And, sadly, I have to face a difficult choice:
* On Windows, no tensorflow.
* On Linux, no drivers.
Currently, ampdgpu-pro does not support OpenCL on SI cards including HD7900 series. AFAIK, there is no immediate plan for including SI support at this moment.
P.S. You've been whitelisted now.
Same problem for me: latest driver (17.50) support xorg but I can't use opencl.
HD7900 series are old, but strong in double precision and they are already gcn generation.