[petsc-dev] Recover from TS failure

[Mark Adams]

>
>
>
> The last relevant output you've shown me is SNES failing a bunch of
> times as the adaptive controller attempts to shrink the step size and
> retry.  If you fixed that problem, you need to tell me.  If not, THAT is
> the problem you need to fix.
>

That is the problem I am trying to fix. Note, I am also adapting the time
step when the solver converges but talks a lot of iterations. Thus, no need
for recovery.

It is the SNES failure, recover, cut time step, try again, that I am
working in now.


>
> Did you read about -ts_error_if_step_fails on the man page


Google, and found the command line args


> for the
> functional interface I just cited?
>
>
Sorry, I missed this cite and used 'git grep' to see that it was there
(Matt sent me the SNES version today so I knew what to look for).


> >> but all the logic you're talking about is already in TS and
> >> jury-rigging it on the outside is counterproductive.  So get back to
> >> the root of the problem and debug why SNES is failing.
> >>
>
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