Experiments with WCET-oriented programming and the single-path architecture

The single-path software/hardware architecture has been conceived with the goal to support real-time task execution with highly predictable timing. By using WCET-oriented programming (WCET... worst-case execution time) and then converting WCET-oriented code to single-path code we do not only aim at producing code with good temporal predictability but also target at a high worst-case performance. First experiments presented in this paper show that the combination of the two concepts yields indeed code with constant, hence fully predictable execution times. Further, these execution times are very competitive compared to the worst-case execution times of the alternative, non WCET-oriented solutions of the programming problems we investigated.