Deprecated DDR RAPL on newer Intel CPUs

[IonutBalosin]

Hello,

  I recently purchased a 13th Gen Intel(R) Core(TM) i9-13900HX CPU, and according to the documentation I found, the "DDR Running Average Power Limit (DDR RAPL)" has been deprecated. You can refer to the following link for more details: https://edc.intel.com/content/www/br/pt/design/products/platforms/details/raptor-lake-s/13th-generation-core-processors-datasheet-volume-1-of-2/006/deprecated-technologies/

  Previously, I explicitly used DDR RAPL on an older Intel® Core™ i7-8550U Processor to monitor DDR energy. However, since it is no longer available on newer Intel CPUs, I would like to ask whether it has been incorporated into other domains, such as 'psys,' or not.

I have not found any documentation explicitly mentioning this, which is why I am reaching out for clarification.

For your reference, the "$ powercap-info -p intel-rapl" command reports the following zones:

- Zone 0
-- name: package-0
-- Zone 0:0
--- name: core
-- Zone 0:1
--- name: uncore

- Zone 1
-- name: psys

To me, it seems that if I want to sum up the entire energy reported by the CPU in my case, it would be psys + package-0, considering that package-0 already includes the core and uncore. However, I'm uncertain about the DDR. Is this assessment/formula correct? Please confirm/comment.

Thank you!

[Alberto_R_Intel]

IonutBalosin, Thank you for posting in the Intel® Communities Support.

We will be more than glad to assist you with this matter. 

In order for us to provide the most accurate assistance on this scenario:

What is the model of your motherboard?

Which Operating System are you using?

Are you a developer?

Are you working on a project?

Are you building, designing, or modifying hardware/software?

Are you working with a specific Intel® hardware/software platform?

Any questions please let me know.

Regards,

Albert R.

Intel Customer Support Technician

[IonutBalosin]

Hello, 

    Please see my answers below.

What is the model of your motherboard? - answer: NP5x_6x_7x_SNx

Which Operating System are you using? - answer: Linux ubuntu 6.5.0-14-generic

Are you a developer? - answer: yes

Are you working on a project? - answer: on free time, yes; e.g., https://github.com/ionutbalosin/jvm-energy-consumption

Are you building, designing, or modifying hardware/software? - answer: yes, developing software for reading the energy consumption using the RAPL interface

Are you working with a specific Intel® hardware/software platform? - answer: Intel 13th Gen Intel(R) Core(TM) i9-13900HX

Thank you

Ionut Balosin

[Alberto_R_Intel]

Hello IonutBalosin, You are very welcome. Thank you very much for providing that information.

I will do further research on this matter to try to gather the information you are looking for or to point you in the right direction for support. As soon as I get any updates, I will post all the details on this thread.

Regards,

Albert R.

Intel Customer Support Technician

[Alberto_R_Intel]

Hello IonutBalosin, I just received an update on this matter.

After reviewing the case, in order to gather the information that you are looking for, please visit, log in, and submit your inquiry on our Intel® Developer Zone website for further assistance on this subject:

https://www.intel.com/content/www/us/en/developer/overview.html#gs.3gs9hl

Regards,

Albert R.

Intel Customer Support Technician