I have the following problem
t3 = time() Z_OP = Model(with_optimizer(CPLEX.Optimizer)) t4 = time() if RE ==2 @variable(Z_OP, 0 <= x[l,m] <= 1 ) else @variable(Z_OP, x[l,m], Bin) end t5 = time() for i = 1:size(A,1) @constraint(Z_OP, (A*x)[i,1] .== 1) end t6 = time() @objective(Z_OP, Min, sum(B*x)) t7 = time() optimize!(Z_OP)
when I run the model, t6-t5 is very large if I compare it with t7-t6.
For 220 constraints and 24310 variables:
t6-t5 = 105.4s
t7-t6 = 0.304s
I have no idea what that time (t6-t5) refers to or why it takes longer in that step. Anybody can help me, please!!!