We are testing the new Cisco C240 rack server equipped with two Nvidia grid K1 cards (however we will only use one card later).
I’ve got X up and running, however it seems like I only use one gpu (looking at nvidia-smi, I will only see utilization on one gpu).
I thought that with the option, Option “MultiGPU” “Auto” in my xorg.conf, that the nvidia driver would make it possible to utilize all the available gpu’s ? Starting X with that option throws the following error though, which makes me think that something isn’t right,
(EE) NVIDIA(0): Failed to find a valid Multi-GPU configuration.
(WW) NVIDIA(0): Failed to find a valid Multi-GPU configuration for the NVIDIA
(WW) NVIDIA(0): graphics device PCI:9:0:0. Please see Chapter 28:
(WW) NVIDIA(0): Configuring SLI and Multi-GPU FrameRendering in the README
(WW) NVIDIA(0): for troubleshooting suggestions.
(EE) NVIDIA(0): Only one GPU will be used for this X screen.
I’m able to utilize all gpu-power if I’m using a xorg.conf that has all gpu’s defined as separate x screens, and then when invoking my command (eg. heaven benchmark / glxgears / etc…) I specify the display to run on. Then I will see utilization on the gpu’s that I’ve actually started the benchmarks/commands on. And I guess that’s fine, I just thought that I wouldn’t need to manually specify which gpu’s to use.
Am I missing something ?
I’ll happily answer any questions (if I’m not making my self clear), take any suggestions or observations.
nvidia-bug-report.log (926 KB)