Dear Developers,<br><br>I've finished programming with SNES. But when I run, SNES just do one Nonlinear iteration and comes out !!!<br>I check that the residual evaluation is correct BUT the linear solver may not work while the number of linear iteration is "0". I also check that the jacobian routine is called during process but I don't know how to check the jacobian and preconditioner in SNES to ensure the correct values.<br>
<br>Here I want to know what procedure I should do and where is the beginning point for debugging with SNES?<br><br>Thanks a lot,<br>BehZad<br>