Actual source code: ex137.c
petsc-3.13.6 2020-09-29
2: static char help[] = "Tests MatCreateMPISBAIJWithArrays().\n\n";
4: #include <petscmat.h>
6: int main(int argc,char **args)
7: {
8: Mat A;
10: PetscInt m = 4, bs = 1,ii[5],jj[7];
11: PetscMPIInt size,rank;
12: PetscScalar aa[7];
14: PetscInitialize(&argc,&args,(char*)0,help);if (ierr) return ierr;
15: MPI_Comm_size(PETSC_COMM_WORLD,&size);
16: MPI_Comm_rank(PETSC_COMM_WORLD,&rank);
17: if (size != 2) SETERRQ(PETSC_COMM_WORLD,PETSC_ERR_SUP,"Only for two processes");
19: if (!rank) {
20: ii[0] = 0; ii[1] = 2; ii[2] = 5; ii[3] = 7; ii[4] = 7;
21: jj[0] = 0; jj[1] = 1; jj[2] = 1; jj[3] = 2; jj[4] = 6; jj[5] = 3; jj[6] = 7;
22: aa[0] = 0; aa[1] = 1; aa[2] = 2; aa[3] = 3; aa[4] = 4; aa[5] = 5; aa[6] = 6;
23: /* 0 1
24: 1 2 6
25: 3 7 */
26: } else {
27: ii[0] = 0; ii[1] = 2; ii[2] = 4; ii[3] = 6; ii[4] = 7;
28: jj[0] = 4; jj[1] = 5; jj[2] = 5; jj[3] = 7; jj[4] = 6; jj[5] = 7; jj[6] = 7;
29: aa[0] = 8; aa[1] = 9; aa[2] = 10; aa[3] = 11; aa[4] = 12; aa[5] = 13; aa[6] = 14;
30: /* 4 5
31: 5 7
32: 6 7
33: 7 */
34: }
35: MatCreateMPISBAIJWithArrays(PETSC_COMM_WORLD,bs,m,m,PETSC_DECIDE,PETSC_DECIDE,ii,jj,aa,&A);
36: MatView(A,PETSC_VIEWER_STDOUT_WORLD);
37: MatDestroy(&A);
38: PetscFinalize();
39: return ierr;
40: }
43: /*TEST
45: test:
46: nsize: 2
48: TEST*/