TORQUE is an open source resource manager providing control over
batch jobs and distributed compute nodes. It is a community effort
based on the original *PBS project and, with more than 1,200 patches,
has incorporated significant advances in the areas of scalability,
fault tolerance, and feature extensions contributed by NCSA, OSC,
USC , the U.S. Dept of Energy, Sandia, PNNL, U of Buffalo, TeraGrid,
and many other leading edge HPC organizations.

WWW: http://www.adaptivecomputing.com/products/open-source/torque/