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.nn";
5: #include petscmat.h
6: #include petscda.h
8: int main(int argc,char **argv)
9: {
10: int i,M = 3,N = 5,P=3,s=1,w=2;
11: int m = PETSC_DECIDE,n = PETSC_DECIDE,p = PETSC_DECIDE,ierr;
12: int *lx = PETSC_NULL,*ly = PETSC_NULL,*lz = PETSC_NULL;
13: DA da;
14: PetscTruth flg,test_order;
15: ISColoring coloring;
16: Mat mat;
17: DAStencilType stencil_type = DA_STENCIL_BOX;
18: Vec lvec,dvec;
19: MatFDColoring fdcoloring;
21: PetscInitialize(&argc,&argv,(char*)0,help);
23: /* Read options */
24: PetscOptionsGetInt(PETSC_NULL,"-M",&M,PETSC_NULL);
25: PetscOptionsGetInt(PETSC_NULL,"-N",&N,PETSC_NULL);
26: PetscOptionsGetInt(PETSC_NULL,"-P",&P,PETSC_NULL);
27: PetscOptionsGetInt(PETSC_NULL,"-m",&m,PETSC_NULL);
28: PetscOptionsGetInt(PETSC_NULL,"-n",&n,PETSC_NULL);
29: PetscOptionsGetInt(PETSC_NULL,"-p",&p,PETSC_NULL);
30: PetscOptionsGetInt(PETSC_NULL,"-s",&s,PETSC_NULL);
31: PetscOptionsGetInt(PETSC_NULL,"-w",&w,PETSC_NULL);
32: PetscOptionsHasName(PETSC_NULL,"-star",&flg);
33: if (flg) stencil_type = DA_STENCIL_STAR;
34: PetscOptionsHasName(PETSC_NULL,"-test_order",&test_order);
35: PetscOptionsHasName(PETSC_NULL,"-distribute",&flg);
36: if (flg) {
37: if (m == PETSC_DECIDE) SETERRQ(1,"Must set -m option with -distribute option");
38: PetscMalloc(m*sizeof(int),&lx);
39: for (i=0; i<m-1; i++) { lx[i] = 4;}
40: lx[m-1] = M - 4*(m-1);
41: if (n == PETSC_DECIDE) SETERRQ(1,"Must set -n option with -distribute option");
42: PetscMalloc(n*sizeof(int),&ly);
43: for (i=0; i<n-1; i++) { ly[i] = 2;}
44: ly[n-1] = N - 2*(n-1);
45: if (p == PETSC_DECIDE) SETERRQ(1,"Must set -p option with -distribute option");
46: PetscMalloc(p*sizeof(int),&lz);
47: for (i=0; i<p-1; i++) { lz[i] = 2;}
48: lz[p-1] = P - 2*(p-1);
49: }
51: /* Create distributed array and get vectors */
52: DACreate3d(PETSC_COMM_WORLD,DA_NONPERIODIC,stencil_type,M,N,P,m,n,p,w,s,
53: lx,ly,lz,&da);
54: if (lx) {
55: PetscFree(lx);
56: PetscFree(ly);
57: PetscFree(lz);
58: }
60: DAGetColoring(da,IS_COLORING_LOCAL,&coloring);
61: DAGetMatrix(da,MATMPIAIJ,&mat);
62: MatFDColoringCreate(mat,coloring,&fdcoloring);
64: DACreateGlobalVector(da,&dvec);
65: DACreateLocalVector(da,&lvec);
67: /* Free memory */
68: MatFDColoringDestroy(fdcoloring);
69: VecDestroy(dvec);
70: VecDestroy(lvec);
71: MatDestroy(mat);
72: ISColoringDestroy(coloring);
73: DADestroy(da);
74: PetscFinalize();
75: return 0;
76: }
77: