Parametric executions require that the same application is executed numerous times.
A single application is run under a wide range of input conditions and the results of these different runs are collected together. Parametric executions are ideally suited to run on large computing clusters, since clustered servers produce a lot of jobs, often exceeding thousands. The power of distributed computing can be quickly applied to parametric studies of existing applications. No modifications to existing programs and no additional programs are required. To perform parametric executions, the user simply specifies input parameters and commands to be executed.