OpenModelica v1.25-fmi from 2026-03-20 16:10:08 to 2026-03-29 18:09:53

Summary

OMC Commits0
Libraries Changed14
Number of Improvements31
Number of Regressions21
Number of Performance Improvements1
Number of Performance Regressions5

OpenModelica Changes

CommitDateAuthorSummary

OpenModelicaLibraryTesting Changes

CommitDateAuthorSummary
dbfd1362026-03-27 15:34:11 +0100linuslangenkamp[GBODE] set ESDIRK4 as default integrator (#281)
2a49f692026-03-26 20:37:38 +0100AndreaBartoliniAdd ThermoPower branch v4.0.0-dev to the CI (#280)

Library Changes

LibraryChange
AixLibFrom version 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 4, column 1: syntax error while parsing value - unexpected '}'; expected end of input OMSimulator v3.0.0.post127-g0b655a2-linux-debug info: 1 warnings info: 0 errors 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 4, column 1: syntax error while parsing value - unexpected '}'; expected end of input OMSimulator v3.0.0.post135-g49be467-linux-debug info: 1 warnings info: 0 errors
BuildingSystemsFrom version 2.0.0-master (37f23a121434b999f66f0bf7ee16bb67ad8b2b83) warning: Failed to load settings: [json.exception.parse_error.101] parse error at line 4, column 1: syntax error while parsing value - unexpected '}'; expected end of input OMSimulator v3.0.0.post127-g0b655a2-linux-debug info: 1 warnings info: 0 errors to 2.0.0-master (37f23a121434b999f66f0bf7ee16bb67ad8b2b83) warning: Failed to load settings: [json.exception.parse_error.101] parse error at line 4, column 1: syntax error while parsing value - unexpected '}'; expected end of input OMSimulator v3.0.0.post135-g49be467-linux-debug info: 1 warnings info: 0 errors
Buildings_11From version 11.1.1-maint.11.x (https://github.com/lbl-srg/modelica-buildings/archive/12f5f1987db61d7bf56fed5e07af2dd807f74cfa.zip) warning: Failed to load settings: [json.exception.parse_error.101] parse error at line 4, column 1: syntax error while parsing value - unexpected '}'; expected end of input OMSimulator v3.0.0.post127-g0b655a2-linux-debug info: 1 warnings info: 0 errors to 11.1.1-maint.11.x (https://github.com/lbl-srg/modelica-buildings/archive/8ffaefad4792181db2d71f08f9077bcc535dee17.zip) warning: Failed to load settings: [json.exception.parse_error.101] parse error at line 4, column 1: syntax error while parsing value - unexpected '}'; expected end of input OMSimulator v3.0.0.post135-g49be467-linux-debug info: 1 warnings info: 0 errors
Buildings_12From version 12.1.1-maint.12.x (https://github.com/lbl-srg/modelica-buildings/archive/72423dd099c34c383be7b88ae280b1f5c1589d60.zip) warning: Failed to load settings: [json.exception.parse_error.101] parse error at line 4, column 1: syntax error while parsing value - unexpected '}'; expected end of input OMSimulator v3.0.0.post127-g0b655a2-linux-debug info: 1 warnings info: 0 errors to 12.1.1-maint.12.x (https://github.com/lbl-srg/modelica-buildings/archive/8fbca51d4f79a1a88f2a6788a1c8ef7464db747c.zip) warning: Failed to load settings: [json.exception.parse_error.101] parse error at line 4, column 1: syntax error while parsing value - unexpected '}'; expected end of input OMSimulator v3.0.0.post135-g49be467-linux-debug info: 1 warnings info: 0 errors
