* communication either */
for (size_t i = 0; i < host_nb; i++) {
model->get_maxmin_system()->expand(host_list[i]->get_cpu()->get_constraint(), get_variable(),
* communication either */
for (size_t i = 0; i < host_nb; i++) {
model->get_maxmin_system()->expand(host_list[i]->get_cpu()->get_constraint(), get_variable(),