Nimbus

"I've been around HPC for 10 years and this is without question the coolest thing I've seen in a long time!"

Nimbus is an open source toolkit that allows you to turn your cluster into an Infrastructure-as-a-Service (IaaS) cloud. Feature highlights include:

Two sets of Web Service interfaces: Amazon EC2 WSDLs and Grid community WSRF, read more about interfaces...
Implementation based on the Xen hypervisor (KVM coming soon), read more about supported virtualization technologies...
Can be configured to use familiar schedulers like PBS or SGE to schedule virtual machines, read more about the workspace pilot...
Launches self-configuring virtual clusters with one click, read more about the context broker...
Defines an extensible architecture that allows you to customize the software to the needs of your project, read more about extensiblity...

To see what it's like to use Nimbus as a client, see the Science Clouds pages.