nvspeed

A minimal Nvidia GPU fan speed controller written in C.

Installation

Arch Linux

$ git clone https://aur.archlinux.org/packages/nvspeed-git
$ cd nvspeed-git
$ makepkg --nobuild
$ cd src/nvspeed/src/
$ make config
# Configure config.h, and the Makefile
$ cd ../../..
$ makepkg -si

Building

Dependencies

CUDA: for getting GPU temperature and setting fan speed with NVML

# Install dependencies
$ your-package-manager-install cuda
$ make config
# Configure config.h, and the Makefile
$ make
$ sudo make install

Usage

Sudo is required to set fan speed for NVML.

$ sudo nvspeed

Configuration

Temperature and fan speed are configured in config.h.

Temperature file (NVSPEED_PRINT_TEMP)

The daemon writes the current GPU temperature (max across all devices) to /tmp/nvspeed/temp every INTERVAL seconds in millidegrees Celsius (e.g. 45000\n for 45 °C), mimicking the Linux hwmon sysfs interface. This lets external tools read the temperature without calling NVML directly.

To disable, set #define NVSPEED_PRINT_TEMP 0 in config.h and rebuild.