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 though. I do think it's time to go talk to NVidia about the set up, they might be able to give you a heads up on what to expect. Robert. On Tue, Oct 28, 2008 at 8:53 PM, Joe Lyga <[EMAIL PROTECTED]> wrote: > Hi again, > > I tried fiddling with OSG_SERIALIZE_DRAW_DISPATCH, but it's not having > any effect. > > Anyway, I was able to duplicate the results I've been getting with my > program by just running osgviewer with a simple 3d arrow model (with > vsync off). (Monitors 1 and 2 are hooked up to the first graphics > card, and monitors 3 and 4 are hooked up to the second graphics card.) > > The first configuration I tried was running osgviewer full screen on > all four monitors. The framerate varies between 30 and 40 fps, and > notice the inconsistent frame markings and large draw time. > <see attached image 1> > > Second, I tried running osgviewer in a window and dragging it across > the first two monitors. The framerate jumps way up to over 1000 fps. > <see attached image 2> > > After that, I moved the same window over to monitors 3 and 4. The > framerate dropped way down to around 45 fps. > <see attached image 3> > > Moving that window back to monitors 1 and 2 made it jump back up to > over 1000 fps. > > After dragging the window over to monitors 3 and 4 again, I went into > display properties and disabled monitors 1 and 2. The framerate of > the window jumped up to over 1000 fps. > <see attached image 4> > > This is very strange. It seems like the second graphics card is > waiting on the first. Shouldn't they be running asynchronously? > > _______________________________________________ > osg-users mailing list > [email protected] > http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org > > _______________________________________________ osg-users mailing list [email protected] http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
