74 lines
3.6 KiB
Django/Jinja
74 lines
3.6 KiB
Django/Jinja
#!/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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{# done this way to avoid issues with the card number possibly shifting after playbook run #}
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# dynamically determine the connected GPU using the DRM subsystem
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CARD=$(/usr/bin/grep -ls ^connected /sys/class/drm/*/status | /usr/bin/grep -o 'card[0-9]' | /usr/bin/sort | /usr/bin/uniq | /usr/bin/tail -1)
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{# begin the templated script for 'default' profiles to reset state #}
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{% if 'default' in item.0.key %}
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# set power state transition heuristics to default
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echo '{{ item.0.value.pwrmode }}' | tee /sys/class/drm/"${CARD}"/device/pp_power_profile_mode
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# set control mode back to auto
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# attempts to dynamically set optimal power profile for (load) conditions
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echo 'auto' | tee /sys/class/drm/"${CARD}"/device/power_dpm_force_performance_level
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# reset any existing profile clock changes
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echo 'r' | tee /sys/class/drm/"${CARD}"/device/pp_od_clk_voltage
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# give default profile {{ power_max_default_multi * 100.0 |int }}% of the max power capability
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# {{ power_cap_default|int/1000000 }} Watts of {{ power_max|int/1000000 }} total
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echo '{{ power_cap_default }}' | tee {{ powercap_set.files.0.path }}
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{% else %}
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{# begin the templated script for non-default AMD GPU profiles, eg: 'VR' or '3D_FULL_SCREEN' #}
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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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# only interested in 'pp_power_profile_mode' for power and 'pp_dpm_mclk' for memory clock (flickering).
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# GPU clocks are dynamic based on (load) condition
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echo 'manual' | tee /sys/class/drm/"${CARD}"/device/power_dpm_force_performance_level
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# set power state transition heuristics to '{{ item.0.key }}' profile
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echo '{{ item.0.value.pwrmode }}' | tee /sys/class/drm/"${CARD}"/device/pp_power_profile_mode
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# give this profile {{ power_max_custom_multi * 100.0 |int }}% of the max power capability
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# {{ power_cap_custom|int/1000000 }} Watts of {{ power_max|int/1000000 }} total
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echo '{{ power_cap_custom }}' | tee {{ powercap_set.files.0.path }}
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# set the minimum GPU clock
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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 maximum GPU *memory* clock
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echo 'm 1 {{ gpumem_clock_max }}' | 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/"${CARD}"/device/pp_od_clk_voltage
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# force GPU memory into highest clock (fix flickering)
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# pp_dpm_*clk settings are unintuitive, giving profiles that may be used
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# opt not to set the others (eg: sclk/fclk) - those should remain for benefits from the curve
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echo '3' | tee /sys/class/drm/"${CARD}"/device/pp_dpm_mclk
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{% endif %}
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