← 1.11.0 | 1.13.0 →

Release Notes for OpenModelica 1.12.0

• 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

Component: *unknown* (6 matches)

Ticket	Summary	Resolution	Owner	Type	Priority	Version
#2821	Library Save Bug	fixed	somebody	defect	high	trunk
#2910	Saving model problems	fixed	somebody	defect	high	trunk
#3614	Much larger memory consumption of OMC under Linux than under Windows	fixed	sjolund.se	defect	critical
#4092	using ZeroMQ messaging instead of CORBA/omniORB?	fixed	somebody	discussion	normal
#4521	OM does not allow omitting a function output	fixed	somebody	defect	normal
#4570	State-machines translation error	fixed	bthiele	defect	critical	v1.13.0-dev-nightly
Component: Backend (26 matches)
Ticket	Summary	Resolution	Owner	Type	Priority	Version
#1831	SimCodeUtil.calculateIndex failed	fixed	jfrenkel	defect	high
#1893	function createSimCode failed	fixed	somebody	defect	high
#2226	Improve event logging	fixed	lochel	enhancement	high	trunk
#3446	Impure file name passing breaking CombiTimeTable	fixed	lochel	defect	normal	trunk
#3691	indexReduction doesn't reduce system with algebraic loop state constrains	fixed	wbraun	defect	blocker	v1.9.4-dev-nightly
#3703	Linearization of CombiTable2D fails	fixed	wbraun	defect	high	v1.9.4-dev-nightly
#3799	SimCode generation fails for 3ph trafo models	fixed	lochel	defect	critical
#3816	Matching and sorting scales as O(N^3) in models with large numbers of discrete variables	fixed	ptaeuber	defect	critical
#4005	EncapsulateWhenConditions scales as O(N^3) in models where a when clause is triggered by a large vector of conditions	fixed	sjoelund.se	defect	high
#4040	missing C-code in derivative calculation of Tables	fixed	wbraun	defect	high
#4224	Activated wrapFunctionCalls lets events fail with Cpp runtime	fixed	lochel	defect	critical	v1.12.0
#4228	Backend fails on complex when clause	fixed	lochel	defect	high
#4274	Warn about models without enough initial equations by default	fixed	lochel	defect	critical
#4279	Annex60 stopped working in dev version	fixed	wbraun	defect	high	v1.12.0
#4304	assert in initial section	fixed	lochel	discussion	low
#4387	Functions with no return value are not called in when ( initial() ) clauses	fixed	lochel	defect	high	v1.12.0
#4392	Stack overflow in calculateStrongComponentJacobians	fixed	adrpo	defect	high
#4394	PNLib problems with when(initial) and counter function	fixed	lochel	defect	high
#4399	OMEdit 1.12 simulate with animation fails on a model that works with 1.11	fixed	lochel	defect	high	v1.12.0
#4450	Most PhotoVoltaics examples are not working any more	fixed	ptaeuber	defect	critical	v1.12.0
#4453	Compilation Time of a model with large size arrays	fixed	sjoelund.se	defect	high
#4454	Differentiate.differentiateExp speed is poor	fixed	lochel	defect	high	v1.12.0
#4456	PreOptModule evalFunc leads to overdetermined system	fixed	vwaurich	defect	normal
#4460	ResolveLoops scales as O(N^3) in large linear circuit models	fixed	vwaurich	defect	high
#4530	Wrong implementation of sub/superSample in conjunction with shiftSample	fixed	rfranke	defect	high
#4561	Implement incomplete matching for under/overdetermined systems	fixed	sjoelund.se	enhancement	high
Component: Build Environment (4 matches)
Ticket	Summary	Resolution	Owner	Type	Priority	Version
#4114	make omedit puts files in wrong place on OSX	fixed	sjoelund.se	defect	blocker	v1.11.0
#4326	Syntax error from configure script when trying to compile OpenModelica	fixed	sjoelund.se	defect	high
#4459	MSVC broken using latest 32bit Windows build	fixed	adrpo	defect	critical	v1.12.0
#4491	OM does not compile Modelica trunk experiments with tables	fixed	adrpo	defect	high
Component: Code Generation (4 matches)
Ticket	Summary	Resolution	Owner	Type	Priority	Version
#4212	Wrong code generation for function calls involving cross product and MultiBody.Frames.Rotation records	fixed	sjoelund.se	defect	high
#4339	Erroneous descriptive strings for derivatives	fixed	lochel	defect	low
#4407	Cleanup of workspace / case sensitivity	fixed	lochel	defect	normal
#4419	Bug in simplification of rem() or div()	fixed	lochel	defect	blocker	v1.12.0
Component: FMI (4 matches)
Ticket	Summary	Resolution	Owner	Type	Priority	Version
