OpenModelica master-fmi from 2026-04-13 22:05:15 to 2026-04-14 19:26:00

Summary

OMC Commits	7
Libraries Changed	12
Number of Improvements	13
Number of Regressions	4
Number of Performance Improvements	6
Number of Performance Regressions	4

OpenModelica Changes

Commit	Date	Author	Summary
5e3e8824cf	2026-04-14 17:42:14 +0200	Per Östlund	Document dumpFlatModel for translateResidualsDAE (#15328)
a3db347217	2026-04-14 16:53:27 +0200	Adeel Asghar	Allow messages dock window to take more space (#15326)
1face1afee	2026-04-14 16:32:11 +0200	Martin Sjölund	Add a Model Context Protocol (MCP) server to OMEdit
a5d5985248	2026-04-14 15:05:24 +0200	Per Östlund	Add __OpenModelica_Impure where needed (#15323)
74b6b7e247	2026-04-14 14:39:40 +0200	Per Östlund	Handle Code variables in InstDAE.daeDeclare (#15322)
aa4bdaf579	2026-04-14 13:53:50 +0200	Per Östlund	Improve documentation of add/delete/updateEquation (#15320)
1d3a2f9170	2026-04-14 11:13:28 +0200	Per Östlund	Remove empty array variables in Base Modelica (#15317)

3rdParty changes

Note that the 3rdParty libraries changed: 20924d599879..a5205221927e

OpenModelicaLibraryTesting Changes

Commit	Date	Author	Summary
e83c3f4	2026-04-14 08:15:53 +0200	Adrian Pop	cannot run python -m fmpy via check_output_log (#284)
2915413	2026-04-09 17:46:10 +0200	Adrian Pop	update the way we get the version for FMPy (#283)

