Since October 2009 CSCS uses xCAT in some production environments. xCAT is an open source HPC cluster management. It is agile, extendable, and based on years of system administration best practices and experience.
Carmelo Ponti of CSCS contributed to the project with a “Getting Started” document »
Please contact Carmelo (cponti at cscs.ch) for additional information or to exchange your experiences.