Thanks Jed. I'm not terribly familiar with those mixed implicit/explicit
methods; are they appropriate for fully implicit solutions by just
setting the explicit part to 0? (I realize that's more a math question
than a petsc one)
-Mark
On 04/24/2015 11:20 AM, Jed Brown wrote:
Mark Lohry <[email protected]> writes:
I'd like to use a 3rd+ order BDF with TS, which appears to only have 1st
order (backward euler/TSBEULER), and then the bindings to SUNDIALS.
What about TSARKIMEX, TSROSW, and TSEIMEX? These are really the methods
we recommend.
I'd like to avoid SUNDIALS as it looks like it forces the use of it's
own non-linear solvers.
Yeah.
Am I correct in thinking the preferred way to construct a BDF with TS is
to use TSGL? Are there any examples of TSGL in use? I'm not seeing any
in the docs.
You can use -ts_type gl, but I haven't worked with those methods in a
long time and they have not been robust in practice. I recommend using
ROSW as a default.
