Mandelbrot Fractal Renderer

This is a Mandelbrot fractal renderer written in Rust.

Read the corresponding article here: https://gist.github.com/antaz/72e8dcf3446d33a84d1b41aa5538cdc8

1280x720 render using XAOS color palette

Features

• Multithreading with Rayon
• SIMD using AVX2 auto-vectorization
• Command line interface

Build

To build with AVX2 support run the follow command

RUSTFLAGS='-C target-feature=+avx2' cargo build --release

Generate fractals

target/release/mandelbrot-rs -o mandelbrot.ppm
# render in 4k resolution (defaults to 1280x720)
target/release/mandelbrot-rs -w 3840 -h 2160 -o mandelbrot.ppm
# pump up or down the iteration count (defaults to 1000)
target/release/mandelbrot-rs -w 3840 -h 2160 -i 2000 -o mandelbrot.ppm

Benchmarks

benchmark results on an i3-5005U CPU @ 2.00GHz for generating 1280x720 px image with 1000 iterations

Version	CPU utilized	Instructions (B)	Time elapsed (s)
non-parallel	0.999	3.505	1.204244
parallel	3.839	3.485	0.36724
parallel-avx2	3.792	0.864	0.121628