nadavrot

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

gist:a67ba4695c223a905ff108ed8b9a342f

// Changed awaiter to not leak memory on suspension thanks to /u/Enemii.

#include <experimental/coroutine>
#include <iostream>
#include <memory>
#include <optional>
#include <utility>

template<typename T>
class shared_optional {