[Coin-ipopt] warm starting / trunk

Andreas Waechter andreasw at watson.ibm.com
Tue Sep 25 07:12:21 EDT 2007

Hi Matteo,

Victor Zavala had implemented the option to use Ipopt's warm start from 
AMPL.  In order to use it, you need to make sure that you are assigning 
some AMPL prefixes.

Please have a look at:


I hope this answers your questions.


On Mon, 24 Sep 2007, matteo tesser wrote:

> Hi,
> I'm trying to use the warm starting capabilities available with the trunk
> version of Ipopt (I tried the revision 1035 and the last one).
> but, when using the trunk versions (without using warmstarting), my ampl
> script crashes:
> the crash is is produced in the following way: a fist call to solve is made
> then ampl crashes in some varibale assignemnt.
> This does not happen with the version 3.3.2. There is some stabler version
> where to try warm starting features? or there is some way to help
> to debug this issue?
> Thank you,
> Matteo

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