OpenModelica v1.26-fmi from 2026-05-03 02:06:18 to 2026-05-09 16:18:30

Summary

OMC Commits1
Libraries Changed3
Number of Improvements13
Number of Regressions15
Number of Performance Improvements3
Number of Performance Regressions4

OpenModelica Changes

CommitDateAuthorSummary
2b913cc6c42026-05-03 15:00:05 +0200Adrian Popinclude the version in the file name (#15479)

OpenModelicaLibraryTesting Changes

CommitDateAuthorSummary
1dd4db72026-04-19 14:25:16 +0200Adrian Popforce fetch of tags to handle the floating tag 'nightly' (#285)
e83c3f42026-04-14 08:15:53 +0200Adrian Popcannot run python -m fmpy via check_output_log (#284)

Library Changes

LibraryChange
Buildings_11From version 11.1.1-maint.11.x (https://github.com/lbl-srg/modelica-buildings/archive/c819a94c6d52b58d3cba23caa8cb871f1e97d2fd.zip) warning: Failed to load settings: [json.exception.parse_error.101] parse error at line 3, column 2: syntax error while parsing value - invalid literal; last read: '"temp_AixLib_AixLib_Fluid_HeatPumps_Validation_ReciprocatingWaterToWater_Static_fmu"}_'; expected end of input OMSimulator v3.0.0.post138-g52bff9c-linux-debug info: 1 warnings info: 0 errors to 11.1.2-maint.11.x (https://github.com/lbl-srg/modelica-buildings/archive/a0f19b2b62c22fef3c4a583df65c2f7cd81bd8d2.zip) warning: Failed to load settings: [json.exception.parse_error.101] parse error at line 3, column 2: syntax error while parsing value - invalid literal; last read: '"temp_AixLib_AixLib_Fluid_HeatPumps_Validation_ReciprocatingWaterToWater_Static_fmu"}_'; expected end of input OMSimulator v3.0.0.post138-g52bff9c-linux-debug info: 1 warnings info: 0 errors
Buildings_latestFrom version 13.0.0-master (https://github.com/lbl-srg/modelica-buildings/archive/0d7cf53f81085ebd20a71b8cc29e366c236c6808.zip) warning: Failed to load settings: [json.exception.parse_error.101] parse error at line 3, column 2: syntax error while parsing value - invalid literal; last read: '"temp_AixLib_AixLib_Fluid_HeatPumps_Validation_ReciprocatingWaterToWater_Static_fmu"}_'; expected end of input OMSimulator v3.0.0.post138-g52bff9c-linux-debug info: 1 warnings info: 0 errors to 13.0.1-master (https://github.com/lbl-srg/modelica-buildings/archive/6e0f19a25b5b4f8dfb620d8c68d10b537dfdec2d.zip) warning: Failed to load settings: [json.exception.parse_error.101] parse error at line 3, column 2: syntax error while parsing value - invalid literal; last read: '"temp_AixLib_AixLib_Fluid_HeatPumps_Validation_ReciprocatingWaterToWater_Static_fmu"}_'; expected end of input OMSimulator v3.0.0.post138-g52bff9c-linux-debug info: 1 warnings info: 0 errors
Dynawo_devFrom version 1.8.0-master (8ae1ea8b85b5a2a2d212ba4371862ecaa49a41d1) warning: Failed to load settings: [json.exception.parse_error.101] parse error at line 3, column 2: syntax error while parsing value - invalid literal; last read: '"temp_AixLib_AixLib_Fluid_HeatPumps_Validation_ReciprocatingWaterToWater_Static_fmu"}_'; expected end of input OMSimulator v3.0.0.post138-g52bff9c-linux-debug info: 1 warnings info: 0 errors to 1.8.0-master (967a657a3562291295185ea055977ebae8ca6ea5) warning: Failed to load settings: [json.exception.parse_error.101] parse error at line 3, column 2: syntax error while parsing value - invalid literal; last read: '"temp_AixLib_AixLib_Fluid_HeatPumps_Validation_ReciprocatingWaterToWater_Static_fmu"}_'; expected end of input OMSimulator v3.0.0.post138-g52bff9c-linux-debug info: 1 warnings info: 0 errors

