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[http://www.clusterresources.com/pages/products/torque-resource-manager.php Torque] - 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
 
[http://www.clusterresources.com/pages/products/torque-resource-manager.php Torque] - 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
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[http://www.hpccommunity.org/index.php?pageid=lava Platform Lava] is an open source entry-level workload scheduler designed to meet a wide range of workload scheduling needs for clusters up to 512-nodes. Lava is available via the [http://www.hpccommunity.org/ HPCCommunity site] and is also included as a component of Platform Cluster Manager (PCM).
  
 
[http://slurm.schedmd.com/ SLURM] is an open-source workload manager designed for Linux 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.
 
[http://slurm.schedmd.com/ SLURM] is an open-source workload manager designed for Linux 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.
 
[http://www.openlava.org/ openlava] is open-source software for distributed resource management. It is a fork of Platform Lava, which was positioned by Platform Computing as an entry-level workload management system. The not very well known fact is that Platform Lava is actually based on Platform LSF™ from version 4.2, and that this version of Platform LSF was in use at many companies who would be well characterized as "beyond entry-level" and certainly beyond the incorrectly advertised cluster size of 512 nodes. Scalable and robust, openlava is suitable for heavy duty production clusters, with hundreds of nodes, thousands of cores and jobs.
 

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