8.1 Optimization Overview
Moab optimizes cluster performance. Every policy, limit, and feature is designed to allow maximum scheduling flexibility while enforcing the required constraints. A driving responsibility of the scheduler is to do all in its power to maximize system use and to minimize job response time while honoring the policies that make up the site's mission goals.
However, as all jobs are not created equal, optimization must be abstracted slightly further to incorporate this fact. Cluster optimization must also focus on targeted cycle delivery. In the scientific HPC community, the true goal of a cluster is to maximize delivered research. For businesses and other organizations, the purposes may be slightly different, but all organizations agree on the simple tenet that the cluster should optimize the site's mission goals.
To obtain this goal, the scheduler has several levels of optimization it performs:
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