FLOSS: FLOw Sensitive Scheduling on Mobile Platforms

Today's mobile platforms have grown in sophistication to run a wide variety of frame-based applications. To deliver better QoS and energy efficiency, these applications utilize multi-flow execution, which exploits hardware-level parallelism across participating accelerators in the SoC. Our study shows that multi-flow execution increases memory pressure, and motivates us to propose a rate-based memoryscheduling scheme, called FLOSS, that considers a flow, individual frames of a flow, and any sharing of IPs across concurrent flows to schedule memory requests. Experimental results indicate that FLOSS provides 12% QoS improvement over baseline FR-FCFS scheme, and outperforms two QoS-aware schemes in multi-flow execution scenarios.