if(strcmp(struct_cluster->V_cluster_availability_file,"")){
xbt_dict_set(patterns, "radical", bprintf("%d", start), xbt_free);
char* tmp_availability_file = xbt_strdup(struct_cluster->V_cluster_availability_file);
xbt_str_varsubst(tmp_availability_file,patterns);
XBT_DEBUG("\tavailability_file=\"%s\"",tmp_availability_file);
if(strcmp(struct_cluster->V_cluster_availability_file,"")){
xbt_dict_set(patterns, "radical", bprintf("%d", start), xbt_free);
char* tmp_availability_file = xbt_strdup(struct_cluster->V_cluster_availability_file);
xbt_str_varsubst(tmp_availability_file,patterns);
XBT_DEBUG("\tavailability_file=\"%s\"",tmp_availability_file);