[Ipopt] Infinite Loop Problem With Precompiled Ipopt DLL v3.8.1

[Stefan Vigerske]

Hi,

set Ipopts print level to a high value and attach the log to a new
ticket (https://projects.coin-or.org/Ipopt/newticket) ?

Stefan

Am 19.05.2010 15:30, schrieb Chris Madziasz:
> To Whom it May Concern,
> 
>  
> 
> I have downloaded the precompiled DLLs for Ipopt version 3.8.1 and built a
> VB.NET wrapper around them within Visual Studio 2008 Professional.  Within
> my wrapper I have incorporated a "multi-start" feature  that loops through
> many uniformly distributed starting points within the defined design space
> for a given optimization problem.  Inside of this looping I am creating a
> new Ipopt problem with the DLL's "CreateIpoptProblem" function, solving with
> "IpoptSolve", and then clearing the problem with "FreeIpoptProblem" before
> continuing to the next starting point.  I am then tracking the best
> objective function and its corresponding design variable optimums in an
> effort to find a global minimum within the design space.  I have, however,
> encountered an issue where in the execution of my project gets stuck in an
> infinite loop within the Ipopt DLL's "IpoptSolve" function.  This occurs for
> both the debug and release versions of the DLL and the starting point for
> which the infinite loop occurs appears to be dependent on the option
> tolerances that I define.  I would greatly appreciate any assistance from
> anybody that has encountered this issue previously, or has recommendations
> for a solution, and could point me in the right direction.
> 
>  
> 
> Thank you in advance,
> 
>  
> 
>  
> 
>  
> 
> Chris Magdziasz
> 
> Spiritech Advanced Products, Inc.
> 
> Phone: 561-741-3441
> 
> Fax: 561-741-3442
> 
>  
> 
> 
> 
> 
> 
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