#include "xbt/module.h"
#include "mc/mc.h"
#include "surf/surf_resource.h"
+#include "xbt/xbt_os_thread.h"
XBT_LOG_NEW_DEFAULT_SUBCATEGORY(surf_kernel, surf,
"Logging specific to SURF (kernel)");
-/* Additional declarations for Windows potability. */
+/* Additional declarations for Windows portability. */
#ifndef MAX_DRIVE
#define MAX_DRIVE 26
{NULL, NULL, NULL} /* this array must be NULL terminated */
};
+s_surf_model_description_t surf_storage_model_description[] = {
+ {"default",
+ "Simplistic storage model.",
+ surf_storage_model_init_default},
+ {NULL, NULL, NULL} /* this array must be NULL terminated */
+};
+
+#ifdef CONTEXT_THREADS
+static xbt_parmap_t surf_parmap = NULL; /* parallel map on models */
+#endif
+
+static int surf_nthreads = 1; /* number of threads of the parmap (1 means no parallelism) */
+static double *surf_mins = NULL; /* return value of share_resources for each model */
+static int surf_min_index; /* current index in surf_mins */
+static double min; /* duration determined by surf_solve */
+
+static void surf_share_resources(surf_model_t model);
+static void surf_update_actions_state(surf_model_t model);
+
/** Displays the long description of all registered models, and quit */
void model_help(const char *category, s_surf_model_description_t * table)
{
void surf_init(int *argc, char **argv)
{
- XBT_DEBUG("Create all Libs");
- host_lib = xbt_lib_new();
- link_lib = xbt_lib_new();
- as_router_lib = xbt_lib_new();
-
- XBT_DEBUG("ADD ROUTING LEVEL");
- ROUTING_HOST_LEVEL = xbt_lib_add_level(host_lib,xbt_free);
- ROUTING_ASR_LEVEL = xbt_lib_add_level(as_router_lib,xbt_free);
-
- XBT_DEBUG("ADD SURF LEVELS");
- SURF_CPU_LEVEL = xbt_lib_add_level(host_lib,surf_resource_free);
- SURF_WKS_LEVEL = xbt_lib_add_level(host_lib,surf_resource_free);
- SURF_LINK_LEVEL = xbt_lib_add_level(link_lib,surf_resource_free);
+ XBT_DEBUG("Create all Libs");
+ host_lib = xbt_lib_new();
+ link_lib = xbt_lib_new();
+ as_router_lib = xbt_lib_new();
+ storage_lib = xbt_lib_new();
+ storage_type_lib = xbt_lib_new();
+
+ XBT_DEBUG("ADD ROUTING LEVEL");
+ ROUTING_HOST_LEVEL = xbt_lib_add_level(host_lib,xbt_free);
+ ROUTING_ASR_LEVEL = xbt_lib_add_level(as_router_lib,xbt_free);
+ ROUTING_STORAGE_LEVEL = xbt_lib_add_level(storage_lib,xbt_free);
+ ROUTING_STORAGE_HOST_LEVEL = xbt_lib_add_level(storage_lib,routing_storage_host_free);
+ ROUTING_STORAGE_TYPE_LEVEL = xbt_lib_add_level(storage_type_lib,routing_storage_type_free);
+
+ XBT_DEBUG("ADD SURF LEVELS");
+ SURF_CPU_LEVEL = xbt_lib_add_level(host_lib,surf_resource_free);
+ SURF_WKS_LEVEL = xbt_lib_add_level(host_lib,surf_resource_free);
+ SURF_LINK_LEVEL = xbt_lib_add_level(link_lib,surf_resource_free);
+ SURF_STORAGE_LEVEL = xbt_lib_add_level(storage_lib,surf_resource_free);
/* Connect our log channels: that must be done manually under windows */
XBT_LOG_CONNECT(surf_cpu, surf);
}
surf_action_exit();
+#ifdef CONTEXT_THREADS
+ xbt_parmap_destroy(surf_parmap);
+ xbt_free(surf_mins);
+ surf_mins = NULL;
+#endif
+
xbt_dynar_free(&surf_path);
xbt_lib_free(&host_lib);
xbt_lib_free(&link_lib);
xbt_lib_free(&as_router_lib);
-
+ xbt_lib_free(&storage_lib);
+ xbt_lib_free(&storage_type_lib);
tmgr_finalize();
surf_parse_lex_destroy();
double surf_solve(double max_date)
{
- double min = -1.0; /* duration */
+ min = -1.0; /* duration */
double next_event_date = -1.0;
double model_next_action_end = -1.0;
double value = -1.0;
}
XBT_DEBUG("Looking for next action end for all models except NS3");
- xbt_dynar_foreach(model_list, iter, model) {
- if(strcmp(model->name,"network NS3") ){
- XBT_DEBUG("Running for Resource [%s]", model->name);
- model_next_action_end = model->model_private->share_resources(NOW);
- XBT_DEBUG("Resource [%s] : next action end = %f",
- model->name, model_next_action_end);
- if (((min < 0.0) || (model_next_action_end < min))
- && (model_next_action_end >= 0.0))
- min = model_next_action_end;
+
+ if (surf_mins == NULL) {
+ surf_mins = xbt_new(double, xbt_dynar_length(model_list));
+ }
+ surf_min_index = 0;
+
+
+ if (surf_get_nthreads() > 1) {
+ /* parallel version */
+#ifdef CONTEXT_THREADS
+ xbt_parmap_apply(surf_parmap, (void_f_pvoid_t) surf_share_resources, model_list);
+#endif
+ }
+ else {
+ /* sequential version */
+ xbt_dynar_foreach(model_list, iter, model) {
+ surf_share_resources(model);
+ }
+ }
+
+ unsigned i;
+ for (i = 0; i < xbt_dynar_length(model_list); i++) {
+ if ((min < 0.0 || surf_mins[i] < min)
+ && surf_mins[i] >= 0.0) {
+ min = surf_mins[i];
}
}
NOW = NOW + min;
- xbt_dynar_foreach(model_list, iter, model)
- model->model_private->update_actions_state(NOW, min);
+ 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
TRACE_paje_dump_buffer (0);
{
return NOW;
}
+
+static void surf_share_resources(surf_model_t model)
+{
+ if (strcmp(model->name,"network NS3")) {
+ XBT_DEBUG("Running for Resource [%s]", model->name);
+ double next_action_end = model->model_private->share_resources(NOW);
+ XBT_DEBUG("Resource [%s] : next action end = %f",
+ model->name, next_action_end);
+ int i = __sync_fetch_and_add(&surf_min_index, 1);
+ surf_mins[i] = next_action_end;
+ }
+}
+
+static void surf_update_actions_state(surf_model_t model)
+{
+ 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;
+}
