Actual source code: ex23.c
2: static char help[] = "Tests VecView()/VecLoad() for DA vectors (this tests DAGlobalToNatural()).\n\n";
4: #include petscda.h
8: int main(int argc,char **argv)
9: {
10: PetscMPIInt size;
11: PetscInt N = 6,m=PETSC_DECIDE,n=PETSC_DECIDE,p=PETSC_DECIDE,M=8,dof=1,stencil_width=1,P=5,pt = 0,st = 0;
13: PetscTruth flg2,flg3;
14: DAPeriodicType periodic = DA_NONPERIODIC;
15: DAStencilType stencil_type = DA_STENCIL_STAR;
16: DA da;
17: Vec global1,global2,global3,global4;
18: PetscScalar mone = -1.0;
19: PetscReal norm;
20: PetscViewer viewer;
21: PetscRandom rdm;
23: PetscInitialize(&argc,&argv,(char*)0,help);
25: PetscOptionsGetInt(PETSC_NULL,"-M",&M,PETSC_NULL);
26: PetscOptionsGetInt(PETSC_NULL,"-N",&N,PETSC_NULL);
27: PetscOptionsGetInt(PETSC_NULL,"-P",&P,PETSC_NULL);
28: PetscOptionsGetInt(PETSC_NULL,"-dof",&dof,PETSC_NULL);
29: PetscOptionsGetInt(PETSC_NULL,"-stencil_width",&stencil_width,PETSC_NULL);
30: PetscOptionsGetInt(PETSC_NULL,"-periodic",&pt,PETSC_NULL);
31: periodic = (DAPeriodicType) pt;
32: PetscOptionsGetInt(PETSC_NULL,"-stencil_type",&st,PETSC_NULL);
33: stencil_type = (DAStencilType) st;
35: PetscOptionsHasName(PETSC_NULL,"-1d",&flg2);
36: PetscOptionsHasName(PETSC_NULL,"-2d",&flg2);
37: PetscOptionsHasName(PETSC_NULL,"-3d",&flg3);
38: if (flg2) {
39: DACreate2d(PETSC_COMM_WORLD,periodic,stencil_type,M,N,m,n,dof,stencil_width,0,0,&da);
40: } else if (flg3) {
41: DACreate3d(PETSC_COMM_WORLD,periodic,stencil_type,M,N,P,m,n,p,dof,stencil_width,0,0,0,&da);
42: }
43: else {
44: DACreate1d(PETSC_COMM_WORLD,periodic,M,dof,stencil_width,PETSC_NULL,&da);
45: }
47: DACreateGlobalVector(da,&global1);
48: PetscRandomCreate(PETSC_COMM_WORLD,&rdm);
49: PetscRandomSetFromOptions(rdm);
50: DACreateGlobalVector(da,&global2);
51: DACreateGlobalVector(da,&global3);
52: DACreateGlobalVector(da,&global4);
54: PetscViewerBinaryOpen(PETSC_COMM_WORLD,"temp",FILE_MODE_WRITE,&viewer);
55: VecSetRandom(global1,rdm);
56: VecView(global1,viewer);
57: VecSetRandom(global3,rdm);
58: VecView(global3,viewer);
59: PetscViewerDestroy(viewer);
60:
61: PetscViewerBinaryOpen(PETSC_COMM_WORLD,"temp",FILE_MODE_READ,&viewer);
62: VecLoadIntoVector(viewer,global2);
63: VecLoadIntoVector(viewer,global4);
64: PetscViewerDestroy(viewer);
66: VecAXPY(global2,mone,global1);
67: VecNorm(global2,NORM_MAX,&norm);
68: if (norm != 0.0) {
69: MPI_Comm_size(PETSC_COMM_WORLD,&size);
70: PetscPrintf(PETSC_COMM_WORLD,"Norm of difference %G should be zero\n",norm);
71: PetscPrintf(PETSC_COMM_WORLD," Number of processors %d\n",size);
72: PetscPrintf(PETSC_COMM_WORLD," M,N,P,dof %D %D %D %D\n",M,N,P,dof);
73: PetscPrintf(PETSC_COMM_WORLD," stencil_width %D stencil_type %d periodic %d\n",stencil_width,(int)stencil_type,(int)periodic);
74: PetscPrintf(PETSC_COMM_WORLD," dimension %d\n",1 + (int) flg2 + (int) flg3);
75: }
76: VecAXPY(global4,mone,global3);
77: VecNorm(global4,NORM_MAX,&norm);
78: if (norm != 0.0) {
79: MPI_Comm_size(PETSC_COMM_WORLD,&size);
80: PetscPrintf(PETSC_COMM_WORLD,"Norm of difference %G should be zero\n",norm);
81: PetscPrintf(PETSC_COMM_WORLD," Number of processors %d\n",size);
82: PetscPrintf(PETSC_COMM_WORLD," M,N,P,dof %D %D %D %D\n",M,N,P,dof);
83: PetscPrintf(PETSC_COMM_WORLD," stencil_width %D stencil_type %d periodic %d\n",stencil_width,(int)stencil_type,(int)periodic);
84: PetscPrintf(PETSC_COMM_WORLD," dimension %d\n",1 + (int) flg2 + (int) flg3);
85: }
88: PetscRandomDestroy(rdm);
89: DADestroy(da);
90: VecDestroy(global1);
91: VecDestroy(global2);
92: VecDestroy(global3);
93: VecDestroy(global4);
94: PetscFinalize();
95: return 0;
96: }