Since my last post, I discovered the Julia language. Like Lua, it is a high-performance programming language ideally suited to numeric analysis. Depending on how I get on with Julia, I may decide to run Mocha (a machine learning library for Julia) on an AWS instance instead of Torch.
Tofay I launched a virtual machine or instance running Ubuntu 14.4, on AWS. That was a straightforward process. Next .. to configure the instance so that I can install Torch.