[Users] CPU and Memory sharing

Hi all , I would like to know whether CPU or memory sharing among physical nodes are possible in ovirt . Suppose I have 3 physical nodes in my cluster with 24GB RAM and 8 cores each . Then one of my client needs a VM with 32GB RAM and 12 cores , that means vm need resources more than a physical server . So is that possible in ovirt cluster .? If it is not directly possible is they are any cloning & Load balancing methods like in amzon auto scaling ?