Free Elasticity and Free CPU Power for Scientific Workloads on IaaS Clouds
Recent Infrastructure as a Service (IaaS) solutions, such as Amazon's EC2 cloud, provide virtualized on-demand computing resources on a pay-per-use model. From the user point of view, the cloud provides an inexhaustible supply of resources, which can be dynamically claimed and released. In the context of independent tasks, the main pricing model of EC2 promises two exciting features that drastically change the problem of resource provisioning and job scheduling. The authors call them free elasticity and free CPU power. Indeed, the price of CPU cycles is constant whatever the type of CPU and the amount of resources leased.