59 lines
2.8 KiB
Text
59 lines
2.8 KiB
Text
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#!/bin/bash
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# script for tuned AMDGPU clock control
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# configures GPU power/clock characteristics
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# clocks/power in 3D are dynamic based on need/usage
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#
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# for 'amdgpu-default' tuned profiles, this will reset the characteristics to default
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# for others this will apply overclocking settings -- leaving clock choices to the associated power profile (eg: VR)
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#
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# rendered by Ansible with environment-appropriate values:
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# card #, eg: card0
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# path to discovered sysfs device files (power/clock/voltage control)
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#
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# AMDGPU driver/sysfs references:
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# https://01.org/linuxgraphics/gfx-docs/drm/gpu/amdgpu.html
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# https://docs.kernel.org/gpu/amdgpu/thermal.html
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#
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# start by including the 'common' script; determines card/hwmon dir/power profiles/power capability
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. $(dirname "${BASH_SOURCE[0]}")/amdgpu-common.sh
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{# begin the templated script for 'overclocked' AMD GPU profiles based on the existing tuned profiles #}
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# set the minimum GPU clock - for best performance, this should be near the maximum
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# RX6000 series power management *sucks*
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echo 's 0 {{ gpu_clock_min }}' | tee /sys/class/drm/"${CARD}"/device/pp_od_clk_voltage
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# set the maximum GPU clock
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echo 's 1 {{ gpu_clock_max }}' | tee /sys/class/drm/"${CARD}"/device/pp_od_clk_voltage
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# set the GPU *memory* clock
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# normally this would appear disregarded, memory clocked at the minimum allowed by the overdrive (OD) range
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# it follows the core clock; if both 0/1 profiles for _it_ are high enough, the memory will follow
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echo 'm 1 {{ gpumem_clock_static }}' | tee /sys/class/drm/"${CARD}"/device/pp_od_clk_voltage
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{% if gpu_mv_offset is defined %}
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# offset GPU voltage {{ gpu_mv_offset }}mV
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echo 'vo {{ gpu_mv_offset }}' | tee /sys/class/drm/"${CARD}"/device/pp_od_clk_voltage
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{% endif %}
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# commit the changes
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echo 'c' | tee /sys/class/drm/"${CARD}"/device/pp_od_clk_voltage
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# force GPU core and memory into highest clocks (fix flickering and poor power management)
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# set manual control mode
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# allows control via 'pp_dpm_mclk', 'pp_dpm_sclk', 'pp_dpm_pcie', 'pp_dpm_fclk', and 'pp_power_profile_mode' files
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echo 'manual' | tee /sys/class/drm/"${CARD}"/device/power_dpm_force_performance_level
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# adjust power limit using multiplier against board capability
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POWER_LIM_OC=$(/usr/bin/awk -v m="$POWER_CAP" -v n={{ gpu_power_multi.overclock }} 'BEGIN {printf "%.0f", (m*n)}')
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echo "$POWER_LIM_OC" | tee "${HWMON_DIR}/power1_cap"
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# avoid display flickering, force OC'd memory to highest clock
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echo '3' | tee /sys/class/drm/"${CARD}"/device/pp_dpm_mclk
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# extract the VR power profile ID number
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PROF_VR_NUM=$(/usr/bin/awk '$0 ~ /VR.*:/ {print $1}' <<< "$PROFILE_MODES")
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# force 'overclocked' profile to 'VR' power/clock heuristics
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# latency/frame timing seemed favorable with relatively-close minimum clocks
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echo "${PROF_VR_NUM}" | tee /sys/class/drm/"${CARD}"/device/pp_power_profile_mode
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