OSv

"OS^v is the open source operating system designed for the cloud. Built from the ground up for effortless deployment and management, with superior performance.

OS^v reduces the memory and cpu overhead imposed by a traditional OS. Scheduling is lightweight, the application and the kernel cooperate, and memory pools are shared. OS^v provides unparalleled short latencies and constant predictable performance, which translates directly to capex savings by reducing the size and number of OS instances.

OS^v is used in MIKELANGELO, a project designed to bridge the gap between HPC and Cloud, by bringing cloud flexibility to HPC and HPC efficiency and power to the cloud"

http://osv.io/

https://www.mikelangelo-project.eu/