OpenModelica master-fmi-fmpy from 2026-04-02 21:29:50 to 2026-04-04 17:01:24

Summary

OMC Commits1
Libraries Changed2
Number of Improvements26
Number of Regressions24
Number of Performance Improvements3
Number of Performance Regressions2

OpenModelica Changes

CommitDateAuthorSummary
d67fe85c892026-04-04 15:32:46 +0200Adrian Popfix for #15300 - filter on discrete variables (#15302)

OpenModelicaLibraryTesting Changes

CommitDateAuthorSummary
8f4dee72026-04-01 15:14:49 +0200linuslangenkamp[GBODE] switch to Radau IIA once again (#282)
dbfd1362026-03-27 15:34:11 +0100linuslangenkamp[GBODE] set ESDIRK4 as default integrator (#281)

Library Changes

LibraryChange
Buildings_12From version 12.1.1-maint.12.x (https://github.com/lbl-srg/modelica-buildings/archive/520fee0b3fa38772968cb544ff29375e9fbace4b.zip) usage: __main__.py [-h] [--version] [--validate] [--start-time START_TIME] FMPy version: 0.3.21 Python version: 3.10.12 (main, Mar 3 2026, 11:56:32) [GCC 11.4.0] --version show program's version number and exit to 12.1.1-maint.12.x (https://github.com/lbl-srg/modelica-buildings/archive/e99e042c0dd0d7cfd19425fe260eb1501486b194.zip) usage: __main__.py [-h] [--version] [--validate] [--start-time START_TIME] FMPy version: 0.3.21 Python version: 3.10.12 (main, Mar 3 2026, 11:56:32) [GCC 11.4.0] --version show program's version number and exit
Buildings_latestFrom version 13.0.0-master (https://github.com/lbl-srg/modelica-buildings/archive/0fe651fe115bcb9e1d2739b4cd9472a36de2c1bc.zip) usage: __main__.py [-h] [--version] [--validate] [--start-time START_TIME] FMPy version: 0.3.21 Python version: 3.10.12 (main, Mar 3 2026, 11:56:32) [GCC 11.4.0] --version show program's version number and exit to 13.0.0-master (https://github.com/lbl-srg/modelica-buildings/archive/f68c083acb36a44f44f2653b60e6580945ae23f4.zip) usage: __main__.py [-h] [--version] [--validate] [--start-time START_TIME] FMPy version: 0.3.21 Python version: 3.10.12 (main, Mar 3 2026, 11:56:32) [GCC 11.4.0] --version show program's version number and exit

