[GH-ISSUE #61] [Question] Why fan speed will be set to 0 when nvitop is running

gitea-mirror commented

2026-05-05 03:22:55 -06:00

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Originally created by @gglin001 on GitHub (Mar 19, 2023).
Original GitHub issue: https://github.com/XuehaiPan/nvitop/issues/61

Originally assigned to: @XuehaiPan on GitHub.

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I have read the documentation https://nvitop.readthedocs.io.
I have searched the Issue Tracker that this hasn't already been reported. (comment there if it has.)
I have tried the latest version of nvitop in a new isolated virtual environment.

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Hi, big thanks for creating this great tool!

I found that the gpu fans speed will be set to 0 when nvitop is running at frontend(even the tempature is ~45C), but I did not found any fan control related code, could you explain how it works? thanks!

Originally created by @gglin001 on GitHub (Mar 19, 2023). Original GitHub issue: https://github.com/XuehaiPan/nvitop/issues/61 Originally assigned to: @XuehaiPan on GitHub. ### Required prerequisites - [X] I have read the documentation <https://nvitop.readthedocs.io>. - [X] I have searched the [Issue Tracker](https://github.com/XuehaiPan/nvitop/issues) that this hasn't already been reported. (comment there if it has.) - [ ] I have tried the latest version of nvitop in a new isolated virtual environment. ### Questions Hi, big thanks for creating this great tool! I found that the gpu fans speed will be set to 0 when `nvitop` is running at frontend(even the tempature is ~45C), but I did not found any fan control related code, could you explain how it works? thanks!

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2026-05-05 03:22:55 -06:00

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gitea-mirror commented

2026-05-05 03:22:59 -06:00

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@XuehaiPan commented on GitHub (Mar 20, 2023):

I found that the gpu fans speed will be set to 0 when nvitop is running at frontend(even the tempature is ~45C)

@gglin001 I wonder what's the output of nvidia-smi. Did it also report zero?

$ nvidia-smi
Mon Mar 20 12:49:34 2023       
+-----------------------------------------------------------------------------+
| NVIDIA-SMI 525.89.02    Driver Version: 528.49       CUDA Version: 12.0     |
|-------------------------------+----------------------+----------------------+
| GPU  Name        Persistence-M| Bus-Id        Disp.A | Volatile Uncorr. ECC |
| Fan  Temp  Perf  Pwr:Usage/Cap|         Memory-Usage | GPU-Util  Compute M. |
|                               |                      |               MIG M. |
|===============================+======================+======================|
|   0  NVIDIA GeForce ...  On   | 00000000:09:00.0  On |                  N/A |
|  0%   44C    P8    41W / 350W |   4456MiB / 24576MiB |      8%      Default |
|                               |                      |                  N/A |
+-------------------------------+----------------------+----------------------+
                                                                               
+-----------------------------------------------------------------------------+
| Processes:                                                                  |
|  GPU   GI   CI        PID   Type   Process name                  GPU Memory |
|        ID   ID                                                   Usage      |
|=============================================================================|
|    0   N/A  N/A      9996      G   /Xwayland                       N/A      |
|    0   N/A  N/A     17743      G   /Xwayland                       N/A      |
+-----------------------------------------------------------------------------+

$ nvidia-smi --query-gpu=fan.speed --format=csv
fan.speed [%]
0 %

but I did not found any fan control related code, could you explain how it works?

Yes, nvitop does not take over your fan control. It only reports status queries from NVML. The NVIDIA driver and operating system control the fan configuration.

Let me know if this resolves your question.

