SGE overview
SGE is a batch-queuing system; it is not grid middleware. SGE is an open-source community effort. It is free to download and use. Some features of SGE are introduced in this section below.
Scheduler, queues and slots SGE includes both a scheduler for allocating resources (CPUs) to computational jobs and a queuing mechanism. Each queue is associated with a number of slots: one computational process runs in each slot; each compute node in the HPC cluster provides one or more slots.