Buildings_latestFrom version 13.0.0-master (https://github.com/lbl-srg/modelica-buildings/archive/88e7ea4b03cb8226c507cf895296dbbd07ced552.zip) warning: Failed to load settings: [json.exception.parse_error.101] parse error at line 4, column 1: syntax error while parsing value - unexpected '}'; expected end of input OMSimulator v3.0.0.post127-g0b655a2-linux-debug info: 1 warnings info: 0 errors to 13.0.0-master (https://github.com/lbl-srg/modelica-buildings/archive/dc18485a811428470bad3288af1371c771173d82.zip) warning: Failed to load settings: [json.exception.parse_error.101] parse error at line 4, column 1: syntax error while parsing value - unexpected '}'; expected end of input OMSimulator v3.0.0.post135-g49be467-linux-debug info: 1 warnings info: 0 errors
ClaRaFrom version 1.9.0 (https://github.com/xrg-simulation/ClaRa-official/archive/d0b3d7d61cbf534db51ada4217b4aaea9cf5f557.zip) warning: Failed to load settings: [json.exception.parse_error.101] parse error at line 4, column 1: syntax error while parsing value - unexpected '}'; expected end of input OMSimulator v3.0.0.post127-g0b655a2-linux-debug info: 1 warnings info: 0 errors to 1.9.0 (https://github.com/xrg-simulation/ClaRa-official/archive/d0b3d7d61cbf534db51ada4217b4aaea9cf5f557.zip) warning: Failed to load settings: [json.exception.parse_error.101] parse error at line 4, column 1: syntax error while parsing value - unexpected '}'; expected end of input OMSimulator v3.0.0.post135-g49be467-linux-debug info: 1 warnings info: 0 errors
GreenhousesFrom version 1.0.0-master (845525ed51e3048447839e8896e25f3690c02eb9) warning: Failed to load settings: [json.exception.parse_error.101] parse error at line 4, column 1: syntax error while parsing value - unexpected '}'; expected end of input OMSimulator v3.0.0.post127-g0b655a2-linux-debug info: 1 warnings info: 0 errors to 1.0.0-master (845525ed51e3048447839e8896e25f3690c02eb9) warning: Failed to load settings: [json.exception.parse_error.101] parse error at line 4, column 1: syntax error while parsing value - unexpected '}'; expected end of input OMSimulator v3.0.0.post135-g49be467-linux-debug info: 1 warnings info: 0 errors
IDEASFrom version 3.0.0 (https://github.com/open-ideas/IDEAS/archive/a7be00b7e07943c0acda1b5799a8d32bea896d7b.zip) warning: Failed to load settings: [json.exception.parse_error.101] parse error at line 4, column 1: syntax error while parsing value - unexpected '}'; expected end of input OMSimulator v3.0.0.post127-g0b655a2-linux-debug info: 1 warnings info: 0 errors to 3.0.0 (https://github.com/open-ideas/IDEAS/archive/a7be00b7e07943c0acda1b5799a8d32bea896d7b.zip) warning: Failed to load settings: [json.exception.parse_error.101] parse error at line 4, column 1: syntax error while parsing value - unexpected '}'; expected end of input OMSimulator v3.0.0.post135-g49be467-linux-debug info: 1 warnings info: 0 errors
Modelica_3.2.3From version 3.2.3+maint.om (https://github.com/OpenModelica/OpenModelica-ModelicaStandardLibrary/archive/efd981a1176f124938d6d6759f7c09e0fbf55ddf.zip) warning: Failed to load settings: [json.exception.parse_error.101] parse error at line 4, column 1: syntax error while parsing value - unexpected '}'; expected end of input OMSimulator v3.0.0.post127-g0b655a2-linux-debug info: 1 warnings info: 0 errors to 3.2.3+maint.om (https://github.com/OpenModelica/OpenModelica-ModelicaStandardLibrary/archive/efd981a1176f124938d6d6759f7c09e0fbf55ddf.zip) warning: Failed to load settings: [json.exception.parse_error.101] parse error at line 4, column 1: syntax error while parsing value - unexpected '}'; expected end of input OMSimulator v3.0.0.post135-g49be467-linux-debug info: 1 warnings info: 0 errors
