I solved two supply chain cost minimization problems by modelling in GAMS ( General Algebraic Modeling System) and MATLAB R2015a.I used the same data for both the GAMS and MATLAB environments. I got different optimum values for GAMS and MATLAB environments. I cross checked the two problems optimum results obtained through GAMS and MATLAB by substituting in the constraints. Both are satisfying the constraints. For the GAMS I used the CPLEX solver and for MATLAB I used intlinprog solver.
I got the following optimum results
Problem GAMS MATLAB
Problem 1 16,51,79,750 11,72,39,625
Problem 2 13,25,19,250 10,91,36,625
I am in dilemma which results are correct. I also want to know why this huge difference in cost has occurred.
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