Re: [Flightgear-devel] Shader performance and multiple GPU?

2010-11-01 Thread Torsten Dreyer
Looks like this is a hardware problem. Looking at the kernel log, I found irq 16: nobody cared (try booting with the "irqpoll" option) irq 16 is being used by nvidia and the onboard USB ports. After disabling USB in the BIOS, it seems like everything is running smooth. Because all my control de

Re: [Flightgear-devel] Shader performance and multiple GPU?

2010-11-01 Thread Torsten Dreyer
> This mirrors comments to the OSG mailing list, where people have reported > performance issues with multiple GPUs and screens. There hasn't been much > of a resolution there; some people have the problem, others don't. I've > put together a multi-GPU machine to explore these issues; now I just

Re: [Flightgear-devel] Shader performance and multiple GPU?

2010-11-01 Thread Tim Moore
This mirrors comments to the OSG mailing list, where people have reported performance issues with multiple GPUs and screens. There hasn't been much of a resolution there; some people have the problem, others don't. I've put together a multi-GPU machine to explore these issues; now I just need to bu

[Flightgear-devel] Shader performance and multiple GPU?

2010-11-01 Thread Torsten Dreyer
Hi, as pointed out in other threads, I am currently assembling a machine with five nVidia cards. The machine and the cards are fast enough to render a steady 60fps, synced to vblank. But this is only with shaders disabled. The moment, I enable shaders and 3d- clouds, the frame rate drops to 20f