Priority is the one of the most challenging issues in task scheduling since it is necessary to schedule the tasks that have the minimum deadline earlier than the tasks that have the maximum deadline. In addition, prioritization is also considered in the workflows, where all the tasks are ranked on the basis of parental prioritization.

An effective scheduling algorithm schedules the task based on its priority. The priority tasks are assigned to the resources that execute the task with the minimum makespan for achieving the user-defined requirement.