GDDR6(X) GPU Memory Temperature reader for linux

Reads GDDR6 VRAM memory temperature from an NVIDIA GPU. These findings are based on reverse engineering of the NVIDIA GPU Linux driver.

Dependencies

• libpciaccess-dev and libpci-dev

sudo apt install libpciaccess-dev libpci-dev -y

• Kernel boot parameter: iomem=relaxed

sudo vim /etc/default/grub
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash iomem=relaxed"
sudo update-grub
sudo reboot

Tested

• RTX 4090 (AD102)
• RTX 3090 (GA102)
• RTX 3070 (GA104)