Library Changes

Library	Change
AixLib	From version 2.1.1 (https://github.com/RWTH-EBC/AixLib/archive/b9d4d88d1fb38511d2af0958f11855c14064841a.zip) OMSimulator v3.0.0.post137-g8ed186e-linux-debug to 2.1.1 (https://github.com/RWTH-EBC/AixLib/archive/b9d4d88d1fb38511d2af0958f11855c14064841a.zip) warning: Failed to load settings: [json.exception.parse_error.101] parse error at line 3, column 2: syntax error while parsing value - invalid literal; last read: '"temp_AixLib_AixLib_Fluid_HeatPumps_Validation_ReciprocatingWaterToWater_Static_fmu"}_'; expected end of input OMSimulator v3.0.0.post137-g8ed186e-linux-debug info: 1 warnings info: 0 errors
BuildingSystems	From version 2.0.0-master (37f23a121434b999f66f0bf7ee16bb67ad8b2b83) OMSimulator v3.0.0.post137-g8ed186e-linux-debug to 2.0.0-master (37f23a121434b999f66f0bf7ee16bb67ad8b2b83) warning: Failed to load settings: [json.exception.parse_error.101] parse error at line 3, column 2: syntax error while parsing value - invalid literal; last read: '"temp_AixLib_AixLib_Fluid_HeatPumps_Validation_ReciprocatingWaterToWater_Static_fmu"}_'; expected end of input OMSimulator v3.0.0.post137-g8ed186e-linux-debug info: 1 warnings info: 0 errors
Buildings_11	From version 11.1.1-maint.11.x (https://github.com/lbl-srg/modelica-buildings/archive/64c9cfb943a9c6075d3f396dcdea665fd24f487f.zip) OMSimulator v3.0.0.post137-g8ed186e-linux-debug to 11.1.1-maint.11.x (https://github.com/lbl-srg/modelica-buildings/archive/64c9cfb943a9c6075d3f396dcdea665fd24f487f.zip) warning: Failed to load settings: [json.exception.parse_error.101] parse error at line 3, column 2: syntax error while parsing value - invalid literal; last read: '"temp_AixLib_AixLib_Fluid_HeatPumps_Validation_ReciprocatingWaterToWater_Static_fmu"}_'; expected end of input OMSimulator v3.0.0.post137-g8ed186e-linux-debug info: 1 warnings info: 0 errors
Buildings_12	From version 12.1.1-maint.12.x (https://github.com/lbl-srg/modelica-buildings/archive/e99e042c0dd0d7cfd19425fe260eb1501486b194.zip) OMSimulator v3.0.0.post137-g8ed186e-linux-debug to 12.1.1-maint.12.x (https://github.com/lbl-srg/modelica-buildings/archive/e99e042c0dd0d7cfd19425fe260eb1501486b194.zip) warning: Failed to load settings: [json.exception.parse_error.101] parse error at line 3, column 2: syntax error while parsing value - invalid literal; last read: '"temp_AixLib_AixLib_Fluid_HeatPumps_Validation_ReciprocatingWaterToWater_Static_fmu"}_'; expected end of input OMSimulator v3.0.0.post137-g8ed186e-linux-debug info: 1 warnings info: 0 errors
Buildings_latest	From version 13.0.0-master (https://github.com/lbl-srg/modelica-buildings/archive/ea4a998fd28f14d73269049a599d17f5657c9c67.zip) OMSimulator v3.0.0.post137-g8ed186e-linux-debug to 13.0.0-master (https://github.com/lbl-srg/modelica-buildings/archive/ea4a998fd28f14d73269049a599d17f5657c9c67.zip) warning: Failed to load settings: [json.exception.parse_error.101] parse error at line 3, column 2: syntax error while parsing value - invalid literal; last read: '"temp_AixLib_AixLib_Fluid_HeatPumps_Validation_ReciprocatingWaterToWater_Static_fmu"}_'; expected end of input OMSimulator v3.0.0.post137-g8ed186e-linux-debug info: 1 warnings info: 0 errors
IBPSA_latest	From version 4.0.0-master (958fca8f8bd50169efdde81b6188ad7b7060eb6f) OMSimulator v3.0.0.post137-g8ed186e-linux-debug to 4.0.0-master (958fca8f8bd50169efdde81b6188ad7b7060eb6f) warning: Failed to load settings: [json.exception.parse_error.101] parse error at line 3, column 2: syntax error while parsing value - invalid literal; last read: '"temp_AixLib_AixLib_Fluid_HeatPumps_Validation_ReciprocatingWaterToWater_Static_fmu"}_'; expected end of input OMSimulator v3.0.0.post137-g8ed186e-linux-debug info: 1 warnings info: 0 errors
