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IDT Open Seminar: Early Execution Time Estimation through Automatically Generated Timing Models


Peter Altenbernd , Peter Altenbernd



Start time:

2013-10-03 14:15

End time:

2013-10-03 16:15



Contact person:


Traditional timing analysis, such as Worst-Case Execution Time (WCET) analysis, is normally applied only in the late stages of embedded system software development, when the hardware is available and the code is compiled and linked. However, preliminary timing estimates are often needed in early stages of system development as an essential prerequisite for the configuration of the hardware setup and dimensioning of the system. During this phase the hardware is often not available, and the code might not be ready to link. This article describes an approach to predict the execution time of software through an early, source-level timing analysis. A timing model for source code is automatically derived from a given combination of hardware architecture and compiler. The model is identified from measured execution times for a set of synthetic training programs, compiled for the hardware platform in question. It can be used to estimate the execution time for code running on the platform: the estimation is then done directly from the source code, without compiling and running it. Our experiments show that using this model we can predict the execution times of the final, compiled code surprisingly well. For instance, we achieve an average deviation of 8% for a set of benchmark programs for the ARM7 architecture.

Peter Altenbernd,