Actual source code: ex9.c
1: /*$Id: ex9.c,v 1.21 2001/06/21 21:19:28 bsmith Exp $*/
2:
3: static char help[] = "Tests DAGetColoring() in 3d.\n\n";
5: #include petscmat.h
6: #include petscda.h
10: int main(int argc,char **argv)
11: {
12: int i,M = 3,N = 5,P=3,s=1,w=2;
13: int m = PETSC_DECIDE,n = PETSC_DECIDE,p = PETSC_DECIDE,ierr;
14: int *lx = PETSC_NULL,*ly = PETSC_NULL,*lz = PETSC_NULL;
15: DA da;
16: PetscTruth flg,test_order;
17: ISColoring coloring;
18: Mat mat;
19: DAStencilType stencil_type = DA_STENCIL_BOX;
20: Vec lvec,dvec;
21: MatFDColoring fdcoloring;
23: PetscInitialize(&argc,&argv,(char*)0,help);
25: /* Read options */
26: PetscOptionsGetInt(PETSC_NULL,"-M",&M,PETSC_NULL);
27: PetscOptionsGetInt(PETSC_NULL,"-N",&N,PETSC_NULL);
28: PetscOptionsGetInt(PETSC_NULL,"-P",&P,PETSC_NULL);
29: PetscOptionsGetInt(PETSC_NULL,"-m",&m,PETSC_NULL);
30: PetscOptionsGetInt(PETSC_NULL,"-n",&n,PETSC_NULL);
31: PetscOptionsGetInt(PETSC_NULL,"-p",&p,PETSC_NULL);
32: PetscOptionsGetInt(PETSC_NULL,"-s",&s,PETSC_NULL);
33: PetscOptionsGetInt(PETSC_NULL,"-w",&w,PETSC_NULL);
34: PetscOptionsHasName(PETSC_NULL,"-star",&flg);
35: if (flg) stencil_type = DA_STENCIL_STAR;
36: PetscOptionsHasName(PETSC_NULL,"-test_order",&test_order);
37: PetscOptionsHasName(PETSC_NULL,"-distribute",&flg);
38: if (flg) {
39: if (m == PETSC_DECIDE) SETERRQ(1,"Must set -m option with -distribute option");
40: PetscMalloc(m*sizeof(int),&lx);
41: for (i=0; i<m-1; i++) { lx[i] = 4;}
42: lx[m-1] = M - 4*(m-1);
43: if (n == PETSC_DECIDE) SETERRQ(1,"Must set -n option with -distribute option");
44: PetscMalloc(n*sizeof(int),&ly);
45: for (i=0; i<n-1; i++) { ly[i] = 2;}
46: ly[n-1] = N - 2*(n-1);
47: if (p == PETSC_DECIDE) SETERRQ(1,"Must set -p option with -distribute option");
48: PetscMalloc(p*sizeof(int),&lz);
49: for (i=0; i<p-1; i++) { lz[i] = 2;}
50: lz[p-1] = P - 2*(p-1);
51: }
53: /* Create distributed array and get vectors */
54: DACreate3d(PETSC_COMM_WORLD,DA_NONPERIODIC,stencil_type,M,N,P,m,n,p,w,s,
55: lx,ly,lz,&da);
56: if (lx) {
57: PetscFree(lx);
58: PetscFree(ly);
59: PetscFree(lz);
60: }
62: DAGetColoring(da,IS_COLORING_LOCAL,&coloring);
63: DAGetMatrix(da,MATMPIAIJ,&mat);
64: MatFDColoringCreate(mat,coloring,&fdcoloring);
66: DACreateGlobalVector(da,&dvec);
67: DACreateLocalVector(da,&lvec);
69: /* Free memory */
70: MatFDColoringDestroy(fdcoloring);
71: VecDestroy(dvec);
72: VecDestroy(lvec);
73: MatDestroy(mat);
74: ISColoringDestroy(coloring);
75: DADestroy(da);
76: PetscFinalize();
77: return 0;
78: }
79: