AMD GPU scripts for Linux, one to overclock, one to get stats on the GPU. Written for my Vega 64

AMDGPUOC.sh

#!/bin/bash

<<LICENSE
    Copyright (C) 2018-2019  kevinlekiller
    
    This program is free software; you can redistribute it and/or
    modify it under the terms of the GNU General Public License
    as published by the Free Software Foundation; either version 2
    of the License, or (at your option) any later version.
    
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.
    
    You should have received a copy of the GNU General Public License
    along with this program; if not, write to the Free Software
    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
    https://www.gnu.org/licenses/old-licenses/gpl-2.0.en.html
LICENSE

# This script uses https://github.com/Eliovp/amdmemorytweak and https://github.com/Lucie2A/amdtweak/tree/contribution

# Enables GPU scaling so the monitor doesn't go out of range when using non supported modes.
for output in $(xrandr --prop | grep -E -o -i "^[A-Z\-]+-[0-9]+"); do xrandr --output "$output" --set "scaling mode" "Full aspect"; done

# These modes allow for 75% of 4K if a game is too demanding, a 60 and 30hz mode are added.
if ! [[ $(xrandr) =~ 3200x1800.*60 ]]; then
    xrandr --newmode "3200x1800" 364.47  3200 3208 3240 3280  1800 1838 1846 1852 +hsync -vsync
    xrandr --addmode HDMI-A-0 "3200x1800"
fi

if ! [[ $(xrandr) =~ 3200x1800.*30 ]]; then
    xrandr --newmode "3200x1800_30" 179.68  3200 3208 3240 3280  1800 1812 1820 1826 +hsync -vsync
    xrandr --addmode HDMI-A-0 "3200x1800_30"
fi

# Which GPU to use.
GPUID=${GPUID:-0}

############################################################################################
CARDWD="/sys/class/drm/card$GPUID/device"
if [[ $(grep 0x1002 $CARDWD/vendor 2> /dev/null) == "" ]]; then
    echo "AMD GPU not found, exiting."
    exit 1
fi
HWMON="$(find $CARDWD/hwmon/ -name hwmon[0-9] -type d | head -n 1)"
if [[ ! -d $HWMON ]]; then
    echo "Unable to find hwmon directory for the GPU, fan control and power control requires it, exiting."
    exit 1
fi

DBGFILE=/sys/kernel/debug/dri/0/amdgpu_pm_info
function stats() {
    echo "Fan Speed: $(cat $HWMON/fan1_input) RPM"
    sudo pcregrep -M "GFX Clocks.*(\n.*)*GPU Load.*" /sys/kernel/debug/dri/0/amdgpu_pm_info
    cat $CARDWD/pp_power_profile_mode
    cat $CARDWD/pp_od_clk_voltage
    cat $CARDWD/pp_dpm_sclk
    cat $CARDWD/pp_dpm_mclk
    echo "Limit (currently)       : $(($(cat $HWMON/power1_cap)/1000000)) watts"
}

trap cleanup SIGHUP SIGINT SIGQUIT SIGFPE SIGKILL SIGTERM
function cleanup() {
    echo "Reverting overclock settings."
    sudo amdtweak.sh r
    sudo amdmemtweak --ref 3900
    sudo bash -c "echo $(($DEFAULTPOWERCAP*1000000)) > $HWMON/power1_cap"
    stats
    exit
}

# Changes the powerplay table, see the included script. 
sudo amdtweak.sh
# Raises the power limit from 220 watts to 330 (50%)
sudo bash -c "echo 330000000 > $HWMON/power1_cap"
# Changes the tref, seems to be the only timing that makes any significant difference on my card.
sudo amdmemtweak --ref 25000

while [[ true ]]; do
    clear
    stats
    sleep  1
done

AMDGPUStats.sh

#!/bin/bash

<<LICENSE
	Copyright (C) 2018-2019  kevinlekiller
	This program is free software; you can redistribute it and/or
	modify it under the terms of the GNU General Public License
	as published by the Free Software Foundation; either version 2
	of the License, or (at your option) any later version.
	This program is distributed in the hope that it will be useful,
	but WITHOUT ANY WARRANTY; without even the implied warranty of
	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
	GNU General Public License for more details.
	You should have received a copy of the GNU General Public License
	along with this program; if not, write to the Free Software
	Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
	https://www.gnu.org/licenses/old-licenses/gpl-2.0.en.html
LICENSE

# This file has info on the GPU voltage (VDDGFX) ; Alternatively, without root
# access you can get the voltage from /sys/class/drm/card0/device/hwmon/hwmon2/in0_input
DBGFILE=/sys/kernel/debug/dri/0/amdgpu_pm_info
CARDWD="/sys/class/drm/card0/device"
HWMON="$(find $CARDWD/hwmon/ -name hwmon[0-9] -type d | head -n 1)"
while [[ true ]]; do
        echo "Fan Speed: $(cat $HWMON/fan1_input) RPM"
        sudo pcregrep -M "GFX Clocks.*(\n.*)*GPU Load.*" "$DBGFILE"
        cat $CARDWD/pp_power_profile_mode
        cat $CARDWD/pp_od_clk_voltage
        echo "GPU CLK:"
        grep "*" $CARDWD/pp_dpm_sclk
        echo "HBM CLK:"
        grep "*" $CARDWD/pp_dpm_mclk
        echo "SOC CLK:"
        cat $CARDWD/pp_dpm_socclk
        sleep 2
        clear
done

<<EXAMPLE
$ ./AMDGPUStats.sh

Fan Speed: 391 RPM
GFX Clocks and Power:
        167 MHz (MCLK)
        27 MHz (SCLK)
        1138 MHz (PSTATE_SCLK)
        800 MHz (PSTATE_MCLK)
        856 mV (VDDGFX)
        6.0 W (average GPU)

GPU Temperature: 32 C
GPU Load: 0 %
NUM        MODE_NAME BUSY_SET_POINT FPS USE_RLC_BUSY MIN_ACTIVE_LEVEL
  0 BOOTUP_DEFAULT*:             70  60          0              0
  1 3D_FULL_SCREEN :             70  60          1              3
  2   POWER_SAVING :             90  60          0              0
  3          VIDEO :             70  60          0              0
  4             VR :             70  90          0              0
  5        COMPUTE :             30  60          0              6
  6         CUSTOM :              0   0          0              0
OD_SCLK:
0:        852Mhz        800mV
1:        991Mhz        900mV
2:       1084Mhz        950mV
3:       1138Mhz       1000mV
4:       1200Mhz       1050mV
5:       1401Mhz       1100mV
6:       1536Mhz       1150mV
7:       1630Mhz       1200mV
OD_MCLK:
0:        167Mhz        800mV
1:        500Mhz        800mV
2:        800Mhz        950mV
3:        945Mhz       1100mV
OD_RANGE:
SCLK:     852MHz       2400MHz
MCLK:     167MHz       1500MHz
VDDC:     800mV        1200mV
GPU CLK:
0: 852Mhz *
HBM CLK:
0: 167Mhz *
SOC CLK:
0: 600Mhz *
1: 720Mhz 
2: 800Mhz 
3: 847Mhz 
4: 900Mhz 
5: 960Mhz 
6: 1028Mhz
EXAMPLE

amdtweak.sh

#!/usr/bin/env bash
AMDTWEAK_DIR="/home/kevin/git/amdtweak"
cd $AMDTWEAK_DIR
# Revert to stock settings.
if [[ $1 == "r" ]]; then
    sudo node ${AMDTWEAK_DIR}/amdtweak.js \
    --card @ \
    --read-card-pp \
    --set VddcLookupTable.Entries[0].Vdd=800 \
    --set VddcLookupTable.Entries[1].Vdd=900 \
    --set VddcLookupTable.Entries[2].Vdd=950 \
    --set VddcLookupTable.Entries[3].Vdd=1000 \
    --set VddcLookupTable.Entries[4].Vdd=1050 \
    --set VddcLookupTable.Entries[5].Vdd=1100 \
    --set VddcLookupTable.Entries[6].Vdd=1150 \
    --set VddcLookupTable.Entries[7].Vdd=1200 \
    --set GfxClockDependencyTable.Entries[0].Clock=85200 \
    --set GfxClockDependencyTable.Entries[1].Clock=99100 \
    --set GfxClockDependencyTable.Entries[2].Clock=108400 \
    --set GfxClockDependencyTable.Entries[3].Clock=113800 \
    --set GfxClockDependencyTable.Entries[4].Clock=120000 \
    --set GfxClockDependencyTable.Entries[5].Clock=140100 \
    --set GfxClockDependencyTable.Entries[6].Clock=153600 \
    --set GfxClockDependencyTable.Entries[7].Clock=163000 \
    --set MemClockDependencyTable.Entries[3].MemClock=94500 \
    --set MemClockDependencyTable.Entries[3].VddIndex=5 \
    --set SocClockDependencyTable.Entries[6].Clock=102800 \
    --write-card-pp
    # This is to force the card to go back to switching to lower states, any time I touch anything
    # relating to power play the clocks or voltages never go back down to minimum.
    sudo bash -c "echo low > /sys/class/drm/card0/device/power_dpm_force_performance_level"
    sudo bash -c "echo auto > /sys/class/drm/card0/device/power_dpm_force_performance_level"
else
    # By setting the 6th SOC state clock speed higher, it allows the 3rd HBM state clock speed to
    # clock higher (it can only go as high as the 6th SOC clock speed).
    # Vddc 2 to 6 must be all the same voltage or HBM will only go as high as HBM state 2 (800MHz)
    # I've spent hours trying to change other settings, like fooling around with
    # MemClockDependencyTable.Entries[].VddIndex= for example, but only setting those the same
    # voltage worked.
    sudo node ${AMDTWEAK_DIR}/amdtweak.js \
    --card @ \
    --read-card-pp \
    --set VddcLookupTable.Entries[0].Vdd=800 \
    --set VddcLookupTable.Entries[1].Vdd=900 \
    --set VddcLookupTable.Entries[2].Vdd=950 \
    --set VddcLookupTable.Entries[3].Vdd=950 \
    --set VddcLookupTable.Entries[4].Vdd=950 \
    --set VddcLookupTable.Entries[5].Vdd=950 \
    --set VddcLookupTable.Entries[6].Vdd=950 \
    --set VddcLookupTable.Entries[7].Vdd=975 \
    --set GfxClockDependencyTable.Entries[0].Clock=85200 \
    --set GfxClockDependencyTable.Entries[1].Clock=99100 \
    --set GfxClockDependencyTable.Entries[2].Clock=108400 \
    --set GfxClockDependencyTable.Entries[3].Clock=113800 \
    --set GfxClockDependencyTable.Entries[4].Clock=120000 \
    --set GfxClockDependencyTable.Entries[5].Clock=145000 \
    --set GfxClockDependencyTable.Entries[6].Clock=160200 \
    --set GfxClockDependencyTable.Entries[7].Clock=170200 \
    --set MemClockDependencyTable.Entries[3].MemClock=110000 \
    --set MemClockDependencyTable.Entries[3].VddIndex=5 \
    --set SocClockDependencyTable.Entries[6].Clock=110000 \
    --write-card-pp
fi