Actual source code: ex16.c
2: static char help[] = "Tests VecSetValuesBlocked() on MPI vectors.\n\n";
4: #include petscvec.h
5: #include petscsys.h
9: int main(int argc,char **argv)
10: {
12: PetscMPIInt size,rank;
13: PetscInt i,n = 8,bs = 2,indices[2];
14: PetscScalar values[4];
15: Vec x;
17: PetscInitialize(&argc,&argv,(char*)0,help);
18: MPI_Comm_size(PETSC_COMM_WORLD,&size);
19: MPI_Comm_rank(PETSC_COMM_WORLD,&rank);
21: if (size != 2) SETERRQ(1,"Must be run with two processors");
23: /* create vector */
24: VecCreateMPI(PETSC_COMM_WORLD,PETSC_DECIDE,n,&x);
25: VecSetFromOptions(x);
26: VecSetBlockSize(x,bs);
28: if (!rank) {
29: for (i=0; i<4; i++) values[i] = i+1;
30: indices[0] = 0; indices[1] = 2;
31: VecSetValuesBlocked(x,2,indices,values,INSERT_VALUES);
32: }
33: VecAssemblyBegin(x);
34: VecAssemblyEnd(x);
36: /*
37: Resulting vector should be 1 2 0 0 3 4 0 0
38: */
39: VecView(x,PETSC_VIEWER_STDOUT_WORLD);
41: VecDestroy(x);
43: PetscFinalize();
44: return 0;
45: }
46: