what does cplexlp exitflag is -8 ?

I have an exit flag -8, I searched for it and didn't know what does it mean ?

exitflag =

      -8

[seventheta,MP,exitflag]= cplexlp(-f,A_mastersp1,b_mastersp1,[],[],lb,ub);

Answer 1

[Vitali Avagyan]

Hi Islam,

I had the same problem when running optimisation problem from cplex in matlab. However, the problem is not in cplex itself, but the memory in matlab I guess. Check whether you have very large matrixes that you can convert into sparse ones or any other initialising problems before it comes to the optimisation step. "-8" I can interpret as running cplex without any matrixes (or equivalently with [] matrixes) which yields to an outcome [].

Let me know if that the case!