[Coin-ipopt] Gams-IPOPT: SOLVER ERROR getHesRecChecked: the Hessian records have been exhausted

[Stefan Vigerske]

Hi,

> I am running Ipopt through the gams interface and I obtain an error
> message telling me that the " records of the Hessian have been
> exhausted".
> What does this mean? Is there a way to fix this error?

I'm not sure what it mean, but I guess that the memory that is allocated 
to compute a Hessian inside the GAMS I/O libraries is exhausted.
You can try to run with the option WORKFACTOR=100 on the gams command 
line, or add the line "option model.workfactor=100;" in your gams model 
file, where model stands for the name of your model.
Also you can try larger (or smaller) values then 100.

Best,
Stefan

-- 
Stefan Vigerske
Humboldt University Berlin, Numerical Mathematics
http://www.math.hu-berlin.de/~stefan