linux运行openfoam并行会报错：attempt to run parallel on 1 processor

linux运行openfoam并行会报错：attempt to run parallel on 1 processor

步骤：
1.先在终端输入which mpirun,查看当前并行路径；
2.输入gedit ~/.bashrc，文本方式打开bashrc文件；
3.修改为export PATH=/usr/bin:$PATH；
4.source ~/.bashrc ，使修改起效；