[Coin-ipopt] How to use ISCALE 5 in old Fortran version

[Andreas Waechter]

Hi Danh,

Ipopt should automatically scale the derivatives internally.  In other 
words, you write the evaluation code (also for the derivatives) as if no 
scaling is done, and if you want to have Ipopt look at a scaled problem, 
you only need to specify the factors in SCALE.DAT.

I hope this helps,

Andreas

On Thu, 23 Feb 2006, Su Ba wrote:

> Hi Andreas,
>
> If I use option iscale=5, I have to submit SCALE.DAT.  But I do not know if 
> Ipopt scales automatiaclly the derivatives and hessian of constraints.  Could 
> you exaplain me how to do.
>
> Thank you in advance.
>
> Danh.
>
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