#4192	Cannot set discrete inputs for Co-Simulation FMU	fixed	lochel	defect	high	v1.12.0
#4479	FMU source build fails due to missing lambda functions	fixed	lochel	defect	high
#4529	[c runtime] FMI setReal/getReal doesn't work	fixed	lochel	defect	critical
#4562	Fix default nominal attribute in FMUs	fixed	sjoelund.se	defect	high
Component: Frontend (10 matches)
Ticket	Summary	Resolution	Owner	Type	Priority	Version
#2619	OpenModelica in git instead of svn	fixed	sjoelund.se	task	high	trunk
#4185	Change default of -d=gen to false	fixed	sjoelund.se	defect	high
#4189	OMC compiles models with no parameter-binding equations without giving warning/errors	fixed	somebody	defect	critical
#4190	When equations with array components as condition now fail	fixed	sjoelund.se	defect	high
#4207	Frontend evaluation of parameters	fixed	sjoelund.se	defect	high
#4258	compilation error when using multiple media	fixed	adrpo	defect	high	v1.12.0
#4276	Allow assignment to fixed=false parameters	fixed	lochel	defect	high
#4306	Unit propagation issue	fixed	lochel	defect	normal
#4365	Count number of equations correctly when using inner/outer variables in algorithm	fixed	adrpo	defect	high
#4527	Clocked state machine run-time assert dimension error	fixed	bthiele	defect	high
Component: Initialization (1 match)
Ticket	Summary	Resolution	Owner	Type	Priority	Version
#4359	start-value are not initialized correctly	fixed	lochel	defect	blocker
Component: Installation program (5 matches)
Ticket	Summary	Resolution	Owner	Type	Priority	Version
#3618	Compiling From Source Fedora 23	fixed	somebody	defect	high
#4018	Minimize the size of the Windows installer	fixed	adrpo	defect	high
#4508	The windows nightly installer/uninstaller is too slow	fixed	adeas31	defect	high
#4516	Fix Linux RPM packages for version 1.12 and update webpage information	fixed	sjoelund.se	defect	blocker
#4647	Installation issue with Mac OS 10.13	fixed		defect	high
Component: Instantiation (1 match)
Ticket	Summary	Resolution	Owner	Type	Priority	Version
#1452	Better simplification needed	fixed	perost	defect	high	trunk
Component: Interactive Environment (4 matches)
Ticket	Summary	Resolution	Owner	Type	Priority	Version
#2052	reassign parameter-value	fixed	somebody	discussion	high	trunk
#3680	getConnectionCount does not return connection with for loop	fixed	adeas31	defect	high	v1.9.4-dev-nightly
#4233	Consecutive end <class> statements on the same lines wreak havoc in OMEdit	fixed	sjoelund.se	defect	critical
#4259	Omedit does not show a probably right annotation	fixed	sjoelund.se	defect	normal
Component: MetaModelica (3 matches)
Ticket	Summary	Resolution	Owner	Type	Priority	Version
#3867	Add alternative to array<T> for mutable variables	fixed	sjoelund.se	enhancement	high
#4382	Array operators .- .+ fail	fixed	lochel	defect	normal
#4474	inefficient list() comprehension	fixed	sjoelund.se	defect	high
Component: New Instantiation (1 match)
Ticket	Summary	Resolution	Owner	Type	Priority	Version
#1889	Handle String and Integer operators in new instantiation	fixed	perost	defect	high	trunk
Component: OMEdit (83 matches)
Ticket	Summary	Resolution	Owner	Type	Priority	Version
#1857	Simplify adding new models	fixed	adeas31	enhancement	low	trunk
#2232	OMEdit: is it possible to set the axis regions manually?	fixed	adeas31	defect	high	trunk
#2249	Support new annotation DocumentationClass	fixed	adeas31	defect	high	trunk
#3414	Make OMEdit usable on Tablets / high resolution screens	fixed	adeas31	defect	high	trunk
#3906	Visualization of equation transformations in OMEdit broken	fixed	adeas31	defect	high
#4038	Dassl modifiers no longer in sync	fixed	adeas31	defect	blocker
#4067	Add a Documentation Editor to OMEdit.	fixed	adeas31	enhancement	high
#4151	OMEdit options fields extend outside the window frame	fixed	adeas31	defect	high	v1.11.0
#4186	Duplicate of Modelica class with illegal class name	fixed	adeas31	defect	high
#4188	OMedit issue with array connections	fixed	adeas31	defect	high
#4196	OMEdit does not honour line thickness in connecting lines	fixed	adeas31	defect	normal
#4197	Show backtraces from all threads	fixed	adeas31	enhancement	high
