NVIDIA: could not open the device file /dev/nvidia0 (Input/output error)

I reinstalled my Linux OS, and also reinstalled my OpenCL SDK, and The software configuration is below:
OS: fedora 13
Display Driver: devdriver_3.2_linux_32_260.24.run
CUDA Toolkit: cudatoolkit_3.2.9_linux_32_fedora13.run
GPU Computing SDK code samples: gpucomputingsdk_3.2_linux.run
When I installed the Nvidia driver, I have to disabled mouveau, I mainly fellow the site:
http://www.mjmwired.net/resources/mjm-fedora-nvidia.html
When I completely installed the GPU Computing SDK and I make all the sample code in /src,
and I ran deviceQuery, I got the following error message:

[i]oclDeviceQuery.exe Starting…

OpenCL SW Info:

NVIDIA: could not open the device file /dev/nvidia0 (Input/output error).
Error -1001 in clGetPlatformIDs Call !!!

!!! Error # -1000 (Unspecified Error) at line 38 , in file oclDeviceQuery.cpp !!!

Exiting…
-----------------------------------------------------------[/i]

I have referenced this site : http://forums.nvidia.com/lofiversion/index.php?t175078.html
and try everyone’s advice, but the problem still exist.
And now I have no idea about that, maybe others have the same problem and successfully solute
it can give some help? thanks!

I reinstalled my Linux OS, and also reinstalled my OpenCL SDK, and The software configuration is below:
OS: fedora 13
Display Driver: devdriver_3.2_linux_32_260.24.run
CUDA Toolkit: cudatoolkit_3.2.9_linux_32_fedora13.run
GPU Computing SDK code samples: gpucomputingsdk_3.2_linux.run
When I installed the Nvidia driver, I have to disabled mouveau, I mainly fellow the site:
http://www.mjmwired.net/resources/mjm-fedora-nvidia.html
When I completely installed the GPU Computing SDK and I make all the sample code in /src,
and I ran deviceQuery, I got the following error message:

[i]oclDeviceQuery.exe Starting…

OpenCL SW Info:

NVIDIA: could not open the device file /dev/nvidia0 (Input/output error).
Error -1001 in clGetPlatformIDs Call !!!

!!! Error # -1000 (Unspecified Error) at line 38 , in file oclDeviceQuery.cpp !!!

Exiting…
-----------------------------------------------------------[/i]

I have referenced this site : http://forums.nvidia.com/lofiversion/index.php?t175078.html
and try everyone’s advice, but the problem still exist.
And now I have no idea about that, maybe others have the same problem and successfully solute
it can give some help? thanks!

Now I have disabled the SEllinux by edit the /etc/selinux/conf and set SELINUX=disabled,

and then reboot, and the deviceQuery can run well.

Now I have disabled the SEllinux by edit the /etc/selinux/conf and set SELINUX=disabled,

and then reboot, and the deviceQuery can run well.