@XuehaiPan commented on GitHub (Mar 20, 2023): > I found that the gpu fans speed will be set to 0 when nvitop is running at frontend(even the tempature is ~45C) @gglin001 I wonder what's the output of `nvidia-smi`. Did it also report zero? ```console $ nvidia-smi Mon Mar 20 12:49:34 2023 +-----------------------------------------------------------------------------+ | NVIDIA-SMI 525.89.02 Driver Version: 528.49 CUDA Version: 12.0 | |-------------------------------+----------------------+----------------------+ | GPU Name Persistence-M| Bus-Id Disp.A | Volatile Uncorr. ECC | | Fan Temp Perf Pwr:Usage/Cap| Memory-Usage | GPU-Util Compute M. | | | | MIG M. | |===============================+======================+======================| | 0 NVIDIA GeForce ... On | 00000000:09:00.0 On | N/A | | 0% 44C P8 41W / 350W | 4456MiB / 24576MiB | 8% Default | | | | N/A | +-------------------------------+----------------------+----------------------+ +-----------------------------------------------------------------------------+ | Processes: | | GPU GI CI PID Type Process name GPU Memory | | ID ID Usage | |=============================================================================| | 0 N/A N/A 9996 G /Xwayland N/A | | 0 N/A N/A 17743 G /Xwayland N/A | +-----------------------------------------------------------------------------+ $ nvidia-smi --query-gpu=fan.speed --format=csv fan.speed [%] 0 % ``` > but I did not found any fan control related code, could you explain how it works? Yes, `nvitop` does not take over your fan control. It only reports status queries from NVML. The NVIDIA driver and operating system control the fan configuration. Let me know if this resolves your question.

gitea-mirror commented

2026-05-05 03:23:00 -06:00

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@gglin001 commented on GitHub (Mar 20, 2023):

(pyenv) ➜  ~ nvidia-smi
Mon Mar 20 13:15:42 2023       
+---------------------------------------------------------------------------------------+
| NVIDIA-SMI 530.30.02              Driver Version: 530.30.02    CUDA Version: 12.1     |
|-----------------------------------------+----------------------+----------------------+
| GPU  Name                  Persistence-M| Bus-Id        Disp.A | Volatile Uncorr. ECC |
| Fan  Temp  Perf            Pwr:Usage/Cap|         Memory-Usage | GPU-Util  Compute M. |
|                                         |                      |               MIG M. |
|=========================================+======================+======================|
|   0  NVIDIA GeForce RTX 3090 Ti      Off| 00000000:06:00.0 Off |                    0 |
|  0%   36C    P8               28W / 450W|      0MiB / 23028MiB |      0%      Default |
|                                         |                      |                  N/A |
+-----------------------------------------+----------------------+----------------------+
                                                                                         
+---------------------------------------------------------------------------------------+
| Processes:                                                                            |
|  GPU   GI   CI        PID   Type   Process name                            GPU Memory |
|        ID   ID                                                             Usage      |
|=======================================================================================|
|  No running processes found                                                           |
+---------------------------------------------------------------------------------------+
(pyenv) ➜  ~ nvidia-smi --query-gpu=fan.speed --format=csv
fan.speed [%]
0 %

the wired thing is that when I quit nvitop, the fan will start to run, I did not change the fan settings(coolbit and manual fan control)

@gglin001 commented on GitHub (Mar 20, 2023): <img width="967" alt="Screen Shot 2023-03-20 at 1 14 59 PM" src="https://user-images.githubusercontent.com/13805221/226252616-5bf9936d-6040-4b08-9fdc-3aace5b488f6.png"> ``` (pyenv) ➜ ~ nvidia-smi Mon Mar 20 13:15:42 2023 +---------------------------------------------------------------------------------------+ | NVIDIA-SMI 530.30.02 Driver Version: 530.30.02 CUDA Version: 12.1 | |-----------------------------------------+----------------------+----------------------+ | GPU Name Persistence-M| Bus-Id Disp.A | Volatile Uncorr. ECC | | Fan Temp Perf Pwr:Usage/Cap| Memory-Usage | GPU-Util Compute M. | | | | MIG M. | |=========================================+======================+======================| | 0 NVIDIA GeForce RTX 3090 Ti Off| 00000000:06:00.0 Off | 0 | | 0% 36C P8 28W / 450W| 0MiB / 23028MiB | 0% Default | | | | N/A | +-----------------------------------------+----------------------+----------------------+ +---------------------------------------------------------------------------------------+ | Processes: | | GPU GI CI PID Type Process name GPU Memory | | ID ID Usage | |=======================================================================================| | No running processes found | +---------------------------------------------------------------------------------------+ (pyenv) ➜ ~ nvidia-smi --query-gpu=fan.speed --format=csv fan.speed [%] 0 % ``` the wired thing is that when I quit `nvitop`, the fan will start to run, I did not change the fan settings(coolbit and manual fan control)

