Actual source code: ex7.c
1: /*$Id: ex7.c,v 1.17 2001/04/10 19:37:18 bsmith Exp $*/
3: static char help[] = "Demonstrates constructing an application ordering.nn";
5: #include petscao.h
7: int main(int argc,char **argv)
8: {
9: int n = 5,ierr,rank,size;
10: IS ispetsc,isapp;
11: AO ao;
13: PetscInitialize(&argc,&argv,(char*)0,help);
14: PetscOptionsGetInt(PETSC_NULL,"-n",&n,PETSC_NULL);
15: MPI_Comm_rank(PETSC_COMM_WORLD,&rank);
16: MPI_Comm_size(PETSC_COMM_WORLD,&size);
18: /* create the index sets */
19: ISCreateStride(PETSC_COMM_WORLD,n,rank,size,&ispetsc);
20: ISCreateStride(PETSC_COMM_WORLD,n,n*rank,1,&isapp);
22: /* create the application ordering */
23: AOCreateBasicIS(isapp,ispetsc,&ao);
26: AOView(ao,PETSC_VIEWER_STDOUT_WORLD);
28: ISView(ispetsc,PETSC_VIEWER_STDOUT_WORLD);
29: ISView(isapp,PETSC_VIEWER_STDOUT_WORLD);
30: AOPetscToApplicationIS(ao,ispetsc);
31: ISView(isapp,PETSC_VIEWER_STDOUT_WORLD);
32: ISView(ispetsc,PETSC_VIEWER_STDOUT_WORLD);
35: ISDestroy(ispetsc);
36: ISDestroy(isapp);
38: AODestroy(ao);
39: PetscFinalize();
40: return 0;
41: }
42: