Tammo Tesmer ttesmer

## aoc-tips.md

      
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                mcpower
                / aoc-tips.md
            
            
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              March 27, 2024 03:28
            
              
                Tips for getting on the Advent of Code leaderboard
              
          
    Hi, I'm mcpower. I've done Advent of Code seriously for two years now in Python, placing 9th in 2018 and 12th in 2017. This year, I'm taking a break from aiming for the leaderboard - while it's fun and all, it is a bit stressful at times (the good kind of stress, though!). As such, I'd like to share a few tips for anyone wanting to aim for the leaderboard.
This is everything that worked for me. Your mileage may vary, though - don't take this as gospel, see what works for you.
Go fast

Go fast.

  
## Matrix.md

      
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                nadavrot
                / Matrix.md
            
            
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              May 8, 2024 18:53
            
              
                Efficient matrix multiplication
              
          
    High-Performance Matrix Multiplication

This is a short post that explains how to write a high-performance matrix
multiplication program on modern processors. In this tutorial I will use a
single core of the Skylake-client CPU with AVX2, but the principles in this post
also apply to other processors with different instruction sets (such as AVX512).
Intro

Matrix multiplication is a mathematical operation that defines the product of