43 lines
2.5 KiB
Markdown
43 lines
2.5 KiB
Markdown
# tuned-amdgpu
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Hacky solution to integrate AMDGPU power profile control in `tuned` with Ansible
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Takes a list of existing `tuned` profiles and creates new ones based on them. These new profiles include AMDGPU power/clock parameters
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## Profiles
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An example of the output/provided profiles follow
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| Output profile | Description |
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| `balanced-amdgpu-default` | Includes the existing `balanced` tuned profile. Only adjusts the GPU power limit (typically lower), clocks/voltage curve remain the default. |
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| `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 |
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| `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](https://docs.kernel.org/gpu/amdgpu/thermal.html#pp-dpm) |
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**Note**: This is non-exhaustive, see the variables `base_profiles` and `amdgpu_profiles` below for the (default) sources of the merged profile mapping
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## Notable variables
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- Power control: (float) multipliers to determine power _limits_ from board power _capability_
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- `power_max_default_multi`: Controls power for the generated `default` GPU profile. Provided: `0.75` for 75% board power capability.
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- `power_max_custom_multi`: Controls power for the generated `custom` GPU profile. Provided: `1.0` for 100% board power capability.
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- `card`: Sets the `card#` to use in the qualified `sysfs` path `/sys/class/drm/{{ card }}/device/pp_power_profile_mode`. Default: `card0`
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- `gpu_mv_offset`: optional, applies offset to GPU voltage, eg: `+100` = to boost GPU core voltage `100mV` or `0.1V`. Can undervolt.
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- `base_profiles`: List of base tuned profiles to clone in the new AMDGPU profiles. Defaults (based on `Fedora`):
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- `balanced`
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- `desktop`
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- `latency-performance`
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- `network-latency`
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- `network-throughput`
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- `powersave`
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- `virtual-host`
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`amdgpu_profiles`: Mapping of AMDGPU power profiles (`name`/`value`) defined in the `sysfs` path above. Varies, sample is with a 6900XT. Defaults below
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```
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amdgpu_profiles: # statically defined mapping of the contents in /sys/class/drm/card*/device/pp_power_profile_mode
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default: # more may be added, but do not remove default/custom. new profiles require a script template, see 'templates'
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pwrmode: 0
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VR:
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pwrmode: 4
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custom:
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pwrmode: 6
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```
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