GPU asynchronous stochastic gradient descent to speed up neural network training

The ability to train large-scale neural networks has resulted in state-of-the-art per-formance in many areas of computer vision. These results have largely come from computational break throughs of two forms: model parallelism, e.g. GPU acceler-ated training, which has seen quick adoption in computer vision circles, and data parallelism, e.g. A-SGD, whose large scale has been used mostly in industry. We report early experiments with a system that makes use of both model paral-lelism and data parallelism, we call GPU A-SGD. We show using GPU A-SGD it is possible to speed up training of large convolutional neural networks useful for computer vision. We believe GPU A-SGD will make it possible to train larger networks on larger training sets in a reasonable amount of time.