Clarification on Power vs. Energy in CodeCarbon Calculations

[RafiullahOmar]

Description

How does CodeCarbon differentiate between 'power' and 'energy' in its calculations? Could someone clarify how CodeCarbon handles these two concepts?

What I Did

After a quick search, I got the feeling that these terms are used interchangeably in some contexts.

[benoit-cty]

Thanks for reporting this.

We try to consistently use Energy = Power * Time and Power = Energy / Time , can you tell where there still have mistake ?

[RafiullahOmar]

Actually, after a quick review, I couldn't find out if they are dealt with differently and what the tracker returns: power or energy. I assumed power, but for confirmation, I had a quick review and couldn't find it

[benoit-cty]

We return the sum of energy, we also return power but it will be the last power, not the mean of all measured power :

codecarbon/codecarbon/emissions_tracker.py

Line 711 in e6d1ca5

total_emissions = EmissionsData(

[RafiullahOmar]

Is there any possibility to get the mean of all power for a specific task same like we get the energy?

[benoit-cty]

You could divide the energy by the duration to get the mean power. So I don't know if implementing a mean by adding a sum and a counter make sense.

[headscott]

According to the question about mean power: isn't cpu_power, gpu_power and ram_power the average use of Watt per second? So if I add these 3 values, I am getting the average power for gpu, cpu and ram per second?

[benoit-cty]

Looking at the code, I think it's only the last measured power that is stored.