Unless you have a system with 4-8 cores and SIMD, and you want to leave a multiple of performance on the table: http://arstechnica.com/information-technology/20

Unless you have a system with 4-8 cores and SIMD, and you want to leave a multiple of performance on the table: http://arstechnica.com/information-technology/2013/05/native-level-performance-on-the-web-a-brief-examination-of-asm-js/3/ http://arstechnica.com/information-technology/2013/05/native... For example, 1200% slower in Mandelbrot rendering with asm.js vs OpenMP C code.