# Redhat 6.6 Environment Configuration

## 1. Check GPU device recognition
```
  # yum install pciutils
  # sudo lspci | grep NVIDIA
  3D controller: NVIDIA Corporation Device 1df6 (rev a1) means it is recognized as V100S
```

If you run "yum install pciutils" and get the message "This system is not registered with an entitlement server. You can use subscription-manager to register."</br>

Please run the following command to start Redhat account login:</br>
    ```
     subscription-manager register
    ```
    
Input the username and password of Redhat account according to the prompt.</br>
Confirm that the system has been successfully registered and the subscription is enabled:</br>
    ```
    subscription-manager list --consumed
    ```
    </br>
    Run the following command to update the system:</br>
    ```
    yum update
    ```
    
 ## 2. Download a GPU Driver
 ```
 wget https://cn.download.nvidia.com/tesla/460.106.00/NVIDIA-Linux-x86_64-460.106.00.run
 ```
The driver version can be downloaded from the official Nvidia link according to business needs, https://www.nvidia.cn/Download/index.aspx?lang=cn.
 
 ## 3. Disable nouveau
 Because the nouveau driver installed in some Linux systems conflicts with the Nvidia driver, it needs to be disabled first. Enter "lsmod | grep nouveau", if there is a return, you need to disable it. The way to disable is as follows:
 ```
# lsmod | grep nouveau
nouveau              1514531  0 
ttm                    89568  1 nouveau
drm_kms_helper        127731  1 nouveau
drm                   355270  3 nouveau,ttm,drm_kms_helper
i2c_algo_bit            5903  1 nouveau
i2c_core               29164  5 i2c_piix4,nouveau,drm_kms_helper,drm,i2c_algo_bit
mxm_wmi                 1967  1 nouveau
video                  21686  1 nouveau
wmi                     6287  2 nouveau,mxm_wmi
```
 
 ```
 # tail -1 /etc/modprobe.d/blacklist.conf 
   blacklist nouveau
 ```
 ## 4. Install a driver
 ```
 # sudo sh <driver_installer>.run --kernel-source-path=/usr/src/kernels/<kernel_version>
 ```
 "Driver_installer" is the name of the driver installer file, "kernel_version" is the kernel version number checked in the current system.
 To check the current running kernel version, you can use the following command:
 ```
 uname -r
 ```
 
 ## 5. Verify that the GPU card is working properly
 Use nvidia-smi to verify. If the card model can be displayed normally, it can be used normally.
 ```
# nvidia-smi
Fri Apr  7 15:02:14 2023       
+-----------------------------------------------------------------------------+
| NVIDIA-SMI 460.106.00   Driver Version: 460.106.00   CUDA Version: 11.2     |
|-------------------------------+----------------------+----------------------+
| GPU  Name        Persistence-M| Bus-Id        Disp.A | Volatile Uncorr. ECC |
| Fan  Temp  Perf  Pwr:Usage/Cap|         Memory-Usage | GPU-Util  Compute M. |
|                               |                      |               MIG M. |
|===============================+======================+======================|
|   0  Tesla V100S-PCI...  Off  | 00000000:00:03.0 Off |                    0 |
| N/A   26C    P0    35W / 250W |      0MiB / 32510MiB |      0%      Default |
|                               |                      |                  N/A |
+-------------------------------+----------------------+----------------------+
                                                                               
+-----------------------------------------------------------------------------+
| Processes:                                                                  |
|  GPU   GI   CI        PID   Type   Process name                  GPU Memory |
|        ID   ID                                                   Usage      |
|=============================================================================|
|  No running processes found                                                 |
````