VMD-L Mailing List
From: John Stone (johns_at_ks.uiuc.edu)
Date: Fri Nov 18 2011 - 11:18:44 CST
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Lam,
Okay, I see one thing that may explain the memory use issue you're
having:
On Thu, Nov 17, 2011 at 12:20:41PM -0800, lam nguyen wrote:
[...]
> Info) OpenGL renderer: Quadro FX 580/PCI/SSE2
> Info) Features: STENCIL MSAA(16) MDE CVA MTX NPOT PP PS GLSL(OVF)
The MSAA(16) indicates that your display driver is using 16 antialiasing
samples per pixel in the VMD OpenGL window. This is 4 times higher than is
normally used, and for each sample more GPU memory is used...
I would suggest that you try force-disabling multisample antialiasing
on your GPU and see if the memory usage is significantly decreased.
You should be able to do this using a command like the ones at the
top of this NVIDIA documentation page:
http://us.download.nvidia.com/XFree86/Linux-x86_64/285.05.09/README/openglenvvariables.html
Try this:
nvidia-settings --assign FSAA=0 --assign FSAAAppControlled=0 --assign FSAAAppEnhanced=0
If you set that and then re-run VMD, how does it affect your GPU memory use?
To revert to your previous antialiasing setting, do this:
nvidia-settings --assign FSAA=5 --assign FSAAAppControlled=1 --assign FSAAAppEnhanced=0
To set it for something that's a potential compromise, try this:
nvidia-settings --assign FSAA=5 --assign FSAAAppControlled=0 --assign FSAAAppEnhanced=1
Cheers,
John Stone
vmd_at_ks.uiuc.edu
-- NIH Resource for Macromolecular Modeling and Bioinformatics Beckman Institute for Advanced Science and Technology University of Illinois, 405 N. Mathews Ave, Urbana, IL 61801 http://www.ks.uiuc.edu/~johns/ Phone: 217-244-3349 http://www.ks.uiuc.edu/Research/vmd/ Fax: 217-244-6078
- Next message: John Stone: "Re: Installation problems with VMD 1.9"
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- In reply to: lam nguyen: "Re: VMD slows down at multiple windows"
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- Reply: lam nguyen: "Re: VMD slows down at multiple windows"
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