[Paraview] Three Wall Stereo Projection with Paraview 3.6.1

Wed Oct 21 12:19:19 EDT 2009

> Note first, that to the best of my knowledge ParaView3 is _still_
> missing the ability to have independent cameras. That is why berk
> asked about flat/tiled display. On a tile display the cameras are all
> more or less pointed in the same direction. In a cave you want the
> cameras to point in different directions.

Yes. We stopped supporting tiles that are not parallel when we moved
from 2 to 3. We can add it back but it would take a few weeks of
effort.

-berk

On Wed, Oct 21, 2009 at 12:02 PM, David E DeMarle
<dave.demarle at kitware.com> wrote:
> Responses inline.
>
> Note first, that to the best of my knowledge ParaView3 is _still_
> missing the ability to have independent cameras. That is why berk
> asked about flat/tiled display. On a tile display the cameras are all
> more or less pointed in the same direction. In a cave you want the
> cameras to point in different directions.
>
> On Mon, Oct 19, 2009 at 12:08 PM, Steffen Kaufmann
> <Steffen.Kaufmann at haw-hamburg.de> wrote:
>> Hi Berk,
>>
>> I read through the wiki, but I do not understand how it works. How is the
>> workflow / buildup? Let me try to illustrate our hardware buildup and my
>> understanding.
>>
>
> You may also want to look at the slides from the paraview tutorial at
> IEEE Cluster Computing 2009. They are on the paraview wiki too.
>
>> We have 3 render server, with 2 graphic outputs on one graphic card (for the
>> passive stereo projection). The machines have ubuntu/debian linux installed.
>> The projection walls are plain, we have two walls and a bottom (two
>> projectors per projection target - 6 overall).
>>
>
> First make sure you have mpi running on the linux machines. Once you
> do that you should be able to run distributed parallel programs like
> so:
>
> mpirun -np N -machinefile filewithmachinenames.txt program
>
> /bin/uname -a is a good program to try first.
> if that doesn't work, google for an mpi helloworld program that spits
> out each processors rank.
>
> Next build paraview (at least it's server component - the Qt GUI is
> not needed) on the linux machines. Ideally, build it on a shared file
> system where all three machines can see and run the same executable
> file. You need to build the server yourself because the binaries
> (other than mac) do not have MPI enabled. Once you build it run the
> server via:
>
> mpirun -np 3 -machinefile filewithmachinenames.txt pvserver
> You should get one "waiting for client...." message back which
> indicates that all three processes are operating as one program.
>
>> On the controlling PC is Windows XP installed.
>>
>
> A windows client controlling a linux server is perfectly fine. You can
> even use a binary as long as the revision (3.6.1) matches that of the
> server you've built.
>
>> What I want is to control with the Windows XP - PC the contend which is
>> displayed in our 3 wall cave. How do I have to start paraview?
>>
>
> Start paraview, click connect, enter in the ip address of the first
> server machine. Use manual connection mode because you have already
> started the server.
>
>> I know I have to setup a machine file and server configuration file? But I
>> don't know how...
>
> machine file is just the list of machine names. It is how mpirun knows
> where to spawn processes.
> On our cluster, it is simply:
> amber1
> amber2
> amber3
> amber4
> ...
> amber7
>
> Server config file is most often set up automatically via the paraview
> client when you hit connect. As long as you can ping from the XP
> machine to the client, you probably don't have to worry about it.
>
>>
>> How is the command for the pvserver start? I read about:
>> mpirun -np [NUMBER OF CORES] ./pvserver -m [MACHINE FILE]
>> --use-offscreen-rendering -tdx=3 -tdy=1
>
> Sounds correct to me.
>
>>
>> As I understand it starts a pvserver on one Machine, but I need 3 render
>> servers? How can I start the other servers? How is the paraview application
>> started? And how can I connect to the servers?
>
> pvserver is an MPI program. Think of it as one program that spans
> across several machines (one process per machine ussually). Once you
> build paraview with MPI enabled, the task of starting up the parallel
> program is up to mpirun. After you start the server, you connect the
> client program to it simply by clicking connect and defining the host
> name and port to connect to.
>
>>
>> Sorry for the many questions.
>>
>> Thanks!
>>
>> Steffen
>>
>> -----Ursprüngliche Nachricht-----
>> Von: Berk Geveci [mailto:berk.geveci at kitware.com]
>> Gesendet: Montag, 19. Oktober 2009 15:31
>> An: Kaufmann Steffen
>> Cc: paraview at paraview.org
>> Betreff: Re: [Paraview] Three Wall Stereo Projection with Paraview 3.6.1
>>
>> Hi Steffen,
>>
>> First and foremost, you need to run pvserver using MPI. Take a look here:
>> http://paraview.org/Wiki/Setting_up_a_ParaView_Server
>>
>> I am not sure how your tiled display is setup. If you have one machine
>> driving each display, you have to make sure that MPI distributed
>> ParaView with one process per machine. If you have one machine with 3
>> graphics output driving the whole thing, you have to run all processes
>> on that machine but each process will have a different DISPLAY set.
>>
>> Once this is working, you should be able to run ParaView in
>> client/server mode and see the windows on the tiled-display.
>>
>> After that, you will have to use the tiled-display arguments when
>> running pvserver. I believe it will be -tdx=3 -tdy=1 in your case.
>>
>> -berk
>>
>> On Sun, Oct 18, 2009 at 5:39 PM, Steffen Kaufmann
>> <Steffen.Kaufmann at haw-hamburg.de> wrote:
>>> Hello Berk,
>>>
>>>
>>>
>>> we use flat walls. How can I used the tiled-display support?
>>>
>>>
>>>
>>> Is there a possibility to run more than one render server with one data
>>> source? If yes how can this be archived?
>>>
>>>
>>>
>>> Thanks
>>>
>>>
>>>
>>> Steffen
>>>
>>>
>>>
>>> Von: Berk Geveci [mailto:berk.geveci at kitware.com]
>>> Gesendet: Montag, 12. Oktober 2009 19:42
>>> An: Kaufmann Steffen
>>> Cc: paraview at paraview.org
>>> Betreff: Re: [Paraview] Three Wall Stereo Projection with Paraview 3.6.1
>>>
>>>
>>>
>>> Is this a flat wall or curved wall? There is still no Cave support in
>>> ParaView but there is definitely tiled-display support.
>>>
>>> -berk
>>>
>>> On Mon, Oct 12, 2009 at 11:33 AM, Steffen Kaufmann
>>> <Steffen.Kaufmann at haw-hamburg.de> wrote:
>>>> Hello list,
>>>>
>>>> I am from the University of Applied Sciences Hamburg and new to the list.
>>>> We
>>>> have a three wall stereo projection environment and we want to display
>> CFD
>>>> contend with ParaView 3.6.1.
>>>>
>>>> I read that ParaView 3 didn't supported CAVE environments in early phases
>>>> of
>>>> Version 3. Is this problem already solved?
>>>>
>>>> If not can anyone point me out a solution? If yes can anyone give me step
>>>> by
>>>> step instructions?
>>>>
>>>> Thank you!
>>>>
>>>> Steffen
>>>>
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>>
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>>
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