Modelica_4.0.0From version 4.0.0+maint.om (96032134c36668898e1693e69bd9f81aa38de3dd) warning: Failed to load settings: [json.exception.parse_error.101] parse error at line 4, column 1: syntax error while parsing value - unexpected '}'; expected end of input OMSimulator v3.0.0.post127-g0b655a2-linux-debug info: 1 warnings info: 0 errors to 4.0.0+maint.om (96032134c36668898e1693e69bd9f81aa38de3dd) warning: Failed to load settings: [json.exception.parse_error.101] parse error at line 4, column 1: syntax error while parsing value - unexpected '}'; expected end of input OMSimulator v3.0.0.post135-g49be467-linux-debug info: 1 warnings info: 0 errors
OpenIPSL_2.0.0From version 2.0.0 (https://github.com/OpenIPSL/OpenIPSL/archive/052ec37cdfd40e6e5506ec146d98afd40fe2792f.zip) warning: Failed to load settings: [json.exception.parse_error.101] parse error at line 4, column 1: syntax error while parsing value - unexpected '}'; expected end of input OMSimulator v3.0.0.post127-g0b655a2-linux-debug info: 1 warnings info: 0 errors to 2.0.0 (https://github.com/OpenIPSL/OpenIPSL/archive/052ec37cdfd40e6e5506ec146d98afd40fe2792f.zip) warning: Failed to load settings: [json.exception.parse_error.101] parse error at line 4, column 1: syntax error while parsing value - unexpected '}'; expected end of input OMSimulator v3.0.0.post135-g49be467-linux-debug info: 1 warnings info: 0 errors
SOFCPoliMiFrom version master (85098e6eef87802fc5a24ea56db0d6a6ccadbb38) warning: Failed to load settings: [json.exception.parse_error.101] parse error at line 4, column 1: syntax error while parsing value - unexpected '}'; expected end of input OMSimulator v3.0.0.post127-g0b655a2-linux-debug info: 1 warnings info: 0 errors to master (85098e6eef87802fc5a24ea56db0d6a6ccadbb38) warning: Failed to load settings: [json.exception.parse_error.101] parse error at line 4, column 1: syntax error while parsing value - unexpected '}'; expected end of input OMSimulator v3.0.0.post135-g49be467-linux-debug info: 1 warnings info: 0 errors
ScalableTestGrids_nooptFrom version 1.2.0 (https://github.com/PowerGrids/ScalableTestGrids/archive/f18d08e87f948a85992343913e1adfd7d24cad95.zip) warning: Failed to load settings: [json.exception.parse_error.101] parse error at line 4, column 1: syntax error while parsing value - unexpected '}'; expected end of input OMSimulator v3.0.0.post127-g0b655a2-linux-debug info: 1 warnings info: 0 errors to 1.2.0 (https://github.com/PowerGrids/ScalableTestGrids/archive/f18d08e87f948a85992343913e1adfd7d24cad95.zip) warning: Failed to load settings: [json.exception.parse_error.101] parse error at line 4, column 1: syntax error while parsing value - unexpected '}'; expected end of input OMSimulator v3.0.0.post135-g49be467-linux-debug info: 1 warnings info: 0 errors
ScalableTestSuiteFrom version 2.2.0-master (ce9eedecd9f6c487d11cfc2ed9724e75c0229323) warning: Failed to load settings: [json.exception.parse_error.101] parse error at line 4, column 1: syntax error while parsing value - unexpected '}'; expected end of input OMSimulator v3.0.0.post127-g0b655a2-linux-debug info: 1 warnings info: 0 errors to 2.2.0-master (ce9eedecd9f6c487d11cfc2ed9724e75c0229323) warning: Failed to load settings: [json.exception.parse_error.101] parse error at line 4, column 1: syntax error while parsing value - unexpected '}'; expected end of input OMSimulator v3.0.0.post135-g49be467-linux-debug info: 1 warnings info: 0 errors

