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behavioral intervals in embedded software: timing and power analysis of embedded real-time software processes (en Inglés)
Fabian Wolf
(Autor)
·
Springer
· Tapa Blanda
behavioral intervals in embedded software: timing and power analysis of embedded real-time software processes (en Inglés) - Wolf, Fabian
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Reseña del libro "behavioral intervals in embedded software: timing and power analysis of embedded real-time software processes (en Inglés)"
Behavioral Intervals in Embedded Software introduces a comprehensive approach to timing, power, and communication analysis of embedded software processes. Embedded software timing, power and communication are typically not unique but occur in intervals which result from data dependent behavior, environment timing and target system properties.In system design, these intervals are used in many ways. In some cases, only the worst case is of interest, e.g. for single processor schedulability analysis, in another context both best and worst cases are relevant, such as for multiprocessor scheduling. In all these cases, these behavioral intervals of the individual software processes are fundamental data needed to analyze system behavior. With growing importance of embedded software, formal analysis of behavioral intervals has met increasing interest. Major contributions were the introduction of implicit path enumeration and the inclusion of cache analysis. While all approaches are conservative, i.e. all possible timing behavior (or communication, power consumption) is included in the resulting intervals, the main differences are in the architecture features that are covered by the hardware model and the width of the conservative interval. The closer this interval to the real timing bounds, the higher is the practical use of formal analysis.The current analysis techniques leverage on previous work in compiler technology by using basic blocks as elementary units for architecture modeling and path analysis. The work presented here opens a new direction moving from basic block based analysis to an analysis based on larger program segments with a single execution path. Such program segments frequently extend over many basic blocks, in particular in embedded system applications.The approach combines the generality and accuracy of formal analysis with the modeling precision of cycle true simulation without compromising formal completeness. The results show that with this combination of tracing and formal analysis both higher precision than previous approaches leading to tighter and more realistic intervals can be obtained and easier adaptation due to the use of standard off-the-shelf cache simulators, cycle-true processor models or evaluation boards is possible.Behavioral Intervals in Embedded Software will be a useful reference for academics as well as research scientists who are active in the field of Design Automation and Embedded Systems.
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