Hi Pratik,
you do not need a physical monitor on your servers to use gpu. My
knowledge of X11 is limited, but I think you need to declare a display
in your xorg config, probably so the windowing system can set up buffers
and so on(I welcome correction/clarification on this point). As long as
you have the display resolution on the server set at least as large as
your client's monitor you should not have the problem you experienced.
2500x1600 would be a reasonably safe setting.
Burlen
On 06/30/2011 04:03 AM, pratik wrote:
Burlen,
Thanks a lot for that tip! Yes, that indeed was the problem.
I was just wondering....why does the GPU rendering have to depend on
the monitor at all? Since the GPU cards are doing the processing (at
least as far as i know)...is there any way in which one can remove
this monitor dependency altogether?
Also, if it is not possible to do gpu rendering without a monitor,
then is it impossible to use the gpu's present in a cpu+gpu
cluster(with headless nodes)?
I also tried xvfb, but it seems that it does not use the graphics
cards at all, and i got terrible graphics.
Thanks again,
Pratik
On Wednesday 29 June 2011 09:13 PM, Burlen Loring wrote:
Hi Pratik,
I have had some similar issues when my desktop screen resolution was
higher than the server display resolution. Do you know what the
display resolution is set to on the server side? I was able to check
the server side resolution using xrandr command. The issue was fixed
by increasing the server display resolution in the xorg.conf. This
could be one possibility for what you are seeing.
Burlen
On 06/29/2011 07:42 AM, pratik wrote:
Hi everyone,
This is my configuration(PV v.3.10.1):
Server: desktop with 4 NVIDIA tesla C1060 cards; Client is a laptop.
To make use of GPU rendering, i start an Xserver on a free display
like so(i cannot use the :0 display, also i cannot use $DISPLAY. if
i use the $DISPLAY option, the server disconnects as soon as i load
data from paraview):
startx -- :14
and my .xinitrc contains
exec xdm
so that xdm executes on the Xserver that is started.
once this is done, i simply run
mpirun -np 4 pvserver -display localhost:14.0
OR
pvserver -display localhost:14.0
Everything goes fine, client connects to server etc. But when the
actual visualization is done, a strip at the top (roughly 1/3 of
screen) is blanked(see the attached image). A curious thing that i
observed was that when i change the orientation, rotate the object
etc, the LOD actor seems to render properly(meaning that i can see
the whole picture), but after i let it settle then this clipping
takes place. Only a few weeks back the rendering seemed to have
happened perfectly, so i don't know why it is suddenly behaving this
way now.
Thanks in advance for the help.
-pratik
_______________________________________________
Powered bywww.kitware.com
Visit other Kitware open-source projects
athttp://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
_______________________________________________
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
