Towards Performance Analysis of SDFGs Mapped to Shared-Bus Architectures Using Model-Checking
Maher Fakih, Kim Grüttner, Martin Fränzle, Achim Rettberg · 2013
The timing predictability of embedded systems with hard real-time requirements is fundamental for guaranteeing their safe usage. With the emergence of multicore platforms this task became very challenging. In this paper, a model-checking based approach will be described which allows us to guarantee timing bounds of multiple Synchronous Data Flow Graphs (SDFG) running on shared-bus multicore architectures. Our approach utilizes Timed Automata (TA) as a common semantic model to represent software components (SDF actors) and hardware components of the multicore platform. These TA are explored using the UPPAAL model-checker for providing the timing guarantees. Our approach shows a significant precision improvement compared with the worst-case bounds estimated based on maximal delay for every bus access. Furthermore, scalability is examined to demonstrate analysis feasibility for small parallel systems.