Hi Joe,

This sounds like a driver issue.  Could you please try enabling vsync,
as then you will get a better picture of the load balancing in a usage
model that end users should be using.

Robert.

On Wed, Oct 22, 2008 at 5:39 PM, Joe Lyga <[EMAIL PROTECTED]> wrote:
> I'm having an issue with a program that I'm working on that uses OSG.  I
> have a machine running windows vista that has two Geforce 8800 GTX graphics
> cards.  I'm running these cards with SLI disabled so I can hook up 4
> monitors, with 2 on each graphics card.  In display properties, I have
> monitor 1 (hooked up to the first graphics card) set as the primary monitor,
> and the windows desktop extended onto the other 3.
>
> Anyway, when I'm running this program in windowed mode on the first or
> second monitors (which are hooked up to the first graphics card), I'm
> getting a good framerate (around 600 fps) with smooth motion.   If I simply
> drag the window to the third or fourth monitors (which are hooked up to the
> second graphics card), the framerate drops to around 100 fps and the motion
> becomes choppy.  I took some screenshots of the stats on both.  The first
> image is with the program running on monitors connected to the first
> graphics card, and the second is on monitors connected to the second
> graphics card.
>
> One thing I tried was disabling the two monitors hooked up to the first
> graphics card (by setting the windows desktop to not extend onto these two
> monitors).  As a result, trying to run the program running in a window on
> monitors 3 or 4 (hooked up to the second graphics card) gave a good
> framerate without any choppiness.
>
> I've been trying to figure out what's been causing the choppiness with
> running the program on monitors connected to the second graphics card.  Does
> anyone have any experience with running multiple monitors on multiple
> graphics cards?
> _______________________________________________
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>
>
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