OpenModelica v1.27-cpp from 2026-08-03 09:52:14 to 2026-08-10 09:35:24

Summary

OMC Commits1
Libraries Changed14
Number of Improvements19
Number of Regressions18
Number of Performance Improvements4
Number of Performance Regressions11

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
BuildSysProConfiguration hash (OMC settings or the testing script changed)
Buildings_11From version 11.1.2-maint.11.x (https://github.com/lbl-srg/modelica-buildings/archive/df423074e48835df648a03866d9e703d4569114a.zip) to 11.1.2-maint.11.x (https://github.com/lbl-srg/modelica-buildings/archive/266c975c250742658e867a8187ae52786cf1faee.zip)
Buildings_12From version 12.1.2-maint.12.x (https://github.com/lbl-srg/modelica-buildings/archive/f04caa0b1ad7c9fb60746762ad73a96b9e67904a.zip) to 12.1.2-maint.12.x (https://github.com/lbl-srg/modelica-buildings/archive/4e96182ec2ce24ea97d8d5b345603ad26760fe60.zip)
Buildings_latestFrom version 14.0.0-master (https://github.com/lbl-srg/modelica-buildings/archive/2fc8e1e4c0c4995f1cee56bb378e24aafe799159.zip) to 14.0.0-master (https://github.com/lbl-srg/modelica-buildings/archive/280e075c0b1ca8d7004c3823c5a8835cb7f3e459.zip)
Dynawo_devConfiguration hash (OMC settings or the testing script changed)
IDEAS_devFrom version 4.0.0-master (5400f0d11564e9dced0330cd3b2c0f509ada6639) to 4.0.0-master (bd51e05f941c0db3690769703f3dd90b8fea5c93)
ModelicaTest_3.2.3Configuration hash (OMC settings or the testing script changed)
OpenIPSLConfiguration hash (OMC settings or the testing script changed)
OpenIPSL_devConfiguration hash (OMC settings or the testing script changed)
PowerGridsConfiguration hash (OMC settings or the testing script changed)
PowerGrids_symb_jacConfiguration hash (OMC settings or the testing script changed)
ScalableTestSuiteConfiguration hash (OMC settings or the testing script changed)
ScalableTestSuite_nooptConfiguration hash (OMC settings or the testing script changed)
ThermofluidStream_devFrom version 1.3.0-main (c1424a852b1b50dc44521e06f4994f3cfc2d9089) to 1.3.0-main (63cb8314a7c14f757154ff0626be07c04862f223)

