msg_host_t pm1 = xbt_dynar_get_as(hosts_dynar, 1, msg_host_t);
msg_host_t pm2 = xbt_dynar_get_as(hosts_dynar, 2, msg_host_t);
msg_vm_t vm0, vm1;
msg_host_t pm1 = xbt_dynar_get_as(hosts_dynar, 1, msg_host_t);
msg_host_t pm2 = xbt_dynar_get_as(hosts_dynar, 2, msg_host_t);
msg_vm_t vm0, vm1;