GAMS World Forum

Thanks for that. My MOsek version does solve the model. But the simulation in the fourth stage does not produce adequate responses. Any hint on the major scaling issues coming from? The problem you have is kind of nasty and v10.0 struggles with it. It does not solve your problem. One thing I can see...

Hi, thanks for the reply. I attach the MOSEK specification only as I don't have the CONOPT license, it was run in a different computer. On line 244 is the start of the first stage of positive math programming to get marginals for calibration constraints. On line 395 is the start of the second stage ...

I'm running a model all in conic forms. My colleagues using CONOPT4 (and the options below) are getting sensible results (calibration and appropriate scenarios responses). But as I switch solvers to MOSEK (using exactly the same model), results are not looking good at all ( no scenarios responses, e...

Hi all, I'm building an agricultural sector model. Calibration is via positive mathematical programming. For the construction of the slope and intercept of the cost function I get the marginal values of the calibration constraint. But these are negative! Any hints why this may be the case?
Thanks!

Hi all, I'm editing this post as I've (kind of) succeeded on reformulating my non linear equation into a power cone. The relationship is between UNITS(i) and X_var(i), both positive variables. The form is as follows: UNITS(i)=constant*X_var(i)**(-1/elasticity(i)) where elasticity(i) is the elasticit...

Thank you! I will implement them and keep you posted on how they work

Hi all, I have a somewhat complex model, input dataset is large and it would be hard to set and reset parameters for multiple solves in just one run. However, when using a gms file with $include commands (one for each model run with a different input dataset) obviously errors occur as GAMS interpret...