正确编译之后运行时出现mpirun was unable to find the specified exec

admin

有的用户在运行abacus时会出现报错
zzt@zzt-virtual-machine:~/abacus-develop/examples/force/pw_Si2$ mpirun -n 2 abacus
--------------------------------------------------------------------------
mpirun was unable to find the specified executable file, and therefore
did not launch the job.  This error was first reported for process
rank 0; it may have occurred for other processes as well.

NOTE: A common cause for this error is misspelling a mpirun command
      line parameter option (remember that mpirun interprets the first
      unrecognized command line token as the executable).

Node:       zzt-virtual-machine
Executable: abacus

这可能是mpirun 找不到abacus可执行文件的原因。
有一种解决方法是使用abacus可执行文件的绝对路径，例如：mpirun -n 2 ~/abacus-develop/build/abacus
~/abacus-develop/build/是包含abacus可执行文件的路径。
另一种方法是把~/abacus-develop/build/添加到PATH变量中。例如：
执行命令：
export PATH="~/abacus-develop/build:$PATH"