OpenModelica newInst-newBackend from 2026-05-08 16:24:06 to 2026-05-12 05:20:58

Summary

OMC Commits	0
Libraries Changed	1
Number of Improvements	37
Number of Regressions	48
Number of Performance Improvements	1
Number of Performance Regressions	2

OpenModelica Changes

Commit	Date	Author	Summary

OpenModelicaLibraryTesting Changes

Commit	Date	Author	Summary
1dd4db7	2026-04-19 14:25:16 +0200	Adrian Pop	force fetch of tags to handle the floating tag 'nightly' (#285)
e83c3f4	2026-04-14 08:15:53 +0200	Adrian Pop	cannot run python -m fmpy via check_output_log (#284)

Library Changes

Library	Change
IDEAS	From version (.) to 4.0.0 (https://github.com/open-ideas/IDEAS/archive/24eea8ff8c67d1b32d53429eaaec9c6a3fbaac84.zip)

Models Affected

IDEAS	IDEAS.Airflow.AHU.Validation.AdsolairDatasheetSummer (sim)	Failed → FrontEnd
IDEAS	IDEAS.Airflow.AHU.Validation.IehSummer (sim)	Failed → Templates
IDEAS	IDEAS.Airflow.AHU.Validation.IehWinter (sim)	Failed → Templates
IDEAS	IDEAS.Airflow.Multizone.Examples.ClosedDoors (sim)	Simulate performance 57.06 → 14.15
IDEAS	IDEAS.BoundaryConditions.WeatherData.BaseClasses.Examples.GetAltitudeTMY3 (sim)	Compile → Simulate
IDEAS	IDEAS.BoundaryConditions.WeatherData.BaseClasses.Examples.GetHeaderElement (sim)	Compile → Simulate
IDEAS	IDEAS.BoundaryConditions.WeatherData.BaseClasses.Examples.GetTimeSpanTMY3 (sim)	Templates → Simulate
IDEAS	IDEAS.BoundaryConditions.WeatherData.BaseClasses.Examples.GetTimeSpanTMY3LongHeader (sim)	Templates → Simulate
IDEAS	IDEAS.BoundaryConditions.WeatherData.BaseClasses.Examples.GetTimeSpanTMY3_NonzeroStart (sim)	Templates → Simulate
IDEAS	IDEAS.Buildings.Components.Examples.HorizontalFinExample (sim)	Templates → Failed
IDEAS	IDEAS.Examples.TwinHouses.BaseClasses.Data.Validation.SolarValidation (sim)	FrontEnd → Failed
IDEAS	IDEAS.Fluid.Actuators.Valves.Examples.TwoWayValvePressureIndependent (sim)	Compile → Simulate
IDEAS	IDEAS.Fluid.Actuators.Valves.Examples.TwoWayValveTRV (sim)	Compile → Simulate
IDEAS	IDEAS.Fluid.Actuators.Valves.Simplified.Examples.Thermostatic3WayValve (sim)	Compile → FrontEnd
IDEAS	IDEAS.Fluid.Actuators.Valves.Simplified.Examples.ThreeWayValveMotor (sim)	Compile → FrontEnd
IDEAS	IDEAS.Fluid.Actuators.Valves.Simplified.Examples.ThreeWayValveSwitch (sim)	Compile → FrontEnd
IDEAS	IDEAS.Fluid.Actuators.Valves.Validation.TwoWayValveParameterization (sim)	Compile → Simulate
IDEAS	IDEAS.Fluid.BaseClasses.FlowModels.Validation.BasicFlowFunction_dp_DerivativeCheck2 (sim)	Failed → Simulate
IDEAS	IDEAS.Fluid.BaseClasses.FlowModels.Validation.BasicFlowFunction_m_flow_DerivativeCheck2 (sim)	Failed → Simulate
IDEAS	IDEAS.Fluid.Examples.FlowSystem.Basic (sim)	Compile → FrontEnd
IDEAS	IDEAS.Fluid.Examples.FlowSystem.Simplified1 (sim)	Compile → FrontEnd
IDEAS	IDEAS.Fluid.Examples.FlowSystem.Simplified2 (sim)	Compile → FrontEnd
IDEAS	IDEAS.Fluid.Examples.FlowSystem.Simplified3 (sim)	Compile → FrontEnd
