A Comparison of robustness metrics for scheduling DAGs on heterogeneous systems

A schedule is said robust if it is able to absorb some degree of uncertainty in tasks duration while maintaining a stable solution. This intuitive notion of robustness has led to a lot of different interpretations and metrics. However, no comparison of these different metrics have ever been preformed. In this paper, we perform an experimental study of these different metrics and show how they are correlated to each other in the case of task scheduling, with dependencies between tasks.