I just want to check the interpretation of snes_type test. Is this pretty conclusively good?
Testing hand-coded Jacobian, if the ratio is O(1.e-8), the hand-coded Jacobian is probably correct. Run with -snes_test_display to show difference of hand-coded and finite difference Jacobian. Norm of matrix ratio 1.38299e-16, difference 1.11738 (user-defined state) Norm of matrix ratio 9.50529e-09, difference 7.67972e+07 (constant state -1.0) Norm of matrix ratio 1.07438e-08, difference 8.68036e+07 (constant state 1.0)
