OpenModelica v1.26-fmi from 2026-04-26 02:01:10 to 2026-05-03 02:06:18

Summary

OMC Commits	9
Libraries Changed	13
Number of Improvements	6
Number of Regressions	14
Number of Performance Improvements	3
Number of Performance Regressions	3

OpenModelica Changes

Commit	Date	Author	Summary
a859cb6592	2026-05-01 19:53:07 +0200	Adrian Pop	fix copy-paste error (#15474)
9154da1efe	2026-05-01 10:37:37 +0200	Adrian Pop	hopefully git describe work fine now (#15472)
6b3ced5fdf	2026-04-30 06:56:48 +0200	Adrian Pop	fetch tags for describe to work properly (#15461)
5d97a3b806	2026-04-30 01:04:32 +0200	Adrian Pop	update the submodules checkout to recursive (#15459)
ffcb890ea6	2026-04-29 15:37:22 +0200	Adrian Pop	remove the wip workflow (#15457)
b3b502fb79	2026-04-29 13:06:41 +0200	Adrian Pop	add the workflows from master (#15454)
9d6af6ab62	2026-04-27 12:22:00 +0200	Adrian Pop	fix for #15300 - filter on discrete variables (#15302) (#15429)
f562d764c3	2026-04-27 09:59:51 +0200	Adrian Pop	Fix compilation on clang 21.1.8 (#15426)
113b56ca81	2026-04-26 09:44:24 +0200	Adrian Pop	force qt6 on resolute (#15422)

OpenModelicaLibraryTesting Changes

Commit	Date	Author	Summary
1dd4db7	2026-04-19 14:25:16 +0200	Adrian Pop	force fetch of tags to handle the floating tag 'nightly' (#285)
e83c3f4	2026-04-14 08:15:53 +0200	Adrian Pop	cannot run python -m fmpy via check_output_log (#284)

Library Changes

Library	Change
AixLib	From version 2.1.1 (https://github.com/RWTH-EBC/AixLib/archive/b9d4d88d1fb38511d2af0958f11855c14064841a.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.post137-g8ed186e-linux-debug info: 1 warnings info: 0 errors to 2.1.1 (https://github.com/RWTH-EBC/AixLib/archive/b9d4d88d1fb38511d2af0958f11855c14064841a.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_11	From version 11.1.1-maint.11.x (https://github.com/lbl-srg/modelica-buildings/archive/c378cb11f92b35977e2bcecf2df34bd512d2e1aa.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.post137-g8ed186e-linux-debug info: 1 warnings info: 0 errors to 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
Buildings_12	From version 12.1.1-maint.12.x (https://github.com/lbl-srg/modelica-buildings/archive/e4c08a21b87cc023a15b7c0daef1988024507e80.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.post137-g8ed186e-linux-debug info: 1 warnings info: 0 errors to 12.1.1-maint.12.x (https://github.com/lbl-srg/modelica-buildings/archive/fe09072c92b91b605c9c712ddf54b9a64178b622.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_latest	From version 13.0.0-master (https://github.com/lbl-srg/modelica-buildings/archive/543125ca4b4d77c3dc64820c45bdb2928efb502a.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.post137-g8ed186e-linux-debug info: 1 warnings info: 0 errors to 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
Dynawo	From version 1.7.0 (https://github.com/dynawo/dynawo/archive/6211f2e9c98dd45c49fc4724aa9ae768a372af83.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.post137-g8ed186e-linux-debug info: 1 warnings info: 0 errors to 1.7.0 (https://github.com/dynawo/dynawo/archive/6211f2e9c98dd45c49fc4724aa9ae768a372af83.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
Greenhouses	From version 1.0.0-master (845525ed51e3048447839e8896e25f3690c02eb9) 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.post137-g8ed186e-linux-debug info: 1 warnings info: 0 errors to 1.0.0-master (845525ed51e3048447839e8896e25f3690c02eb9) 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
IDEAS	From version 4.0.0 (https://github.com/open-ideas/IDEAS/archive/24eea8ff8c67d1b32d53429eaaec9c6a3fbaac84.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.post137-g8ed186e-linux-debug info: 1 warnings info: 0 errors to 4.0.0 (https://github.com/open-ideas/IDEAS/archive/24eea8ff8c67d1b32d53429eaaec9c6a3fbaac84.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
IDEAS_dev	From version 4.0.0-master (272d82aef8da5484b3ed729ba6d6cc1db9754f1e) 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.post137-g8ed186e-linux-debug info: 1 warnings info: 0 errors to 4.0.0-master (272d82aef8da5484b3ed729ba6d6cc1db9754f1e) 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
OpenIPSL_2.0.0	From version 2.0.0 (https://github.com/OpenIPSL/OpenIPSL/archive/052ec37cdfd40e6e5506ec146d98afd40fe2792f.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.post137-g8ed186e-linux-debug info: 1 warnings info: 0 errors to 2.0.0 (https://github.com/OpenIPSL/OpenIPSL/archive/052ec37cdfd40e6e5506ec146d98afd40fe2792f.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
ScalableTestGrids_noopt	From version 1.2.0 (https://github.com/PowerGrids/ScalableTestGrids/archive/f18d08e87f948a85992343913e1adfd7d24cad95.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.post137-g8ed186e-linux-debug info: 1 warnings info: 0 errors to 1.2.0 (https://github.com/PowerGrids/ScalableTestGrids/archive/f18d08e87f948a85992343913e1adfd7d24cad95.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
ScalableTestSuite	From version 2.2.0-master (ce9eedecd9f6c487d11cfc2ed9724e75c0229323) 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.post137-g8ed186e-linux-debug info: 1 warnings info: 0 errors to 2.2.0-master (ce9eedecd9f6c487d11cfc2ed9724e75c0229323) 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
ThermofluidStream	From version 1.2.0 (https://github.com/DLR-SR/ThermofluidStream/archive/8d2287a558d9d5e3a6235c981d5a60044dae5b61.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.post137-g8ed186e-linux-debug info: 1 warnings info: 0 errors to 1.3.0 (https://github.com/DLR-SR/ThermofluidStream/archive/e43023fd5b731416a60a0f0db21791f71f0d2baf.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
ThermofluidStream_dev	From version 1.2.0-main (97dc3776922ba27582d364a9bccce3d404c5ca30) 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.post137-g8ed186e-linux-debug info: 1 warnings info: 0 errors to 1.3.0-main (e43023fd5b731416a60a0f0db21791f71f0d2baf) 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

