RAPL:Package Power Estimation and capping

RAPL:Package Power Estimation and capping

Hi all.

I read "Intel® 64 and IA-32 Architectures Software Developer’s Manual Volume 3".
Then, in it , I found that RAPL can estimate processors and DIMMs energy.
Also, I found that RAPL can limit power which processors and DIMMs consume.

After that, I looked for information about RAPL.then I found the paper named "RAPL:Memory Power Estimation and Capping", and I read it.

I have a couple of questions about RAPL.

(1)
The paper named "RAPL:Memory Power Estimation and Capping" written in 2010 refers "Memory Power Model", which is "Power = W(act)*A + W(read)*R + W(write)*W + W(cke_h)*CKE_H(adder) + K".
However, this paper doesn't mention "Package Power Model".

How is package power estimated ? I'd like to know Package Power Model. Let me know the paper about package or equality of package power model.

(2)
The paper named "RAPL:Memory Power Estimation and Capping" refers how RAPL caps DRAM power. However, it doesn't mention how RAPL caps package power.

How is package power capped ? Is DVFS or something used?

Thank you.

4 posts / 0 nouveau(x)
Dernière contribution
Reportez-vous à notre Notice d'optimisation pour plus d'informations sur les choix et l'optimisation des performances dans les produits logiciels Intel.

>>>However, this paper doesn't mention "Package Power Model".>>>

Package power model is just an equation which is provided by you in your post.

Do you plan to somehow access and read this data?

Hi iiyapolak.
Would you please see my post more carefully??
I know DRAM power model, but I don't know Package(Processor) power model. 

>> Do you plan to somehow access and read this data?
I have already accessed package energy data. 

>>>Would you please see my post more carefully??
I know DRAM power model, but I don't know Package(Processor) power model.>.>>

Sorry, I simply misunderstood your post.

>>>I have already accessed package energy data.>>>

Did you write your custom driver for that?

Thanks in advance.

Laisser un commentaire

Veuillez ouvrir une session pour ajouter un commentaire. Pas encore membre ? Rejoignez-nous dès aujourd’hui