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Education and Innovation in Embedded Systems Design

USI Università della Svizzera italiana, USI Faculty of Informatics, Advanced Learning and Research Institute USI Università della Svizzera italiana USI Faculty of Informatics USI Advanced Learning and Research Institute
TitleDesign Space Exploration Supporting Run-time Resource Management
Publication TypeBook Chapter
Year of Publication2011
AuthorsAvasare, P., C. Ykman-Couvreur, G. Vanmeerbeeck, G. Mariani, G. Palermo, C. Silvano, and V. Zaccaria
Book TitleMulti-objective design space exploration of multiprocessor SoC architectures: the MULTICUBE approach
CityNew York, USA

Running multiple applications optimally in terms of Quality of Service (e.g., performance and power consumption) on embedded multi-core platforms is a huge challenge.Moreover, current applications exhibit unpredictable changes of the environment and workload conditions which makes the task of running them optimally even more difficult. This dynamic trend in application runs will grow even more in future applications. This paper presents an automated tool flow which tackles this challenge by a two-step approach: first at design-time, a Design Space Exploration (DSE) tool is coupled with a platform simulator(s) to get optimum operating points for the set of target applications. Secondly, at run-time, a lightweight Run-time Resource Manager (RRM) leverages the design-time DSE results for deciding an operating configuration to be loaded at run-time for each application. This decision is performed dynamically, by taking into consideration available platform resources and the QoS requirements of the specific use-case. To keep RRM execution and resource overhead at minimum, a very fast optimisation heuristic is integrated. Application of this tool-flow on a real-life multimedia use case (described in Chapter 9 of the book of this paper) will demonstrate a significant speedup in optimisation process while maintaining desired Quality of Service.