---
title: 运行ST测试时报错“Failed to get device count”-昇腾社区
description: 运行ST测试用例时报错“Failed to get device count”。
keywords: ST测试
url: https://www.hiascend.com/document/caselibrary/detail/topic_0000001390696756-LWhmleG3
section: (其他)
---

# 运行ST测试时报错“Failed to get device count”-昇腾社区

URL: https://www.hiascend.com/document/caselibrary/detail/topic_0000001390696756-LWhmleG3
描述: 运行ST测试用例时报错“Failed to get device count”。
关键词: ST测试

昇腾文档 [了解详情](https://www.hiascend.com/document)

故障案例 [了解详情](https://www.hiascend.com/document/caselibrary)

运行ST测试时报错“Failed to get device count”

运行ST测试时报错“Failed to get device count”

2022/11/24

1.6k

问题信息

| 问题来源 | 产品大类 | 关键字 |
| --- | --- | ---|
| 官方 | 算子开发 | ST测试 |

#### 问题现象描述

运行ST测试用例时报错“Failed to get device count”。

#### 原因分析

环境变量配置有误。

#### 解决措施

参考以下配置环境变量：

```
# 修改为Ascend实际的安装路径，子目录需包含atc, acllib, opp
install_path="/usr/local/Ascend"

PATH=${install_path}/atc/bin:${install_path}/atc/ccec_compiler/bin:$PATH
export ASCEND_OPP_PATH=${install_path}/opp
export DDK_PATH=${install_path}
export NPU_HOST_LIB=${install_path}/acllib/lib64
export LD_LIBRARY_PATH=${install_path}/acllib/lib64
export PYTHONPATH=${install_path}/atc/python/site-packages:$PYTHONPATH
export PYTHONPATH=${install_path}/toolkit/python/site-packages:$PYTHONPATH
export PATH=${install_path}/toolkit/python/site-packages/bin:$PATH
export DDK_PATH=${install_path}
```

本页内容

- 问题信息
- 问题现象描述
- 原因分析
- 解决措施