OpenModelica v1.27-fmi from 2026-08-15 21:20:19 to 2026-08-22 22:55:26

Summary

OMC Commits0
Libraries Changed10
Number of Improvements5
Number of Regressions6
Number of Performance Improvements9
Number of Performance Regressions8

OpenModelica Changes

CommitDateAuthorSummary

OpenModelicaLibraryTesting Changes

CommitDateAuthorSummary
921bba42026-08-21 15:55:55 +0200Martin SjölundWorkaround for older Buildings versions (#321)
c963e042026-08-21 15:43:26 +0200Adrian PopRecord the machine that produced each library's results (#320)

Library Changes

LibraryChange
AixLibFrom version 3.0.1 (https://github.com/RWTH-EBC/AixLib/archive/e5df9a8da27833ee391c2f7a0adbcd80278f47d2.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.post163-g0dab0bc-linux info: 1 warnings info: 0 errors to 3.0.1 (https://github.com/RWTH-EBC/AixLib/archive/e5df9a8da27833ee391c2f7a0adbcd80278f47d2.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.post167-g2940ef1-linux info: 1 warnings info: 0 errors
BuildingSystemsFrom version 2.0.0-master (2dfbe6cbb9314bbbd02dc1fec633a4b4ebfb9a7a) 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.post163-g0dab0bc-linux info: 1 warnings info: 0 errors to 2.0.0-master (2dfbe6cbb9314bbbd02dc1fec633a4b4ebfb9a7a) 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.post167-g2940ef1-linux info: 1 warnings info: 0 errors
Buildings_11From version 11.1.2-maint.11.x (https://github.com/lbl-srg/modelica-buildings/archive/266c975c250742658e867a8187ae52786cf1faee.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.post163-g0dab0bc-linux info: 1 warnings info: 0 errors to 11.1.2-maint.11.x (https://github.com/lbl-srg/modelica-buildings/archive/266c975c250742658e867a8187ae52786cf1faee.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.post167-g2940ef1-linux info: 1 warnings info: 0 errors
Buildings_12From version 12.1.2-maint.12.x (https://github.com/lbl-srg/modelica-buildings/archive/4e96182ec2ce24ea97d8d5b345603ad26760fe60.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.post163-g0dab0bc-linux info: 1 warnings info: 0 errors to 12.1.2-maint.12.x (https://github.com/lbl-srg/modelica-buildings/archive/4e96182ec2ce24ea97d8d5b345603ad26760fe60.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.post167-g2940ef1-linux info: 1 warnings info: 0 errors
Buildings_latestFrom version 14.0.0-master (https://github.com/lbl-srg/modelica-buildings/archive/e2e34db8e537c893cbecd33f295b85d55d3004e1.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.post163-g0dab0bc-linux info: 1 warnings info: 0 errors to 14.0.0-master (https://github.com/lbl-srg/modelica-buildings/archive/eccb40b3974bb10eef120c5670a6454e43ca36e3.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.post167-g2940ef1-linux info: 1 warnings info: 0 errors
IDEAS_devFrom version 4.0.0-master (bd51e05f941c0db3690769703f3dd90b8fea5c93) 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.post163-g0dab0bc-linux info: 1 warnings info: 0 errors to 4.0.0-master (bd51e05f941c0db3690769703f3dd90b8fea5c93) 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.post167-g2940ef1-linux info: 1 warnings info: 0 errors
PhysiolibraryFrom version 3.0.0 (https://github.com/MarekMatejak/Physiolibrary/archive/0ef8b5848b8bd08912a1713d0641b6bb03c3e3b2.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.post163-g0dab0bc-linux info: 1 warnings info: 0 errors to 3.0.0 (https://github.com/MarekMatejak/Physiolibrary/archive/0ef8b5848b8bd08912a1713d0641b6bb03c3e3b2.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.post167-g2940ef1-linux info: 1 warnings info: 0 errors
SOFCPoliMiFrom version master (e059ad070d30e9d175fd853aedd372ba9b5efba1) 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.post163-g0dab0bc-linux info: 1 warnings info: 0 errors to master (e059ad070d30e9d175fd853aedd372ba9b5efba1) 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.post167-g2940ef1-linux 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 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.post163-g0dab0bc-linux 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 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.post167-g2940ef1-linux info: 1 warnings info: 0 errors
ScalableTestSuite_nooptFrom version 2.2.0-master (ce9eedecd9f6c487d11cfc2ed9724e75c0229323) 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.post163-g0dab0bc-linux 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 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.post167-g2940ef1-linux info: 1 warnings info: 0 errors

