---
title: MPI库文件链接错误
description: "执行mpirun命令时，报“error while loading shared libraries: libmpi.so.12: cannot open shared object file: No such file or directory”的错误，如下所示："
url: https://www.hiascend.com/document/detail/zh/canncommercial/latest/devaids/hccltool/HCCLpertest_16_0010.html
sourcePath: /source/zh/canncommercial/900/devaids/hccltool/HCCLpertest_16_0010.html
indexId: 1dd3091d261002ada7a09ffad028d18355698a3ce04484a34055b9b63648825d71
---
# MPI库文件链接错误

#### 问题现象

执行mpirun命令时，报“error while loading shared libraries: libmpi.so.12: cannot open shared object file: No such file or directory”的错误，如下所示：


#### 解决方法

在环境变量LD_LIBRARY_PATH中加入MPI的lib库，例如：

```
export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:/usr/local/mpich/lib
```