About this code

This repository contains code for matrix multiplication using Hilbert Curves.

The original code (2) is part of @j2kun's code for his next book 3. It was written in Python -- but Python did not show the expected performance benefit of using the Hilbert Curve for matrix multiplication (as compared to a naive multiplication).

Thus I decided to give it a go in a compiled language.

How to run

Install a Rust toolchain from here: https://rustup.rs
Run cargo run --release
Observe the following output:

Initial data generation: 0.061384752s
hilbert data preprocessing: 0.21851613s
Naive: 0.0115141s (0.0005757049999999999s per)
Hilbert: 0.0090037s (0.000450185 s per)
Improvement: 21.802833048175707%

(Tested on my M1 Macbook Air, RustC 1.56.0)

Apple Silicon devices

There is a feature flag, called macos-perf, which provides more details on macOS M1-based computers.

Run: sudo cargo run --features macos-perf --release --quiet --bin example to see more detailed results.

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