-XBT_PUBLIC_DATA(xbt_dict_t) trace_connect_list_host_avail;
-XBT_PUBLIC_DATA(xbt_dict_t) trace_connect_list_host_speed;
-XBT_PUBLIC_DATA(xbt_dict_t) trace_connect_list_link_avail;
-XBT_PUBLIC_DATA(xbt_dict_t) trace_connect_list_link_bw;
-XBT_PUBLIC_DATA(xbt_dict_t) trace_connect_list_link_lat;
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-XBT_PUBLIC(double) parse_cpu_speed(const char *str_speed);