Hi guys,
So I am trying to run a 3d application using OPENGL through an EC2 server. The
ultimate goal being to capture the screen using Xvfb.
I installed virtualgl and turbovnc. when I run
/opt/VirtualGL/bin/glxinfo -display :0 -c
I get this
name of display: :0
display: :0 screen: 0
direct rendering: Yes
server glx version string: 1.4 Mesa 9.2.4
server glx extensions:
GLX_ARB_get_proc_address, GLX_EXT_texture_from_pixmap,
GLX_EXT_visual_info, GLX_EXT_visual_rating, GLX_MESA_copy_sub_buffer,
GLX_MESA_pixmap_colormap, GLX_MESA_release_buffers, GLX_SGIX_fbconfig,
GLX_SGIX_pbuffer
client glx version string: 1.4 Mesa 9.2.4
client glx extensions:
GLX_ARB_get_proc_address, GLX_EXT_texture_from_pixmap,
GLX_EXT_visual_info, GLX_EXT_visual_rating, GLX_MESA_copy_sub_buffer,
GLX_MESA_pixmap_colormap, GLX_MESA_release_buffers, GLX_SGIX_fbconfig,
GLX_SGIX_pbuffer
Obviously I don’t want to use Mesa. Do I have to start the X server in any
specific manner to avoid using the MESA software renderer. Did I miss a step.
Thanks for your help guys!
--
Desmond
On Thursday, November 7, 2013 at 10:03 AM, Stealthy wrote:
> Thanks a lot for all the clarification, I’ll definitely spend more time in
> the manual. This is really helpful, I’ll take another stab at it.
>
> Thanks again!
>
> --
> Desmond
>
>
> On Wednesday, November 6, 2013 at 2:56 PM, DRC wrote:
>
> > Yes, you're missing quite a lot. Please read the manual. VirtualGL
> > needs two X servers-- a "3D X server" and a "2D X server." The 3D X
> > server has to be a real X server attached to the GPU. It can be
> > headless, but it can't be virtual. The 2D X server can be a virtual X
> > server, such as VNC or Xvfb.
> >
> > Secondly, the way you launch a 3D application in VGL is by using vglrun,
> > not vglclient. The instructions do not ever even specify calling
> > vglclient directly. vglclient is generally called from vglconnect, but
> > you don't need to ever use either of those unless your 2D X server and
> > 3D X server are on different machines (which they aren't.)
> >
> > I'll summarize the steps you need to take (but please do read the manual.)
> > -- Set up the 3D X server, which should be a "real" X server connected
> > to the GPU. Make sure the GLX extension works by running glxinfo
> > against the 3D X server and verifying that it is not using a software
> > OpenGL renderer (Mesa.)
> > -- Run vglserver_config to give VirtualGL access to the 3D X server
> > (this is only necessary if the 3D X server is running some sort of login
> > manager under the root account, like gdm or xdm. Otherwise, if you are
> > just starting the 3D X server under your user account, then you should
> > already have permission to access it.)
> > -- Start Xvfb (the 2D X server.)
> > -- Set DISPLAY to point to your Xvfb instance.
> > -- vglrun {application}
> >
> >
> > On 11/6/13 4:21 PM, Stealthy wrote:
> > > I am not sure I going through the right steps to enable virtualgl. Post
> > > installation I started the Xvfb server with this command:
> > >
> > > *Xvfb*:0.0 -screen 0 1280x720x24 -ac +extension GLX +render -noreset &
> > >
> > > I then started what I think is virtualgl with this command expecting any
> > > opengl application running after that would use the GPU:
> > >
> > > /opt/VirtualGL/bin/vglclient
> > >
> > > The application still only uses the CPU.
> > >
> > > Am I missing something?
> > >
> > > Thanks for the help btw.
> > > --
> > > Desmond
> > >
> > > On Wednesday, November 6, 2013 at 12:47 PM, DRC wrote:
> > >
> > > > "Trouble initializing VirtualGL with Xvfb" tells me nothing. Please be
> > > > specific as to the error messages you are encountering or what is not
> > > > working as you expect.
> > > >
> > > >
> > > > On 11/6/13 2:16 PM, Stealthy wrote:
> > > > >
> > > > > > Hi guys,
> > > > > >
> > > > > > Hope I can get some help on this one. I have an ec2 instance running
> > > > > > using a GPU cluster. I am capturing the Xvfb virtual screen using
> > > > > > ffmpeg and would like to have my OPENGL enabled application use the
> > > > > > GPU to render. It’s currently rendering everything using the CPU.
> > > > > >
> > > > > > I already installed virtualgl but I’m having some trouble
> > > > > > intializing
> > > > > > virtualgl with Xvfb and ensure the GPU is being used. Anybody could
> > > > > > help on this?
> > > > > >
> > > > > > Thanks in advance
> > > >
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