Models Affected

AixLibAixLib.Fluid.Geothermal.Borefields.Validation.ConstantHeatInjection_100Boreholes (sim)Compile → Failed
BuildingSystemsBuildingSystems.Applications.PhotovoltaicSystems.PhotovoltaicSystem (sim)Compile → Simulate
Buildings_11Buildings.DHC.ETS.Combined.Validation.ChillerWSE (sim)Failed → Verify
Buildings_11Buildings.DHC.Loads.BaseClasses.Validation.BenchmarkFlowDistribution2 (sim)Compile performance 0:01:40 → 0:02:55
Buildings_11Buildings.ThermalZones.Detailed.Examples.FFD.Tutorial.MixedConvection (sim)Simulate performance 4.90 → 0:07:02
Buildings_11Buildings.ThermalZones.Detailed.Validation.BESTEST.Cases6xx.Case610 (sim)Failed → Simulate
Buildings_11Buildings.ThermalZones.Detailed.Validation.BESTEST.Cases6xx.Case650 (sim)Failed → Verify
Buildings_11Buildings.ThermalZones.Detailed.Validation.BESTEST.Cases6xx.Case670 (sim)Failed → Simulate
Buildings_11Buildings.ThermalZones.Detailed.Validation.BESTEST.Cases9xx.Case940 (sim)Simulate → Failed
Buildings_11Buildings.ThermalZones.Detailed.Validation.BESTEST.Cases9xx.Case950 (sim)Compile → Failed
Buildings_11Buildings.ThermalZones.Detailed.Validation.TestConditionalConstructions.OnlyExteriorWallWithWindowExteriorShade (sim)Verify → Failed
Buildings_11Buildings.ThermalZones.EnergyPlus_9_6_0.Examples.SmallOffice.ASHRAE2006Spring (sim)Compile → Failed
Buildings_11Buildings.ThermalZones.EnergyPlus_9_6_0.Examples.SmallOffice.ASHRAE2006Summer (sim)Compile → Failed
Buildings_11Buildings.ThermalZones.EnergyPlus_9_6_0.Examples.SmallOffice.ASHRAE2006Winter (sim)Failed → Compile
Buildings_12Buildings.DHC.ETS.Combined.Examples.ChillerOnly (sim)Failed → Verify
Buildings_12Buildings.DHC.ETS.Combined.Validation.ChillerOnly (sim)Simulate → Failed
Buildings_12Buildings.ThermalZones.Detailed.Validation.BESTEST.Cases6xx.Case600FF (sim)Failed → Verify
Buildings_12Buildings.ThermalZones.Detailed.Validation.BESTEST.Cases6xx.Case610 (sim)Failed → Simulate
Buildings_12Buildings.ThermalZones.Detailed.Validation.BESTEST.Cases9xx.Case940 (sim)Simulate → Failed
Buildings_12Buildings.ThermalZones.Detailed.Validation.TestConditionalConstructions.OnlyExteriorWallWithWindowInteriorShade (sim)Compile performance 0:02:04 → 0:04:01
Buildings_12Buildings.ThermalZones.Detailed.Validation.TestConditionalConstructions.SampledModel.OnlyExteriorWallWithWindowExteriorShade (sim)Verify → Failed
Buildings_12Buildings.ThermalZones.Detailed.Validation.TestConditionalConstructions.SampledModel.OnlyExteriorWallWithWindowInteriorShade (sim)Verify → Failed
Buildings_12Buildings.ThermalZones.EnergyPlus_24_2_0.Examples.SmallOffice.ASHRAE2006Spring (sim)Compile → Failed
Buildings_12Buildings.ThermalZones.EnergyPlus_24_2_0.Examples.SmallOffice.ASHRAE2006Winter (sim)Failed → Compile
Buildings_latestBuildings.Applications.DataCenters.ChillerCooled.Examples.IntegratedPrimarySecondaryEconomizer (sim)Verify → Failed
Buildings_latestBuildings.Controls.OBC.ASHRAE.G36.FanCoilUnits.Subsequences.Validation.SupplyAirTemperature (sim)Simulate → Verify
Buildings_latestBuildings.Controls.OBC.ASHRAE.G36.FanCoilUnits.Validation.Controller (sim)Simulate → Verify
Buildings_latestBuildings.Controls.OBC.Utilities.Validation.PIDWithEnable (sim)Simulate → Verify
Buildings_latestBuildings.DHC.ETS.Combined.Subsystems.Validation.HeatExchanger (sim)Simulate → Verify
Buildings_latestBuildings.DHC.Loads.BaseClasses.Examples.CouplingSpawnZ6 (sim)Failed → Compile
