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update to reflect dynamic card discovery

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Josh Lay 2022-11-03 20:13:40 -05:00
parent 471e055ca5
commit 4dff0b95ab
Signed by: jlay
GPG key ID: B265E45CACAD108A
1 changed files with 7 additions and 2 deletions
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@ -4,7 +4,13 @@ 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, it is probable that older AMD GPUs will not work properly. Use at your own risk!
An attempt is made to discover the active GPU using the 'connected' state in the `DRM` subsystem, example:
```
$ grep -ls ^connected /sys/class/drm/*/status | grep -o card[0-9] | sort | uniq | sort -h | tail -1
card1
```
_Warning_: This is only tested with `RX6000` series GPUs, it is probable that older AMD GPUs will not work properly. Use at your own risk!
## Profiles
@ -29,7 +35,6 @@ These are the variables you're likely to want to change. They are defined in [p
| gpu_clock_min | Sets the minimum (dynamic) GPU clock for the non-default `amdgpu` profiles | 2000, results in 2Ghz |
| gpu_clock_max | Sets the maximum (dynamic) GPU clock for the non-default `amdgpu` profiles | 2615, results in 2.62Ghz (rounded) -- mild overclock |
| gpumem_clock_max | Sets the _static_ memory clock for the GPU. This is *not* the _effective_ data rate. That is a multiple of this depending on the type of VRAM.<br/><br/>To avoid flickering this does *not* change dynamically with load. | 1075, results in 1.1Ghz (base, rounded) |
| card | Set the `card#` for the card to use.<br/><br/>For a hint if this needs changed:<br/>`ls -lad /sys/class/drm/card[0-9]*` | `card0` -- assumes the first GPU |
| gpu_mv_offset | GPU core voltage offset. Takes +/- some integer in millivolts. Can be used to both over _and_ under volt. | `-25` (undervolt `25mV` or `0.025V`) |
| base_profiles | List of base tuned profiles to clone in the new AMDGPU profiles. Defaults based on `Fedora` | <ul><li>`balanced`</li><li>`desktop`</li><li>`latency-performance`</li><li>`network-latency`</li><li>`network-throughput`</li><li>`powersave`</li><li>`virtual-host`</li>|
| amdgpu_profiles | Dictionary mapping the AMDGPU power profiles found in `/sys/class/drm/card*/device/pp_power_profile_mode`.<br/><br>Allows adjustment to the automatic power/clock handling in the GPU using either predefined profiles or `custom`<br/><br/>More may be added, only three GPU power profiles are provided -- `default`, `VR`, and `custom`.| <pre>default:<br/> pwrmode: 0<br/>VR:<br/> pwrmode: 4<br/>custom:<br/> pwrmode: 6</pre>|