Unified Cross-Layer Cluster-Node Scheduling for Heterogeneous Datacenters

In this paper, we present a two-level hierarchical scheduler for datacenters called Qin. The goal of the proposed scheduler is to exploit increased server heterogeneity. It combines in a unified approach cluster and node level scheduling algorithms, and it can consider specific optimization objectives including job completion time, energy usage, and energy delay product (EDP). Its novelty lies in the unified approach and in modeling interference and heterogeneity. Experiments on a real cluster demonstrate the proposed approach outperforms state-of-the-art schedulers by 10.2 % in completion time, 38.65 % in energy usage, and 41.98% in EDP.