Slurm is an open-source workload manager designed for *nix clusters
of all sizes. It provides three key functions. First it allocates
exclusive and/or non-exclusive access to resources (computer nodes)
to users for some duration of time so they can perform work. Second,
it provides a framework for starting, executing, and monitoring
work (typically a parallel job) on a set of allocated nodes. Finally,
it arbitrates contention for resources by managing a queue of
pending work.

WWW: http://slurm.schedmd.com/