IDEAS	IDEAS.Fluid.Examples.FlowSystem.Simplified4 (sim)	Compile → FrontEnd
IDEAS	IDEAS.Fluid.Examples.FlowSystem.Simplified5 (sim)	Compile → FrontEnd
IDEAS	IDEAS.Fluid.Examples.FlowSystem.Simplified6 (sim)	Compile → FrontEnd
IDEAS	IDEAS.Fluid.Examples.Performance.Example1v1 (sim)	Compile → FrontEnd
IDEAS	IDEAS.Fluid.Examples.Performance.Example1v2 (sim)	Templates → FrontEnd
IDEAS	IDEAS.Fluid.Examples.Performance.PressureDrop.SeriesParallelDp (sim)	Compile → Simulate
IDEAS	IDEAS.Fluid.Examples.ResistanceVolumeFlowReversal (sim)	Templates → FrontEnd
IDEAS	IDEAS.Fluid.FMI.Adaptors.Examples.ThermalZoneHVACNoExhaust (sim)	Templates → FrontEnd
IDEAS	IDEAS.Fluid.FMI.Adaptors.Examples.ThermalZoneHVACWithExhaust (sim)	Templates → FrontEnd
IDEAS	IDEAS.Fluid.FixedResistances.Examples.CheckValve (sim)	Simulate → FrontEnd
IDEAS	IDEAS.Fluid.Geothermal.Borefields.BaseClasses.HeatTransfer.LoadAggregation.Validation.TemperatureResponseMatrix (sim)	BackEnd performance 7.00 → 0:02:26
IDEAS	IDEAS.Fluid.Geothermal.Borefields.BaseClasses.HeatTransfer.ThermalResponseFactors.Validation.GFunction_100boreholes (sim)	Simulate → FrontEnd
IDEAS	IDEAS.Fluid.Geothermal.Borefields.BaseClasses.HeatTransfer.ThermalResponseFactors.Validation.GFunction_1borehole_5meters (sim)	Compile → FrontEnd
IDEAS	IDEAS.Fluid.Geothermal.Borefields.BaseClasses.HeatTransfer.ThermalResponseFactors.Validation.GFunction_SmallScaleValidation (sim)	Compile → FrontEnd
IDEAS	IDEAS.Fluid.Geothermal.Borefields.BaseClasses.HeatTransfer.ThermalResponseFactors.Validation.ShaGFunction (sim)	Templates → Simulate
IDEAS	IDEAS.Fluid.HeatExchangers.ActiveBeams.Validation.NumberOfBeams (sim)	Templates → FrontEnd
IDEAS	IDEAS.Fluid.HeatExchangers.ActiveBeams.Validation.NumberOfBeamsDynamics (sim)	Templates → FrontEnd
IDEAS	IDEAS.Fluid.HeatExchangers.Examples.AirHeater_T (sim)	Templates → FrontEnd
IDEAS	IDEAS.Fluid.HeatExchangers.Examples.EmbeddedPipe (sim)	Failed → Compile
IDEAS	IDEAS.Fluid.HeatExchangers.Examples.EmbeddedPipeDp (sim)	Failed → FrontEnd
IDEAS	IDEAS.Fluid.HeatExchangers.Examples.WaterCooler_T (sim)	Compile → FrontEnd
IDEAS	IDEAS.Fluid.HeatExchangers.Examples.WaterHeater_T (sim)	Compile → FrontEnd
IDEAS	IDEAS.Fluid.HeatExchangers.Examples.WaterHeater_u (sim)	Compile → FrontEnd
IDEAS	IDEAS.Fluid.HeatPumps.Examples.HeatPump_WaterWater (sim)	Templates → FrontEnd
IDEAS	IDEAS.Fluid.HeatPumps.Examples.HeatPump_WaterWaterTSet (sim)	Compile → FrontEnd
IDEAS	IDEAS.Fluid.HeatPumps.Examples.HeatPump_perfFromTout (sim)	Templates → FrontEnd
IDEAS	IDEAS.Fluid.Humidifiers.Validation.SprayAirWasher_X (sim)	Compile → Simulate
IDEAS	IDEAS.Fluid.Humidifiers.Validation.SprayAirWasher_X_dynamic (sim)	Compile → Simulate
IDEAS	IDEAS.Fluid.Humidifiers.Validation.SteamHumidifier_X (sim)	Compile → Simulate
IDEAS	IDEAS.Fluid.Humidifiers.Validation.SteamHumidifier_X_dynamic (sim)	Compile → Simulate
IDEAS	IDEAS.Fluid.Interfaces.Examples.ReverseFlowMassExchanger (sim)	Compile → Simulate
