+ _surf_cfg_cb_contexts_nthreads, NULL);
+
+ /* minimal number of user contexts to be run in parallel */
+ default_value_int = 1;
+ xbt_cfg_register(&_surf_cfg_set, "contexts/parallel_threshold",
+ "Minimal number of user contexts to be run in parallel",
+ xbt_cfgelm_int, &default_value_int, 1, 1,
+ _surf_cfg_cb_contexts_parallel_threshold, NULL);