AixLib	AixLib.Systems.ModularAHU.Examples.EONERC_AHU2 (sim)	BackEnd performance 4.41 → 10.11
AixLib	AixLib.ThermalZones.HighOrder.Validation.ASHRAE140.Case320 (sim)	Simulate → Compile
Buildings_11	Buildings.ThermalZones.Detailed.Examples.FFD.Tutorial.MixedConvection (sim)	Simulate performance 0:07:02 → 1.45
Buildings_12	Buildings.Examples.ScalableBenchmarks.BuildingVAV.Examples.TwoFloor_TwoZone (sim)	Compile → Failed
Buildings_latest	Buildings.Examples.ScalableBenchmarks.BuildingVAV.Examples.TwoFloor_TwoZone (sim)	Compile → Failed
Buildings_latest	Buildings.Fluid.HeatExchangers.CoolingTowers.Examples.Merkel (sim)	Verify → Simulate
Dynawo	Dynawo.Examples.RVS.TestCases.TestB.TestBNoSvcNoLoadReset (sim)
Greenhouses	Greenhouses.Examples.GlobalSystem_1 (sim)	Compile → FrontEnd
Greenhouses	Greenhouses.Examples.GlobalSystem_2 (sim)	Compile → FrontEnd
Greenhouses	Greenhouses.Examples.Greenhouse_1 (sim)	Compile → FrontEnd
Greenhouses	Greenhouses.Examples.Greenhouse_2 (sim)	Compile → FrontEnd
IDEAS	IDEAS.Buildings.Components.BaseClasses.RadiativeHeatTransfer.Examples.ZoneLwDistribution (sim)	Simulate → FrontEnd
IDEAS_dev	IDEAS.Buildings.Components.BaseClasses.RadiativeHeatTransfer.Examples.ZoneLwDistribution (sim)	Simulate → FrontEnd
OpenIPSL_2.0.0	OpenIPSL.Examples.DAEMode.N44_Original_Systems.Nordic44_Original_Case_Bus_Fault (sim)	BackEnd performance 50.06 → 29.03
OpenIPSL_2.0.0	OpenIPSL.Examples.DAEMode.N44_Original_Systems.Nordic44_Original_Case_Line_Opening (sim)	BackEnd performance 51.37 → 29.60
ScalableTestGrids_noopt	ScalableTestGrids.Models.Type1.Type1_N_3_M_4 (sim)
ScalableTestSuite	ScalableTestSuite.Electrical.DistributionSystemAC.ScaledExperiments.DistributionSystemLinearIndividual_N_28_M_28 (sim)	BackEnd performance 11.99 → 22.89
ScalableTestSuite	ScalableTestSuite.Mechanical.Strings.ScaledExperiments.StringModelica_N_64 (sim)	Verify → Compile
ScalableTestSuite	ScalableTestSuite.Power.ConceptualPowerSystem.ScaledExperiments.PowerSystemStepLoad_N_64_M_4 (sim)	Failed → Verify
ScalableTestSuite_noopt	ScalableTestSuite.Electrical.DistributionSystemDC.ScaledExperiments.DistributionSystemModelicaActiveLoads_N_56_M_56 (sim)	Simulate performance 7.11 → 20.62
ThermofluidStream	ThermofluidStream.Examples.HeatPump (sim)	Verify → Compile
ThermofluidStream	ThermofluidStream.Examples.SimpleAirCycle (sim)	Simulate → Compile
ThermofluidStream	ThermofluidStream.Examples.SimpleStream (sim)	Simulate → Verify
ThermofluidStream	ThermofluidStream.Processes.Tests.Flow_Resistance (sim)	Simulate → Verify
ThermofluidStream_dev	ThermofluidStream.Examples.HeatPump (sim)	Verify → Compile
ThermofluidStream_dev	ThermofluidStream.Processes.Internal.CentrifugalPump.CalculateCoefficientsFromMeasurements (sim)	Failed → Verify
ThermofluidStream_dev	ThermofluidStream.Processes.Tests.CentrifugalPump (sim)	Failed → Simulate
ThermofluidStream_dev	ThermofluidStream.Processes.Tests.CentrifugalPumpCharacteristics (sim)	Failed → Verify