Compilation and Installation

Configure an external network so that the server can be connected to the Internet.

Use PuTTY to log in to the server as the root user.
Go to the CESM installation package directory.
```
cd /path/to/CESM
```
Decompress the CESM installation package.
```
tar  -zxvf CESM-release-cesm2.1.3.tar.gz
```
Go to the source code directory.
```
cd CESM-release-cesm2.1.3
```
Download necessary components.
```
./manage_externals/checkout_externals
```
The command is executed successfully if the following information in is displayed:

After the download is complete, the following directory files are displayed:
Check whether the required components are installed.
```
./manage_externals/checkout_externals -S
```
The installation is successful if the following information in is displayed:

Parent topic: CESM 2.1.3 Porting Guide (openEuler 21.03)