[Paraview] Setting up Paraview Web on a headless Fedora server with GPU

[Sebastien Jourdain]

You were on the right track with DISPLAY=:0 but I'm wondering if you setup
a "virtual" monitor or if your "paraview" user is auto logged in a X
session or if it stuck at the "login" panel?

You can find some information about the virtual screen here: (Search for
"Screen")

http://kitware.github.io/paraviewweb/docs/guides/graphics_on_ec2_g2.html

And for the autologin if it is needed. (Note on EC2 the user start X hence
no need to login...)

https://github.com/Kitware/paraviewweb/blob/master/tools/ansible/roles/paraview/tasks/Ubuntu.yml

Seb

On Thu, May 5, 2016 at 6:58 AM, Jiří Vyskočil <jiri.vyskocil at fjfi.cvut.cz>
wrote:

> Hello,
>
>
> I'm trying to set up a Paraview Web server on a Fedora 23 machine. The
> serves is not connected to a monitor or a keyboard (I only have access
> through ssh), but it has a nvidia GPU which I want to use for paraview.
>
>
> I have installed xdm to run the X server, and verified that it is in fact
> running with the correct nvidia drivers (by checking the Xorg.0.log file).
> The problem is I don't know how to run the paraview webserver on the X
> display when there's no one physically logged in - I can only get to the
> server via ssh. When I log in, and switch to the paraview user, the DISPLAY
> and XAUTHORITY variables are empty.
>
>
> The webserver itself is running (apache + the python launcher), but when I
> try to open any of the example applications, I get an error like this:
>
>
> $ ./launch-paraview.sh
> 2016-05-05 14:54:17,528:INFO:twisted:Site starting on 9000
> 2016-05-05 14:54:17,528:INFO:twisted:Starting factory
> <twisted.web.server.Site instance at 0x7fe20da6a998>
> 2016-05-05 14:55:09,655:INFO:twisted:"127.0.0.1" - - [05/May/2016:12:55:09
> +0000] "POST /paraview/ HTTP/1.1" 503 78 "
> https://vbl-sim.eli-beams.eu/apps/Visualizer/" "Mozilla/5.0 (X11; Fedora;
> Linux x86_64; rv:45.0) Gecko/20100101 Firefox/45.0"
>
>
> $ cat 965318f2-12c0-11e6-a3cb-002590e6af35.txt
> 2016-05-05 14:55:06+0200 [-] Log opened.
> ERROR: In
> /home/strazce/hax/ParaView-v5.0.0-source/VTK/Rendering/OpenGL/vtkXOpenGLRenderWindow.cxx,
> line 333
> vtkXOpenGLRenderWindow (0x3f00be0): bad X server connection. DISPLAY=
>
>
> Specifying DISPLAY=:0 when running the launcher gives this error:
>
> $ cat e73921bc-12c0-11e6-b002-002590e6af35.txt
> 2016-05-05 14:57:22+0200 [-] Log opened.
> No protocol specified
> No protocol specified
> No protocol specified
> ERROR: In
> /home/strazce/hax/ParaView-v5.0.0-source/VTK/Rendering/OpenGL/vtkXOpenGLRenderWindow.cxx,
> line 333
> vtkXOpenGLRenderWindow (0x4127c10): bad X server connection. DISPLAY=:0.
> Aborting.
>
>
>
> Thanks for any hints,
>
> Jiri
>
>
>
>
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