OpenModelica v1.26-fmi-fmpy from 2026-05-03 13:03:49 to 2026-05-10 02:26:33

Summary

OMC Commits1
Libraries Changed3
Number of Improvements5
Number of Regressions11
Number of Performance Improvements5
Number of Performance Regressions2

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/16657dbfcd789e924daab8027b423f5abeeb00e2.zip) FMPy version 0.3.29 to 11.1.2-maint.11.x (https://github.com/lbl-srg/modelica-buildings/archive/a0f19b2b62c22fef3c4a583df65c2f7cd81bd8d2.zip) FMPy version 0.3.29
Buildings_latestFrom version 13.0.0-master (https://github.com/lbl-srg/modelica-buildings/archive/bf456b3a4a2e5ec26a38913aef7390afd62fa686.zip) FMPy version 0.3.29 to 13.0.1-master (https://github.com/lbl-srg/modelica-buildings/archive/6e0f19a25b5b4f8dfb620d8c68d10b537dfdec2d.zip) FMPy version 0.3.29
EHPTlib_latestFrom version 3.0.0-main (05e3044b1fb73c142f436599a1e0643f779352a2) FMPy version 0.3.29 to 3.0.0-main (8dc034db0ec7d8558f84318d82f9c358ed524635) FMPy version 0.3.29

Models Affected

Buildings_11Buildings.ThermalZones.Detailed.Examples.FFD.Tutorial.MixedConvection (sim)Simulate performance 0:07:02 → 1.24
Buildings_latestBuildings.Examples.ScalableBenchmarks.BuildingVAV.Examples.TwoFloor_TwoZone (sim)Compile → Failed
Buildings_latestBuildings.Examples.VAVReheat.ASHRAE2006 (sim)Failed → Compile
Buildings_latestBuildings.Media.Antifreeze.Functions.Validation.EthyleneGlycolWater (sim)Simulate → Verify
Buildings_latestBuildings.Media.Antifreeze.Functions.Validation.PropyleneGlycolWater (sim)Simulate → Verify
Buildings_latestBuildings.ThermalZones.Detailed.Examples.FFD.Tutorial.MixedConvection (sim)Simulate performance 1.21 → 0:14:02
EHPTlib_latestEHPTlib.MapBased.TestingModels.TestGensets.TestGenset1 (sim)Simulate → Failed
EHPTlib_latestEHPTlib.MapBased.TestingModels.TestGensets.TestGenset2 (sim)Simulate → Failed
EHPTlib_latestEHPTlib.MapBased.TestingModels.TestGensets.TestGensetOO (sim)Simulate → Failed
EHPTlib_latestEHPTlib.MapBased.TestingModels.TestLimTorque (sim)Simulate → Failed
EHPTlib_latestEHPTlib.MapBased.TestingModels.TestOneFlange.TestOneFlange1 (sim)Compile → Failed
EHPTlib_latestEHPTlib.MapBased.TestingModels.TestOneFlange.TestOneFlange1Conn (sim)Compile → Failed
EHPTlib_latestEHPTlib.MapBased.TestingModels.TestOneFlange.TestOneFlange2 (sim)Compile → Failed
EHPTlib_latestEHPTlib.MapBased.TestingModels.TestOneFlange.TestOneFlange3 (sim)Compile → Failed
EHPTlib_latestEHPTlib.MapBased.TestingModels.TestOneFlange.TestOneFlange4 (sim)Compile → Failed
Modelica_4.0.0Modelica.Blocks.Examples.Rectifier12pulseFFT (sim)BackEnd performance 20.25 → 11.39
Modelica_4.0.0Modelica.Blocks.Examples.Rectifier6pulseFFT (sim)BackEnd performance 20.25 → 11.38
ScalableTestGrids_nooptScalableTestGrids.Models.Type2.Type2_tapNoEv_N_4_M_4 (sim)
ScalableTestSuiteScalableTestSuite.Elementary.Tables.ScaledExperiments.CombiTimeTable_N_8000 (sim)Failed → Verify
ScalableTestSuiteScalableTestSuite.Power.ConceptualPowerSystem.ScaledExperiments.PowerSystemStepLoad_N_64_M_8 (sim)Verify → Failed
ScalableTestSuiteScalableTestSuite.Thermal.HeatExchanger.ScaledExperiments.CounterCurrentHeatExchangerEquations_N_1280 (sim)Compile → Verify
ScalableTestSuite_nooptScalableTestSuite.Electrical.DistributionSystemDC.ScaledExperiments.DistributionSystemModelicaIndividual_N_80_M_80 (sim)Simulate performance 10.88 → 5.57
ScalableTestSuite_nooptScalableTestSuite.Elementary.SimpleODE.ScaledExperiments.CascadedFirstOrder_N_25600 (sim)Simulate performance 13.46 → 38.55
StewartPlatformStewartPlatform.Scenarios.StewartPlatform_InverseDynamic1_noBus (sim)Compile performance 0:03:24 → 0:02:00