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2018.1 Release Notes – OPTIMICA Compiler Toolkit 1.2

OPTIMICA Compiler Toolkit 1.2 is part of Modelon’s 2018.1 release.

New versions of Modelon libraries are sold and distributed directly from Modelon, as well as approved resellers.

Main features

  • A Modelica compiler compliant with the Modelica language specification 3.2.2 and supporting the full Modelica Standard Library version 3.2.2 build 3. The compiler generates Functional Mock-up Units (FMUs), including Model Exchange and Co-simulation as well as version 1.0 and 2.0 of the FMI standard.
  • Dynamic simulation algorithms for integration of large-scale and stiff systems. Algorithms include CVode and Radau among others.
  • Dynamic optimization algorithms based on collocation for solving optimal control and estimation problems. Dynamic optimization problems are encoded in Optimica, an extension to Modelica.
  • A derivative-free model calibration algorithm to estimate model parameters based on measurement data.
  • A non-linear solver for solving large-scale systems of equations arising, e.g., in steady-state applications. Efficient and robust steady-state problem formulation is enable by Hand Guided Tearing, which enables user specified selection of residuals and iteration variables.
  • Support for encrypted and licensed Modelica libraries.
  • Support for state-of-the-art numerical algorithms for dynamic optimization, notably the HSL solver MA57 that provides improved robustness and performance.
  • A compiler API is available to extract information, e.g., packages, models, parameters and annotations, from Modelica libraries.
  • Scripting APIs in Python and MATLAB® are available to script automation of compilation, simulation and optimization of Modelica and FMI models.

The OPTIMICA Compiler Toolkit is available in two versions:

  • OPTIMICA Compiler Toolkit Base version which supports compilation of FMUs and dynamic simulation in Python and MATLAB® (with the addition of FMI Toolbox for MATLAB®) as well as dynamic optimization based on open source solvers.
  • OPTIMICA Compiler Toolkit Full version which in addition supports steady-state computations, including Hand-Guided Tearing in Modelica models and non-linear solver integration in MATLAB®.

In addition, a license option for the linear solver MA57 is available for industrial grade dynamic optimization applications.


  • Full String support
  • Added functionality for obfuscating variable names in FMU
  • Added functionality for hiding internal variables in the FMU
  • Changed default FMI version to FMI 2.0 when compiling FMUs through Python
  • Updated bundled GCC compiler to GCC-TDM-5.1 which enables support for 64bit FMUs using GCC
  • Support for 64bit Python
  • Support for steady-state computations from Python
  • Changed default result format to a binary format when simulating FMUs from Python
  • Support for OPC communication

Compiler Updates

  • Improved Hand-Guided Tearing by allowing initial parameter variability in hold expressions

Compiler API Updates

  • Improved access control for encrypted libraries
  • Improved library license checks
  • Improved handling of primitive types and enumerations
  • Improved SVG rendering
  • Added a representation of modifiers which enables the retrieval of modification points for classes and components

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