Scalable, distributed monitoring system for high-performancecomputing
Ganglia is a scalable distributed monitoring system for high-performancecomputing systems such as clusters and Grids. It is based on a hierarchical design targeted at federations of clusters. Supports clusters up to 2000 nodes in size.
Xen is a virtual machine monitor for x86 that supports execution of multiple guest operating systems with unprecedented levels of performance and resource isolation. Linux 2.4, 2.6 and NetBSD 2.0 ports are available. FreeBSD, Plan 9 ports on the way.