1 2 static char help[] = "Tests MatSetValuesBlockedStencil() in 3d.\n\n"; 3 4 #include <petscmat.h> 5 #include <petscdm.h> 6 #include <petscdmda.h> 7 8 int main(int argc,char **argv) 9 { 10 PetscInt M = 3,N = 4,P = 2,s = 1,w = 2,i, m = PETSC_DECIDE,n = PETSC_DECIDE,p = PETSC_DECIDE; 11 PetscErrorCode ierr; 12 DM da; 13 Mat mat; 14 DMDAStencilType stencil_type = DMDA_STENCIL_BOX; 15 PetscBool flg = PETSC_FALSE; 16 MatStencil idx[2],idy[2]; 17 PetscScalar *values; 18 19 ierr = PetscInitialize(&argc,&argv,(char*)0,help);if (ierr) return ierr; 20 CHKERRQ(PetscOptionsGetInt(NULL,NULL,"-M",&M,NULL)); 21 CHKERRQ(PetscOptionsGetInt(NULL,NULL,"-N",&N,NULL)); 22 CHKERRQ(PetscOptionsGetInt(NULL,NULL,"-P",&P,NULL)); 23 CHKERRQ(PetscOptionsGetInt(NULL,NULL,"-m",&m,NULL)); 24 CHKERRQ(PetscOptionsGetInt(NULL,NULL,"-n",&n,NULL)); 25 CHKERRQ(PetscOptionsGetInt(NULL,NULL,"-p",&p,NULL)); 26 CHKERRQ(PetscOptionsGetInt(NULL,NULL,"-s",&s,NULL)); 27 CHKERRQ(PetscOptionsGetInt(NULL,NULL,"-w",&w,NULL)); 28 CHKERRQ(PetscOptionsGetBool(NULL,NULL,"-star",&flg,NULL)); 29 if (flg) stencil_type = DMDA_STENCIL_STAR; 30 31 /* Create distributed array and get vectors */ 32 CHKERRQ(DMDACreate3d(PETSC_COMM_WORLD,DM_BOUNDARY_NONE,DM_BOUNDARY_NONE,DM_BOUNDARY_NONE,stencil_type,M,N,P,m,n,p,w,s,0,0,0,&da)); 33 CHKERRQ(DMSetFromOptions(da)); 34 CHKERRQ(DMSetUp(da)); 35 CHKERRQ(DMSetMatType(da,MATMPIBAIJ)); 36 CHKERRQ(DMCreateMatrix(da,&mat)); 37 38 idx[0].i = 1; idx[0].j = 1; idx[0].k = 0; 39 idx[1].i = 2; idx[1].j = 1; idx[1].k = 0; 40 idy[0].i = 1; idy[0].j = 2; idy[0].k = 0; 41 idy[1].i = 2; idy[1].j = 2; idy[1].k = 0; 42 CHKERRQ(PetscMalloc1(2*2*w*w,&values)); 43 for (i=0; i<2*2*w*w; i++) values[i] = i; 44 CHKERRQ(MatSetValuesBlockedStencil(mat,2,idx,2,idy,values,INSERT_VALUES)); 45 CHKERRQ(MatAssemblyBegin(mat,MAT_FINAL_ASSEMBLY)); 46 CHKERRQ(MatAssemblyEnd(mat,MAT_FINAL_ASSEMBLY)); 47 48 /* Free memory */ 49 CHKERRQ(PetscFree(values)); 50 CHKERRQ(MatDestroy(&mat)); 51 CHKERRQ(DMDestroy(&da)); 52 ierr = PetscFinalize(); 53 return ierr; 54 } 55