I installed the Cuda Toolkit 8.0 from https://developer.nvidia.com/cuda-toolkit, on Ubuntu 16.04, with a Quadro 4000 graphics card.
When running a Theano code sample, I get this:
ERROR (theano.sandbox.cuda): Failed to compile cuda_ndarray.cu: libcublas.so.8.0: cannot open shared object file: No such file or directory
WARNING (theano.sandbox.cuda): CUDA is installed, but device gpu is not available (error: cuda unavailable)
Looping 1000 times took 2.982572 seconds
Result is [ 1.23178029 1.61879337 1.52278066 …, 2.20771813 2.29967761
Used the cpu
Why would the GPU not be available? I know the graphics card is old, but I can’t find a compatibility list on the website to check if it is too old or not.