Open Source Workload Management Software
OpenPBS is the original version of the Portable Batch System, a queuing system developed for NASA in the early 1990s. OpenPBS operates on networked multi-platform UNIX environments. It can be downloaded here from this site for no charge.
Why Convert to PBS Professional
With the introduction of the 10.0 release of PBS Professional, Altair has blurred the lines between the Open-source world and the commercial-software world. In PBS Professional 9.0, we now have a floating Flex-based license mechanism that allows administrators the flexibility to license nodes anywhere in their environment, whenever they wish. We have also greatly lowered the cost on a per-license basis so that the purchase cost of a commercially developed and supported workload manager is much lower than the administrative cost of the Open-source version. Finally, PBS Professional has the reliability, scalability, serviceability and advanced features you would expect in a commercial product.