<P>
I am a newbie to parallel visualization and ParaView in general, I<BR>
have some doubts which are very fundamental. <BR>
<BR>
I am using ParaView2.6.X and trying to do some performance analysis<BR>
and dataset limit of ParaView in general as a part of an academic<BR>
project. I want to see what are the gains in CPU & memory usage and<BR>
time required to render a particular dataset when ParaView is run in<BR>
parallel.<BR>
<BR>
I have structured data-sets with point attributes in form of VTK<BR>
legacy files. When I run paraview in stand-alone mode on a single<BR>
machine, I am able to draw 5 iso-surface for structured grid datasets<BR>
upto 5 million points. But when I put the same VTK legacy files on 3<BR>
different computers (all have ParaView 2.6.X installed, os is Ubuntu/Debian) and run ParaView through mpi in distributed stand alone mode (as described in the ParaView book) on these 3 machines, the performance decreases for the isosurface case. Not only does the time taken to render final image, cpu/memory usage increase, I am only able to visualize till 1 million grid points. After 1 million point the get an error (this particular error is for a dataset of 2 million) :<BR>
<BR>
raashid@ged:~/src/cvs/paraview-unix/bin$ mpirun -np 3 -x DISPLAY=10.101.11.71:0.0 ./paraview<BR>
ErrorMessage<BR>
# Error or warning: There was a VTK Error in file: /home/raashid/src/cvs/ParaView/VTK/Common/vtkDataArrayTemplate.txx (266)<BR>
vtkIdTypeArray (0xe041768): Unable to allocate 59135376 elements of size 4 bytes.<BR>
ErrorMessage end<BR>
-----------------------------------------------------------------------------<BR>
One of the processes started by mpirun has exited with a nonzero exit<BR>
code. This typically indicates that the process finished in error.<BR>
If your process did not finish in error, be sure to include a "return<BR>
0" or "exit(0)" in your C code before exiting the application.<BR>
<BR>
PID 16283 failed on node n0 (10.101.11.71) due to signal 11.<BR>
-----------------------------------------------------------------------------<BR>
<BR>
Am I using the wrong file type, if yes what should I use ? <BR>
Is there some threshold limit I am voilating ?<BR>
<BR>
I get the same error as above if I use a D3 filter before applying the<BR>
iso-contour.<BR>
<BR>
Please help me with this problem, because I am in serious trouble.<BR>
<BR>
<BR>
</P>
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