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October 6, 2009—A new release of the Open Source AADL Tool Environment (OSATE) supports analysis of architectural models created with Version 2 of the SAE Architecture Analysis and Design Language (AADL) standard.
The AADL defines a language for describing both the software and the hardware architectures of performance-critical, embedded, real-time systems. The OSATE is a tool development platform which the SEI has augmented to allow system designers to perform consistency checks on AADL architectural models for latency, safety, and security and other aspects. The SEI makes the OSATE available at no cost under an open source arrangement.
Now available, OSATE 2.0 is an alpha release that permits the analysis of the resource management of processors, memory, and network bandwidth. Using this analysis, system designers can decide how to allocate application components to the execution platform and can determine how their decisions affect resource budgets.
SAE International, which published the initial AADL in 2004, made Version 2 of the standard available in January 2009. Incorporating improvements based on the use of AADL in industrial projects, AADL Version 2 introduces virtual processor and virtual bus component categories in support of partitions, hierarchical schedulers, virtual channels, and protocol stacks. Other enhancements include abstract components, classifier parameterization, and component multiplicity in order to better support architecture patterns for system families and reference architectures as well as scaling to large-scale systems.
For more information on the OSATE and the AADL, go to http://www.sei.cmu.edu/dependability/tools/.