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tuned-amdgpu

Hacky solution to integrate AMDGPU power profile control in tuned with Ansible

Takes a list of existing tuned profiles and creates new ones based on them. These new profiles include AMDGPU power/clock parameters

Warning: Only tested with RX6000 series GPUs, Navi or older may not work properly.

Profiles

An example of the output/provided profiles follow

Output profile Description
balanced-amdgpu-default Includes the existing balanced tuned profile. Only adjusts the GPU power limit (typically lower), clocks/voltage curve remain the default.
desktop-amdgpu-VR Includes the existing desktop tuned profile. Adjusts the GPU power limit, clocks, and the voltage curve -- using the predefined VR profile in the driver
latency-performance-amdgpu-custom Includes the existing latency-performance tuned profile. Adjusts the GPU power limit, clocks, and the voltage curve -- using the custom profile in the driver. This opens up further tweaking through the driver (currently manual). see: pp-dpm

Note: This is non-exhaustive, see the variables base_profiles and amdgpu_profiles below for the (default) sources of the merged profile mapping

Notable variables

  • Power control: (float) multipliers to determine power limits from board power capability
    • power_max_default_multi: Controls power for the generated default GPU profile. Provided: 0.75 for 75% board power capability.
    • power_max_custom_multi: Controls power for the generated custom GPU profile. Provided: 1.0 for 100% board power capability.
  • card: Sets the card# to use in the qualified sysfs path /sys/class/drm/{{ card }}/device/pp_power_profile_mode. Default: card0
  • gpu_mv_offset: optional, applies offset to GPU voltage, eg: +100 = to boost GPU core voltage 100mV or 0.1V. Can undervolt.
  • base_profiles: List of base tuned profiles to clone in the new AMDGPU profiles. Defaults (based on Fedora):
    • balanced
    • desktop
    • latency-performance
    • network-latency
    • network-throughput
    • powersave
    • virtual-host

amdgpu_profiles: Mapping of AMDGPU power profiles (name/value) defined in the sysfs path above. Varies, sample is with a 6900XT. Defaults below

amdgpu_profiles: # statically defined mapping of the contents in /sys/class/drm/card*/device/pp_power_profile_mode
  default:       # more may be added, but do not remove default/custom. new profiles require a script template, see 'templates'
    pwrmode: 0
  VR:
    pwrmode: 4
  custom:
    pwrmode: 6