Models Affected

BuildSysProBuildSysPro.IBPSA.Fluid.Examples.FlowSystem.Simplified6 (sim)Compile performance 31.09 → 0:01:00
BuildSysProBuildSysPro.IBPSA.Fluid.Movers.Validation.FlowControlled_dpSystem (sim)Compile performance 12.27 → 21.61
BuildSysProBuildSysPro.IBPSA.Fluid.Storage.Validation.HeatExchangerDynamics (sim)Compile performance 22.05 → 39.66
Buildings_11Buildings.Airflow.Multizone.Examples.PressurizationData (sim)Verify → Simulate
Buildings_11Buildings.Examples.SimpleHouse (sim)Verify → Simulate
Buildings_12Buildings.Airflow.Multizone.Examples.PressurizationData (sim)Verify → Simulate
Buildings_latestBuildings.Examples.DualFanDualDuct.ClosedLoop (sim)BackEnd performance 10.73 → 18.25 Templates performance 41.45 → 0:01:11
Buildings_latestBuildings.Fluid.DataCenterEquipment.Racks.Hybrid.LiquidCooledSinglePhase.Examples.LiquidCooledSinglePhase (sim)Simulate → Verify
Buildings_latestBuildings.Fluid.Geothermal.Borefields.BaseClasses.HeatTransfer.Validation.Measured_SmallScale (sim)Simulate → Compile
Dynawo_devDynawo.Examples.Photovoltaics.WECC.PVVoltageSource4 (sim)Simulate → Verify
Dynawo_devDynawo.Examples.Wind.WECC.WTG4ACurrentSource (sim)Simulate → Verify
IDEAS_devIDEAS.Fluid.Movers.Validation.Pump_stratos (sim)Compile performance 11.87 → 21.09
ModelicaTest_3.2.3ModelicaTest.Blocks.FilterTests.AllOptions (sim)Simulate performance 21.67 → 55.64
OpenIPSLOpenIPSL.Tests.Solar.PowerFactory.PVD1 (sim)Compile → Simulate
OpenIPSL_devOpenIPSL.Tests.Solar.PowerFactory.PVD1 (sim)Compile → Simulate
PowerGridsPowerGrids.Examples.Tutorial.IslandOperation.TwoGeneratorsFixedFrequencyReference (sim)Verify → Compile
PowerGridsPowerGrids.Examples.Tutorial.IslandOperation.TwoGeneratorsOneReferenceGenerator (sim)Simulate performance 43.97 → 8.89
PowerGrids_symb_jacPowerGrids.Examples.Tutorial.IslandOperation.TwoGeneratorsFixedFrequencyReference (sim)Verify → Compile
PowerGrids_symb_jacPowerGrids.Examples.Tutorial.IslandOperation.TwoGeneratorsOneReferenceGenerator (sim)Simulate performance 26.06 → 7.84
ScalableTestSuiteScalableTestSuite.Electrical.TransmissionLine.ScaledExperiments.TransmissionLineEquations_N_10 (sim)Simulate → Compile
ScalableTestSuiteScalableTestSuite.Electrical.TransmissionLine.ScaledExperiments.TransmissionLineEquations_N_1280 (sim)Simulate → Verify
ScalableTestSuiteScalableTestSuite.Electrical.TransmissionLine.ScaledExperiments.TransmissionLineEquations_N_160 (sim)Simulate → Verify
ScalableTestSuiteScalableTestSuite.Electrical.TransmissionLine.ScaledExperiments.TransmissionLineEquations_N_20 (sim)Simulate → Compile
ScalableTestSuiteScalableTestSuite.Electrical.TransmissionLine.ScaledExperiments.TransmissionLineEquations_N_320 (sim)Simulate → Verify
ScalableTestSuiteScalableTestSuite.Electrical.TransmissionLine.ScaledExperiments.TransmissionLineEquations_N_40 (sim)Simulate → Compile
ScalableTestSuiteScalableTestSuite.Electrical.TransmissionLine.ScaledExperiments.TransmissionLineEquations_N_640 (sim)Simulate → Verify
ScalableTestSuiteScalableTestSuite.Electrical.TransmissionLine.ScaledExperiments.TransmissionLineEquations_N_80 (sim)Simulate → Verify
ScalableTestSuiteScalableTestSuite.Elementary.SimpleODE.ScaledExperiments.CascadedFirstOrder_N_3200 (sim)Simulate performance 22.89 → 39.86
ScalableTestSuiteScalableTestSuite.Thermal.Advection.ScaledExperiments.AdvectionReaction_N_1600 (sim)Simulate performance 25.82 → 11.20
ScalableTestSuiteScalableTestSuite.Thermal.Advection.ScaledExperiments.AdvectionReaction_N_3200 (sim)Compile → Simulate
ScalableTestSuiteScalableTestSuite.Thermal.Advection.ScaledExperiments.SimpleAdvection_N_1600 (sim)Simulate → Verify
ScalableTestSuiteScalableTestSuite.Thermal.Advection.ScaledExperiments.SimpleAdvection_N_3200 (sim)Verify → Simulate
ScalableTestSuiteScalableTestSuite.Thermal.Advection.ScaledExperiments.SimpleAdvection_N_6400 (sim)Simulate performance 0:02:20 → 0:04:30
ScalableTestSuiteScalableTestSuite.Thermal.DistrictHeating.ScaledExperiments.HeatingSystem_N_40 (sim)Verify → Simulate
ScalableTestSuite_nooptScalableTestSuite.Electrical.DistributionSystemDC.ScaledExperiments.DistributionSystemModelicaActiveLoads_N_320_M_5 (sim)Verify → Templates
ScalableTestSuite_nooptScalableTestSuite.Electrical.DistributionSystemDC.ScaledExperiments.DistributionSystemModelica_N_80_M_80 (sim)BackEnd performance 0:02:10 → 0:03:42
ScalableTestSuite_nooptScalableTestSuite.Electrical.TransmissionLine.ScaledExperiments.TransmissionLineEquations_N_10 (sim)Simulate → Compile
ScalableTestSuite_nooptScalableTestSuite.Electrical.TransmissionLine.ScaledExperiments.TransmissionLineEquations_N_1280 (sim)Simulate → Compile
ScalableTestSuite_nooptScalableTestSuite.Electrical.TransmissionLine.ScaledExperiments.TransmissionLineEquations_N_160 (sim)Simulate → Verify
ScalableTestSuite_nooptScalableTestSuite.Electrical.TransmissionLine.ScaledExperiments.TransmissionLineEquations_N_20 (sim)Simulate → Compile
ScalableTestSuite_nooptScalableTestSuite.Electrical.TransmissionLine.ScaledExperiments.TransmissionLineEquations_N_320 (sim)Simulate → Verify
ScalableTestSuite_nooptScalableTestSuite.Electrical.TransmissionLine.ScaledExperiments.TransmissionLineEquations_N_40 (sim)Simulate → Compile
ScalableTestSuite_nooptScalableTestSuite.Electrical.TransmissionLine.ScaledExperiments.TransmissionLineEquations_N_640 (sim)Simulate → Verify
ScalableTestSuite_nooptScalableTestSuite.Electrical.TransmissionLine.ScaledExperiments.TransmissionLineEquations_N_80 (sim)Simulate → Verify
ScalableTestSuite_nooptScalableTestSuite.Power.ConceptualPowerSystem.ScaledExperiments.PowerSystemStepLoad_N_64_M_16 (sim)Simulate performance 5.49 → 13.99
ScalableTestSuite_nooptScalableTestSuite.Thermal.Advection.ScaledExperiments.AdvectionReaction_N_1600 (sim)Simulate performance 32.09 → 11.71
ScalableTestSuite_nooptScalableTestSuite.Thermal.Advection.ScaledExperiments.AdvectionReaction_N_3200 (sim)Compile → Simulate
ScalableTestSuite_nooptScalableTestSuite.Thermal.Advection.ScaledExperiments.SimpleAdvection_N_1600 (sim)Simulate → Verify
ScalableTestSuite_nooptScalableTestSuite.Thermal.Advection.ScaledExperiments.SimpleAdvection_N_3200 (sim)Verify → Simulate
ScalableTestSuite_nooptScalableTestSuite.Thermal.Advection.ScaledExperiments.SimpleAdvection_N_6400 (sim)Simulate performance 0:02:34 → 0:04:48
ScalableTestSuite_nooptScalableTestSuite.Thermal.DistrictHeating.ScaledExperiments.HeatingSystem_N_40 (sim)Verify → Simulate
ThermofluidStream_devThermofluidStream.FlowControl.Tests.ThreeWayValve (sim)Simulate → Verify