A simple numeric performance comparison between WebAssembly and Javascript
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A simple numeric performance comparison for WebAssembly vs. Javascript.

This repository contains code to compare the performance of the nbody benchmark from the Computer Language Benchmarks Game and some custom modifications for the javascript versions

The results from my machine are available on my blog.

Feel free to send me pull requests for any correction or improvements.

#How to run

The javascript versions can simply be run from the browser. You might want to start it via a simple web server (e.g. http-server .) and open the nbody.html file in each directory. There's no build step for javascript necessary.

The java version is compiled with javac nbody and run with java nbody 50000000. It's the Java #4 version from the Computer Language Benchmarks Game

The C versions in the c directory can be compiled with gcc -O3 nbody.c -o nbody and gcc -O3 -fomit-frame-pointer -march=native -mfpmath=sse -msse3 nbody_fastest.c -o nbody_fastest They are the original version and version #4.

The WebAsssembly version is compiled with emcc nbody.c -O3 -s WASM=1 -s SIDE_MODULE=1 -o nbody.wasm. You'll have to setup emscripten and binaryen as described on Compile Emscripten from Source