OpenModelica v1.27-fmi-fmpy from 2026-08-02 12:33:12 to 2026-08-09 08:14:02

Summary

OMC Commits1
Libraries Changed5
Number of Improvements5
Number of Regressions2
Number of Performance Improvements10
Number of Performance Regressions7

OpenModelica Changes

CommitDateAuthorSummary
a0783c033a2026-08-04 16:34:44 +0200Adeel AsgharExtra corner items not needed when creating a connector (#16184) (#16185)

OpenModelicaLibraryTesting Changes

CommitDateAuthorSummary
f0529402026-08-07 08:03:04 +0200Martin SjölundApply __OpenModelica_simulationFlags to wasm-jit
65f890e2026-08-07 07:57:06 +0200Martin SjölundApply -alarm to wasm-jit simulations too

Library Changes

LibraryChange
Buildings_11From version 11.1.2-maint.11.x (https://github.com/lbl-srg/modelica-buildings/archive/df423074e48835df648a03866d9e703d4569114a.zip) FMPy version 0.3.29 to 11.1.2-maint.11.x (https://github.com/lbl-srg/modelica-buildings/archive/266c975c250742658e867a8187ae52786cf1faee.zip) FMPy version 0.3.29
Buildings_12From version 12.1.2-maint.12.x (https://github.com/lbl-srg/modelica-buildings/archive/f04caa0b1ad7c9fb60746762ad73a96b9e67904a.zip) FMPy version 0.3.29 to 12.1.2-maint.12.x (https://github.com/lbl-srg/modelica-buildings/archive/4e96182ec2ce24ea97d8d5b345603ad26760fe60.zip) FMPy version 0.3.29
Buildings_latestFrom version 14.0.0-master (https://github.com/lbl-srg/modelica-buildings/archive/2fc8e1e4c0c4995f1cee56bb378e24aafe799159.zip) FMPy version 0.3.29 to 14.0.0-master (https://github.com/lbl-srg/modelica-buildings/archive/280e075c0b1ca8d7004c3823c5a8835cb7f3e459.zip) FMPy version 0.3.29
IBPSA_latestFrom version 4.0.0-master (e90320781489baa9e0dfddcf5f2a917396cf3ad5) FMPy version 0.3.29 to 4.0.0-master (cb0ec240bcd1bdff445ad10f79aa1fb2fe8c159a) FMPy version 0.3.29
ThermofluidStream_devFrom version 1.3.0-main (c1424a852b1b50dc44521e06f4994f3cfc2d9089) FMPy version 0.3.29 to 1.3.0-main (63cb8314a7c14f757154ff0626be07c04862f223) FMPy version 0.3.29

Models Affected

AixLibAixLib.ThermalZones.HighOrder.Examples.OFD_1Jan (sim)SimCode performance 0:01:32 → 34.40
Buildings_11Buildings.Air.Systems.SingleZone.VAV.Examples.ChillerDXHeatingEconomizer (sim)SimCode performance 13.11 → 5.93
Buildings_11Buildings.DHC.ETS.Combined.Examples.ChillerBorefield (sim)SimCode performance 15.89 → 31.10
Buildings_11Buildings.Fluid.Geothermal.Borefields.Validation.ConstantHeatInjection_100Boreholes (sim)SimCode performance 16.01 → 8.15
Buildings_11Buildings.ThermalZones.Detailed.Examples.MixedAirFreeResponse (sim)SimCode performance 31.23 → 18.27
Buildings_12Buildings.DHC.ETS.Combined.Validation.ChillerBorefield (sim)SimCode performance 30.73 → 10.33
Buildings_12Buildings.DHC.Plants.Combined.Validation.AllElectricCWStorage (sim)Failed → Compile
Buildings_12Buildings.Fluid.Geothermal.Borefields.Validation.ConstantHeatInjection_100Boreholes (sim)SimCode performance 11.54 → 19.68
Buildings_12Buildings.ThermalZones.Detailed.Examples.FFD.Tutorial.MixedConvection (sim)Simulate performance 0:07:02 → 1.29
Buildings_latestBuildings.DHC.Loads.BaseClasses.Examples.CouplingRCZ6 (sim)Failed → Verify
Buildings_latestBuildings.Fluid.Geothermal.Borefields.Examples.Borefields (sim)Verify → Failed
IBPSA_latestIBPSA.Fluid.Geothermal.Borefields.Validation.ConstantHeatInjection_100Boreholes (sim)SimCode performance 8.26 → 22.54
IDEASIDEAS.Fluid.Geothermal.Borefields.Validation.ConstantHeatInjection_100Boreholes (sim)SimCode performance 8.14 → 15.72
OpenIPSL_devOpenIPSL.Examples.TwoAreas.Two_Areas_PSAT (sim)Simulate performance 2.94 → 10.00
SOFCPoliMiSOFCPoliMi.Tests.BenchmarkCammarata (sim)SimCode performance 34.66 → 16.33
SOFCPoliMiSOFCPoliMi.Tests.BenchmarkNonLinConcLosses (sim)Failed → Compile
ScalableTestSuiteScalableTestSuite.Electrical.DistributionSystemAC.ScaledExperiments.DistributionSystemLinearIndividual_N_20_M_20 (sim)Compile performance 0:04:26 → 0:02:10
ScalableTestSuiteScalableTestSuite.Electrical.DistributionSystemDC.ScaledExperiments.DistributionSystemModelicaActiveLoads_N_28_M_28 (sim)Verify → Failed
ScalableTestSuiteScalableTestSuite.Thermal.Advection.ScaledExperiments.SteamPipe_N_320 (sim)Compile performance 0:01:46 → 0:03:56
ScalableTestSuiteScalableTestSuite.Thermal.DistrictHeating.ScaledExperiments.HeatingSystem_N_640 (sim)Compile performance 0:01:22 → 46.55
ScalableTestSuite_nooptScalableTestSuite.Electrical.DistributionSystemDC.ScaledExperiments.DistributionSystemModelicaActiveLoads_N_56_M_56 (sim)Simulate performance 10.75 → 5.42
ScalableTestSuite_nooptScalableTestSuite.Electrical.DistributionSystemDC.ScaledExperiments.DistributionSystemModelica_N_112_M_112 (sim)Failed → Verify
ScalableTestSuite_nooptScalableTestSuite.Electrical.DistributionSystemDC.ScaledExperiments.DistributionSystemModelica_N_80_M_80 (sim)Simulate performance 6.43 → 13.42
ThermofluidStream_devThermofluidStream.FlowControl.Tests.ThreeWayValve (sim)Simulate → Verify