[TRNSYS-users] Stuck simulation

[David Bradley]

Vincent,
  Usually when you get into that "disassembly window" it means that the 
actual crash has occurred inside the TRNExe and not inside the Fortran 
code. Its not any easy thing to figure out. One thing you might try, if 
you haven't already, is to turn on the debugging switch in the Studio 
control cards. Among other things, that will activate two checks at the 
end of each time step. One check will make sure that none of the 
components wrote outside of the OUT() array space that is allocated to 
them. The other check will make sure that none of the outputs of any of 
the components get set to the "NaN" (not a number) condition.
Kind regards,
 David


Vincent Dolisy wrote:
> 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
>>
>>
>> --
>> ***********************************************************************
>> Thermal Energy System Specialists (TESS), LLC
>> David BRADLEY                      22 N. Carroll Street - Suite 370
>> Partner                            Madison, WI 53703
>>                                    USA
>> P: +1.608.274.2577
>> F: +1.608.278.1475
>> E-mail: bradley at tess-inc.com
>> Web Pages:  http://www.tess-inc.com    and      http://www.trnsys.com
>>
>> ***********************************************************************
>>
>> _______________________________________________
>> TRNSYS-users mailing list
>> TRNSYS-users at cae.wisc.edu
>> https://www-old.cae.wisc.edu/mailman/listinfo/trnsys-users
>>
>>     
>
>
>   

-- 
***********************************************************************
Thermal Energy System Specialists (TESS), LLC 
David BRADLEY                      22 N. Carroll Street - Suite 370 
Partner                            Madison, WI 53703 
                                   USA
P: +1.608.274.2577 
F: +1.608.278.1475
E-mail: bradley at tess-inc.com 
Web Pages:  http://www.tess-inc.com    and      http://www.trnsys.com

***********************************************************************

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.onebuilding.org/pipermail/trnsys-users-onebuilding.org/attachments/20090903/dfac2b7b/attachment-0001.htm>