[Solved] Impossible to use knitro

Support
,
1

Hi everyone,

I have requested a trial license for Knitro.

I tried with a very simple problem (attached to this message) and use the following commands :

model ModeleTest.mod;

option solver knitro;

solve;

I obtain the following error message :

image
image401×193 9.34 KB

and in the ampl batch :

exit value 18446744072635810105

knitro.exe and knitro1600.dll are present in the ampl directory.

I do not have any additional log if I add “option knitro_options “outlev=2”;”

There is no problem if I use ipopt instead of knitro.

Can someone help me ?

ModeleTest.mod (114 Bytes)

2

There is a problem with the binary files of knitro present in the global bundle for Ampl.

But everything is ok if we download specific files for Knitro here : https://portal.ampl.com/user/ampl/download/knitro

The files are clearly different since size does not match.