= OpenModelica 1.8.0, November 2011 =

The OpenModelica 1.8.0 release contains OMC flattening improvements for the Media library - it now flattens the whole library and simulates about 20% of its example models. Moreover, about half of the Fluid library models also flatten. This release also includes two new tool functionalities - the FMI for model exchange import and export, and a new efficient Eclipse-based debugger for Modelica/MetaModelica algorithmic code.

== OpenModelica Compiler (OMC) ==

This release includes bug fixes and improvements of the flattening frontend part of the OpenModelica Compiler (OMC) and several improvements of the backend, including, but not restricted to: A faster and more stable OMC model compiler. The 1.8.0 version flattens and simulates more models than the previous 1.7.0 version.

- Flattening of the whole Media library, and about half of the Fluid library. Simulation of approximately 20% of the Media library example models.
- Functional Mockup Interface FMI 1.0 for model exchange, export and import, for the Windows platform.
- Bug fixes in the OpenModelica graphical model connection editor OMEdit, supporting easy-to-use graphical drag-and-drop modeling and MSL 3.1.
- Bug fixes in the OMOptim optimization subsystem.
- Beta version of compiler support for a new Eclipse-based very efficient algorithmic code debugger for functions in MetaModelica/Modelica, available in the development environment when using the bootstrapped OpenModelica compiler.
- Improvements in initialization of simulations.
- Improved index reduction with dynamic state selection, which improves simulation.
- Better error messages from several parts of the compiler, including a new API call for giving better error messages.
- Automatic partitioning of equation systems and multi-core parallel simulation of independent parts based on the shared-memory OpenMP model. This version is a preliminary experimental version without load balancing.

== OpenModelica Notebook (OMNotebook) ==

No changes.

== OpenModelica Shell (OMShell) ==

Small performance improvements.

== OpenModelica Eclipse Plug-in (MDT) ==

Small fixes and improvements. MDT now also includes a beta version of a new Eclipse-based very efficient algorithmic code debugger for functions in MetaModelica/Modelica.

== OpenModelica Development Environment (OMDev) ==

Third party binaries, including Qt libraries and executable Qt clients, are now part of the OMDev package. Also, now uses GCC 4.4.0 instead of the earlier GCC 3.4.5.

== Graphic Editor OMEdit ==

Bug fixes. Access to FMI Import/Export through a pull-down menu. Improved configuration of library loading. A function to go to a specific line number. A button to cancel an on-going simulation. Support for some updated OMC API calls.

== New OMOptim Optimization Subsystem ==

Bug fixes, especially in the Linux version.

== FMI Support ==

The Functional Mockup Interface FMI 1.0 for model exchange import and export is supported by this release. The functionality is accessible via API calls as well as via pull-down menu commands in OMEdit.