[andretti1977]

GP/GAs were more popular than NNs before NNs started to use gpu a few years ago and had already some real world applications like antenna design or circuit solvers. That said GP (or GA) didn't gathered the same fame NNs have now since using gpu with NNs let NNs provide results far better than GA/GP using only cpu. If someome will have a smart idea on how to get the advantages of using the gpu with GA/GP then GA/GP will become seriously popular.

[pmoriarty]

I don't think GP's not being able to use GPU's is the issue, because GP's have run on GPU's for a long time:

http://gpgpgpu.com/