# Frequent Error

q2l

\[toc]

## Environment

### Failed to initialize NVML: Driver/library version mismatch

* 原因：驱动更新导致不匹配
* 解决方案：
  * 卸载 kernel mode
  * sudo rmmod nvidia
  * 在卸载中可能会遇到相关进程被占用的报错，只需要卸载占用的进程即可   
* 实例：  

  \`\`\`bash

  (base) \[q2l\@gpu4 \~]$ nvidia-smi

  Failed to initialize NVML: Driver/library version mismatch

  (base) \[q2l\@gpu4 \~]$ sudo lsof -n -w /dev/nvidia\* //查看当前正在运行的Nvidia进程，发现并没有

  (base) \[q2l\@gpu4 \~]$ sudo rmmod nvidia

  rmmod: ERROR: Module nvidia is in use by: nvidia\_modeset

  (base) \[q2l\@gpu4 \~]$ sudo rmmod nvidia\_modeset

  rmmod: ERROR: Module nvidia\_modeset is in use by: nvidia\_drm

  (base) \[q2l\@gpu4 \~]$ sudo rmmod nvidia\_drm

  (base) \[q2l\@gpu4 \~]$ sudo rmmod nvidia\_modeset

  (base) \[q2l\@gpu4 \~]$ sudo rmmod nvidia

  (base) \[q2l\@gpu4 \~]$ nvidia-smi

  Fri Jun  5 09:05:02 2020       

  +-----------------------------------------------------------------------------+

  \| NVIDIA-SMI 440.33.01    Driver Version: 440.33.01    CUDA Version: 10.2     |

  \|-------------------------------+----------------------+----------------------+

  \| GPU  Name        Persistence-M| Bus-Id        Disp.A | Volatile Uncorr. ECC |

  \| Fan  Temp  Perf  Pwr:Usage/Cap|         Memory-Usage | GPU-Util  Compute M. |

  |===============================+======================+======================|

  \|   0  Tesla V100-PCIE...  Off  | 00000000:06:00.0 Off |                    0 |

  \| N/A   49C    P0    40W / 250W |      0MiB / 32510MiB |      0%      Default |

  +-------------------------------+----------------------+----------------------+

  \|   1  Tesla V100-PCIE...  Off  | 00000000:84:00.0 Off |                    0 |

  \| N/A   46C    P0    40W / 250W |      0MiB / 32510MiB |      0%      Default |

  +-------------------------------+----------------------+----------------------+

+-----------------------------------------------------------------------------+ | Processes: GPU Memory | | GPU PID Type Process name Usage | |=============================================================================| | No running processes found | +-----------------------------------------------------------------------------+

\`\`\`

* Reference: [nvidia-smi:command not found 问题解决,Failed to initialize NVML: Driver/library version mismatch](https://blog.csdn.net/fengzhongluoleidehua/article/details/82626538)


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://legacy.cookielau.com/archives/10-hardware/0-gpu/000-commonerror.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.