[petsc-users] TaoSetVariableBounds in petsc4py

[Matthew Knepley]

On Thu, Sep 17, 2015 at 3:55 PM, Justin Chang <jychang48 at gmail.com> wrote:

> Hi all,
>
> I am attempting to use TaoSetVariableBounds via petsc4py. Is there a way
> to set only lower bounds or upper bounds and not both? In PETSc I could
> replace one of the Vecs with NULL, but how would I do that with
> tao.setVariableBounds(...)?
>
> It seems right now I can only do tao.setVariableBounds(lb_vec,ub_vec), and
> from inspection of the python source code, it seems I have to specify both?
>

Can you jsut give None?

  Matt


> Thanks,
> Justin
>



-- 
What most experimenters take for granted before they begin their
experiments is infinitely more interesting than any results to which their
experiments lead.
-- Norbert Wiener
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