Julian,<div><br></div><div>I hand wrote my own time stepping scheme (backward Euler) for SNES ex12.c because I had to enforce TAO's convex optimization solvers at every time level. I am sure Matt or one of the other PETSc developers can tell you how to make today's SNES ex12.c transient.</div><div><br></div><div>Thanks,</div><div>Justin<br><br>On Wednesday, July 6, 2016, Julian Andrej <<a href="mailto:juan@tf.uni-kiel.de">juan@tf.uni-kiel.de</a>> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Hi,<br>
<br>
i've seen your question on the mailing list regarding a transient<br>
poisson example using PetscFE and TS. Do you have any working<br>
solution? I'm still confused about what to change from snes ex12 for<br>
example to make it transient.<br>
<br>
I hope you could help me out there :)<br>
<br>
regards<br>
Julian<br>
</blockquote></div>