xbt_die("Setting of whether to use coordinate cannot be disabled once set.");
}
+static void _sg_cfg_cb_surf_nthreads(const char *name, int pos)
+{
+ surf_set_nthreads(xbt_cfg_get_int(_sg_cfg_set, name));
+}
+
static void _sg_cfg_cb__surf_network_crosstraffic(const char *name,
int pos)
{
xbt_cfg_setdefault_string(_sg_cfg_set, "contexts/synchro", "busy_wait");
#endif
+ /* number of parallel threads for Surf */
+ xbt_cfg_register(&_sg_cfg_set, "surf/nthreads",
+ "Number of parallel threads used to update Surf models",
+ xbt_cfgelm_int, NULL, 1, 1,
+ _sg_cfg_cb_surf_nthreads, NULL);
+ xbt_cfg_setdefault_int(_sg_cfg_set, "surf/nthreads", surf_get_nthreads());
+
xbt_cfg_register(&_sg_cfg_set, "network/coordinates",
"\"yes\" or \"no\", specifying whether we use a coordinate-based routing (as Vivaldi)",
xbt_cfgelm_boolean, 1, 1, _sg_cfg_cb__surf_network_coordinates, NULL);
}
surf_min_index = 0;
- /* sequential version */
- xbt_dynar_foreach(model_list, iter, model) {
- surf_share_resources(model);
+
+ if (surf_get_nthreads() > 1) {
+ /* parallel version */
+#ifdef CONTEXT_THREADS
+ xbt_parmap_apply(surf_parmap, (void_f_pvoid_t) surf_share_resources, model_list);
+#else
+ xbt_die("Asked to run in parallel, but no thread at hand...");
+#endif
+ }
+ else {
+ /* sequential version */
+ xbt_dynar_foreach(model_list, iter, model) {
+ surf_share_resources(model);
+ }
}
unsigned i;
NOW = NOW + min;
- /* sequential version */
- xbt_dynar_foreach(model_list, iter, model) {
- surf_update_actions_state(model);
+ if (surf_get_nthreads() > 1) {
+ /* parallel version */
+#ifdef CONTEXT_THREADS
+ xbt_parmap_apply(surf_parmap, (void_f_pvoid_t) surf_update_actions_state, model_list);
+#endif
+ }
+ else {
+ /* sequential version */
+ xbt_dynar_foreach(model_list, iter, model) {
+ surf_update_actions_state(model);
+ }
}
#ifdef HAVE_TRACING
model->model_private->update_actions_state(NOW, min);
}
+/**
+ * \brief Returns the number of parallel threads used to update the models.
+ * \return the number of threads (1 means no parallelism)
+ */
+int surf_get_nthreads(void) {
+ return surf_nthreads;
+}
+
+/**
+ * \brief Sets the number of parallel threads used to update the models.
+ *
+ * A value of 1 means no parallelism.
+ *
+ * \param nb_threads the number of threads to use
+ */
+void surf_set_nthreads(int nthreads) {
+
+ if (nthreads<=0) {
+ nthreads = xbt_os_get_numcores();
+ XBT_INFO("Auto-setting surf/nthreads to %d",nthreads);
+ }
+
+#ifdef CONTEXT_THREADS
+ xbt_parmap_destroy(surf_parmap);
+ surf_parmap = NULL;
+#endif
+
+ if (nthreads > 1) {
+#ifdef CONTEXT_THREADS
+ surf_parmap = xbt_parmap_new(nthreads, XBT_PARMAP_DEFAULT);
+#else
+ THROWF(arg_error, 0, "Cannot activate parallel threads in Surf: your architecture does not support threads");
+#endif
+ }
+
+ surf_nthreads = nthreads;
+}