Buildings_latestBuildings.DHC.Loads.Combined.Examples.BuildingTimeSeriesWithETS (sim)Failed → Compile
Buildings_latestBuildings.Fluid.AirFilters.BaseClasses.Validation.FiltrationEfficiency (sim)Simulate → Verify
Buildings_latestBuildings.Fluid.AirFilters.BaseClasses.Validation.FlowCoefficientCorrection (sim)Simulate → Verify
Buildings_latestBuildings.Fluid.AirFilters.BaseClasses.Validation.MassAccumulation (sim)Simulate → Verify
Buildings_latestBuildings.Fluid.AirFilters.BaseClasses.Validation.MassTransfer (sim)Simulate → Verify
Buildings_latestBuildings.Fluid.AirFilters.BaseClasses.Validation.PressureDropWithVaryingFlowCoefficient (sim)Simulate → Verify
Buildings_latestBuildings.Fluid.AirFilters.Examples.SpaceCooling (sim)Simulate → Verify
Buildings_latestBuildings.Fluid.FixedResistances.Examples.PlugFlowPipe (sim)Simulate → Verify
Buildings_latestBuildings.Templates.Plants.Controls.StagingRotation.Validation.EquipmentAvailability (sim)Simulate → Verify
Buildings_latestBuildings.ThermalZones.Detailed.Validation.BESTEST.Cases9xx.Case900 (sim)Simulate → Failed
Buildings_latestBuildings.ThermalZones.Detailed.Validation.BESTEST.Cases9xx.Case900FF (sim)Verify → Failed
Buildings_latestBuildings.ThermalZones.Detailed.Validation.TestConditionalConstructions.SampledModel.OnlyExteriorWallWithWindow (sim)Failed → Verify
Buildings_latestBuildings.ThermalZones.Detailed.Validation.TestConditionalConstructions.SampledModel.OnlyExteriorWallWithWindowExteriorShade (sim)Verify → Failed
Buildings_latestBuildings.ThermalZones.EnergyPlus_24_2_0.Examples.SmallOffice.ASHRAE2006Winter (sim)Compile → Failed
ClaRaClaRa.Components.Furnace.Check.Test_burner_adiabatic_fuelDrying (sim)Failed → Verify
GreenhousesGreenhouses.Examples.GlobalSystem_1 (sim)Failed → Compile
GreenhousesGreenhouses.Examples.GlobalSystem_2 (sim)Failed → Compile
IDEASIDEAS.Examples.Tutorial.Example5 (sim)Simulate → Failed
IDEASIDEAS.Examples.Tutorial.Example6 (sim)Compile → Failed
IDEASIDEAS.Examples.Tutorial.Example7 (sim)Simulate → Failed
IDEASIDEAS.Examples.Tutorial.Example8 (sim)Simulate → Failed
Modelica_3.2.3Modelica.Mechanics.MultiBody.Examples.Systems.RobotR3.oneAxis (sim)Simulate performance 26.32 → 0.40
Modelica_4.0.0Modelica.Mechanics.MultiBody.Examples.Systems.RobotR3.FullRobot (sim)Simulate performance 3.75 → 33.81
Modelica_4.0.0Modelica.Mechanics.MultiBody.Examples.Systems.RobotR3.OneAxis (sim)Simulate performance 0.40 → 30.39
OpenIPSL_2.0.0OpenIPSL.Tests.ThreePhase.IEEE13 (sim)Compile → Simulate
SOFCPoliMiSOFCPoliMi.Tests.BenchmarkSalogniColonnaIEA (sim)Failed → Simulate
ScalableTestGrids_nooptScalableTestGrids.Models.Type1.Type1_N_4_M_4 (sim)
ScalableTestGrids_nooptScalableTestGrids.Models.Type2.Type2_noTap___N_3_M_4 (sim)
ScalableTestGrids_nooptScalableTestGrids.Models.Type2.Type2_noTap___N_4_M_4 (sim)
ScalableTestGrids_nooptScalableTestGrids.Models.Type2.Type2_tapEv___N_3_M_4 (sim)
ScalableTestGrids_nooptScalableTestGrids.Models.Type2.Type2_tapEv___N_4_M_4 (sim)
ScalableTestGrids_nooptScalableTestGrids.Models.Type2.Type2_tapNoEv_N_3_M_4 (sim)
ScalableTestGrids_nooptScalableTestGrids.Models.Type2.Type2_tapNoEv_N_4_M_4 (sim)
ScalableTestSuiteScalableTestSuite.Electrical.DistributionSystemAC.ScaledExperiments.DistributionSystemLinearIndividual_N_14_M_14 (sim)Failed → Verify
ScalableTestSuiteScalableTestSuite.Electrical.DistributionSystemAC.ScaledExperiments.DistributionSystemLinear_N_14_M_14 (sim)Verify → Failed