I installed cuda 7.0.
cuda-install-samples-7.0.sh
cd /NVIDIA_CUDA-7.0_Samples
make
There was a problem.
But final step, I tried
cd bin/x86_64/linux/release
./deviceQuery
I obtained an error.
cudaGetDeviceCount returned 38
→ no CUDA-capable device is detected
Result = FAIL
What is problem?