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Co-Run Scheduling with Power Cap on Integrated CPU-GPU Systems

This paper presents the first systematic study on co-scheduling independent jobs on integrated CPU-GPU systems with power caps considered. It reveals the performance degradations caused by the co-run contentions at the levels of both memory and power. It then examines the problem of using job co-scheduling to alleviate the degradations in this less understood scenario. It offers several algorithms and a lightweight co-run performance and power predictive model for computing the performance bounds of the optimal co-schedules and finding appropriate schedules. Results show that the method can efficiently find co-schedules that significantly improve the system throughput (9-46% on average over the default schedules).