OpenModelica

The OpenModelica 1.12.0 has been released. You can find the Windows builds here. The Linux and MacOS builds are available via the Download menu above. Release notes in Trac including all the bug fixes.

OpenModelica 1.12.0 release, October 31, 2017

  • A new (stand-alone) FMI- and TLM-based simulation tool OMSimulator, first version for connected FMUs, TLM objects, Simulink models (via wrappers), Adams models (via wrappers), BEAST models (via wrappers), Modelica models
  • Graphic configuration editing of composite models consisting of FMUs
  • Basic graphical editing support for state machines and transitions
  • Faster lookup processing, making some libraries faster to browse and compile
  • Additional advanced visualization features for multibody animation
  • Increased library coverage including significantly increased verification coverage
  • Increased tool interoperability by addition of the ZeroMQ communications protocol
  • Further enhanced OMPython including linearization, now also working with Python 3
  • Support for RedHat/Fedora binary builds of OpenModelica

OpenModelica Compiler (OMC)

  • Faster lookup processing
  • Initializing external objects together with parameters
  • Handle exceptions in numeric solvers
  • Support for higher-index discrete clock partitions
  • Improved unit checking
  • Improved initialization of start values
  • Decreased compilation time of models with large size arrays
  • New approach for homotopy-based initialization (still experimental)
  • A bunch of fixes: Bugs, regressions, performance issues
  • Improved Dynamic Tearing by adding constraints for the casual set
  • Improved module wrapFunctionCalls with one-time evaluation of Constant CSE-variables
  • Added initOptModule for inlineHomotopy
  • Added configuration flag tearingStrictness to influence solvability
  • New methods for inline integration for continuous equations in clocked partitions, now covering: ExplicitEuler, ImplicitEuler, SemiImplicitEuler and ImplicitTrapezoid
  • Complete implementation of synchronous features in C++ runtime
  • Refactored linear solver of C++ runtime
  • Improved Modelica_synchronous_cpp coverage
  • New common linear solver module, optionally sparse, for the C++ runtime
  • Coverage of most of the OpenHydraulics library
  • Improved coverage of ThermoSysPro, IdealizedContact and Chemical libraries
  • Support of time events for cpp-simulation and enabled time events in cpp-FMUs
  • Global homotopy method for initialization
  • Scripting API to compute accumulated errors (1-norm, 2-norm, max. error) of 2 time series

Graphic Editor OMEdit

  • Additional advanced visualization features for multibody animation (transparency, textures, change colours by dialog)
  • An HTML WYSIWYG Editor, e.g. useful for documentation
  • Support for choices(checkBox=true) annotation.
  • Support for loadSelector & saveSelector attribute of Dialog annotation.
  • Panning of icon/diagram view and plot window.
  • AutoComplete feature in text editing for keywords, types, common Modelica constructs
  • Follow connector transformation from Diagram View to Icon View.
  • Further stability improvements
  • Improved performance for rendering some icons using the interactive API
  • Improved handling of parameters that cannot be evaluated in Icon annotations
  • Basic graphic editing support for state machines and transitions (not yet support for showing state internals on diagram layer)
  • Interactive state manipulation for FMU-based animations

FMI Support

  • A new (stand-alone) FMI- and TLM-based simulation tool OMSimulator, first version (a main deliverable of the OPENCPS project, significant contributions and code donations from SKF)
  • Graphic configuration editing of composite models consisting of FMUs
  • Co-simulation/simulation of connected FMUs, TLM objects, Simulink models (via wrappers), Adams models (via wrappers), BEAST models (via wrappers), Modelica models.

Other things

 

  • Increased OpenModelica tool interoperability by adding the ZeroMQ communications protocol in addition to the previously available Corba. This also enables Python 3 usage in OMPython on all platforms.
  • Textual support through the OpenModelica API and graphical support in OMEdit for generation of single or multiple requirement verification scenarios
  • VVDRlib – a small library for connecting requirements and models together, with notions for mediators, scenarios, design alternatives
  • Further enhanced OMPython including linearization, now also working with Python 3.¨
  • Jupyter notebooks also supported with OMPython and Python 3
  • New enhanced library testing script (libraries.openmodelica.org/branches).
  • Addition of mutable reference data types in MetaModelica
  • Support for RedHat/Fedora binary builds of OpenModelica
  • Support for exporting the system of equations in GraphML (yEd) format for debugging

  Support for higher-index discrete clock partitions

·        Improved unit checking

·        Improved initialization of start values

·        New approach for homotopy-based  initialization (still experimental)

·        A bunch of fixes: Bugs, regressions, performance issues

·        Improved Dynamic Tearing by adding constraints for the casual set

·        Improved module wrapFunctionCalls with one-time evaluation of Constant CSE-variables

·        Added initOptModule for inlineHomotopy

·        Added configuration flag tearingStrictness to influence solvability

·        New methods for inline integration for continuous equations in clocked partitions, now covering: ExplicitEuler, ImplicitEuler, SemiImplicitEuler and ImplicitTrapezoid

·        Complete implementation of synchronous features in Cpp runtime

·        Refactored linear solver of Cpp runtime

·        Improved Modelica_synchronous_cpp coverage

·        Coverage of most of the OpenHydraulics library

Support of time events for cpp-simulation and enabled time events in cpp-FMUs
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