[petsc-dev] TSSolve() shouldn't return a time

[Matthew Knepley]

On Sun, Oct 23, 2011 at 8:54 PM, Jed Brown <jedbrown at mcs.anl.gov> wrote:

> On Sun, Oct 23, 2011 at 15:46, Matthew Knepley <knepley at gmail.com> wrote:
>
>> This seems like a confusion between the continuum level and the discrete
>> level.
>>
>
> The TS interface takes a _semidiscrete_ form. It is responsible for the
> discretization in time and it is convenient for the user to think about the
> problem as continuous in time. This is why it probably makes sense to have
> library support for an "exact final time".
>

I am fine if you say that the interface is at the continuum level, but then
the user should not be getting back
output that depends on the discretization.

   Matt

-- 
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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