DeviceQuery not showing Tesla S2050

operating system: ubuntu 12.04 64 bit
Cuda version: 5.0

After reboot the deviceQuery sees both the Tesla and a Quadro NVS 290, but soon after it only shows one Cuda capable device (the NVS).

If I use “lspci | grep -i nvidia” this is the output;

01:00.0 3D controller: NVIDIA Corporation GF100 [Tesla S2050] (rev ff)
01:00.1 Audio device: NVIDIA Corporation GF100 High Definition Audio Controller (rev ff)
02:00.0 VGA compatible controller: NVIDIA Corporation G86 [Quadro NVS 290] (rev a1)

but then the deviceQuery just shows device 0: “Quadro NVS 290”

Any help or suggestions would be appreciated. I a new to CUDA and trying to make sense of it all…

Thanks

Have you tried putting the kernel driver into persistent mode by invoking

nvidia-smi -pm 1

directly after startup?

Please note that Ubuntu 12.04 is not suppported by the currently shipping version of CUDA, which is 5.0. Encountering various problems on an unsupported platform is not entirely unexpected. A list of supported platforms can be found in the CUDA 5.0 release notes:

http://developer.download.nvidia.com/compute/cuda/5_0/rc/docs/CUDA_Toolkit_Release_Notes_And_Errata.txt

Thanks for your response njuffa.

It end up that after re-boot both GPU’s show up in the DeviceQuery and ,for a brief window of time, I am able to successfully use the Tesla GPU through Cuda code. But soon after that ( but not as a result of using it for computation) it ‘disappears’ from the DeviceQuery and only the NVS is listed as a CUDA capable device. It usually lasts for about 5 minutes then it is gone.

So I am wondering what may come in and disable/override that GPU? Is there anyway of tracing through a log file what may have happened?