I usually face with MIP problems. I want to know what software is better in what aspect (such as solution time, used node etc.) in MIP, CPLEX solver in GAMS or IBM ILOG CPLEX?
As far as I know, the solver (cplex) is the same in both suites. The main difference, to me, are the modelling tools around the solver in these suites. GAMS uses an AMPL-like modeling language and cplex is one the the solvers it can use. OPL studio or concert technology (IBM ILOG) use cplex (linear/integer/mixed interger programming) or cp (constraints programming). Both cplex and cp belong to IBM. I think the choice should mostly depend on how familiar you are with one of those suites.
Yes, the cplex solver is the same in both suites. GAMS does have the option of using other solvers too (e.g. Gurobi) so you could experiment a little more.
if they are the same, why IBM CPLEX is around 1.2 Giga byte and Gams is just 100 MB? I think the differences are absolutely more. For instance, you cannot call GAMS from MATLAB as you can do it in IBM ILOG CPLEX
Yes it is possible to call GAMS from MATLAB and vice versa. I am currently using this functionality
I do not know how to call cplex from matlab, could you guide me please?
sorry i did not see this comment. the interface is called GDXMRW and GDXMRW. This is a link to the PDF that explains the bulk of it http://pages.cs.wisc.edu/~ferris/matlab/gdxmrw.pdf Also there are good youtube tutoriasl here: https://www.youtube.com/watch?v=QBOXB3foG8Y&t=356s and https://www.youtube.com/watch?v=QBOXB3foG8Y&t=356s Cheers!
can anybody pls tell how to solve objective with socp constraints in cplex of gams i tried but it is not working
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