Models Affected

AixLibAixLib.Fluid.Geothermal.Aquifer.Validation.SimulationTest (sim)Failed → Simulate
AixLibAixLib.Fluid.Geothermal.Borefields.Validation.ConstantHeatInjection_100Boreholes (sim)SimCode performance 8.22 → 22.44
AixLibAixLib.Systems.ModularAHU.Validation.AHU2_Preheater (sim)Failed → Compile
AixLibAixLib.ThermalZones.HighOrder.Examples.OFDHeatLoad (sim)SimCode performance 38.87 → 0:01:06
AixLibAixLib.ThermalZones.HighOrder.Examples.OFD_1Jan (sim)SimCode performance 0:01:22 → 32.17
BuildingSystemsBuildingSystems.Fluid.Geothermal.Aquifer.Validation.SimulationTest (sim)Failed → Simulate
Buildings_11Buildings.Air.Systems.SingleZone.VAV.Examples.OptimalStart.Guideline36Spring (sim)
Buildings_11Buildings.DHC.ETS.Combined.Examples.ChillerBorefield (sim)SimCode performance 17.52 → 30.77
Buildings_11Buildings.DHC.ETS.Combined.Subsystems.Validation.Borefield (sim)SimCode performance 40.24 → 21.28
Buildings_11Buildings.DHC.Plants.Combined.Validation.AllElectricCWStorage (sim)Failed → Simulate
Buildings_11Buildings.Fluid.Geothermal.Borefields.Validation.ConstantHeatInjection_100Boreholes (sim)SimCode performance 8.34 → 16.90
Buildings_11Buildings.ThermalZones.Detailed.Examples.FFD.Tutorial.MixedConvection (sim)Simulate performance 1.34 → 0:07:02
Buildings_12Buildings.Air.Systems.SingleZone.VAV.Examples.OptimalStart.ConventionalWinter (sim)
Buildings_12Buildings.Air.Systems.SingleZone.VAV.Examples.OptimalStart.Guideline36Spring (sim)
Buildings_latestBuildings.Air.Systems.SingleZone.VAV.Examples.OptimalStart.Guideline36Spring (sim)
Buildings_latestBuildings.DHC.Loads.BaseClasses.Examples.CouplingRCZ6 (sim)Verify → Failed
Buildings_latestBuildings.Examples.ScalableBenchmarks.BuildingVAV.ThermalZones.Validation.MultiZone (sim)
Buildings_latestBuildings.Fluid.Geothermal.Borefields.Validation.ConstantHeatInjection_100Boreholes (sim)SimCode performance 24.76 → 14.56
IDEAS_devIDEAS.Fluid.Geothermal.Borefields.Validation.ConstantHeatInjection_100Boreholes (sim)SimCode performance 7.39 → 17.97
PhysiolibraryPhysiolibrary.Organs.Lungs.Examples.MeanLungsTest (sim)Compile → Failed
SOFCPoliMiSOFCPoliMi.Tests.BenchmarkLinConcLosses (sim)SimCode performance 0:01:02 → 35.40
SOFCPoliMiSOFCPoliMi.Tests.BenchmarkLinConcLossesHigherCurrent (sim)SimCode performance 0:01:10 → 34.43
SOFCPoliMiSOFCPoliMi.Tests.BenchmarkNonLinConcLosses (sim)Failed → Compile
ScalableTestSuiteScalableTestSuite.Electrical.DistributionSystemDC.ScaledExperiments.DistributionSystemModelicaActiveLoads_N_28_M_28 (sim)Compile → Failed
ScalableTestSuiteScalableTestSuite.Electrical.DistributionSystemDC.ScaledExperiments.DistributionSystemModelicaActiveLoads_N_56_M_56 (sim)
ScalableTestSuiteScalableTestSuite.Electrical.DistributionSystemDC.ScaledExperiments.DistributionSystemModelica_N_80_M_80 (sim)
ScalableTestSuiteScalableTestSuite.Electrical.TransmissionLine.ScaledExperiments.TransmissionLineModelica_N_640 (sim)Compile → Failed
ScalableTestSuiteScalableTestSuite.Mechanical.FlexibleBeam.ScaledExperiments.FlexibleBeamModelica_N_32 (sim)Compile performance 0:01:59 → 0:03:37
ScalableTestSuiteScalableTestSuite.Thermal.Advection.ScaledExperiments.AdvectionReaction_N_1600 (sim)Simulate performance 0:01:32 → 38.84
ScalableTestSuiteScalableTestSuite.Thermal.Advection.ScaledExperiments.SimpleAdvection_N_1600 (sim)Simulate performance 34.56 → 18.62
ScalableTestSuiteScalableTestSuite.Thermal.HeatConduction.ScaledExperiments.OneDHeatTransferTI_FD_N_1280 (sim)Simulate performance 13.84 → 7.57
ScalableTestSuiteScalableTestSuite.Thermal.HeatExchanger.ScaledExperiments.CounterCurrentHeatExchangerEquations_N_1280 (sim)Compile performance 0:01:43 → 0:03:18
ScalableTestSuite_nooptScalableTestSuite.Electrical.DistributionSystemDC.ScaledExperiments.DistributionSystemModelicaActiveLoads_N_28_M_28 (sim)Compile → Failed
ScalableTestSuite_nooptScalableTestSuite.Thermal.HeatConduction.ScaledExperiments.OneDHeatTransferTI_FD_N_1280 (sim)Simulate performance 17.58 → 7.22
ScalableTestSuite_nooptScalableTestSuite.Thermal.HeatConduction.ScaledExperiments.OneDHeatTransferTT_Modelica_N_1280 (sim)Verify → Failed