OpenModelica v1.27-cpp from 2026-06-22 05:17:59 to 2026-06-29 09:56:24

Summary

OMC Commits8
Libraries Changed5
Number of Improvements47
Number of Regressions7
Number of Performance Improvements4
Number of Performance Regressions2

OpenModelica Changes

CommitDateAuthorSummary
8c6250a0892026-06-27 01:25:43 +0300Adrian PopMore fixes from master in v1.27 (#15943)
a13c1396ff2026-06-26 13:15:49 +0300Adrian Popdoc: fix unset HOME and missing systemoverview.png in UsersGuide build (#15920) (#15923)
9d56c026d22026-06-25 14:07:13 +0300Adrian PopPort to mainteance127 20260625 (#15918)
edf10ac4252026-06-23 11:33:10 +0200Per ÖstlundFix test case name
08a8f5dabc2026-06-22 13:13:26 +0200Per ÖstlundIgnore base classes when dumping type paths to JSON
456593519c2026-06-11 12:12:33 +0200Per ÖstlundOptimize UnorderedSet
d05c16b2422026-06-22 22:52:27 +0200Adeel AsgharFixes 1.27 (#15895)
809e1dcf802026-06-22 18:05:26 +0200Adeel AsgharAllow FMU export of models when ecnrypted models/libraries are loaded (#15852) (#15892)

OpenModelicaLibraryTesting Changes

CommitDateAuthorSummary
d357aff2026-06-12 13:26:07 +0200AndreasFix OMSimulator submodule update when directory layout changes (#287)
12a01782026-06-06 12:43:09 +0200Adrian Popdrop v1.25 and add v1.27 (#286)

Library Changes

LibraryChange
AixLibFrom version 3.0.0 (https://github.com/RWTH-EBC/AixLib/archive/e716783b07f1bee5a4e45de1bcc1575576d7c974.zip) to 3.0.1 (https://github.com/RWTH-EBC/AixLib/archive/e5df9a8da27833ee391c2f7a0adbcd80278f47d2.zip)
Buildings_latestFrom version 13.0.1-master (https://github.com/lbl-srg/modelica-buildings/archive/8754785d1d873f7e49578c4368587dfb0e6e4300.zip) to 14.0.0-master (https://github.com/lbl-srg/modelica-buildings/archive/a131864e4c4df22ebcd52bb8da439de0087ac365.zip)
IBPSA_latestFrom version 4.0.0-master (18cb5d00dd8ff168d7aa56c19cb0b9b30dd513ed) to 4.0.0-master (6eb7429932e49faba297aee9e36c2c057fb21fb6)
ThermofluidStreamConfiguration hash (OMC settings or the testing script changed)
ThermofluidStream_devConfiguration hash (OMC settings or the testing script changed)

