MPI运行出错Open MPI tried to fork a new process via the “execve“ system call but failed. Open MPI check

MPI单节点测试的时候报错：
Open MPI tried to fork a new process via the “execve” system call but failed. Open MPI checks many things before attempting to launch a child process, but nothing is perfect. This error may be indicative of another problem on the target host, or even som

原因：
在之前的环境配置中我们修改过~/.bashrc文件，在里面添加了export PATH=/usr/local/mpich/bin:$PATH之类的语句，你可以试试which mpicc或者which mpiexec命令，看出来的路径是不是与你export的路径是一致的，因为我之前就不一样，出来的是/usr/bin/mpich，只要修改一下~/.bashrc文件里面的内容就好了