OpenModelica cpp from 2026-08-03 16:10:42 to 2026-08-03 22:22:32

Summary

OMC Commits3
Libraries Changed2
Number of Improvements2
Number of Regressions2
Number of Performance Improvements4
Number of Performance Regressions2

OpenModelica Changes

CommitDateAuthorSummary
ebdd3203f22026-08-03 20:23:42 +0200Martin SjölundNumerical Jacobian: nominal step below atol only (#16176)
f3478a7f4a2026-08-03 20:06:38 +0200cbermperi[NB] Implement cyclic alias set resolution using Bareiss elimination (#15796)
3f2692fe7f2026-08-03 17:36:43 +0200Martin Sjölundwasm-jit: the gbode and rungekutta solvers (#16180)

OpenModelicaLibraryTesting Changes

CommitDateAuthorSummary
6697fc02026-07-06 18:25:17 +0200linuslangenkamp[GBODE] set Radau IIA 3-stage, remove embedded error estimate (#288)
d357aff2026-06-12 13:26:07 +0200AndreasFix OMSimulator submodule update when directory layout changes (#287)

Library Changes

LibraryChange
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/927a6b461a7cba8b09d96ca503000d8032fb9529.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/953f9ed459ecc78ee0a037e8e1542de501192eb6.zip)

Models Affected

Buildings_12Buildings.DHC.Plants.Combined.Examples.AllElectricCWStorage (sim)Templates → Compile
Buildings_latestBuildings.DHC.Examples.Combined.SeriesConstantFlow (sim)Compile → Templates
OpenIPSL_2.0.0OpenIPSL.Examples.DAEMode.N44_Original_Systems.Nordic44_Original_Case_Line_Opening (sim)Templates performance 27.21 → 51.75
ScalableTestSuiteScalableTestSuite.Electrical.DistributionSystemDC.ScaledExperiments.DistributionSystemModelicaActiveLoads_N_320_M_5 (sim)Templates → Verify
ScalableTestSuiteScalableTestSuite.Electrical.DistributionSystemDC.ScaledExperiments.DistributionSystemModelica_N_10_M_10 (sim)Compile performance 21.38 → 11.21
ScalableTestSuiteScalableTestSuite.Electrical.DistributionSystemDC.ScaledExperiments.DistributionSystemModelica_N_56_M_56 (sim)Verify → Templates
ScalableTestSuiteScalableTestSuite.Electrical.TransmissionLine.ScaledExperiments.TransmissionLineEquations_N_1280 (sim)Simulate performance 0:04:35 → 0:02:04
ScalableTestSuiteScalableTestSuite.Elementary.WhenEvents.ScaledExperiments.ManyEvents_N_8000_M_10 (sim)Simulate performance 37.56 → 21.93
ScalableTestSuite_nooptScalableTestSuite.Electrical.DistributionSystemAC.ScaledExperiments.DistributionSystemLinearIndividual_N_28_M_28 (sim)BackEnd performance 13.66 → 24.26
ScalableTestSuite_nooptScalableTestSuite.Power.ConceptualPowerSystem.ScaledExperiments.PowerSystemStepLoad_N_64_M_16 (sim)Simulate performance 12.33 → 5.53