-//TODO: resolve dependencies
-static int TRACE_is_enabled(void) {return 0;}
-static void TRACE_surf_host_set_utilization(const char *resource,
- const char *category,
- double value,
- double now,
- double delta){}
-static double TRACE_last_timestamp_to_dump = 0;
-
-XBT_LOG_NEW_DEFAULT_SUBCATEGORY(surfpp_cpu, surfpp,