[Help-glpk] RE : Help-glpk Digest, Vol 49, Issue 16

[m. cyrille ANATO]

thanks you very much. it's very good

But I have another problem

this variable b is binary

var b{i in I,j in I}, binary;

/* indique si le chemin optique utilise le lien (i,j) */

 

and I have this constraintes

s.t. Trafic{i in I,j in I, s in I, t in I} : lambda[i,j,s,t] <= b[i,j] * lambdaST;

s.t. LienI{j in I} : sum{i in I} b[i,j] <= delta;

s.t. LienJ{i in I} : sum{j in I} b[i,j] <= delta;

s.t. Equivalence{i in I, j in I} : b[i,j] = b[j,i];

 

The model is generated very well. but I don't have the optimal solution

 

When i say Output file i say that b[i,j] = 0 for all i and j

then next four constraints can't be respected.

Can you help me

 

Best Regards

SOYEZ TOUJOURS JOYEUX

ANATO Miminwanon Cyrille
Elève Ingénieur à l'Institut de Mathématiques

et de Sciences Physiques
O7 BP 1130 Cotonou ( BENIN)
Tél Fixe : 00229 21353081
Tél Portable : 00229 97886021

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