Models Affected

BuildingSystemsBuildingSystems.Fluid.Geothermal.Borefields.Validation.ConstantHeatInjection_100Boreholes (sim)Compile → Failed
Buildings_11Buildings.Applications.DataCenters.ChillerCooled.Examples.NonIntegratedPrimarySecondaryEconomizer (sim)Failed → Compile
Buildings_11Buildings.DHC.ETS.Combined.Examples.ChillerOnly (sim)Failed → Compile
Buildings_11Buildings.DHC.Plants.Cooling.Examples.StoragePlantDualSource (sim)Compile → Verify
Buildings_11Buildings.ThermalZones.Detailed.Validation.BESTEST.Cases6xx.Case600 (sim)Compile → Failed
Buildings_11Buildings.ThermalZones.Detailed.Validation.BESTEST.Cases6xx.Case660 (sim)Failed → Compile
Buildings_11Buildings.ThermalZones.Detailed.Validation.BESTEST.Cases6xx.Case670 (sim)Verify → Failed
Buildings_11Buildings.ThermalZones.Detailed.Validation.TestConditionalConstructions.OnlyExteriorWallWithWindow (sim)Failed → Verify
Buildings_11Buildings.ThermalZones.Detailed.Validation.TestConditionalConstructions.OnlyExteriorWallWithWindowExteriorShade (sim)Failed → Verify
Buildings_11Buildings.ThermalZones.Detailed.Validation.TestConditionalConstructions.SampledModel.OnlyExteriorWallWithWindowExteriorShade (sim)Compile performance 0:04:28 → 0:02:09
Buildings_12Buildings.Applications.DataCenters.ChillerCooled.Examples.NonIntegratedPrimarySecondaryEconomizer (sim)Failed → Compile
Buildings_12Buildings.DHC.ETS.Combined.Validation.ChillerOnly (sim)Verify → Failed
Buildings_12Buildings.Fluid.HydronicConfigurations.ActiveNetworks.Examples.DecouplingMixing (sim)Simulate performance 18.06 → 0.47
Buildings_12Buildings.ThermalZones.Detailed.Examples.FFD.Tutorial.MixedConvection (sim)Simulate performance 0:07:02 → 0.39
Buildings_12Buildings.ThermalZones.Detailed.Validation.BESTEST.Cases6xx.Case685 (sim)Compile → Failed
Buildings_12Buildings.ThermalZones.Detailed.Validation.BESTEST.Cases9xx.Case940 (sim)Failed → Compile
Buildings_12Buildings.ThermalZones.Detailed.Validation.TestConditionalConstructions.OnlyExteriorWallWithWindowExteriorShade (sim)Verify → Failed
Buildings_12Buildings.ThermalZones.Detailed.Validation.TestConditionalConstructions.OnlyExteriorWallWithWindowInteriorShade (sim)Verify → Failed
Buildings_12Buildings.ThermalZones.Detailed.Validation.TestConditionalConstructions.SampledModel.OnlyExteriorWallWithWindow (sim)Failed → Compile
Buildings_12Buildings.ThermalZones.Detailed.Validation.TestConditionalConstructions.SampledModel.OnlyExteriorWallWithWindowExteriorShade (sim)Compile performance 0:02:26 → 0:04:29
Buildings_12Buildings.ThermalZones.ISO13790.Validation.BESTEST.Cases6xx.Case685 (sim)Verify → Compile
Buildings_12Buildings.ThermalZones.ISO13790.Validation.BESTEST.Cases9xx.Case920 (sim)Verify → Compile
Buildings_12Buildings.ThermalZones.ISO13790.Validation.BESTEST.Cases9xx.Case980 (sim)Verify → Compile
Buildings_12Buildings.ThermalZones.ISO13790.Validation.BESTEST.Cases9xx.Case985 (sim)Compile → Verify
Buildings_latestBuildings.Applications.DataCenters.ChillerCooled.Examples.NonIntegratedPrimarySecondaryEconomizer (sim)Failed → Compile
Buildings_latestBuildings.DHC.Loads.BaseClasses.Examples.CouplingSpawnZ6 (sim)Failed → Compile
Buildings_latestBuildings.DHC.Loads.Combined.Examples.BuildingTimeSeriesWithETS (sim)Compile → Failed
Buildings_latestBuildings.DHC.Loads.Cooling.Examples.BuildingTimeSeriesWithETS (sim)Verify → Compile
Buildings_latestBuildings.Fluid.HeatPumps.ModularReversible.Examples.TableData2DLoadDepSHC1Only (sim)Simulate → Verify
Buildings_latestBuildings.ThermalZones.Detailed.Validation.BESTEST.Cases6xx.Case670 (sim)Failed → Verify
Buildings_latestBuildings.ThermalZones.Detailed.Validation.TestConditionalConstructions.SampledModel.OnlyExteriorWallWithWindow (sim)Compile → Failed
Buildings_latestBuildings.ThermalZones.Detailed.Validation.TestConditionalConstructions.SampledModel.OnlyExteriorWallWithWindowExteriorShade (sim)Failed → Compile
Buildings_latestBuildings.ThermalZones.EnergyPlus_24_2_0.Examples.SmallOffice.ASHRAE2006Winter (sim)Failed → Compile
GreenhousesGreenhouses.Examples.GlobalSystem_1 (sim)Failed → FrontEnd
GreenhousesGreenhouses.Examples.GlobalSystem_2 (sim)Failed → FrontEnd
GreenhousesGreenhouses.Examples.Greenhouse_1 (sim)Compile → FrontEnd
GreenhousesGreenhouses.Examples.Greenhouse_2 (sim)Compile → FrontEnd
LEPSE_mainLEPSE.Examples.KKT_1 (sim)Verify → Simulate
Modelica_3.2.3Modelica.Electrical.Analog.Examples.ControlledSwitchWithArc (sim)Simulate → Compile
Modelica_3.2.3Modelica.Electrical.Analog.Examples.OpAmps.Multivibrator (sim)Simulate → Compile
Modelica_3.2.3Modelica.Mechanics.MultiBody.Examples.Loops.EngineV6 (sim)Failed → Simulate
Modelica_4.0.0Modelica.Electrical.Analog.Examples.ControlledSwitchWithArc (sim)Simulate → Compile
Modelica_4.0.0Modelica.Electrical.Analog.Examples.OpAmps.Multivibrator (sim)Compile → Simulate
Modelica_4.0.0Modelica.Magnetic.FundamentalWave.Examples.BasicMachines.SynchronousMachines.SMEE_Rectifier (sim)Compile → Simulate
Modelica_trunkModelica.Blocks.Examples.Noise.ActuatorWithNoise (sim)Verify → Compile
Modelica_trunkModelica.Electrical.PowerConverters.Examples.ACDC.RectifierCenterTap2mPulse.ThyristorCenterTap2mPulse_RL (sim)Compile → Simulate
Modelica_trunkModelica.Magnetic.FluxTubes.Examples.Hysteresis.HysteresisModelComparison (sim)Compile → Simulate
OpenIPSLOpenIPSL.Tests.Machines.PSAT.Order3test2 (sim)Simulate performance 0.50 → 10.43
OpenIPSLOpenIPSL.Tests.Machines.PSAT.Order3test2_AVR (sim)Compile → Simulate
OpenIPSL_2.0.0OpenIPSL.Tests.Controls.PSAT.OEL.AVRTypeII_OEL_Test (sim)Compile → Simulate
OpenIPSL_2.0.0OpenIPSL.Tests.Machines.PSAT.Order3test2_AVR (sim)Simulate → Compile
OpenIPSL_devOpenIPSL.Tests.Machines.PSAT.Order3test2_AVR (sim)Simulate → Compile
PhysiolibraryPhysiolibrary.Fluid.Examples.BloodGasesTransport.BloodyMary (sim)Compile → Failed
ScalableTestSuiteScalableTestSuite.Mechanical.FlexibleBeam.ScaledExperiments.FlexibleBeamModelica_N_32 (sim)Failed → Simulate
ScalableTestSuiteScalableTestSuite.Mechanical.Strings.ScaledExperiments.StringModelica_N_32 (sim)Verify → Failed