IDEAS	IDEAS.Fluid.MixingVolumes.BaseClasses.Validation.MixingVolumeHeatPortWater (sim)	Compile → Simulate
IDEAS	IDEAS.Fluid.MixingVolumes.Validation.CoupledVolumesSpecializedAirPerfectGas (sim)	Compile → FrontEnd
IDEAS	IDEAS.Fluid.Movers.BaseClasses.Validation.FlowMachineInterface (sim)	Simulate → Compile
IDEAS	IDEAS.Fluid.Movers.Examples.ClosedLoop_y (sim)	Compile → FrontEnd
IDEAS	IDEAS.Fluid.Movers.Examples.MoverContinuous (sim)	Compile → FrontEnd
IDEAS	IDEAS.Fluid.Movers.Examples.MoverParameter (sim)	Compile → FrontEnd
IDEAS	IDEAS.Fluid.Movers.Examples.MoverStages (sim)	Compile → FrontEnd
IDEAS	IDEAS.Fluid.Movers.Examples.PumpExample (sim)	Compile → FrontEnd
IDEAS	IDEAS.Fluid.Movers.Examples.PumpWithPulseControl (sim)	Compile → FrontEnd
IDEAS	IDEAS.Fluid.Movers.Examples.SpeedControlled_y_pumpCurves (sim)	Compile → FrontEnd
IDEAS	IDEAS.Fluid.Movers.Validation.ControlledFlowMachine (sim)	Compile → FrontEnd
IDEAS	IDEAS.Fluid.Movers.Validation.ControlledFlowMachineDynamic (sim)	Compile → FrontEnd
IDEAS	IDEAS.Fluid.Movers.Validation.FlowControlled_dp (sim)	Templates → FrontEnd
IDEAS	IDEAS.Fluid.Movers.Validation.FlowControlled_dpSystem (sim)	Templates → FrontEnd
IDEAS	IDEAS.Fluid.Movers.Validation.FlowControlled_m_flow (sim)	Templates → FrontEnd
IDEAS	IDEAS.Fluid.Movers.Validation.PumpCurveConstruction (sim)	Compile → FrontEnd
IDEAS	IDEAS.Fluid.Movers.Validation.PumpCurveDerivatives (sim)	Templates → FrontEnd
IDEAS	IDEAS.Fluid.Movers.Validation.Pump_stratos (sim)	Templates → FrontEnd
IDEAS	IDEAS.Fluid.Movers.Validation.SpeedControlled_y (sim)	Templates → FrontEnd
IDEAS	IDEAS.Fluid.Sensors.Conversions.Examples.To_VolumeFraction (sim)	Compile → Simulate
IDEAS	IDEAS.Fluid.Sensors.Examples.Density (sim)	Compile → Simulate
IDEAS	IDEAS.Fluid.Sources.Examples.TraceSubstancesFlowSource (sim)	Compile → Simulate
IDEAS	IDEAS.Fluid.Storage.Validation.HeatExchangerLocation (sim)	Simulate performance 0.62 → 0:01:00
IDEAS	IDEAS.Fluid.Storage.Validation.StratifiedLoadingUnloading (sim)	Compile → Simulate
IDEAS	IDEAS.Fluid.Storage.Validation.StratifiedNonUniformInitial (sim)	Compile → Simulate
IDEAS	IDEAS.Fluid.Taps.Examples.DHW_example (sim)	Failed → Templates
IDEAS	IDEAS.ThermalZones.ReducedOrder.Validation.RoomSteadyState (sim)	Failed → FrontEnd
IDEAS	IDEAS.Utilities.Cryptographics.Validation.SHA1 (sim)	Templates → Simulate
IDEAS	IDEAS.Utilities.IO.Files.Examples.JSONWriter (sim)	Templates → Simulate
IDEAS	IDEAS.Utilities.Math.Functions.Examples.InverseXDerivative_2_Check (sim)	Failed → Simulate
IDEAS	IDEAS.Utilities.Math.Functions.Examples.InverseXRegularized (sim)	Templates → Simulate
IDEAS	IDEAS.Utilities.Math.Functions.Examples.QuinticHermite (sim)	Failed → Simulate
IDEAS	IDEAS.Utilities.Math.Functions.Examples.RegNonZeroPowerDerivative_2_Check (sim)	Failed → Simulate
IDEAS	IDEAS.Utilities.Math.Functions.Examples.SpliceFunctionDerivativeCheck (sim)	Failed → Templates