setup nvidia gpu on GCE ubuntu 18.04 LTE

// check the following doc to installation
// https://cloud.google.com/compute/docs/gpus/install-drivers-gpu

1. install gce nvidia driver:
```
curl -O http://developer.download.nvidia.com/compute/cuda/repos/ubuntu1804/x86_64/cuda-repo-ubuntu1804_10.0.130-1_amd64.deb
sudo dpkg -i cuda-repo-ubuntu1804_10.0.130-1_amd64.deb
sudo apt-key adv --fetch-keys http://developer.download.nvidia.com/compute/cuda/repos/ubuntu1804/x86_64/7fa2af80.pub

```

```
sudo apt-get update
sudo apt-get install cuda
```

check installation:
```
nvidia-smi

>>
Wed Jan  2 19:51:51 2019
+-----------------------------------------------------------------------------+
| NVIDIA-SMI 410.79       Driver Version: 410.79       CUDA Version: 10.0     |
|-------------------------------+----------------------+----------------------+
| GPU  Name        Persistence-M| Bus-Id        Disp.A | Volatile Uncorr. ECC |
| Fan  Temp  Perf  Pwr:Usage/Cap|         Memory-Usage | GPU-Util  Compute M. |
|===============================+======================+======================|
|   0  Tesla P4            Off  | 00000000:00:04.0 Off |                    0 |
| N/A   42C    P8     7W /  75W |     62MiB /  7611MiB |      0%      Default |
+-------------------------------+----------------------+----------------------+
```