1Fine grid size 9 by 9 2 0 KSP Residual norm 10.0656 3 1 KSP Residual norm 4.35349 4 2 KSP Residual norm 0.638099 5 3 KSP Residual norm 0.0815887 6 4 KSP Residual norm 0.00953547 7 5 KSP Residual norm 0.00117851 8 6 KSP Residual norm 0.000265924 9 7 KSP Residual norm 2.74224e-05 10Number of iterations = 7 11 0 KSP Residual norm 10.0656 12 1 KSP Residual norm 4.35349 13 2 KSP Residual norm 0.638099 14 3 KSP Residual norm 0.0815887 15 4 KSP Residual norm 0.00953547 16 5 KSP Residual norm 0.00117851 17 6 KSP Residual norm 0.000265924 18 7 KSP Residual norm 2.74224e-05 19