IDEAS	From version 4.0.0 (https://github.com/open-ideas/IDEAS/archive/24eea8ff8c67d1b32d53429eaaec9c6a3fbaac84.zip) OMSimulator v3.0.0.post137-g8ed186e-linux-debug to 4.0.0 (https://github.com/open-ideas/IDEAS/archive/24eea8ff8c67d1b32d53429eaaec9c6a3fbaac84.zip) warning: Failed to load settings: [json.exception.parse_error.101] parse error at line 3, column 2: syntax error while parsing value - invalid literal; last read: '"temp_AixLib_AixLib_Fluid_HeatPumps_Validation_ReciprocatingWaterToWater_Static_fmu"}_'; expected end of input OMSimulator v3.0.0.post137-g8ed186e-linux-debug info: 1 warnings info: 0 errors
IDEAS_dev	From version 4.0.0-master (d3bfdb3f00733a21fdcabc026d3324e44e61435c) OMSimulator v3.0.0.post137-g8ed186e-linux-debug to 4.0.0-master (d3bfdb3f00733a21fdcabc026d3324e44e61435c) warning: Failed to load settings: [json.exception.parse_error.101] parse error at line 3, column 2: syntax error while parsing value - invalid literal; last read: '"temp_AixLib_AixLib_Fluid_HeatPumps_Validation_ReciprocatingWaterToWater_Static_fmu"}_'; expected end of input OMSimulator v3.0.0.post137-g8ed186e-linux-debug info: 1 warnings info: 0 errors
Modelica_trunk	From version trunk (https://github.com/OpenModelica/OpenModelica-ModelicaStandardLibrary/archive/e99d086b1b7e87cf314766d2e6e872dbc6687611.zip) OMSimulator v3.0.0.post137-g8ed186e-linux-debug to trunk (https://github.com/OpenModelica/OpenModelica-ModelicaStandardLibrary/archive/e99d086b1b7e87cf314766d2e6e872dbc6687611.zip) warning: Failed to load settings: [json.exception.parse_error.101] parse error at line 3, column 2: syntax error while parsing value - invalid literal; last read: '"temp_AixLib_AixLib_Fluid_HeatPumps_Validation_ReciprocatingWaterToWater_Static_fmu"}_'; expected end of input OMSimulator v3.0.0.post137-g8ed186e-linux-debug info: 1 warnings info: 0 errors
PowerSystems	From version 2.0.0 (https://github.com/modelica-3rdparty/PowerSystems/archive/1ecfd2648d7cd54ed88926594455b713186529de.zip) OMSimulator v3.0.0.post137-g8ed186e-linux-debug to 2.0.0 (https://github.com/modelica-3rdparty/PowerSystems/archive/1ecfd2648d7cd54ed88926594455b713186529de.zip) warning: Failed to load settings: [json.exception.parse_error.101] parse error at line 3, column 2: syntax error while parsing value - invalid literal; last read: '"temp_AixLib_AixLib_Fluid_HeatPumps_Validation_ReciprocatingWaterToWater_Static_fmu"}_'; expected end of input OMSimulator v3.0.0.post137-g8ed186e-linux-debug info: 1 warnings info: 0 errors
PowerSystems_latest	From version 2.0.0-master (1ecfd2648d7cd54ed88926594455b713186529de) OMSimulator v3.0.0.post137-g8ed186e-linux-debug to 2.0.0-master (1ecfd2648d7cd54ed88926594455b713186529de) warning: Failed to load settings: [json.exception.parse_error.101] parse error at line 3, column 2: syntax error while parsing value - invalid literal; last read: '"temp_AixLib_AixLib_Fluid_HeatPumps_Validation_ReciprocatingWaterToWater_Static_fmu"}_'; expected end of input OMSimulator v3.0.0.post137-g8ed186e-linux-debug info: 1 warnings info: 0 errors
ThermofluidStream	From version 1.2.0 (https://github.com/DLR-SR/ThermofluidStream/archive/8d2287a558d9d5e3a6235c981d5a60044dae5b61.zip) OMSimulator v3.0.0.post137-g8ed186e-linux-debug to 1.2.0 (https://github.com/DLR-SR/ThermofluidStream/archive/8d2287a558d9d5e3a6235c981d5a60044dae5b61.zip) warning: Failed to load settings: [json.exception.parse_error.101] parse error at line 3, column 2: syntax error while parsing value - invalid literal; last read: '"temp_AixLib_AixLib_Fluid_HeatPumps_Validation_ReciprocatingWaterToWater_Static_fmu"}_'; expected end of input OMSimulator v3.0.0.post137-g8ed186e-linux-debug info: 1 warnings info: 0 errors

