[Paraview] Dual-headed output from a single GPU?

[Berk Geveci]

You shouldn't have to do anything special. I am not an OpenMPI expert
so I can't speak to the MPI configurations. When you run pvserver with
MPI, only the first node will listen to the server port. The others
should wait for the first node in an MPI receive call. The fact that
both servers are trying to listen to that port tells me that either
ParaView is not compile with MPI or there is something wrong with the
way you are using mpirun. To verify which one is the case, try mpirun
-np 2 ./pvserver. If they are both trying to grab port 11111, ParaView
is not compiled with MPI. Otherwise, something is wrong with the MPI
line you are using.

Best,
-berk

On Mon, Oct 12, 2009 at 9:00 AM, Paul Melis <paul.melis at sara.nl> wrote:
> Hi,
>
> I'm trying to get paraview to handle rendering on a single GPU with
> dual-monitor outputs. These outputs are run using different X screens on
> the same X server. Using xinerama is not an option as this is a
> preliminary test setup for driving a TPD using nodes that each drive 2
> displays and the mullions can't be handled correctly with xinerama. The
> goal is to run Paraview as described in
> https://visualization.hpc.mil/wiki/Paraview_Tiled-Display_Mode.
>
> The problem I have is to get multiple pvservers to run on the same host.
> I'm basically following the procedure outlined in "Multiple GPUs Per
> Node" on http://www.itk.org/Wiki/Setting_up_a_ParaView_Server. The
> -bynode mpirun line (supported by OpenMPI) works, but it leads to the
> different pvserver processes trying to listen on port 11111:
>
> paulm at sara0143:/scratch/paulm/paraview-3.6.1-Linux-i686/bin$ mpirun
> -bynode -np 1 ./pvserver -display :0.0 : -np 1 ./pvserver -display :0.1
> Listen on port: 11111
> Waiting for client...
> Listen on port: 11111
> ERROR: In
> /home/kitware/ParaView-3.6/ParaView3/Servers/Common/vtkProcessModuleConnectionManager.cxx,
> line 193
> vtkProcessModuleConnectionManager (0x8216f60): Failed to set up server
> socket.
>
> As far as I understand it this port (11111) is the "combined server"
> port that the client connects to, but the connections among different
> pvservers will use different (arbitrary) ports. So it seems two
> pvservers want to play the role of combined server entry point in my
> case. The mpirun line above is very similar to the one shown in the
> Setting_up_a_ParaView_Server wiki page:
>
> mpirun -bynode -np 8 ./pvserver -display :0.0 : -np 8 ./pvserver
> -display :0.1
>
> Is there some information missing on that page that is needed to get
> this specific setup to work? I.e. something in an MPI hosts file?
>
> Thanks in advance,
> Paul
>
>
>
> _______________________________________________
> Powered by www.kitware.com
>
> Visit other Kitware open-source projects at http://www.kitware.com/opensource/opensource.html
>
> Please keep messages on-topic and check the ParaView Wiki at: http://paraview.org/Wiki/ParaView
>
> Follow this link to subscribe/unsubscribe:
> http://www.paraview.org/mailman/listinfo/paraview
>