Coarse grid size 5 by 5
Fine grid size 9 by 9
  0 KSP Residual norm 3.75 
  1 KSP Residual norm 2.012 
  2 KSP Residual norm 1.50872 
  3 KSP Residual norm 1.1351 
  4 KSP Residual norm 0.830821 
  5 KSP Residual norm 0.484623 
  6 KSP Residual norm 0.185757 
  7 KSP Residual norm 0.047784 
  8 KSP Residual norm 0.0148316 
  9 KSP Residual norm 0.00268741 
 10 KSP Residual norm < 1.e-11
Number of iterations = 10
