I have used this for load testing before, unfortunately the project is in need of a maintainer, I don't know python, but from the github page:

"ATTENTION: This project has several open pull requests and is in need of a maintainer! If you have experience with EC2, Python and load testing tools and would be interested in taking it over, please open a ticket telling us why and we’ll get back to you. Thanks!"

is anyone fancies it!