[petsc-users] snes linesearch bt vs basic?

Xiangdong epscodes at gmail.com
Mon Feb 1 16:29:59 CST 2016


It seems that TSAdaptChoose_Basic only uses the local truncation error to
predict the next time step. Do you also include the number of snes
iterations in computing the next time step in some adapt option?

Thanks.
Xiangdong

On Mon, Feb 1, 2016 at 4:52 PM, Jed Brown <jed at jedbrown.org> wrote:

> Xiangdong <epscodes at gmail.com> writes:
> > If I want to know how petsc computes the dt_next based on dt_current,
> > namely, dt_next = dt_current*func(snesits, etc), which function/file
> should
> > I look into?
>
> Check out TSAdapt, especially TSAdaptChoose_Basic and TSAdaptCheckStage.
>
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