[Paraview] Problem with visualing large Ensight file - please help me.

[Berk Geveci]

Is it possible for you to post this data or a smaller version somewhere? I
need an Ensight file similar to your to experiment. It doesn't have to be
public, just accessible by Kitware.

-berk


On 22 Jan 2008 14:04:17 -0000, Raashid Baig <raashid.b at rediffmail.com>
wrote:
>
> I have a big problem while trying to visualize large multi-block
> Unstructured grid dataset which is in the form of ASCII Ensight files.
> (16 million cells 2.1GB disk usage).
>
> When I start ParaView(3.1.2, complied on a Linux cluster with OpenMPI)
> it starts without any problem, but ParaView fails while trying to load
> this file. pvserver crashes when the memory usage on the headnode of
> the cluster is about 20% to total available memory. Also on all other
> nodes, besides the head node ParaView does not seem to consume any
> memory. I have reported the problem on the ParaView mailing list on
> 15-01-2007.
>
> However when I start the pvserver only on one node, the ParaView loads
> the Ensight file without crashing, since the single node does not
> sufficiently handle this large amount of data, I tried to save the
> loaded data in some other file format using ParaView. But for this
> data set only the option of VTK Multi-Block files is available, on
> saving that I get 1 .vtm file and 11 separate *.vtu files.
>
> Now when I restart the ParaView on 10 nodes and try loading this vtm
> file, it loads properly but all the load(of memory) falls only on the
> headnode of the cluster. If I perform any operation (Velocity glyphs
> for example) all the load again falls only on headnode of the
> cluster, this results in a very slow performance as well as risk of
> crashing the entire cluster for memory expensive operations (like
> isosurfaces).
>
> According the ParaView Wiki:
>
> """Currently there are only a few readers that truly work in parallel:
> VTK files (not legacy), partitioned legacy VTK files, ParaView data
> files, HDF5 files, EnSight master server files, and raw (binary) files
> can be read in parallel."""
>
> Now what can I do with the current situation, there is no Ensight
> Master-Server/HDF5 writer in VTK. Both VTK-XML and VTK-legacy file
> formats don't support the multi-block data and the existing *.vtm file
> does not seem to work properly when ParaView runs in parallel mode.
>
> What can be the possible solution for the existing situations, can VTK
> be of some help ? Or I have to create a new Parallel Reader for
> ParaView.
>
>
>
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