Online Energy-Aware Scheduling for Deadline-Constrained Applications in Distributed Heterogeneous Systems

Table 1

The used notations in this paper.

Notation	Implication
	The -th processor in the system
	The number of processors
	The -th DAG in the system
	The arrival time of DAG
	The deadline of
	The set of tasks in
	The set of edges between all tasks in
	The -th task in
	The number of tasks in
	The set of predecessors of task
	The set of successors of task
	The data transfer time between and
	The average execution time of
	The actual execution time of task on processor with frequency
	The earliest start time of
	The earliest finish time of
	The earliest time that the processor can execute a task
	Schedule completion time of
	The energy consumption of task on the processor with frequency