nvidia-settings headless gpu oc

gpu-oc.sh

#!/bin/bash -e

# gpus.json
# to find out uuid, first match PCI port with GPU UUID
# #> lspci -vnn | grep VGA -A 2 && cat /proc/driver/nvidia/gpus/*/information
# then confirm
# #> nvidia-smi -L

if [[ -z ${1} ]] || [[ ! -s ${1} ]]; then
	printf 'must provide json config file with first argument\n'
	exit 127
fi

if ! command -v jq 1>/dev/null; then
	printf 'need jq to work\n'
	exit 2
fi

export DISPLAY=:0
export XAUTHORITY=/var/run/lightdm/root/:0

nvidia-smi -pm 1
jq -r 'keys[]' "${1}" | while read -r _name; do
	printf '\n\n'
	printf '=%.0s' {1..72}
	_j="$(jq --arg name "${_name}" '.[$name]' "${1}")"
	_uuid=$(jq -r .uuid <<<"${_j}")
	_n=$(nvidia-smi -L | awk "/${_uuid}/ {print \$2}" | cut -d':' -f1)
	printf "\nGPU #%s\t%s\n\n" "${_n}" "${_name}"
	printf '=%.0s' {1..72}
	printf '\n'
	_pl=$(jq -r .pl <<<"${_j}")
	_fan_speed=$(jq -r .fan_speed <<<"${_j}")
	_logo_brightness=$(jq -r .logo_brightness <<<"${_j}")

	printf 'set power limit to %dW.. ' "${_pl}"
	nvidia-smi -i "${_n}" -pl "${_pl}"
	nvidia-settings -a "[gpu:${_n}]/GpuPowerMizerMode=1"

	printf 'setting fan speed to %d%s..\n' "${_fan_speed}" "%"
	case "${_fan_speed}" in
		"" | "null" | "auto" | 0) nvidia-settings -a [gpu:${_n}]/GPUFanControlState=0 ;;
		*)
			nvidia-settings -a "[gpu:${_n}]/GPUFanControlState=1"

			nvidia-settings -a "[fan:${_n}]/GPUTargetFanSpeed=${_fan_speed}"
			;;
	esac

	printf 'setting logo brightness..\n'
	nvidia-settings -a "[gpu:${_n}]/GPULogoBrightness=${_logo_brightness}"

	printf 'configuring core speed\n'
	_s=0
	for _state_offset in $(jq -r '.core_offset[]' <<<"${_j}"); do
		if [[ ${_state_offset} != 0 ]]; then
			printf '\nsetting P%d offset %d.. ' "${_s}" "${_state_offset}"
			nvidia-settings -a "[gpu:${_n}]/GPUGraphicsClockOffset[${_s}]=${_state_offset}"
		fi
		_s=$((_s + 1))
	done

	printf 'configuring mem speed\n'
	_s=0
	for _state_offset in $(jq -r '.mem_offset[]' <<<"${_j}"); do
		if [[ ${_state_offset} != 0 ]]; then
			printf '\nsetting P%d mem offset %d.. ' "${_s}" "${_state_offset}"
			nvidia-settings -a "[gpu:${_n}]/GPUMemoryTransferRateOffset[${_s}]=${_state_offset}"
		fi
		_s=$((_s + 1))
	done

	printf '=%.0s' {1..72}
	printf '\n\n'
done

gpus.json

{
  "NVIDIA GeForce GTX 1070 Ti (Micro-Star International Co., Ltd. [MSI])": {
    "uuid": "GPU-ad494100-42c0-8d15-c875-bdf30068a8b6",
    "pl": 120,
    "fan_speed": 60,
    "logo_brightness": 0,
    "core_offset": [
      0,
      0,
      144,
      144
    ],
    "mem_offset": [
      0,
      0,
      1024,
      1024
    ]
  },
  "NVIDIA GeForce GTX 1070 Ti (ZOTAC International (MCO) Ltd.)": {
    "uuid": "GPU-debd1c1d-d07f-c9c3-f965-319c75bb441c",
    "pl": 120,
    "fan_speed": 60,
    "logo_brightness": 0,
    "core_offset": [
      0,
      0,
      144,
      144
    ],
    "mem_offset": [
      0,
      0,
      1024,
      1024
    ]
  }
}

xorg.conf

# nvidia-xconfig: X configuration file generated by nvidia-xconfig
# nvidia-xconfig:  version 470.74


Section "ServerLayout"
    Identifier     "Layout0"
    Screen      0  "Screen0"
    Screen      1  "Screen1" LeftOf "Screen0"
    Screen      2  "Screen2" RightOf "Screen1"
    InputDevice    "Keyboard0" "CoreKeyboard"
    InputDevice    "Mouse0" "CorePointer"
EndSection

Section "Files"
EndSection

Section "InputDevice"

    # generated from default
    Identifier     "Mouse0"
    Driver         "mouse"
    Option         "Protocol" "auto"
    Option         "Device" "/dev/mouse"
    Option         "Emulate3Buttons" "no"
    Option         "ZAxisMapping" "4 5"
EndSection

Section "InputDevice"

    # generated from default
    Identifier     "Keyboard0"
    Driver         "kbd"
EndSection

Section "Monitor"
    Identifier     "Monitor0"
    VendorName     "Unknown"
    ModelName      "Unknown"
    Option         "DPMS"
EndSection

Section "Monitor"
    Identifier     "Monitor1"
    VendorName     "Unknown"
    ModelName      "Unknown"
    Option         "DPMS"
EndSection

Section "Monitor"
    Identifier     "Monitor2"
    VendorName     "Unknown"
    ModelName      "Unknown"
    Option         "DPMS"
EndSection

Section "Device"
    Identifier     "Device0"
    Driver         "nvidia"
    VendorName     "NVIDIA Corporation"
    BoardName      "NVIDIA GeForce RTX 3060 Ti"
    BusID          "PCI:1:0:0"
EndSection

Section "Device"
    Identifier     "Device1"
    Driver         "nvidia"
    VendorName     "NVIDIA Corporation"
    BoardName      "NVIDIA GeForce GTX 1070 Ti"
    BusID          "PCI:2:0:0"
EndSection

Section "Device"
    Identifier     "Device2"
    Driver         "nvidia"
    VendorName     "NVIDIA Corporation"
    BoardName      "NVIDIA GeForce GTX 1070 Ti"
    BusID          "PCI:4:0:0"
EndSection

Section "Screen"
    Identifier     "Screen0"
    Device         "Device0"
    Monitor        "Monitor0"
    DefaultDepth    24
    SubSection     "Display"
        Depth       24
    EndSubSection
    Option         "AllowEmptyInitialConfiguration" "True"
    Option         "ConnectedMonitor" "DFP-0"
    Option         "Interactive" "False"
    Option         "Coolbits" "24"
EndSection

Section "Screen"
    Identifier     "Screen1"
    Device         "Device1"
    Monitor        "Monitor1"
    DefaultDepth    24
    SubSection     "Display"
        Depth       24
    EndSubSection
    Option         "AllowEmptyInitialConfiguration" "True"
    Option         "ConnectedMonitor" "DFP-1"
    Option         "Interactive" "False"
    Option         "Coolbits" "24"
EndSection

Section "Screen"
    Identifier     "Screen2"
    Device         "Device2"
    Monitor        "Monitor2"
    DefaultDepth    24
    SubSection     "Display"
        Depth       24
    EndSubSection
    Option         "AllowEmptyInitialConfiguration" "True"
    Option         "ConnectedMonitor" "DFP-2"
    Option         "Interactive" "False"
    Option         "Coolbits" "24"
EndSection