#4199	Long delay before feedback in OMEdit	fixed	adeas31	enhancement	normal
#4204	Parameter string not displayed correctly in diagram view	fixed	adeas31	defect	high
#4208	OMEdit: animation pane not shown	fixed	adeas31	defect	high
#4214	Add texture to spheres and cylinders in 3D visualization	fixed	vwaurich	enhancement	normal
#4218	Omedit changes modifiers in string when the parameters pop-up window is used	fixed	adeas31	defect	blocker	v1.12.0
#4252	OMEdit Forces Discrete GPU on Mac	fixed	adeas31	defect	high
#4256	Text size on input connectors and other MSL components	fixed	adeas31	enhancement	high
#4257	Simulation with ida solver doesn't start in OMEdit	fixed	adeas31	defect	high	v1.11.0
#4263	Hide toolbars when in the wrong perspective	fixed	adeas31	enhancement	normal
#4264	Multi-line text	fixed	adeas31	enhancement	low
#4267	OMEdit crash reports seem to freeze	fixed	adeas31	defect	normal
#4275	Git feature issue	fixed	alash325	defect	critical	v1.12.0
#4281	Parametric Plot Does Not Work	fixed	adeas31	defect	critical	v1.12.0
#4282	Re-simulate disappeared from OMEdit Modeling pane	fixed	adeas31	defect	high	v1.12.0
#4283	names of new models	fixed	adeas31	enhancement	low
#4287	Add support for checkbox annotation	fixed	adeas31	enhancement	high	v1.12.0
#4295	new "checkbox" annotation is ignored if combined with any other choices annotation	fixed	adeas31	defect	high
#4296	Connections are not displayed correctly	fixed	adeas31	defect	high
#4303	Support the Dialog(loadSelector|saveSelector) annotations	fixed	adeas31	enhancement	critical
#4305	OMEdit: Message "Revert to last correct version" - default behavior	fixed	adeas31	enhancement	normal
#4308	OMEdit: Snap to grid coarse modifier (shift key) and pan view (control key)	fixed	adeas31	enhancement	normal
#4310	OMEdit: Code folding option unavailable if line ends with whitspace	fixed	adeas31	defect	high
#4311	OMEdit segfault after start	fixed	adeas31	defect	low
#4314	Feature request: close windows by ESC key	fixed	adeas31	enhancement	high
#4319	OMEdit: Incomplete display of Icons with connector annotations	fixed	adeas31	defect	normal
#4320	OMEdit: Follow connector transformation from Diagram View to Icon View	fixed	adeas31	enhancement	normal
#4325	OMEdit: Check model window is too small	fixed	adeas31	defect	high
#4327	OMEdit: Option to automatically clear all messages in Messages Browser	fixed	adeas31	enhancement	normal
#4331	OMEdit: polygon annotation: discontinuous angle when Bezier enabled	fixed	adeas31	defect	normal
#4332	OMEdit: polygon annotation: odd coordinates if more then two points are drawn	fixed	adeas31	defect	normal
#4334	OMEdit: "save experiment annotation inside model" file changed and undo	fixed	adeas31	defect	low
#4338	new checkBox annotation causes display error in diagram	fixed	adeas31	defect	high	v1.12.0
#4340	OMEdit: extend vertical space in Diagram View to e.g. investigate connectors thoroughly	fixed	adeas31	enhancement	normal
#4341	OMEdit: display outline of models for system libraries in Diagram View	fixed	adeas31	enhancement	normal
#4342	OMEdit: bug: positions of elements in protected section are not saved properly	fixed	adrpo	defect	normal
#4343	OMEdit: open a model with [enter] key in Libraries Browser	fixed	adeas31	enhancement	normal
#4348	OMEdit: preserve User's GUI customization - some elements are missing	fixed	adeas31	defect	normal
#4349	OMEdit: very coarse zoom steps in Documentation Browser	fixed	adeas31	enhancement	low
#4357	OMEdit allows class names with spaces	fixed	adeas31	defect	high	v1.12.0
#4361	Util/StringHandler.cpp:1125:40: error: ambiguous overload for ‘operator!=’	fixed	adeas31	defect	normal	v1.12.0
#4376	OMEdit: Undo stack is cleared when the model is saved in TextView	fixed	adeas31	defect	high
#4377	Long simulation time causes OMEdit to freeze	fixed	adeas31	defect	high	v1.12.0
#4379	OMEdit: Select multiple objects in DiagramView with [Shift] key (not with [Control] key)	fixed	adeas31	enhancement	normal
#4381	OMEdit: A for loop in equations leads to vanishing of connection annotations (wires)	fixed	adeas31	defect	normal
#4400	OMPlot: Double click on plot legend entry toggles hiding trace	fixed	adeas31	enhancement	high	v1.12.0