Models Affected

AixLibAixLib.Controls.HVACAgentBasedControl.Examples.BuildingHeatingSystems.BuildingHeating (sim)Failed → Templates
AixLibAixLib.Controls.HVACAgentBasedControl.Examples.BuildingHeatingSystems.BuildingHeating_usePoke (sim)Failed → Templates
AixLibAixLib.Controls.HVACAgentBasedControl.Examples.BuildingHeatingSystems.BuildingWithPV (sim)Failed → Templates
AixLibAixLib.Systems.ModularAHU.Examples.DemandControlledAHU (sim)Failed → Templates
AixLibAixLib.ThermalZones.HighOrder.Components.Examples.Walls.OutsideWall (sim)Failed → Simulate
AixLibAixLib.ThermalZones.HighOrder.Components.Examples.WindowsDoors.WindowSimple (sim)Failed → Simulate
AixLibAixLib.ThermalZones.HighOrder.Components.Shadow.Examples.ShadowEffectTest (sim)Failed → Simulate
AixLibAixLib.ThermalZones.HighOrder.Examples.ASHREA140.CompareDynamicAndStaticSolarFrac_Case270 (sim)Failed → Simulate
AixLibAixLib.ThermalZones.HighOrder.Examples.OFDHeatLoad (sim)Failed → Simulate
AixLibAixLib.ThermalZones.HighOrder.Validation.ASHRAE140.Case210 (sim)Failed → Compile
AixLibAixLib.ThermalZones.HighOrder.Validation.ASHRAE140.Case220 (sim)Failed → Compile
AixLibAixLib.ThermalZones.HighOrder.Validation.ASHRAE140.Case230 (sim)Failed → Compile
AixLibAixLib.ThermalZones.HighOrder.Validation.ASHRAE140.Case240 (sim)Failed → Compile
AixLibAixLib.ThermalZones.HighOrder.Validation.ASHRAE140.Case250 (sim)Failed → Compile
AixLibAixLib.ThermalZones.HighOrder.Validation.ASHRAE140.Case270 (sim)Failed → Simulate
AixLibAixLib.ThermalZones.HighOrder.Validation.ASHRAE140.Case280 (sim)Failed → Simulate
AixLibAixLib.ThermalZones.HighOrder.Validation.ASHRAE140.Case300 (sim)Failed → Simulate
AixLibAixLib.ThermalZones.HighOrder.Validation.ASHRAE140.Case320 (sim)Failed → Simulate
AixLibAixLib.ThermalZones.HighOrder.Validation.ASHRAE140.Case395 (sim)Failed → Compile
AixLibAixLib.ThermalZones.HighOrder.Validation.ASHRAE140.Case400 (sim)Failed → Compile
AixLibAixLib.ThermalZones.HighOrder.Validation.ASHRAE140.Case410 (sim)Failed → Compile
AixLibAixLib.ThermalZones.HighOrder.Validation.ASHRAE140.Case420 (sim)Failed → Compile
AixLibAixLib.ThermalZones.HighOrder.Validation.ASHRAE140.Case430 (sim)Failed → Compile
AixLibAixLib.ThermalZones.HighOrder.Validation.ASHRAE140.Case440 (sim)Failed → Simulate
AixLibAixLib.ThermalZones.HighOrder.Validation.ASHRAE140.Case600 (sim)Failed → Compile
AixLibAixLib.ThermalZones.HighOrder.Validation.ASHRAE140.Case620 (sim)Failed → Simulate
AixLibAixLib.ThermalZones.HighOrder.Validation.ASHRAE140.Case640 (sim)Failed → Compile
AixLibAixLib.ThermalZones.HighOrder.Validation.ASHRAE140.Case650 (sim)Failed → Compile
AixLibAixLib.ThermalZones.HighOrder.Validation.ASHRAE140.Case800 (sim)Failed → Compile
AixLibAixLib.ThermalZones.HighOrder.Validation.ASHRAE140.Case810 (sim)Failed → Simulate
AixLibAixLib.ThermalZones.HighOrder.Validation.ASHRAE140.Case900 (sim)Failed → Compile
AixLibAixLib.ThermalZones.HighOrder.Validation.ASHRAE140.Case920 (sim)Failed → Simulate
AixLibAixLib.ThermalZones.HighOrder.Validation.ASHRAE140.Case940 (sim)Failed → Compile
AixLibAixLib.ThermalZones.HighOrder.Validation.ASHRAE140.Case950 (sim)Failed → Compile
AixLibAixLib.ThermalZones.HighOrder.Validation.EmpiricalValidation.Warehouse (sim)Failed → Templates
AixLibAixLib.ThermalZones.ReducedOrder.Examples.ComparisonThermalZoneMoistAndDryAir (sim)Failed → Compile
AixLibAixLib.ThermalZones.ReducedOrder.Examples.Multizone (sim)Failed → Compile
AixLibAixLib.ThermalZones.ReducedOrder.Examples.MultizoneInterzonalsFixedHeater (sim)Failed → Templates
AixLibAixLib.ThermalZones.ReducedOrder.Examples.MultizoneMoistAirCO2 (sim)Failed → Compile
AixLibAixLib.ThermalZones.ReducedOrder.Examples.MultizonePartlyCooled (sim)Failed → Compile
AixLibAixLib.ThermalZones.ReducedOrder.Examples.ThermalZone (sim)Failed → Compile
AixLibAixLib.ThermalZones.ReducedOrder.Examples.ThermalZoneAirExchange (sim)Failed → Compile
AixLibAixLib.ThermalZones.ReducedOrder.Examples.ThermalZoneMoistAir (sim)Failed → Compile
AixLibAixLib.ThermalZones.ReducedOrder.Examples.ThermalZoneMoistAirSwimmingPool (sim)Failed → Compile
AixLibAixLib.ThermalZones.ReducedOrder.Examples.ThermalZoneMoistCO2AirExchange (sim)Failed → Compile
BuildSysProBuildSysPro.Systems.HVAC.Production.HeatPump.FixedSpeed.Examples.MozartMultizoneHeatingSystem (sim)Compile performance 0:02:15 → 0:01:19
Buildings_latestBuildings.Fluid.HeatExchangers.CoolingTowers.Examples.DryCooler (sim)Verify → Simulate
IBPSA_latestIBPSA.Fluid.SolarCollectors.Examples.FlatPlateTotalArea (sim)Compile performance 41.84 → 24.46
ScalableTestSuiteScalableTestSuite.Electrical.DistributionSystemDC.ScaledExperiments.DistributionSystemModelica_N_56_M_56 (sim)Verify → Templates
ScalableTestSuiteScalableTestSuite.Electrical.TransmissionLine.ScaledExperiments.TransmissionLineModelica_N_160 (sim)Compile performance 24.17 → 13.23
ScalableTestSuiteScalableTestSuite.Elementary.Tables.ScaledExperiments.TimeTable_N_16000 (sim)Failed → Verify
ScalableTestSuiteScalableTestSuite.Elementary.WhenEvents.ScaledExperiments.ManyEvents_N_8000_M_10 (sim)SimCode performance 0:02:48 → 0:01:33
ScalableTestSuiteScalableTestSuite.Power.ConceptualPowerSystem.ScaledExperiments.PowerSystemStepLoad_N_64_M_16 (sim)Simulate performance 5.54 → 12.28
ScalableTestSuiteScalableTestSuite.Thermal.Advection.ScaledExperiments.SteamPipe_N_640 (sim)Failed → Simulate
ScalableTestSuite_nooptScalableTestSuite.Electrical.DistributionSystemDC.ScaledExperiments.DistributionSystemModelicaActiveLoads_N_320_M_5 (sim)Verify → Templates
ScalableTestSuite_nooptScalableTestSuite.Elementary.WhenEvents.ScaledExperiments.ManyEvents_N_8000_M_10 (sim)SimCode performance 0:01:00 → 0:02:22
ThermofluidStreamThermofluidStream.Media.additionalMedia.Incompressible.TestDowcal100 (sim)Verify → Compile
ThermofluidStreamThermofluidStream.Media.additionalMedia.Incompressible.TestDowcal100E (sim)Verify → Compile
ThermofluidStream_devThermofluidStream.Media.additionalMedia.Incompressible.TestDowcal100 (sim)Verify → Compile
ThermofluidStream_devThermofluidStream.Media.additionalMedia.Incompressible.TestDowcal100E (sim)Verify → Compile