Models Affected

AixLibAixLib.Systems.ModularAHU.Examples.EONERC_AHU2 (sim)BackEnd performance 10.11 → 4.57
AixLibAixLib.ThermalZones.HighOrder.Validation.ASHRAE140.Case320 (sim)Compile → Simulate
Buildings_11Buildings.ThermalZones.Detailed.Examples.FFD.Tutorial.MixedConvection (sim)Simulate performance 1.45 → 0:07:02
Buildings_latestBuildings.Air.Systems.SingleZone.VAV.Examples.Guideline36 (sim)Verify → Simulate
Buildings_latestBuildings.Airflow.Multizone.Examples.PressurizationData (sim)Compile → Simulate
Buildings_latestBuildings.Controls.Predictors.Examples.BESTEST (sim)Compile → Simulate
Buildings_latestBuildings.Electrical.AC.OnePhase.Sources.Examples.WindTurbine (sim)Verify → Simulate
Buildings_latestBuildings.Electrical.AC.ThreePhasesBalanced.Sources.Examples.WindTurbine (sim)Verify → Simulate
Buildings_latestBuildings.Fluid.HeatExchangers.CoolingTowers.Examples.DryCooler (sim)Simulate → Verify
Buildings_latestBuildings.Fluid.HeatExchangers.CoolingTowers.Examples.Merkel (sim)Simulate → Verify
Buildings_latestBuildings.Fluid.HeatExchangers.CoolingTowers.Examples.YorkCalc (sim)Simulate → Verify
Buildings_latestBuildings.Fluid.Sources.Examples.Outside_CpData (sim)Verify → Simulate
Buildings_latestBuildings.Fluid.Sources.Examples.Outside_CpData_Angles (sim)Verify → Simulate
Buildings_latestBuildings.Fluid.Sources.Examples.Outside_CpLowRise (sim)Verify → Simulate
Buildings_latestBuildings.Media.Antifreeze.Functions.Validation.EthyleneGlycolWater (sim)Simulate → Verify
Buildings_latestBuildings.Media.Antifreeze.Functions.Validation.PropyleneGlycolWater (sim)Simulate → Verify
Buildings_latestBuildings.ThermalZones.Detailed.Validation.BESTEST.Cases6xx.Case600 (sim)Simulate → Compile
Buildings_latestBuildings.ThermalZones.Detailed.Validation.BESTEST.Cases6xx.Case610 (sim)Compile → Simulate
Buildings_latestBuildings.ThermalZones.Detailed.Validation.BESTEST.Cases6xx.Case630 (sim)Compile → Simulate
Buildings_latestBuildings.ThermalZones.Detailed.Validation.BESTEST.Cases6xx.Case650 (sim)Simulate → Compile
Buildings_latestBuildings.ThermalZones.Detailed.Validation.BESTEST.Cases6xx.Case660 (sim)Simulate → Compile
Buildings_latestBuildings.ThermalZones.Detailed.Validation.BESTEST.Cases9xx.Case900 (sim)Simulate performance 4.94 → 10.59
Buildings_latestBuildings.ThermalZones.Detailed.Validation.BESTEST.Cases9xx.Case910 (sim)Simulate → Compile
Buildings_latestBuildings.ThermalZones.Detailed.Validation.BESTEST.Cases9xx.Case940 (sim)Simulate → Compile
Buildings_latestBuildings.ThermalZones.Detailed.Validation.BESTEST.Cases9xx.Case950 (sim)Simulate → Compile
Buildings_latestBuildings.ThermalZones.Detailed.Validation.BESTEST.Cases9xx.Case960 (sim)Compile → Simulate
Buildings_latestBuildings.ThermalZones.Detailed.Validation.BESTEST.Cases9xx.Case980 (sim)Simulate → Compile
Buildings_latestBuildings.ThermalZones.Detailed.Validation.BESTEST.Cases9xx.Case985 (sim)Simulate performance 45.21 → 4.40
Buildings_latestBuildings.ThermalZones.Detailed.Validation.BESTEST.Cases9xx.Case995 (sim)Simulate → Compile
Dynawo_devDynawo.Examples.Wind.WECC.WTG4ACurrentSource2 (sim)Simulate performance 1.17 → 10.86
ScalableTestGrids_nooptScalableTestGrids.Models.Type2.Type2_tapNoEv_N_4_M_4 (sim)
ScalableTestSuiteScalableTestSuite.Electrical.DistributionSystemAC.ScaledExperiments.DistributionSystemLinearIndividual_N_28_M_28 (sim)BackEnd performance 22.89 → 11.38
ScalableTestSuiteScalableTestSuite.Elementary.Tables.ScaledExperiments.CombiTimeTable_N_8000 (sim)Failed → Simulate
ScalableTestSuiteScalableTestSuite.Power.ConceptualPowerSystem.ScaledExperiments.PowerSystemStepLoad_N_64_M_4 (sim)Verify → Failed
ScalableTestSuite_nooptScalableTestSuite.Electrical.DistributionSystemDC.ScaledExperiments.DistributionSystemModelica_N_112_M_112 (sim)Failed → Verify
ScalableTestSuite_nooptScalableTestSuite.Elementary.WhenEvents.ScaledExperiments.ManyEvents_N_8000_M_10 (sim)SimCode performance 0:01:00 → 0:02:02