Abstract:

With the development of technology and the increasing growth of applications and requirements in embedded realtime systems, multicore processors will be adopted in embedded realtime systems for its high performance and low power features. However, the multicore architecture is hard, even impossible to satisfy the requirement of realtime and the predictability of WCET. Starting with the shared resources, we analyze the influence of onchip shared resources and offchip resources on WCET analysis, and discuss various WCET methods. Two WCET models are introduced: multicore static WCET model and multicore hybrid WCET model. At last, the multicore design rule for the realtime application is proposed.

Key words: multi-core architecture;embedded realtime system;realtime task;WCET