Roofline model

https://en.wikipedia.org/wiki/Roofline_model

For determining memory bound vs compute bound tasks

Arithmetic Intensity

The arithmetic intensity $I$ also referred to as operational intensity is the ratio of the work $W$ (usuallly in $FLOPs$ or Floating Point Operations) to the memory traffic $Q$ ($bytes$)

$I=\frac{W}{Q}$

It denotes the number of operations per byte of memory traffic. $(FLOPSs/byte)$

Rereferences

1. “Computer Architecture: A Quantitative Approach” Book, chapter 4 : SIMD and GPU programming