gitea-mirror commented

2026-05-05 03:23:01 -06:00

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@gglin001 commented on GitHub (Mar 20, 2023):

from
https://forums.developer.nvidia.com/t/fan-speed-regression-with-nvidia-beta-470-42-01-and-rtx-3080-fans-dont-stop-on-idle/183604/20

Please test with driver 520.56.06 which has the fix and share results.
We have updated the nvidia-settings control panel to correctly limit the allowed values for GPUTargetFanSpeed to match the existing valid fan speed ranges for supported NVIDIA GPUs. The valid ranges are 30%-100% for Ampere or newer GPUs, and 1%-100% for older GPUs.

the default fan speed is 30%-100% I think, how can nvitop change it 0
I do want to set the fans more silent by the way

@gglin001 commented on GitHub (Mar 20, 2023): from https://forums.developer.nvidia.com/t/fan-speed-regression-with-nvidia-beta-470-42-01-and-rtx-3080-fans-dont-stop-on-idle/183604/20 > Please test with driver 520.56.06 which has the fix and share results. We have updated the nvidia-settings control panel to correctly limit the allowed values for GPUTargetFanSpeed to match the existing valid fan speed ranges for supported NVIDIA GPUs. The valid ranges are 30%-100% for Ampere or newer GPUs, and 1%-100% for older GPUs. the default fan speed is 30%-100% I think, how can `nvitop` change it 0 I do want to set the fans more silent by the way

gitea-mirror commented

2026-05-05 03:23:02 -06:00

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@XuehaiPan commented on GitHub (Mar 20, 2023):

how can nvitop change it 0

nvitop does not change your configuration. In your screenshot above (https://github.com/XuehaiPan/nvitop/issues/61#issuecomment-1475637638), the output of nvitop agrees with nvidia-smi, both show the fan percentage are zeros.

It's depending on the hardware, I think. I got fan speed at 22% on idle Ampare GPU.

@XuehaiPan commented on GitHub (Mar 20, 2023): > how can `nvitop` change it 0 `nvitop` does not change your configuration. In your screenshot above (https://github.com/XuehaiPan/nvitop/issues/61#issuecomment-1475637638), the output of `nvitop` agrees with `nvidia-smi`, both show the fan percentage are zeros. It's depending on the hardware, I think. I got fan speed at 22% on idle Ampare GPU. ![Screenshot](https://user-images.githubusercontent.com/16078332/226256971-ce45730f-fe6c-4b19-bfa0-2ac01ef0e94d.png)

gitea-mirror commented

2026-05-05 03:23:03 -06:00

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@gglin001 commented on GitHub (Mar 20, 2023):

I see, Thanks!

I will do more tests for the weird thing ("when I quit nvitop, the fan will start to run") in the future

@gglin001 commented on GitHub (Mar 20, 2023): I see, Thanks! I will do more tests for the weird thing ("when I quit nvitop, the fan will start to run") in the future

gitea-mirror referenced this issue

2026-05-05 03:26:28 -06:00

[PR #39] [MERGED] feat(gui/metrics): add process metrics screen #132

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[GH-ISSUE #61] [Question] Why fan speed will be set to 0 when nvitop is running #39

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