Nvidia GPU Tuner

nv_tune.sh

#!/bin/bash
#
# For Nvidia GPUs only
# Overclocks, underpowers, and sets fan speeds
#
# Requires bash, a compatible proprietary nvidia driver (tested with 375+), and a suitable xorg.conf
# NOTE:
# - Ensure that your Xorg configuration has coolbits configured to allow manipulation of fan and clocks. Create
#   a suitable xorg.conf using the following command:
#   sudo nvidia-xconfig -a --allow-empty-initial-configuration --cool-bits=28
# - You can run this script in a headless (server) setup. Just ensure that you have an X server running:
#   sudo xinit
#
# USAGE:
# You will need root privileges to manage clocks. The following underclocks cards to 115 watts. 
# Modify the script itself to set memory and graphics clock offsets
# sudo ./nv_tune.sh 115
#
# Much of this script was borrowed from https://gist.github.com/squadbox/e5b5f7bcd86259d627ed
#

DISPLAY=:0 

# Clock offsets in MHz
CLOCK=125
MEM=1250
# Fan speed in %
FAN=60

# Paths to the utilities we will need
SMI='/usr/bin/nvidia-smi'
SET='/usr/bin/nvidia-settings'

# Read a numerical command line arg between 75 and 175. Min/Max power is card dependent.
if [ "$1" -eq "$1" ] >/dev/null && [ "0$1" -ge "75" ]  && [ "0$1" -le "175" ]
then
    power=$1   # set power
    $SMI -pm 1 # enable persistance mode

    # how many GPU's are in the system?
    NUMGPU="$(nvidia-smi -L | wc -l)"
    echo "Configuring $NUMGPU GPUs"

    # loop through each GPU and individually 
    n=0
while [  $n -lt  $NUMGPU ];
    do
         ${SET} -V -a [gpu:${n}]/GPUPowerMizerMode=1  \
            -a [gpu:${n}]/GPUFanControlState=1  \
            -a [fan:${n}]/GPUTargetFanSpeed=$FAN  \
            -a [gpu:${n}]/GPUGraphicsClockOffset[3]=${CLOCK}  \
            -a [gpu:${n}]/GPUMemoryTransferRateOffset[3]=${MEM}   
         ${SMI} -i ${n} -pl $power 
        let n=n+1
    done
    echo "Complete"; exit 0;
else
    echo "Error: Please pick a power limit between 75 and 175, or stop."; exit 1;
fi