1 0 KSP Residual norm 65.4954 2 1 KSP Residual norm 2.52931 3 2 KSP Residual norm 0.0688971 4 3 KSP Residual norm 0.00223247 5 4 KSP Residual norm 6.71039e-05 6 5 KSP Residual norm 2.47537e-06 7 6 KSP Residual norm 9.18621e-08 8 7 KSP Residual norm 3.36499e-09 9Number of iterations = 7 10Residual norm 1.0344e-08 11