[Paraview] Paraview on a tiled display

[Moreland, Kenneth]

This is just speculation, but it could be an issue with multiple processes opening windows on the same graphics card.  My guess is that a non display process is drawing a window in front of the display process.

I often run multiple processes on each node in our visualization cluster for desktop delivery.  I get around the problem of X windows on top of each other by using the --use-offscreen-rendering flag.  I don't know how that flag will behave in tile display mode.  Ideally, it will make all the rendering windows offscreen except for the display windows.  If you have to make changes to ParaView to get that to work, it seems reasonable to push those back into ParaView proper.

-Ken


On 2/3/09 11:59 AM, "Camilo Marin" <igetmyjunkmailhere at gmail.com> wrote:

Hi all,

Thank you very much for the tip on running mpi with --bynode option. We are nearer from a solution but it still bugging us.

The command is:

mpirun -bynode -np 24 --mca btl ^openib,udapl --mca btl_tcp_if_exclude lo --hostfile /home/imagine/ParaView/hosts /bin/env DISPLAY=:0 ~/OpenFOAM/ThirdParty/ParaView3.3-cvs/platforms/linux64Gcc/bin/pvserver --server-port=1100 -tdx=3 -tdy=2

Now, when we launch paraview the model is correctly positioned but not all the tiles show up. We have made several tests and it seems to be a random process as it turns some tiles on and off without reason. By the way we are using OpenMPI just as you said guys. This issue could be an OpenMPI problem or its a local cluster one? Could it be a problem when connecting paraview to the server? Even sometimes one of the cluster's machine stop responding which blocks paraview.

I have uploaded some screenshots pointing out the problem. The first image corresponds to a paraview run which only shows on 2 screens. The second one runs the same configuration as above but this time shows only on one screen. The last image corresponds when paraview blocks due to an unkonw (for the moment) network problem.







   ****      Kenneth Moreland
    ***      Sandia National Laboratories
***********
*** *** ***  email: kmorel at sandia.gov
**  ***  **  phone: (505) 844-8919
    ***      web:   http://www.cs.unm.edu/~kmorel

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