[petsc-users] SNES failed with reason -3

Jed Brown jed at jedbrown.org
Wed Apr 16 10:05:31 CDT 2014

Que Cat <quecat001 at gmail.com> writes:

> Dear Petsc-Users,
> I call the nonliner solver snes in my code and it said that "SNES Failed!
> Reason -3". I testes with "-pc_type lu" and it passed. I have checked the
> hand-coded Jacobian, ant it looks fine. Could you suggest any possible
> sources of the errors?

Run with -snes_converged_reason -ksp_converged_reason -ksp_monitor_true_residual -snes_view and send the output.
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