[petsc-dev] XDMF viewers

[Matthew Knepley]

On Sat, Dec 3, 2011 at 2:39 PM, Jed Brown <jedbrown at mcs.anl.gov> wrote:

> On Sat, Dec 3, 2011 at 14:31, Tim Gallagher <tim.gallagher at gatech.edu>wrote:
>
>> I was looking for the 'PETSc' way of doing it, something that lets you
>> call VecView(vec, viewer) that generates the heavy data and XML file
>> together. If there is not interest in that approach, I can just write the
>> routines to make the XML in the code.
>
>
> I don't know if Matt has that in PyLith, or if they use a less composable
> interface.
>

Yes, you can write several vectors using VecView(), AND you can do
timesteps :)

   Matt


> Binary-appended VTK does work this way. You can write several vectors to a
> file and they are held in memory until you close the file. The
> implementation is memory-scalable in the sense that there are no gathers of
> global state onto one process.
>
> Unfortunately, you cannot write many time steps to the same file, so you
> should usually create a separate file per step. (Lots of vis software likes
> this, so it's not a terrible restriction, although I don't like it.)
>



-- 
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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