1 2 static char help[] = "Tests DMDA interpolation.\n\n"; 3 4 #include <petscdm.h> 5 #include <petscdmda.h> 6 7 int main(int argc,char **argv) 8 { 9 PetscInt M1 = 3,M2,dof = 1,s = 1,ratio = 2,dim = 1; 10 PetscErrorCode ierr; 11 DM da_c,da_f; 12 Vec v_c,v_f; 13 Mat Interp; 14 PetscScalar one = 1.0; 15 PetscBool pt; 16 DMBoundaryType bx = DM_BOUNDARY_NONE,by = DM_BOUNDARY_NONE,bz = DM_BOUNDARY_NONE; 17 18 ierr = PetscInitialize(&argc,&argv,(char*)0,help);if (ierr) return ierr; 19 ierr = PetscOptionsGetInt(NULL,NULL,"-dim",&dim,NULL);CHKERRQ(ierr); 20 ierr = PetscOptionsGetInt(NULL,NULL,"-M",&M1,NULL);CHKERRQ(ierr); 21 ierr = PetscOptionsGetInt(NULL,NULL,"-stencil_width",&s,NULL);CHKERRQ(ierr); 22 ierr = PetscOptionsGetInt(NULL,NULL,"-ratio",&ratio,NULL);CHKERRQ(ierr); 23 ierr = PetscOptionsGetInt(NULL,NULL,"-dof",&dof,NULL);CHKERRQ(ierr); 24 ierr = PetscOptionsGetBool(NULL,NULL,"-periodic",(PetscBool*)&pt,NULL);CHKERRQ(ierr); 25 26 if (pt) { 27 if (dim > 0) bx = DM_BOUNDARY_PERIODIC; 28 if (dim > 1) by = DM_BOUNDARY_PERIODIC; 29 if (dim > 2) bz = DM_BOUNDARY_PERIODIC; 30 } 31 if (bx == DM_BOUNDARY_NONE) { 32 M2 = ratio*(M1-1) + 1; 33 } else { 34 M2 = ratio*M1; 35 } 36 37 /* Set up the array */ 38 if (dim == 1) { 39 ierr = DMDACreate1d(PETSC_COMM_WORLD,bx,M1,dof,s,NULL,&da_c);CHKERRQ(ierr); 40 ierr = DMDACreate1d(PETSC_COMM_WORLD,bx,M2,dof,s,NULL,&da_f);CHKERRQ(ierr); 41 } else if (dim == 2) { 42 ierr = DMDACreate2d(PETSC_COMM_WORLD,bx,by,DMDA_STENCIL_BOX,M1,M1,PETSC_DECIDE,PETSC_DECIDE,dof,s,NULL,NULL,&da_c);CHKERRQ(ierr); 43 ierr = DMDACreate2d(PETSC_COMM_WORLD,bx,by,DMDA_STENCIL_BOX,M2,M2,PETSC_DECIDE,PETSC_DECIDE,dof,s,NULL,NULL,&da_f);CHKERRQ(ierr); 44 } else if (dim == 3) { 45 ierr = DMDACreate3d(PETSC_COMM_WORLD,bx,by,bz,DMDA_STENCIL_BOX,M1,M1,M1,PETSC_DECIDE,PETSC_DECIDE,PETSC_DECIDE,dof,s,NULL,NULL,NULL,&da_c);CHKERRQ(ierr); 46 ierr = DMDACreate3d(PETSC_COMM_WORLD,bx,by,bz,DMDA_STENCIL_BOX,M2,M2,M2,PETSC_DECIDE,PETSC_DECIDE,PETSC_DECIDE,dof,s,NULL,NULL,NULL,&da_f);CHKERRQ(ierr); 47 } else SETERRQ(PETSC_COMM_WORLD,PETSC_ERR_SUP,"dim must be 1,2, or 3"); 48 ierr = DMSetFromOptions(da_c);CHKERRQ(ierr); 49 ierr = DMSetUp(da_c);CHKERRQ(ierr); 50 ierr = DMSetFromOptions(da_f);CHKERRQ(ierr); 51 ierr = DMSetUp(da_f);CHKERRQ(ierr); 52 53 ierr = DMCreateGlobalVector(da_c,&v_c);CHKERRQ(ierr); 54 ierr = DMCreateGlobalVector(da_f,&v_f);CHKERRQ(ierr); 55 56 ierr = VecSet(v_c,one);CHKERRQ(ierr); 57 ierr = DMCreateInterpolation(da_c,da_f,&Interp,NULL);CHKERRQ(ierr); 58 ierr = MatMult(Interp,v_c,v_f);CHKERRQ(ierr); 59 ierr = VecView(v_f,PETSC_VIEWER_STDOUT_WORLD);CHKERRQ(ierr); 60 ierr = MatMultTranspose(Interp,v_f,v_c);CHKERRQ(ierr); 61 ierr = VecView(v_c,PETSC_VIEWER_STDOUT_WORLD);CHKERRQ(ierr); 62 63 ierr = MatDestroy(&Interp);CHKERRQ(ierr); 64 ierr = VecDestroy(&v_c);CHKERRQ(ierr); 65 ierr = DMDestroy(&da_c);CHKERRQ(ierr); 66 ierr = VecDestroy(&v_f);CHKERRQ(ierr); 67 ierr = DMDestroy(&da_f);CHKERRQ(ierr); 68 ierr = PetscFinalize(); 69 return ierr; 70 } 71 72 73 74 75