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Re: [TRNSYS-users] Problem with GenOpt and TRNOpt: discrete variable
Alexis -
I have usually seen this when the TRNSYS simulation is returning an error
and not completing its simulation. Check the *.lst file from the TRNSYS
run and see if there is an error there.
Regards,
Tim
----------------------------------
Timothy McDowell
Executive Vice President
Thermal Energy System Specialists, LLC
22 N. Carroll St, Suite 370
Madison, WI 53703
Phone: 608-274-2577
Fax: 608-278-1475
----- Original Message -----
From: "Alexis Fabre (Trainee 3E)" <alexis.fabre@3e.eu>
Sent: Wed, September 29, 2010 9:24
Subject:[TRNSYS-users] Problem with GenOpt and TRNOpt: discrete variable
Dear TRNSyst user,
I try to optimize a system with TRNOpt. I have the
total cost of my system to minimize depending on 2 variables (one continuous
and one discrete which can take 3 values).
When I run TRNOpt with my system which depends only
on the continuous variable (for instance with Hooke-Jeeves) it works really
well, great.
But when I try to add the dependence with de second
variable (i.e the discrete variable and the continuous variable) it does not
work.
I received the error on the GenOpt window:
“GenOpt terminated with error.
See logfile for further information”
I received the error when I used the algorithm with these
parameters:
Hybrid for Continuous and Discrete
NeighborhoodTopology = gbest
NeighborhoodSize = 1
NumberOfParticle = 0
NumberOfGeneration = 0
Seed = 0
CognitiveAcceleration = 0.5
SocialAcceleration = 0.5
MaxVelocityGainContinuous = 0
MaxVelocityDiscrete = 0.5
ConstrictionGain = 0.5
MeshSizeDivider = 2
InitialMeshSizeExponent = 0
MeshSizeExponentIncrement = 1
NumberOfStepReduction = 4
I attach the logfile to this mail and the file where
there are all the parameters for TRNOpt
I tried other algorithms and I received the same
error except for the “parametric” where it worked but with some
errors at the beginning which I paste at the end of this mail.
I do not know which algorithm is the best one to use
when I want to optimize a system with a continuous and a discrete variable
(the
discrete variable has to take three values: 1,2,3)
Maybe somebody has an idea which can help me to find
the solution of my problem?
Thanks a lot
Alexis Fabre
**** Warning ****
Simulation 1: Exception in evaluating x = ( 20.0; 0).
Exception in executing the simulation program
Current command String: 'C:\Program
Files\Trnsys16\Exe\TRNEXE.EXE "C:\Program
Files\Trnsys16\optimization\GENOPT\SIMULATION\GenoptInputFile.DCK" /n
/WAIT '.
Exception message:
Error in executing the simulation program
Exit value of the simulation program: 1
Current command String : 'C:\Program
Files\Trnsys16\Exe\TRNEXE.EXE "C:\Program
Files\Trnsys16\optimization\GENOPT\SIMULATION\GenoptInputFile.DCK" /n
/WAIT '.
Error stream of simulation program : Simulation
program did not return an error stream.
**** Info ****
Simulation 2: Caught 'java.lang.Exception' with message:
Exception in executing the simulation program
Current command String: 'C:\Program
Files\Trnsys16\Exe\TRNEXE.EXE "C:\Program
Files\Trnsys16\optimization\GENOPT\SIMULATION\GenoptInputFile.DCK" /n
/WAIT '.
Exception message:
Error in executing the simulation program
Exit value of the simulation program: 1
Current command String : 'C:\Program
Files\Trnsys16\Exe\TRNEXE.EXE "C:\Program
Files\Trnsys16\optimization\GENOPT\SIMULATION\GenoptInputFile.DCK" /n
/WAIT '.
Error stream of simulation program : Simulation
program did not return an error stream.
Try to evaluate simulation a second time.
**** Warning ****
Simulation 2: Exception in evaluating x = ( 44.0; 0).
Exception in executing the simulation program
Current command String: 'C:\Program
Files\Trnsys16\Exe\TRNEXE.EXE "C:\Program
Files\Trnsys16\optimization\GENOPT\SIMULATION\GenoptInputFile.DCK" /n
/WAIT '.
Exception message:
Error in executing the simulation program
Exit value of the simulation program: 1
Current command String : 'C:\Program
Files\Trnsys16\Exe\TRNEXE.EXE "C:\Program
Files\Trnsys16\optimization\GENOPT\SIMULATION\GenoptInputFile.DCK" /n
/WAIT '.
Error stream of simulation program : Simulation
program did not return an error stream.
Alexis Fabre
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----- End of original message -----