OpenModelica v1.27-fmi from 2026-07-19 03:14:38 to 2026-07-25 11:42:31

Summary

OMC Commits2
Libraries Changed1
Number of Improvements5
Number of Regressions2
Number of Performance Improvements5
Number of Performance Regressions14

OpenModelica Changes

CommitDateAuthorSummary
bf9d4f3aa52026-07-21 11:03:42 +0200AndreasSimulationRuntime: Fix segfault when spatialDistribution second output is unused (#16065) (#16095)
4470062c3a2026-07-21 01:34:36 +0300Adrian PopEmit the functions the FMIDERINIT jacobian calls (#16054) (#16068) (#16088)

OpenModelicaLibraryTesting Changes

CommitDateAuthorSummary
6697fc02026-07-06 18:25:17 +0200linuslangenkamp[GBODE] set Radau IIA 3-stage, remove embedded error estimate (#288)
d357aff2026-06-12 13:26:07 +0200AndreasFix OMSimulator submodule update when directory layout changes (#287)

Library Changes

LibraryChange
Buildings_latestFrom version 14.0.0-master (https://github.com/lbl-srg/modelica-buildings/archive/36854481a51c26c04c6333ab07d75880d24fa097.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.post149-g3d3018b-linux-debug info: 1 warnings info: 0 errors to 14.0.0-master (https://github.com/lbl-srg/modelica-buildings/archive/c4117ccec1f288ee6bc7f0ee0cb40a45d6940b0c.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.post149-g3d3018b-linux-debug info: 1 warnings info: 0 errors

Models Affected

AixLibAixLib.ThermalZones.HighOrder.Examples.OFDHeatLoad (sim)SimCode performance 29.72 → 0:01:58
BuildSysProBuildSysPro.IBPSA.Fluid.Geothermal.Borefields.Validation.ConstantHeatInjection_100Boreholes (sim)
Buildings_11Buildings.ThermalZones.Detailed.Examples.FFD.Tutorial.MixedConvection (sim)Simulate performance 0:07:02 → 1.50
Buildings_12Buildings.DHC.ETS.Combined.Examples.ChillerBorefield (sim)SimCode performance 29.31 → 11.34
Buildings_12Buildings.DHC.ETS.Combined.Subsystems.Validation.Borefield (sim)SimCode performance 11.02 → 30.97
Buildings_12Buildings.DHC.ETS.Combined.Validation.ChillerBorefield (sim)SimCode performance 30.86 → 13.98
Buildings_latestBuildings.Fluid.DXSystems.Cooling.AirSource.Examples.MultiStage (sim)Verify → Compile
Buildings_latestBuildings.Fluid.DXSystems.Cooling.AirSource.Examples.VariableSpeed (sim)Compile → Verify
Buildings_latestBuildings.Fluid.DXSystems.Cooling.AirSource.Validation.SingleSpeed (sim)Verify → Compile
Buildings_latestBuildings.Fluid.DXSystems.Cooling.WaterSource.Examples.MultiStage (sim)Compile → Verify
Buildings_latestBuildings.Fluid.DXSystems.Cooling.WaterSource.Examples.SingleSpeed (sim)Compile → Verify
Buildings_latestBuildings.Fluid.Geothermal.Borefields.Validation.ConstantHeatInjection_100Boreholes (sim)SimCode performance 12.44 → 21.25
Buildings_latestBuildings.Templates.Components.Validation.Coils (sim)Compile → Verify
Buildings_latestBuildings.ThermalZones.Detailed.Validation.TestConditionalConstructions.SampledModel.OnlyExteriorWallWithWindowInteriorShade (sim)SimCode performance 6.34 → 11.89
IDEASIDEAS.Fluid.Geothermal.Borefields.Validation.ConstantHeatInjection_100Boreholes (sim)SimCode performance 21.48 → 7.50
PhysiolibraryPhysiolibrary.Fluid.Examples.BloodGasesTransport.BloodyMary (sim)Compile performance 0:02:57 → 0:01:25
PhysiolibraryPhysiolibrary.Organs.Lungs.Examples.MeanLungsTest (sim)Failed → Compile
SOFCPoliMiSOFCPoliMi.Tests.BenchmarkLinConcLosses (sim)SimCode performance 16.48 → 33.07
SOFCPoliMiSOFCPoliMi.Tests.BenchmarkNonLinConcLossesHigherPorosity (sim)SimCode performance 16.25 → 31.95
ScalableTestSuiteScalableTestSuite.Thermal.HeatConduction.ScaledExperiments.OneDHeatTransferTI_Modelica_N_1280 (sim)Compile performance 0:01:29 → 0:02:54
ScalableTestSuite_nooptScalableTestSuite.Electrical.DistributionSystemDC.ScaledExperiments.DistributionSystemModelicaActiveLoads_N_56_M_56 (sim)Simulate performance 5.48 → 10.68
ScalableTestSuite_nooptScalableTestSuite.Electrical.DistributionSystemDC.ScaledExperiments.DistributionSystemModelicaActiveLoads_N_80_M_80 (sim)Simulate performance 16.95 → 33.14
ScalableTestSuite_nooptScalableTestSuite.Electrical.DistributionSystemDC.ScaledExperiments.DistributionSystemModelica_N_80_M_80 (sim)Simulate performance 6.07 → 12.13
ScalableTestSuite_nooptScalableTestSuite.Elementary.SimpleODE.ScaledExperiments.CascadedFirstOrder_N_25600 (sim)Simulate performance 12.62 → 25.86
ThermofluidStreamThermofluidStream.HeatExchangers.Tests.Recuperator (sim)Simulate performance 18.82 → 34.79
ThermofluidStreamThermofluidStream.Topology.Tests.TestNonPhysical (sim)Compile performance 18.74 → 34.96
ThermofluidStream_devThermofluidStream.HeatExchangers.Tests.FlowRes (sim)Compile performance 0:01:28 → 0:02:35