Re: sensitivity analysis with GenOpt

[Jeff Thornton <thornton@xxxxxxxxxxxx>]

At 12:42 PM 5/5/2004 +0200, you wrote:

> You might want to consider using
> GenOpt for parametric studies (too). GenOpt is available from LBL
> (http://SimulationResearch.lbl.gov)
> and may be used for both optimization and sensitivity analysis. It is not
> easy to get into it, but once you are familiar with GenOpt you may take
> advantage of the many features it offers. 
>
> In order to gather results and parameters used from subsequent TRNSYS
> simulations in the same file, I have written a primitive type (type180).
> (GenOpt does that too, but using type180 provides a bit more
> flexibility). If anyone is interested in using this little helper, it is
> attached (type180.for is the code and type180.for is some explanation and
> an extract from the deck that illustrates the use of the type.) Because
> it was not my intention to distribute it, it was not developed to
> perfection. The feature that is most obviously lacking is mentioned in
> file "type180.dck".

Peter, et. al.

I completely agree with you about GENOPT.  It's a really nice
program - but it is a bit hard to get it working perfectly with
TRNSYS.  After quite a bit of playing with it for a few projects we
decided to write our own front-end that scans TRNSYS input files, shows
you a list of available parameters, writes all the required GENOPT
template files and then calls GENOPT - all through an easy to use
interface.  We've been using it in-house for the past couple of
years with great result and have made it available for sale for about a
year now.  We just wrote a new version of this program for TRNSYS 16
which encompasses all the new features in GENOPT including the ability to
optimize both continuous and discrete variables.  If you are
interested I can send you the document describing TRNOPT for
reference.

I've also attached two screen captures from the program for
reference.

Jeff

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