@@ -46,8 +46,8 @@ Firstly we pull the latest code from github.
git clone https://github.com/paddlepaddle/Paddle
cd Paddle
# Use git checkout to switch to stable versions such as v1.7.2
git checkout v1.7.2
# Use git checkout to switch to stable versions such as v1.8.4
git checkout v1.8.4
**note**: If your environment is a multi-card machine, it is recommended to install nccl; otherwise, you can skip this step by specifying WITH_NCCL = OFF during compilation. Note that if WITH_NCCL = ON, and NCCL is not installed, the compiler will report an error.