Actual source code: ex133.c


  2: static char help[] = "Test saving SeqSBAIJ matrix that is missing diagonal entries.";

  4: #include <petscmat.h>

  6: int main(int argc,char **args)
  7: {
  8:   Mat            A;
  9:   PetscInt       bs=3,m=4,i,j,val = 10,row[2],col[3],rstart;
 10:   PetscMPIInt    size;
 11:   PetscScalar    x[6][9];

 13:   PetscInitialize(&argc,&args,(char*)0,help);
 14:   MPI_Comm_size(PETSC_COMM_WORLD,&size);
 16:   MatCreateSeqSBAIJ(PETSC_COMM_SELF,bs,m*bs,m*bs,1,NULL,&A);
 17:   MatSetOption(A,MAT_IGNORE_LOWER_TRIANGULAR,PETSC_TRUE);
 18:   rstart = 0;

 20:   row[0] =rstart+0;  row[1] =rstart+2;
 21:   col[0] =rstart+0;  col[1] =rstart+1;  col[2] =rstart+3;
 22:   for (i=0; i<6; i++) {
 23:     for (j =0; j< 9; j++) x[i][j] = (PetscScalar)val++;
 24:   }
 25:   MatSetValuesBlocked(A,2,row,3,col,&x[0][0],INSERT_VALUES);
 26:   MatAssemblyBegin(A,MAT_FINAL_ASSEMBLY);
 27:   MatAssemblyEnd(A,MAT_FINAL_ASSEMBLY);
 28:   MatView(A,PETSC_VIEWER_BINARY_WORLD);

 30:   MatDestroy(&A);
 31:   PetscFinalize();
 32:   return 0;
 33: }