2.3 KiB
NVidia GPU
!!! warning This is not a complete recipe - it's a component of the cryptominer "uber-recipe", but has been split into its own page to reduce complexity.
Ingredients
- Nvidia drivers for your GPU
- Some form of X11 GUI preconfigured on your linux host (yes, it's a PITA, but it's necessary for overclocking)
Preparation
Install kernel-devel and gcc
The nVidia drivers will need the kernel development packages for your OS installed, as well as gcc. Run the following (for CentOS - there will be an Ubuntu equivalent):
yum install kernel-devel-$(uname -r) gcc
Remove nouveau
Your host probably already includes nouveau, free/libre drivers for Nvidia graphics card. These won't cut it for mining, so blacklist them to avoid conflict with the dirty, proprietary Nvidia drivers:
echo 'blacklist nouveau' >> /etc/modprobe.d/blacklist.conf
dracut /boot/initramfs-$(uname -r).img $(uname -r) --force
systemctl disable gdm
reboot
Install Nvidia drivers
Download and uncompress the Nvidia drivers, and execute the installation as root, with a command something like this:
bash NVIDIA-Linux-x86_64-352.30.run
Update your X11 config by running:
nvidia-xconfig
Enable GUID
systemctl enable gdm
ln -s '/usr/lib/systemd/system/gdm.service' '/etc/systemd/system/display-manager.service'
reboot
Overclock
!!! warning Like overclocking itself, this process is still a work in progress. YMMV.
Of course, you want to squeeze the optimal performance out of your GPU. This is where the X11 environment is required - to adjust GPU clock/memory settings, you need to use the nvidia-settings command, which (stupidly) requires an X11 display, even if you're just using the command line.
The following command: configures X11 for a "fake" screen so that X11 will run, even on a headless machine managed by SSH only, and ensures that the PCI bus ID of every NVidia device is added to the xorg.conf file (to avoid errors about "(EE) no screens found(EE)")
nvidia-xconfig -a --allow-empty-initial-configuration --cool-bits=28 --use-display-device="DFP-0" --connected-monitor="DFP-0" --enable-all-gpus --separate-x-screens