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