[Paraview] paraview & HDF5/XDMF: how to control memory usage?

[Armin Wehrfritz]

Hello,

I know it's a bit off-topic, but since the next generation xdmf 
reader/write was mentioned in here:

Will the new XDMF reader have a "Reload"/"Refresh" functionality?

I'm currently using a workaround suggested by Sebastien [1], which works 
fine.
The topic has also been discussed here [2], with no outcome I believe.

Cheers,
Armin Wehrfritz

[1] http://www.paraview.org/pipermail/paraview/2013-June/028596.html
[2] http://www.paraview.org/pipermail/paraview/2014-January/030299.html


On 06/10/2014 10:36 PM, Jason Fleming wrote:
> Hello
>
> I would also like to that it is great to hear that a next generation
> XDMF reader is in the works for Paraview. I've used XDMF files very
> successfully with Paraview; both manually generated XML to go with
> NetCDF4 as well as HDF5/XML files generated using the XDMF2 API.
>
> The only rough spot I've had with the existing Paraview XDMF reader is
> that it seems to use more and more memory when generating a time series
> animation. If the dataset is large enough, the Paraview process will
> eventually run out of memory. I have an unchanging unstructured mesh
> with nodally centered data and a temporal collection with one XML file
> and one heavy data file containing all time steps.
>
> I can provide a link to full size data files if that helps the
> development/test process.
>
> Cheers
> Jason
>
>
> On Tue, Jun 10, 2014 at 3:05 AM, Favre Jean <jfavre at cscs.ch
> <mailto:jfavre at cscs.ch>> wrote:
>
>
>     Allow me to add my 2 cents to this thread, since Dave talks about a
>     new generation xdmf reader/writer in the making.
>
>     I too use a series of files for each timestep ( one XMF file and one
>     HDF5 file per step), since I have discovered that creating temporal
>     collections does not work correctly if the grid resolution changes
>     over the timesteps. I have a multi-resolution simulation. The grid
>     starts at low res., then the resolution steadily increases. Using a
>     temporal collection in XDMF, the grid resolution of the first grid
>     in the temporal collection is used throughout the full time series.
>     I see my data is read correctly, but is truncated by the lowest
>     resolution bounds.
>
>     I hope this gets fixed with the new reader.
>     TIA.
>
>     -----------------
>     Jean/CSCS
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>
> --
> Dr. Jason G. Fleming
> Chief Engineer, Seahorse Coastal Consulting
> 3103 Mandy Ln
> Morehead City, NC 28557
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