It is doing GPU mining, mined a good amount myself this way in the first 24 hours. You should change rc.local but also use a console to miner.setEtherbase('youraddress') (View Post)
Since you ask for an AMI, I set up a simple public AMI for GPU mining on Amazon ec2. It is ami-1f73d474 (ubuntu 14.04 ethereum NVIDIA CUDA GPU ether miner autostart) in US East (N. Virginia) region. … (View Post)