Environment - simulationEnvironment: startTime=0 stopTime=504800 tolerance=1e-06 numberOfIntervals=140 stepSize=3605.71 Regular simulation: ./Buildings_latest_Buildings.Air.Systems.SingleZone.VAV.Examples.ChillerDXHeatingEconomizer -abortSlowSimulation -alarm=480 -s cvode -emit_protected -lv LOG_STATS LOG_STDOUT | info | Using sparse solver for linear system 10, | | | | because density of 0.160 remains under threshold of 0.200. LOG_STDOUT | info | Using sparse solver for linear system 22, | | | | because density of 0.160 remains under threshold of 0.200. LOG_STDOUT | info | The maximum density for using sparse solvers can be specified | | | | using the runtime flag '<-lssMaxDensity=value>'. LOG_ASSERT | warning | [/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 11.0.0-master/Fluid/Movers/BaseClasses/PartialFlowMachine.mo:417:3-427:39:writable] | | | | The following assertion has been violated during initialization at time 0.000000 | | | | ((false)) --> "*** Warning in ChillerDXHeatingEconomizer.hvac.pumChiWat: Mover has per.etaHydMet=.Power_VolumeFlowRate or per.etaHydMet=.EulerNumber. | | | | This requires per.pressure to be provided. | | | | Because it is not, the model overrides this setting by using per.etaHydMet=.NotProvided. | | | | Also consider using models under Movers.Preconfigured which autopopulate a pressure curve." LOG_ASSERT | warning | [/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 11.0.0-master/Fluid/Movers/BaseClasses/PartialFlowMachine.mo:429:3-439:39:writable] | | | | The following assertion has been violated during initialization at time 0.000000 | | | | ((false)) --> "*** Warning in ChillerDXHeatingEconomizer.hvac.pumChiWat: Mover has per.etaMotMet=.Efficiency_MotorPartLoadRatio or per.etaMotMet=.GenericCurve. | | | | This requires per.WMot_nominal or per.pressure to be provided. Because neither is provided, | | | | the model overrides this setting and by using per.etaMotMet=.NotProvided. | | | | Also consider using models under Movers.Preconfigured which autopopulate a pressure curve." LOG_SUCCESS | info | The initialization finished successfully with 3 homotopy steps. LOG_STDOUT | info | Chattering detected around time 4024.57560184..4905.28147452 (100 state events in a row with a total time delta less than the step size 1802.85714286). This can be a performance bottleneck. Use -lv LOG_EVENTS for more information. The zero-crossing was: not pre(con.hysHea.y) and hvac.uHea > 0.05 or pre(con.hysHea.y) and hvac.uHea >= 0.01 LOG_ASSERT | debug | Aborting simulation due to chattering being detected and the simulation flags requesting we do not continue further.