1 0 KSP Residual norm 1.276932087292e+01 2 1 KSP Residual norm 1.377074364931e-02 3 2 KSP Residual norm 1.323317365061e-02 4 3 KSP Residual norm 2.473696764537e-03 5 4 KSP Residual norm 1.601700195506e-05 6