Posted by SuspiciousDroid on Mar 31, 2016; 6:10pm
URL: https://forum.jogamp.org/CL-DEVICE-NOT-AVAILABLE-when-creating-CLContext-with-64-bit-Java-on-GTX-970-tp4036560p4036570.html

We seem to both be using the official nvidia drivers v364.72, so it can't be that.

I must be either missing some other device drivers or have something else installed that messes with stuff.

I'm more leaning towards "something is messing with stuff" because first running some OpenGL initialization was able to make OpenCL work. If I were missing drivers, loading OpenGL stuff really shouldn't matter.