Teaching Real-Time Scheduling Analysis with Cheddar

National audienceThis article is a presentation of the Cheddar toolset.Cheddar is a GPL open-source scheduling analysis tool.It has been designed and distributed to allow students to understand the main concepts of the real-time scheduling theory.The tool is built around a simplified ADL (Architecture Description Language)devoted to real-time scheduling theory. Students can directly build their real-time systems models with this ADL andits associated editor, however, it is expected that they use modeling tools to illustrate how scheduling analysis fits in an engineering process.In this article, we introduce the Cheddar ADL and the scheduling analysis features of Cheddar. We alsopresent how Cheddar is implemented and how it can be adapted to specific requirements.Two examples of use of Cheddar are then described.Finally, in the annex of this article, teachers may find a sample of hand-outs that may be used to illustrate real-time scheduling theory with their students

Towards an Innovative Validation-Driven Approach to Lean Product Development

Many software products contain unnecessary functionality. Industrial reports show 45% of the features in analyzed software products are never used. \ Software-centric organizations have been trying to sustain their competitive advantage by re-defining their product development strategy. Recent attempts to re-strategize the product development process tend towards customer-centric approaches. We propose a validation-driven model based around proven lean principles, agile methods, and value-driven design. To increase the model’s likelihood of success, the study discusses suitable guidelines and deployment protocols that have been evolved in industrial settings.

Applicability of Real-Time schedulability analysis on a software radio protocol

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