问题
I am learning GPU Computing with R (http://www.r-tutor.com/gpu-computing). I am trying to install packages 'RPUD' or 'gputools' but failed. The RPUD version I found works only for CUDA toolkit 8.0/7.5. But I could only download CUDA 9.1. The 'gputools' could not be installed either.Any ideas/suggestions will be highly appreciated.
来源：https://stackoverflow.com/questions/48528490/r-gpu-computing-rpud-installation-failed