[petsc-users] understanding snes failure

[Barry Smith]

  Also -snes_linesearch_monitor  can be useful; sometime -ksp_monitor_true_residual and -ksp_converged_reason are useful also


> On May 14, 2015, at 6:15 PM, Matthew Knepley <knepley at gmail.com> wrote:
> 
> -snes_converged_reason
> 
>    Matt
> 
> On Thu, May 14, 2015 at 5:36 PM, Gideon Simpson <gideon.simpson at gmail.com> wrote:
> Is there a way I can get diagnostic information as to why a snes solve failed?  I’ve noticed that it will run for 1 or 2 iterations, and then cease, and, even with -snes_monitor on, I don’t get any information as to why it terminated.
> 
> -gideon
> 
> 
> 
> 
> -- 
> What most experimenters take for granted before they begin their experiments is infinitely more interesting than any results to which their experiments lead.
> -- Norbert Wiener