Memory Bandwidth Napkin Math
I’ve been fascinated by the 'napkin math' topic recently, but felt a need for a way to routinely practise. It’s an acquired skill once it’s effortless to do the order of magnitude calculations in a meeting, or zipping through possible solutions on a whiteboard (what I imagine Jeff Dean does). Will it be fast enough? How much will it cost? Does the benchmarked performance match the order of magnitude we’d expect?To practise, I created a newsletter last year with a monthly problem that may be of interest to others wanting to sharpen their napkin math: https://sirupsen.com/napkin/