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[solved] PC with Xeon (no GPU) and Nvidia 2 opengl options
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archenroot
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PostPosted: Fri Mar 09, 2018 12:16 pm    Post subject: [solved] PC with Xeon (no GPU) and Nvidia 2 opengl options Reply with quote

I installed my new workstation with xeon and nvidia card, so there is no GPU integrated in CPU, only PCIe Nvidia 1080 TI. I use Kde latest from poly-c and all works smoothly, I just wander why I have 2 options in eselect opengl:
Code:
venus ~ # eselect opengl list
Available OpenGL implementations:
  [1]   nvidia
  [2]   xorg-x11 *


when I run glxgears I get quite high performance:
Code:
zangetsu@venus ~/mount $ vblank_mode=0 glxgears
ATTENTION: default value of option vblank_mode overridden by environment.
7286 frames in 5.0 seconds = 1457.058 FPS
7372 frames in 5.0 seconds = 1474.331 FPS


So, question is do I need to even switch to nvidia by eselect as nvidia is anyway used by default as there is not other gpu in my system? Or should there be only single option then in eselect?

NOTICED ONE ISSUE: When enable 3d mode in VirtualBox (for windows guest machine), the system doesn't boot, showing in VirtualBox just grey window... maybe it is related to this eselect?

Thanks for hints.
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Last edited by archenroot on Sun Mar 11, 2018 7:04 pm; edited 1 time in total
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blopsalot
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PostPosted: Fri Mar 09, 2018 12:50 pm    Post subject: Reply with quote

yes, nvidia is much faster.

780ti
Code:

# __GL_SYNC_TO_VBLANK=0 glxgears
109095 frames in 5.0 seconds = 21818.869 FPS
111007 frames in 5.0 seconds = 22201.268 FPS
94827 frames in 5.0 seconds = 18965.375 FPS
109573 frames in 5.0 seconds = 21914.455 FPS
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archenroot
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PostPosted: Fri Mar 09, 2018 5:42 pm    Post subject: Reply with quote

mhmmm, thanks for providing the numbers, I will reconfigure, so that could be also the reason why 3d acceleration results in grey window in virtualbox. Thx again, I will check tomorrow and report result.

Actually I expected nvidia will work out of the box if no other device is available on the system...

Ladislav
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Last edited by archenroot on Fri Mar 09, 2018 6:00 pm; edited 1 time in total
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archenroot
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Location: Lake Macha, Czech republic

PostPosted: Sun Mar 11, 2018 7:03 pm    Post subject: Reply with quote

ok, enabling nvidia by eselect and generating nvidia.conf file under /etc/X11... fixed my concern -> getting now between 24-30 000 FPS.

Thx for confirmation.
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