OpenModelica v1.25-cpp from 2026-04-27 12:47:10 to 2026-05-04 09:06:56

Summary

OMC Commits0
Libraries Changed5
Number of Improvements5
Number of Regressions5
Number of Performance Improvements6
Number of Performance Regressions2

OpenModelica Changes

CommitDateAuthorSummary

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_12From version 12.1.1-maint.12.x (https://github.com/lbl-srg/modelica-buildings/archive/fe09072c92b91b605c9c712ddf54b9a64178b622.zip) to 12.1.1-maint.12.x (https://github.com/lbl-srg/modelica-buildings/archive/04b122f0c444f3a505163c76e7294db4964c62a8.zip)
Buildings_latestFrom version 13.0.0-master (https://github.com/lbl-srg/modelica-buildings/archive/543125ca4b4d77c3dc64820c45bdb2928efb502a.zip) to 13.0.0-master (https://github.com/lbl-srg/modelica-buildings/archive/2bc4c86e623c7929c87e874c36a5bb4f05b7433b.zip)
Chemical_masterFrom version 2.0.1-master (07147053efafc8dd807e58fbe15b944c1926315a) to 2.0.1-master (33474b4f04f7767fd5a40c4880200d44e32a884b)
ThermofluidStreamFrom version 1.2.0 (https://github.com/DLR-SR/ThermofluidStream/archive/8d2287a558d9d5e3a6235c981d5a60044dae5b61.zip) to 1.3.0 (https://github.com/DLR-SR/ThermofluidStream/archive/e43023fd5b731416a60a0f0db21791f71f0d2baf.zip)
ThermofluidStream_devFrom version 1.2.0-main (97dc3776922ba27582d364a9bccce3d404c5ca30) to 1.3.0-main (e43023fd5b731416a60a0f0db21791f71f0d2baf)

Models Affected

Buildings_12Buildings.Fluid.Geothermal.Borefields.BaseClasses.HeatTransfer.Validation.Measured_SmallScale (sim)Simulate → Compile
Buildings_latestBuildings.DHC.Loads.Combined.Examples.BuildingTimeSeriesWithETSDHWTank (sim)Templates performance 12.80 → 7.07
Chemical_masterChemical.Examples.GasSolubility_NIST1 (sim)Simulate performance 12.08 → 5.80
ThermofluidStreamThermofluidStream.Examples.EspressoMachine (sim)Verify → Simulate
ThermofluidStreamThermofluidStream.Examples.HeatPump (sim)Simulate performance 0:02:02 → 45.48
ThermofluidStreamThermofluidStream.Examples.ReverseHeatPump (sim)Simulate performance 0:01:22 → 0:10:04
ThermofluidStreamThermofluidStream.Examples.SimpleAirCycle (sim)Simulate → Verify
ThermofluidStreamThermofluidStream.Examples.SimpleCoolingCycle (sim)Verify → Simulate
ThermofluidStreamThermofluidStream.Examples.SimpleStream (sim)Simulate → Verify
ThermofluidStreamThermofluidStream.Examples.VaporCycle (sim)Simulate performance 19.11 → 10.28
ThermofluidStreamThermofluidStream.Undirected.HeatExchangers.Tests.TestDiscretizedHEX (sim)Simulate performance 30.46 → 10.80
ThermofluidStream_devThermofluidStream.Examples.EspressoMachine (sim)Verify → Simulate
ThermofluidStream_devThermofluidStream.Examples.ReverseHeatPump (sim)Simulate performance 49.75 → 0:10:00
ThermofluidStream_devThermofluidStream.Examples.SimpleCoolingCycle (sim)Verify → Simulate
ThermofluidStream_devThermofluidStream.Processes.Internal.CentrifugalPump.CalculateCoefficientsFromMeasurements (sim)Failed → Verify
ThermofluidStream_devThermofluidStream.Processes.Tests.CentrifugalPump (sim)Failed → Simulate
ThermofluidStream_devThermofluidStream.Processes.Tests.CentrifugalPumpCharacteristics (sim)Failed → Verify
ThermofluidStream_devThermofluidStream.Undirected.HeatExchangers.Tests.TestDiscretizedHEX (sim)Simulate performance 18.74 → 10.92