[Dune-devel] [Dune-Commit] [Commit] dune-grid - 545f73a: Start working on a backup restore facility in YaspGrid

[Dominic Kempf]

Dear all,
when I implemented the facility I didnt have any higher goal in mind than
making a currently unavailable feature available within a day or two. So my
implementation is simple and straight-forward. What you, Oli and Martin,
are aiming for are higher goals, that seem out of scope for me.
- Concerning VTK, it seems to me that such functionality is definitely to
be discussed at a higher level. The reason "this way I can look at my
backup in paraview" isnt worth the effort IMO. Using VTKWriter with a
trivial solution (or allowing it to be called without solution) would do
that very same trick. Do you often do that?
- Concerning dgf I have a conflict of interest, to be honest. Nobody here
in Heidelberg uses DGF, so I cannot really put much work into that.  And
having dgf for equidistant grids and a custom format for tensorproduct
grids doesnt seem like a solution either.
If you insist, that those alternatives should be considered before having a
BRF in master (and 2.4 resp.), I can revert it, but I would find it a
rather strange decision.

Have a nice long weekend,
Dominic

On Thu, Oct 2, 2014 at 3:03 PM, Jö Fahlke <jorrit at jorrit.de> wrote:

> Am Thu,  2. Oct 2014, 14:12:17 +0200 schrieb Oliver Sander:
> > >> PS: Just read your next mail: Seems like the first point could hold
> for VTK too,
> > >> if Paraview tries to verify the XML schema. Also, I dont think we
> want an XML
> > >> parser in dune-grid, do we?
> > >
> > > +1. Adding a dune-grid dependency on an XML parser library would
> probably create some
> > > interesting discussions on this list… ;-)
> >
> > Actually I think I do want one.  VTK reading capabilities in Dune would
> be very helpful,
> > but I don't think writing that from scratch is a good idea.  The only
> XML parser library
> > that I am familiar with (tinyxml2
> http://grinninglizard.com/tinyxml2docs/index.html)
> > is so small that we may just copy the whole thing into dune-common (the
> license permits that).
>
> And we probably *will* have to copy it into some dune module to read VTK
> files, since we probably want to be able to read vtk files in
> binaryappended
> format.  To my knowledge, those are not valid XML, since they contain
> unencoded binary blobs.  So unless the parser already has hooks for that,
> you
> will need to patch in support for that...
>
> Regards,
> Jö.
>
>
> --
> Jorrit (Jö) Fahlke, Institute for Computational und Applied Mathematics,
> University of Münster, Orleans-Ring 10, D-48149 Münster
> Tel: +49 251 83 35146 Fax: +49 251 83 32729
>
> If God had intended Man to Smoke, He would have set him on Fire.
> -- fortune
>
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