[Paraview] Rendering large datasets using offscreen rendering...

[Renato N. Elias]

Hi Berk,

I'm using Mesa 6.5.3. It's not the latest one because it was the first 
that I got success in compiling on this machine. Regarding GL and GLUT, 
I'm setting everything to Mesa as you can see bellow:

 OPENGL_INCLUDE_DIR               
/sw/shared/x86_64/Mesa/6.5.3/include                                           

 OPENGL_gl_LIBRARY                
/sw/shared/x86_64/Mesa/6.5.3/lib64/libGL.so                                    

 OPENGL_glu_LIBRARY               
/sw/shared/x86_64/Mesa/6.5.3/lib64/libGLU.so                                   

 OPENGL_xmesa_INCLUDE_DIR         
/sw/shared/x86_64/Mesa/6.5.3/include                                           

 OSMESA_INCLUDE_DIR               
/sw/shared/x86_64/Mesa/6.5.3/include                                           

 OSMESA_LIBRARY                   
/sw/shared/x86_64/Mesa/6.5.3/lib64/libOSMesa.so                                


I've been successfully using PV in smaller cases running in 2, 4 and 8 
processors. In fact, It was my first attempt in a larger dataset.

There's something that could explain what is happening. I noted that 
when I load the Xdmf temporal collection the system runs out of memory 
(I've sent another message explaining it). It seems that there's 
something wrong with Xdmf memory allocation. I don't know... just a 
suspicious... . Jerry is taking a look.

Renato.


Berk Geveci wrote:
> What are you using for rendering? The system OpenGL or Mesa? If it is
> Mesa, is it the very latest version? Also, what happens when you try
> something simple on 2 processors? Can you get a stack trace?
>
> -berk
>
> On Tue, Nov 4, 2008 at 11:21 AM, Renato N. Elias <rnelias at nacad.ufrj.br> wrote:
>   
>> Folks, I need some tips for rendering a large dataset using offscreen
>> rendering in a SGI Altix-ICE.
>>
>> Basically, I have a 40 million tetrahedra mesh partitioned in 128 cpus. The
>> result is stored in Xdmf format (15 time steps) and I can successfully load
>> the datasets in ParaView 3.4.0 and do basic things  like plot the result in
>> isosurfaces or colorize the model with a scalar field. The problem begins to
>> happen when I try to change the model opacity. PV takes forever before
>> crashing MPI.
>>
>> I guess that the problem with opacity is due to the compositing order but I
>> can't figure out a way to use it. I already tried to disable ordered
>> compositing but it hasn't helped so much.
>>
>> Any idea would be appreciated. Thanks,
>>
>> Renato.
>> _______________________________________________
>> ParaView mailing list
>> ParaView at paraview.org
>> http://www.paraview.org/mailman/listinfo/paraview
>>
>>     
>
>