Multicommodity games in public-cloud markets considering subadditive resource demands

Abstract

In still developing, public cloud-computing markets, prices for virtual machine (VM) offerings fluctuate, and not just for spot/preemptible instances. Moreover, some (particularly derivative) providers allow for fine-grain initial resource provisioning and dynamic reprovisioning of VMs. In this preliminary study, we consider long-lived tenants of a public cloud under resource-based service-level agreements. For noncooperative aggregative multicommodity (plural IT resource) games among them, conditions are established for an interior Nash equilibrium and an exact potential (giving convergence to Nash equilibrium). Also discussed are extensions to plural IT resource demands that are subadditive in workload intensity.