link.bandwidth = cluster->loopback_bw;
link.latency = cluster->loopback_lat;
link.policy = SURF_LINK_FATPIPE;
sg_platf_new_link(&link);
link.bandwidth = cluster->loopback_bw;
link.latency = cluster->loopback_lat;
link.policy = SURF_LINK_FATPIPE;
sg_platf_new_link(&link);