Linux 6.6 AMDGPU Driver To Expose Current & Average Power For Capable GPUs

[phoronix]

Phoronix: Linux 6.6 AMDGPU Driver To Expose Current & Average Power For Capable GPUs

On Friday AMD sent out another pull request of AMDGPU/AMDKFD driver changes for the upcoming Linux 6.6 merge window. With the Linux 6.5 release due out likely in one week and the cut-off having passed for new "feature" code for DRM-Next, this latest AMDGPU pull request was centered around bug-fixes but also with a few minor additions...

https://www.phoronix.com/news/Linux-6.6-AMDGPU-More-HWMON

[Gusar]

Niiiice! Currently there's a PPT sensor reading, but it's just an estimate. Getting an accurate consumption reading is simply awesome.

[avis]

Niiiice! Currently there's a PPT sensor reading, but it's just an estimate. Getting an accurate consumption reading is simply awesome.

Yours truly has asked for this change. I hoped it would be backported to stable as well, maybe it will be.

A Linux hater they say. Sometimes I just wanna kill myself hearing that.

[shmerl]

I still don't get why hmwon can't expose it for CPUs too. There is rapl, but sensors don't access it.

[agd5f]

I still don't get why hmwon can't expose it for CPUs too. There is rapl, but sensors don't access it.

The information about the CPU is available from the GPU driver, it's just not clear on how to expose that in hwmon since they are CPU attributes.

[shmerl]

The information about the CPU is available from the GPU driver, it's just not clear on how to expose that in hwmon since they are CPU attributes.

Oh, that's in case it's an APU? Though new AMD desktop CPUs are all APUs now.

[agd5f]

Oh, that's in case it's an APU? Though new AMD desktop CPUs are all APUs now.

Yes, we export more or less the entire state (CPU and GPU) via sysfs (https://docs.kernel.org/gpu/amdgpu/t...ml#gpu-metrics) and you can use umr (https://gitlab.freedesktop.org/tomstdenis/umr) to decode it.

[shmerl]

Yes, we export more or less the entire state (CPU and GPU) via sysfs (https://docs.kernel.org/gpu/amdgpu/t...ml#gpu-metrics) and you can use umr (https://gitlab.freedesktop.org/tomstdenis/umr) to decode it.

That's cool. It would be nice to plumb at least CPU power reading to sensors, so it can be easily plugged into monitor tools like KDE system monitor. GPU power reading is already there.

[xcom]

Vega56 will be supported?

[agd5f]

Vega56 will be supported?

vega10 only supports current power via the SMU. That said, you could do your own averaging if you want the average power.