The AWS Deep Learning AMIs for Ubuntu and Amazon Linux now come with newer versions of Chainer 4.4 and Theano 1.0.2 . As with rest of the frameworks, Deep Learning AMIs offers optimized builds of Chainer 4.4 and Theano 1.0.2 that are fine-tuned and fully-configured for high performance deep learning on Amazon EC2 CPU and GPU instances. Deep Learning AMIs automatically deploy the framework builds optimized for the EC2 instance you select when you activate the framework’s virtual environment for the first time.