Actual source code: ex7.c
2: static char help[] = "Demonstrates constructing an application ordering.\n\n";
4: #include petscao.h
8: int main(int argc,char **argv)
9: {
10: PetscInt n = 5;
12: PetscMPIInt rank,size;
13: IS ispetsc,isapp;
14: AO ao;
16: PetscInitialize(&argc,&argv,(char*)0,help);
17: PetscOptionsGetInt(PETSC_NULL,"-n",&n,PETSC_NULL);
18: MPI_Comm_rank(PETSC_COMM_WORLD,&rank);
19: MPI_Comm_size(PETSC_COMM_WORLD,&size);
21: /* create the index sets */
22: ISCreateStride(PETSC_COMM_WORLD,n,rank,size,&ispetsc);
23: ISCreateStride(PETSC_COMM_WORLD,n,n*rank,1,&isapp);
25: /* create the application ordering */
26: AOCreateBasicIS(isapp,ispetsc,&ao);
29: AOView(ao,PETSC_VIEWER_STDOUT_WORLD);
31: ISView(ispetsc,PETSC_VIEWER_STDOUT_WORLD);
32: ISView(isapp,PETSC_VIEWER_STDOUT_WORLD);
33: AOPetscToApplicationIS(ao,ispetsc);
34: ISView(isapp,PETSC_VIEWER_STDOUT_WORLD);
35: ISView(ispetsc,PETSC_VIEWER_STDOUT_WORLD);
38: ISDestroy(ispetsc);
39: ISDestroy(isapp);
41: AODestroy(ao);
42: PetscFinalize();
43: return 0;
44: }
45: