[Rochus]

There was a peer-reviewed paper about energy efficiency of programming languages some years ago (see https://greenlab.di.uminho.pt/wp-content/uploads/2017/09/pap...). A JIT seem to have little influence on energy efficiency; there are even big differences between jitted languages; but Python is on the second last place. I have no numbers on what percentage Python itself contributes to the deep learning number crunching; but according to the paper, the overall use of JS could be twenty times higher than that of Python to cause the same energy consumption. Maybe someone has the numbers.