HPC : just an application domain for MBSE ?

http://bit.ly/jmb-orap15

Problems with this presentation

• Slides are in English (really a problem?)
• I am not an HPC specialist (sorry)
• I don’t know the audience
• I am the last one of a loooong day (hopefully not the least)

What this is all about?

• Initial, proven, success:
  • HPC and DSLs (cf. previous talks today )
• More to come:
  • DSLs composition (like Forge)
  • Models collaboration / globalization (GEMOC)

What this is all about? (ctd.)

• language viewpoint ⇒ modeling viewpoint
• From DSLs to Model-based Engineeging (MDE)
• HPC seen as a complex system (tools, languages, compilers, architectures, …​)

What this is all about? (ctd.)

Hence the title of this talk:

Is HPC just an application domain for MBSE ?

Content of this presentation

• Why MBSE is useful for HPC?
• Current projects and contributions
• Trends and future directions

First: Thanks

• to the organizers (Isabelle Perseil) (for the invitation)
• to my colleagues
  • CEA CESTA (David Lugato)
  • Benoit Combemale (Diverse, IRISA)
  • many more…​

Answer (soft) from Google …​

What is a model ? (for us)

• A set of diagrams, views, rules …​

What is a model ? (ctd.)

• more precisely, a set of artefacts

What is a model ? (ctd.)

• Scientific models vs. Engineering models
• Differential equations vs. Class Diagram
• Tooling scripting vs. MDE

Scientific models

Bottom-Up approach

Engineering models

Top-Down approach

What is MDE ?

Meant to increase productivity by maximizing compatibility between systems via reuse of models.

Wikipedia

Scripting vs. MDE

Scientific models:

• pipe
• scripting "unix-like"

Scripting vs. MDE (ctd.)

Engieering models:

• openData
• metamodels
• transformation

Domain-Specific Languages

Engineering

Jezequel et al., 2014

Model-Based System Engineering

Example of DS(M)L: HPC for CEA

Nuclear defense simulation

DSML : Domain Specific Modeling Language

HPC : High Performance Calculus

CEA : Commissariat a l'Energie Atomique et aux Energies Alternatives

HPC for CEA (solution)

DSML as a profile

DSML from scatch

Technics and tools

• Papyrus
• EMF
• Sirius
• Xtext
• GEMOC

Lessons learned

• Gap is getting smaller
• Both modeling "worlds" are mature
• Communities are ready for collaborations

Challenges

• Build relevant model transformations
  • static and dynamic analysis
  • import / export with existing tools
• Domain-specific animation
• Domain-specific property languages
• Avoid the "cut & paste" limitations
• Enforce creativity & Innovation
• Required added value (e.g. Architectural design)

Sustainability

• Power of what-ifs
• Modeling for Sustainability

Thanks for your attention!

Slides

http://jmb.c.la

Contact

bruel@irit.fr

Photos

https://www.flickr.com

About…​

Document generated by JMB with Asciidoctor (version 1.5.3) from 'Dan Alen'.

MBSE techniques

• DSLs
• Model transformation
• Documentation generation
• Model execution
• Code Generation
• Traceability links
• Coupling Modeling/Simulation