char key[INSTR_DEFAULT_STR_SIZE];
snprintf (key, INSTR_DEFAULT_STR_SIZE, "%lld", counter++);
new_pajeStartLink(SIMIX_get_clock(), father, link_type, src, "topology", key);
char key[INSTR_DEFAULT_STR_SIZE];
snprintf (key, INSTR_DEFAULT_STR_SIZE, "%lld", counter++);
new_pajeStartLink(SIMIX_get_clock(), father, link_type, src, "topology", key);