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

Matthew Knepley knepley at gmail.com
Sun Oct 23 16:06:02 CDT 2011


On Sun, Oct 23, 2011 at 9:01 PM, Jed Brown <jedbrown at mcs.anl.gov> wrote:

> On Sun, Oct 23, 2011 at 15:58, Matthew Knepley <knepley at gmail.com> wrote:
>
>> 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.
>>
>
> So you are saying that -ts_exact_final_time should be the default? I don't
> think it should be the only interface because sometimes the user really
> doesn't care because exact times have no significance to them, and it's less
> expensive to not hit an exact time (possibly one less vector too).
>

It seems like there should be a way to divide the discrete and continuum
interfaces. People who
care could go down to the discrete level, but the continuum level would give
what you asked for.

   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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