Update README.md

README.md

@@ -1,2 +1,21 @@
 # CCZU
 
+该实践项目练习基于MPI的并行编程。
+
+如果是在本地练习的话可以通过以下指令配置环境：
+
+Linux
+
+```bash
+$ apt update && apt install -y cmake make git vim gcc g++ wget \
+                                 mpich libmpich-dev \
+                                 openmpi-bin openmpi-doc libopenmpi-dev \
+                                 libomp-dev
+```
+
+MacOS
+
+```bash
+$ xcode-select --install
+$ brew install openmpi gcc cmake
+```