Actual source code: ex137.c
petsc-3.4.2 2013-07-02

      2: static char help[] = "Tests MatCreateMPISBAIJWithArrays().\n\n";

      4: #include <petscmat.h>

      8: int main(int argc,char **args)
      9: {
     10:   Mat            A;
     12:   PetscInt       m = 4, bs = 1,ii[5],jj[7];
     13:   PetscMPIInt    size,rank;
     14:   PetscScalar    aa[7];

     16:   PetscInitialize(&argc,&args,(char*)0,help);
     17:   MPI_Comm_size(PETSC_COMM_WORLD,&size);
     18:   MPI_Comm_rank(PETSC_COMM_WORLD,&rank);
     19:   if (size != 2) SETERRQ(PETSC_COMM_WORLD,PETSC_ERR_SUP,"Only for two processes");

     21:   if (!rank) {
     22:     ii[0] = 0; ii[1] = 2; ii[2] = 5; ii[3] = 7; ii[4] = 7;
     23:     jj[0] = 0; jj[1] = 1; jj[2] = 1; jj[3] = 2; jj[4] = 6; jj[5] = 3; jj[6] = 7;
     24:     aa[0] = 0; aa[1] = 1; aa[2] = 2; aa[3] = 3; aa[4] = 4; aa[5] = 5; aa[6] = 6;
     25:     /*  0 1
     26:           1  2       6
     27:              3          7 */
     28:   } else {
     29:     ii[0] = 0; ii[1] = 2; ii[2] = 4; ii[3] = 6; ii[4] = 7;
     30:     jj[0] = 4; jj[1] = 5; jj[2] = 5; jj[3] = 7; jj[4] = 6; jj[5] = 7; jj[6] = 7;
     31:     aa[0] = 8; aa[1] = 9; aa[2] = 10; aa[3] = 11; aa[4] = 12; aa[5] = 13; aa[6] = 14;
     32:     /*    4  5
     33:              5   7
     34:                6 7
     35:                  7 */
     36:   }
     37:   MatCreateMPISBAIJWithArrays(PETSC_COMM_WORLD,bs,m,m,PETSC_DECIDE,PETSC_DECIDE,ii,jj,aa,&A);
     38:   MatView(A,PETSC_VIEWER_STDOUT_WORLD);
     39:   MatDestroy(&A);
     40:   PetscFinalize();
     41:   return 0;
     42: }