karpathy/convnetjs — pull request #1 by JimAllanson (2014-01-05 12:53:17+00:00)
Title: Typed arrays

I had a go at using typed arrays (where available) for w & dw in Vol (and return value of zeros function). Running in Chrome Canary, there seems to be a bit of a performance increase - the first 1000 examples in the MNIST demo went from taking ~16s to ~12s on my machine (Chrome 34.0.1769.2, Windows 8.0).