External job submission and execution controls
The job submission and execution controls use external, site-specific executable files to validate, modify, and reject jobs; and to transfer data and modify the job execution environment.
By writing external submission (esub), external post-submission (epsub), and external execution (eexec) binary files or scripts, you can, for example, prevent the overuse of resources, specify execution hosts, or set required environment variables that are based on the job submission options. In addition, you can use external post-submission (epsub) binary files or scripts to communicate with external components using job submission information such as job ID or queue name.