"Constantinescu, Emil M." <[email protected]> writes: > On 1/19/20 11:38 AM, Mark Adams wrote: > Can you recommend a higher order method that I might try? > > > Mark, all of 2e, 3, 4, 5 are high order with really good properties. They > have error estimators that are cheaper but less reliable (most of the time > work well enough).
BDF2 may also be a good choice. Unless I'm misreading the logs, it seems to allege that SNES convergence is problematic before time discretization error. Mark, it would help to know more about the dominant modes in the system.
