[TRNSYS-users] Stuck simulation

[Vincent Dolisy]

Dear David,

I've got a Fortran compiler and I can run the simulation from this.
(Compaq Visual Fortran)

I have set a breakpoint in the trnsys.for file at the end of the timestep:

C    AT THIS POINT THE SIMULATION IS FINISHED AT THE CURRENT TIMESTEP
     RETURN

In fact I add this breakpoint at the timestep just before the simulation
begins to be stuck. Then I run it line by line and hope to find an
infinite loop or something like that. When I run it line by line the
source code window switches to the "Disassembly window" so that I cannot
see any source code lines anymore. In the "Disassembly window" each line
is scanned one by one until the cursor stops at the line:

0046F993   call        eax

Do you know how I can find the source code line (or file) corresponding to
a line in the "Disassembly window"?

The way I debug is maybe not good. Do you know any good strategy to debug
this kind of problem ?

Thanks a lot.

Kind regards,
Vincent



> Vincent,
>
>> *TRACE*  UNIT  51  TYPE  56  AT TIME   2.6764166666666665E+03  ITERATION
>>  2  CALL   13105  POST-CONVERGENCE CALL. (can you tell me what it
>> means?)
>>
> once TRNSYS converges on a solution at a given time step, the kernel
> calls all types once more so that they can do anything that they might
> need to do (update summaries, print reports for that time step, make
> control decisions that are not supposed to be iterative, etc.)
>> The simulation time step is 1 minute and if I use 5 minutes it does not
>> hang up at the same hour.
>>
>> Moreover I have already encountered the problem during the night, that
>> is
>> to say when the system is turned off (heating coils, cooling coils,
>> humidifiers, PID's are switched off).
>>
> all of those suggest that there is something that gets stuck in an
> infinite loop. The only way to really track it down is to run it from
> the Fortran compiler I am afraid,
> Kind regards,
>  David
>
>
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-- 
Vincent DOLISY
Ingénieur de recherche

Université de Liège
Département des Sciences et Gestion de l'Environnement
Unité de Surveillance de l'Environnement (Energie)
185, Avenue de Longwy
B-6700 ARLON
Tel : 32-(0)63 230 937
Fax : 32-(0)63 230 800
Mail: Vincent.Dolisy at ulg.ac.be
WEB : http://www.dsge-arlon.ulg.ac.be/energie/