_x <MX> | - number of processors in x direction | |
| -da_processors_y <MY> | - number of processors in y direction | |
| -da_processors_z <MZ> | - number of processors in z direction | |
| -da_refine_x <rx> | - refinement ratio in x direction | |
| -da_refine_y <ry> | - refinement ratio in y direction | |
| -da_refine_z <rz> | - refinement ratio in z directio | |
| -da_refine <n> | - refine the DMDA n times before creating it, , if M, N, or P < 0 |
The array data itself is NOT stored in the DMDA, it is stored in Vec objects; The appropriate vector objects can be obtained with calls to DMCreateGlobalVector() and DMCreateLocalVector() and calls to VecDuplicate() if more are needed.
Level:beginner
Location:src/dm/impls/da/da3.c
Index of all DM routines
Table of Contents for all manual pages
Index of all manual pages