It's showcase more than being take home assignment. I couldnt understand what the task is ,only performance comparisons between their LLM
The task is ill-defined.
You make it faster
Fewer instructions doesn't mean it's faster. It can be faster but it's not guaranteed in general. Obvious counterexample is single threaded vs multi-threaded code. Single threaded code will have fewer instructions but won't necessarily be faster.
It does in this case; you can read the assignment to see that it is all single-threaded