View figure.LoadLeveler is a job management system that allows users to run more jobs in less time by matching the jobs' processing needs with the available resources. LoadLeveler schedules jobs, and provides functions for building, submitting, and processing jobs quickly and efficiently in a dynamic environment.
Figure 1 shows the different environments to which LoadLeveler can schedule jobs. Together, these environments comprise the LoadLeveler cluster. An environment can include heterogeneous clusters, dedicated nodes, and the RISC System/6000 Scalable POWERparallel System (SP).
Figure 1. Example of a LoadLeveler Configuration
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In addition, LoadLeveler can schedule jobs written for NQS to run on machines outside of the LoadLeveler cluster. As Figure 1 also illustrates, a LoadLeveler cluster can include submit-only machines, which allow users to have access to a limited number of LoadLeveler features. This type of machine is further discussed in Roles of Machines.