2010/9/29 Николай Кутузов <kutuzovnp at gmail.com>: > > i've tried to run rober.py with ts.setIJacobian line skipped, and with --( > python rober2.py -snes_mf ) > got the following --- You must have also commented out ts.setIFunction. I just ran this example without ts.setIJacobian and with -snes_mf. Jed