OpenModelica v1.26 from 2026-04-03 12:11:21 to 2026-04-03 23:52:20

Summary

OMC Commits0
Libraries Changed2
Number of Improvements0
Number of Regressions3
Number of Performance Improvements0
Number of Performance Regressions2

OpenModelica Changes

CommitDateAuthorSummary

OpenModelicaLibraryTesting Changes

CommitDateAuthorSummary
8f4dee72026-04-01 15:14:49 +0200linuslangenkamp[GBODE] switch to Radau IIA once again (#282)
dbfd1362026-03-27 15:34:11 +0100linuslangenkamp[GBODE] set ESDIRK4 as default integrator (#281)

Library Changes

LibraryChange
Buildings_12From version 12.1.1-maint.12.x (https://github.com/lbl-srg/modelica-buildings/archive/520fee0b3fa38772968cb544ff29375e9fbace4b.zip) to 12.1.1-maint.12.x (https://github.com/lbl-srg/modelica-buildings/archive/e99e042c0dd0d7cfd19425fe260eb1501486b194.zip)
Buildings_latestFrom version 13.0.0-master (https://github.com/lbl-srg/modelica-buildings/archive/0346e01761d1159dde489ca37a52d17824747d93.zip) to 13.0.0-master (https://github.com/lbl-srg/modelica-buildings/archive/f68c083acb36a44f44f2653b60e6580945ae23f4.zip)

Models Affected

Buildings_12Buildings.DHC.ETS.Combined.Validation.ChillerBorefield (sim)Simulate → Compile
Buildings_12Buildings.Examples.Tutorial.SimpleHouse.SimpleHouse6 (sim)Verify → Simulate
Buildings_12Buildings.ThermalZones.Detailed.Examples.FFD.Tutorial.MixedConvection (sim)Simulate performance 0.18 → 0:06:40
Buildings_12Buildings.ThermalZones.EnergyPlus_24_2_0.Validation.ZoneSurface.OneZoneConstantFloorTemperature (sim)Verify → Simulate
Buildings_latestBuildings.Examples.VAVReheat.Validation.Guideline36SteadyState (sim)Templates performance 5.53 → 10.05