Models Affected

AixLib	AixLib.Systems.ModularAHU.Validation.AHU2_Preheater (sim)	Compile → Failed
BuildingSystems	BuildingSystems.Fluid.Geothermal.Borefields.BaseClasses.Boreholes.BaseClasses.Examples.InternalHEXOneUTube (sim)	Compile → Simulate
Buildings_11	Buildings.ThermalZones.Detailed.Examples.FFD.Tutorial.MixedConvection (sim)	Simulate performance 1.45 → 0:07:02
Buildings_12	Buildings.Fluid.Geothermal.Borefields.BaseClasses.Boreholes.BaseClasses.Examples.InternalHEXTwoUTube (sim)	Compile → Verify
Buildings_latest	Buildings.Fluid.Geothermal.Borefields.BaseClasses.Boreholes.BaseClasses.Examples.InternalHEXOneUTube (sim)	Compile → Verify
Buildings_latest	Buildings.Fluid.Geothermal.Borefields.BaseClasses.Boreholes.BaseClasses.Examples.InternalHEXTwoUTube (sim)	Compile → Verify
Buildings_latest	Buildings.ThermalZones.Detailed.Examples.FFD.Tutorial.MixedConvection (sim)	Simulate performance 0:14:02 → 1.43
IBPSA_latest	IBPSA.Fluid.Geothermal.Borefields.BaseClasses.Boreholes.BaseClasses.Examples.InternalHEXOneUTube (sim)	Compile → Simulate
IBPSA_latest	IBPSA.Fluid.Geothermal.Borefields.BaseClasses.Boreholes.BaseClasses.Examples.InternalHEXTwoUTube (sim)	Compile → Simulate
IDEAS	IDEAS.Fluid.Geothermal.Borefields.BaseClasses.Boreholes.BaseClasses.Examples.InternalHEXOneUTube (sim)	Compile → Simulate
IDEAS	IDEAS.Fluid.Geothermal.Borefields.BaseClasses.Boreholes.BaseClasses.Examples.InternalHEXTwoUTube (sim)	Compile → Simulate
IDEAS_dev	IDEAS.Fluid.Geothermal.Borefields.BaseClasses.Boreholes.BaseClasses.Examples.InternalHEXOneUTube (sim)	Compile → Simulate
IDEAS_dev	IDEAS.Fluid.Geothermal.Borefields.BaseClasses.Boreholes.BaseClasses.Examples.InternalHEXTwoUTube (sim)	Compile → Simulate
Modelica_trunk	Modelica.Fluid.Examples.HeatingSystem (sim)	Simulate performance 30.29 → 1.30
Modelica_trunk	Modelica.Mechanics.MultiBody.Examples.Systems.RobotR3.FullRobot (sim)	Simulate performance 32.02 → 2.85
Modelica_trunk	Modelica.Mechanics.MultiBody.Examples.Systems.RobotR3.OneAxis (sim)	Simulate performance 30.22 → 1.21
PowerSystems	PowerSystems.Examples.AC3ph.Generation.GenOrder3and7 (sim)	Simulate → Compile
PowerSystems	PowerSystems.Examples.AC3ph.Generation.TurbineGenerator (sim)	Compile → Simulate
PowerSystems	PowerSystems.Examples.AC3ph.Generation.TurboGeneratorLine (sim)	Compile → Simulate
PowerSystems	PowerSystems.Examples.AC3ph.Generation.TurboGroupGenerator (sim)	Simulate → Compile
PowerSystems_latest	PowerSystems.Examples.AC3ph.Drives.SM_ctrl (sim)	Verify → Compile
ScalableTestSuite_noopt	ScalableTestSuite.Electrical.DistributionSystemDC.ScaledExperiments.DistributionSystemModelicaActiveLoads_N_56_M_56 (sim)	Simulate performance 5.50 → 16.25
ScalableTestSuite_noopt	ScalableTestSuite.Electrical.DistributionSystemDC.ScaledExperiments.DistributionSystemModelicaActiveLoads_N_80_M_80 (sim)	Simulate performance 27.09 → 15.36
ScalableTestSuite_noopt	ScalableTestSuite.Electrical.DistributionSystemDC.ScaledExperiments.DistributionSystemModelica_N_112_M_112 (sim)	Failed → Verify
ScalableTestSuite_noopt	ScalableTestSuite.Electrical.DistributionSystemDC.ScaledExperiments.DistributionSystemModelica_N_80_M_80 (sim)	BackEnd performance 0:01:09 → 0:02:21
ScalableTestSuite_noopt	ScalableTestSuite.Elementary.SimpleODE.ScaledExperiments.CascadedFirstOrder_N_25600 (sim)	BackEnd performance 22.35 → 50.64
ThermofluidStream	ThermofluidStream.HeatExchangers.Tests.Recuperator (sim)	Simulate performance 16.54 → 7.44