Hi Robert,
Problem solved! It appears that this was either a Vista issue, an
Nvidia Vista driver issue, or a combination of both. I managed to get
an XP installation running using an extra internal hard drive on the 4
monitor system. With osgviewer on 4 monitors I'm getting nearly 500
fps with
Hi Joe,
This has to be driver/OS issue, and all you'll be doing on the OSG
side is characterising this problem, you won't find a magic fix on the
OSG side that will fix this.
The only thing left that you could try is to implement the swap groups
extensions in osgViewer. This is just a long shot
Hi Joe,
Just looking at the two images, it really looks like you running two
separate viewers. Is this right? Is it even two separate
applications?
The OSG allows you to run a single viewer across multiple contexts and
this is the usual way that OSG users will do multi-monitors. Is there
a
Hi Joe,
OK this screenshot makes more sense... and is indeed how one would
typically drive multiple monitors with the OSG.
One optimization that is worth doing with this type of setup is use
one graphics context per graphics card, and split the each window
across two displays. This typically
Hi Joe,
I don't personally have any vista machines so I can't test this, or
vouche for how well multiple graphics cards will work under Vista,
others have got it work, but I don't know whether this includes frame
drops. From your description it does sound like a driver issue.
Perhaps use the
Joe,
Just out of interest, do you get the same issue with just one monitor
connected to each graphics card? ( I'm interested because I _think_ I get
something similar in this configuration, but it might be a separate issue).
I have the same setup as you (dual 8800, VIsta, etc.)
Are you running
Yes, with one monitor hooked up to each graphics card I'm still getting the
same effect. The same goes with one monitor hooked up to the first and two
on the second. However, if I only have monitors hooked up to the second
graphics card, then the performance is as good as when I'm running it on
Hi Robert,
I'll look into the Nvidia swap groups extensions. Unfortunately, I'm stuck
with Vista since it is a custom machine under warranty. I'll try loading up
a linux live cd to see if I can produce similar results with osg-viewer.
___
osg-users
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
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