[Paraview] Remote render / composite settings with MPI pvserver

[Sean Ziegeler]

I don't think it's an MPI issue, or at least not with configuration or 
daemons.  It is an operational computation system with 3072 CPUs that 
runs MPI jobs on a regular basis.  The big question mark is AIX.  I 
guess I could try the exact same configuration and versions on a Linux 
system to see if it makes a difference.

Kent Eschenberg wrote:
> That looks good to me. We do something similar using a 4-node Linux 
> cluster as a server. We use -rc but I don't see how that would be an issue.
> 
> Does your MPI require daemons like mpd? If so and they have not been 
> started node 0 may not see the other nodes.
> 
> Kent
> Pittsburgh Supercomputing Center
> 
> Sean Ziegeler wrote:
>> I'm trying to do remote rendering with client-server, where the server 
>> is running in parallel on AIX.  The problem is that it only renders 
>> the block from the first task, as if the compositing is not 
>> happening.  So, I'm trying to figure out if it's an AIX-related issue 
>> or I'm just doing something dumb with the build or one of the 
>> settings.  So, here's all the relevant info I can think of:
>>
>> Versions: 3.2.1 and CVS (about 1 week old)
>> Build: AIX using VisualAge compiler, cross-compiled using mpCC, 64-bit
>> With: Python 2.5.1, Mesa 7.0.2 w/OSMesa
>> ICE-T: Without
>> Server:
>>     Command: mpirun.lsf pvserver --use-offscreen-rendering
>>        also tried --disable-compositing  (grasping at straws here)
>>     LSF processors: 8
>>     Cleared the DISPLAY env var
>> Client:
>>     Remote Render Threshold: 0 (to force remote rendering)
>>     Disable Ordered Compositing: Tried Off & On
>>     Everything else at defaults as well
>>
>> It happens with any source or data sets, and with any of the filters 
>> I've tried.  If I turn off Remote Rendering (i.e., force client 
>> rendering) things look fine.
>>
>> Then I thought maybe I should try building ICE-T.  I did that with 
>> 3.2.1 and now I just get a black screen, except for the little axis 
>> widget.  I haven't tried with ICE-T and CVS yet.  After that, I'm out 
>> of permutations.
>>
>> Any ideas?
>>
>> Thanks,
>> Sean