Using the Jetstream Research Cloud to Provide Science Gateway Resources

We describe the use of the Jetstream research-cloud, a purpose-built system with the goal of supporting "long-tail" research by providing a flexible, on-demand research infrastructure, to provide scalable back-end resources for science gateways. In addition to providing cloud-like resources for on-demand science, Jetstream offers the capability to instantiate long-running clusters which support science gateways. Science gateways are web-based systems built on computationalinfrastructure which provide commonly-used tools to a community of users. We created a persistent clusteron the Jetstream system which is connected to the SEAGrid science gateway and provides additional compute resources for a variety of quantum chemistry calculations. We discussthe further application of toolkits provided by the Extreme Science and Engineering Discovery Environment (XSEDE) tobuild general-purpose clusters on the research cloud.