XBT_INFO("Host \"%u\" received \"%s\"", rank, res);
XBT_INFO("Host \"%u\" send 'Token' to Host \"%s\"", rank, neighbor_mailbox->name());
neighbor_mailbox->send(res, task_comm_size);
XBT_INFO("Host \"%u\" received \"%s\"", rank, res);
XBT_INFO("Host \"%u\" send 'Token' to Host \"%s\"", rank, neighbor_mailbox->name());
neighbor_mailbox->send(res, task_comm_size);