Differentiable programming is becoming more and more popular. If there were accurate models of memory/cache behavior, we could predict how code changes would ch

Differentiable programming is becoming more and more popular. If there were accurate models of memory/cache behavior, we could predict how code changes would change performance due to CPU behavior, and might be able to get programming tools that can make this way more visible to people who don't know about it. But I have my doubts it will be as easy as I make it sound - and I don't think I make it sound all that easy either :)