python3 -m fmpy simulate  --output-file Buildings_8_Buildings.BoundaryConditions.SolarIrradiation.BaseClasses.Examples.SkyBrightness_res.csv --start-time 0 --stop-time 8.64e+06 --timeout 50 --relative-tolerance 1e-06 Buildings_8_Buildings_BoundaryConditions_SolarIrradiation_BaseClasses_Examples_SkyBrightness.fmu