#4401	OMEdit: Open component class in Diagram View with [Shift] + [Enter]	fixed	adeas31	enhancement	normal	v1.12.0
#4402	OMEdit: Correctly switch between Simulate with and w/o Animation	fixed	adeas31	enhancement	normal	v1.12.0
#4404	OMEdit: Auto-Complete - Some key features are missing	fixed	adeas31	enhancement	high	v1.12.0
#4409	Object moving in block diagram unfolds all annotations in text view	fixed	adeas31	defect	high	v1.12.0
#4421	Units of measure field loads a "save as.." dialog	fixed	adeas31	defect	high
#4431	OMEdit includes too large white spaces when exporting to clibpoard.	fixed	adeas31	defect	low
#4433	Improve the layout of the declarative debugger	fixed	adeas31	enhancement	high
#4434	infoXMLOperations not found by declarative debugging	fixed	adeas31	defect	critical
#4436	Improve how equations are shown in the declarative debugger when tearing is applied	fixed	adeas31	enhancement	high
#4440	OMEdit does not simulate	fixed	adeas31	defect	high
#4444	Equations inside the Equations Operation window of the declarative debugger are difficult to interpret	fixed	adeas31	enhancement	high
#4461	OMEdit does not save additional simulation flags	fixed	adeas31	defect	critical	v1.12.0
#4463	Feature request: show library version number, build, date and library dependencies in tool tip	fixed	adeas31	enhancement	high
#4468	OMEdit cuts names when copying to clipboard	fixed	adeas31	defect	normal
#4472	OMEdit corrupts files	fixed	adeas31	defect	blocker
#4476	FillPattern.HorizontalCylinder SVG export is not working properly	fixed	adeas31	defect	high
#4478	Show time units in Simulation Setup	fixed	adeas31	defect	high
#4486	Report end of initialization and start of simulation in the log	fixed	adeas31	defect	critical
#4490	Display issues with Modelica Trunk	fixed	adeas31	defect	high
#4492	Documentation view is not working in OMEdit	fixed	adeas31	defect	high
#4505	Icon text of plugs shall not be visible in Diagram View	fixed	adeas31	defect	high
#4514	OMEdit crashes when loading model with state machine	fixed	adeas31	defect	high
#4547	Duplicate models should belong to the original model's package by default	fixed	adeas31	enhancement	high
#4567	Simulation Toolbar appears twice	fixed	adeas31	defect	high
#4572	OMEdit allows illegal instance names through GUI	fixed	adeas31	defect	blocker
#4576	OMEdit crashes when try to create a transition between two states of a status machine	fixed	adeas31	defect	high	v1.13.0-dev-nightly
Component: OMNotebook (1 match)
Ticket	Summary	Resolution	Owner	Type	Priority	Version
#4193	Show line numbers in Inputcells for OMNotebook	fixed	hkiel	enhancement	normal
Component: OMOptim (1 match)
Ticket	Summary	Resolution	Owner	Type	Priority	Version
#4487	OMOptim does not communicate with OMC	fixed	adrpo	defect	high	v1.11.0
Component: OMPython (2 matches)
Ticket	Summary	Resolution	Owner	Type	Priority	Version
#3705	Implement jupyter-openmodelica in addition to OMNotebook	fixed	adeas31	enhancement	normal
#4029	OMPython setup.py assumes omniidl is installed	fixed	alash325	enhancement	low	v1.11.0
Component: Parser (1 match)
Ticket	Summary	Resolution	Owner	Type	Priority	Version
#4153	Diff algorithm failure	fixed	sjoelund.se	defect	critical
Component: Run-time (6 matches)
Ticket	Summary	Resolution	Owner	Type	Priority	Version
#1468	Discontinuity in results not properly stored (?)	fixed	asodja	discussion	normal
#2546	No state simulation after 1e+08 seconds	fixed	somebody	defect	high	trunk
#2763	Propagation of start values for inputs to simulation	fixed	lochel	enhancement	normal	trunk
#4220	Improve logging of homotopy-based initialization (-ils)	fixed	lochel	enhancement	high
#4488	Simulation crash with optimization solver	fixed	sjoelund.se	defect	blocker	v1.12.0
#4520	Lookup: how to start from top level	fixed	somebody	defect	normal
Component: Susan (Templates) (1 match)
Ticket	Summary	Resolution	Owner	Type	Priority	Version
#3949	Susan parses the same interface files several times included from different files	fixed	sjoelund.se	defect	high
Component: Third-Party Libraries (1 match)
Ticket	Summary	Resolution	Owner	Type	Priority	Version
#4439	Include Libraries in OpenModelica	fixed	sjoelund.se	enhancement	high