[Paraview] Xdmf versus XML image data reader

[Dominik Szczerba]

Here some numbers.

Data generated as

source = vtkImageSinusoidSource()
source.SetWholeExtent(0,512,0,512,0,512)
source.Update()

is saved as: VTI uncompressed, VTI compressed, XDMF. The sizes on disk
are, respecitvely 1080046108,105356654 and 1080047720 (h5 part). The
files are then read back. It takes about 1s, 4s and *100s*
respectively. Writing seems reasonable, but there is clearly a serious
issue with the Xdmf reader, because if I read the data in the h5 file
using python tables it takes about 4s.

I will be glad to hear any suggestions how to locate the problem.

Regards,
Dominik



On Thu, May 26, 2011 at 1:32 PM, Dominik Szczerba <dominik at itis.ethz.ch> wrote:
> Hi,
>
> I have found experimentally that the same image data takes much longer
> to read and write using XdmfReader/Writer as compared to
> XMLImageDataReader/Writer.
> Does anyone have similar findings? What could be the reason?
>
> PS. I am on Ubuntu 10.10 and 11.04 both 64 bits, Xdmf as of git, vtk
> 5.6.1 ParaView 3.10.1 and 3.11, serial hdf5 1.8.4.
>
> Regards
> Dominik
>