[ Capella Day 2019 ] Providing early timing analysis of the system design

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When designing real-time systems, one issue is to grant that the system will always behave properly within the expected time constraints. By capturing the design choices in Capella (periodic/sporadic events, precedence relation between tasks, network communication between resources, mutual exclusion resources, etc.), Tideal viewpoint not only allows to compute the worst-case execution time for end-to-end flows traversing the system but also provides some feedback to the architect to better understand the temporal behavior of the system. Benoit Viaud, Artal Benoit Viaud leads Artal’s System Engineering unit. He initiated the creation of Citrus, a one-stop-shop engineering framework for simulation and is deeply involved in its deployment in Airbus. He also carries out coaching and consulting activities around Capella.

Technologie

Artal
Temporal Analysis
Does my system design match the
temporal requirements under all
possible circumstances?
What is the worst case
response time?
Is my system schedulable?
• CPU/network load within boundaries
• no deadlock
Software intensive systems

Artal
Temporal Analysis - How
Capture the "problem"
Resources
• hardware
• software
Temporal behaviours
• Sequences
• WCET
Simulation
Soft timing requirements
Formal analysis
Hard timing requirements

Artal
Temporal Analysis - Who
Capture the "problem"
Formal analysis Simulation
Architect
Coarse-grain analysis
Expert
design
results
• Semantic gaps btw the architect view
and the expert view
• Late in the process
• Potentialy one tool / expert per problem
• Too pessimistic
• Too optimistic: false worst case

Artal
https://www.polarsys.org/time4sys/

Artal
Goals
Propose a unified definition for the temporal characteristics of a real-time system
together with a graphical representation
Bridge the gap between the analysis & simulation tools and the design capture
Tool#1
Tool#2
Expert#1
Expert#2
??
Architect
Tool#1
Tool#2
Expert

Artal
A tools repository
Content
SCREENSHOT
Model as
captured
Transformation
Model
suitable with
Tool#1
X not compliant
with Tool#2

Artal
Visualization of results
Content
SCREENSHOT

Artal
Tideal
The Time4Sys viewpoint for Capella
Tool#1
Tool#2
Timing
VPArchitect
Expert
Fix or
optimization

Artal
The airbag use case
A simple critical system where time matters …

Artal
Further support for specific real-time framework: ARINC 653
• Enrich the viewpoint with A653 concepts: partitions, tasks, communication
mechanisms, …
• Editing accelerators
• Specific transformation to Time4Sys (from Activity Explorer)
• Dedicated analysis/simulation tool
Going further with A653

Artal
Capella / SysML bridge
From Cameo SysML
to Capella
with iterative support
and back again

Artal
Nicer diagrams
Microsoft Visio™
Nice views / better communication
Weak semantics
Difficult to reuse
Capella™
Rich semantics
Digital continuity enabler
Not so good for communication
?

More information on
http://capella.artal-group.com

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Connecting Textual Requirements with Capella Models

Obeo

Beyond the no code approach, Sirius Web is an open and extensible platform that you can customize in order to support your needs. Discover how to develop specific features in Sirius Web and integrate your modeler with other web applications. Stéphane Bégaudeau, Obeo Stéphane Bégaudeau graduated from the Nantes University of Sciences and Technology and is currently working as an Eclipse Modeling consultant at Obeo in France.

Sirius Web Advanced : Customize and Extend the Platform

Obeo

Learn step-by-step how to create a domain model and define your first diagrams with Sirius Web, without any line of code. It will allow you to easily create custom graphical representations that automatically represent your data in the web. Frédéric Madiot, Obeo Frédéric Madiot is Marketing Manager at Obeo. He has more than 25 years of experience in developing model-driven tools to industrialize the development of new applications and the modernization of existing systems.

Sirius Web 101 : Create a Modeler With No Code

Obeo

What's new in Sirius Web ? Discover the current version and what will come in the next releases. Mélanie Bats, Obeo Mélanie Bats works as CTO at Obeo. In my daily work, I am mainly focused on managing the R&D team, creating products based on our own open source technologies. I am used to work in the development of modeling tools with Sirius like UML Designer. I am committer for the EEF and the Sirius projects. I am also involved in the Eclipse community as being the Eclipse Planning Council chair. I am also a free software activist who has organized and participated in free software events in the Toulouse area.

Sirius Project, Now and In the Future

Obeo

Visualizing, Analyzing and Optimizing Automotive Architecture Models using Sirius Advancing digitalization affects almost all aspects of our modern world. A prominent example is that of modern automobiles. From primarily mechanical machines, cars have evolved into driving complex cyber-physical systems over the last decades. Optimizing such systems consisting of vast networks of sensors, actuators, control units, and communication systems is a huge challenge for today's automotive industry and requires standardized and integrated toolchains fit for purpose. Together with a prestigious automotive industry partner, the Technical University of Ilmenau developed an application together with an integrated toolchain for evaluating and optimizing automotive architecture models. This application is based on the Obeo Sirius project as well as the Eclipse Modeling Framework. Based on Sirius, we created a model editor which is used for visualizing, editing, but also analyzing and optimizing automotive models across the boundaries of different architectural layers. Maximilian Hammer, Technical University of Ilmenau Maximilian Hammer is a Research Assistant at Technical University of Ilmenau

Visualizing, Analyzing and Optimizing Automotive Architecture Models using Si...

Obeo

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