+++ /dev/null
-/* Copyright (c) 2004-2013. The SimGrid Team.
- * All rights reserved. */
-
-/* This program is free software; you can redistribute it and/or modify it
- * under the terms of the license (GNU LGPL) which comes with this package. */
-
-#include "surf_private.h"
-#include "xbt/module.h"
-#include "mc/mc.h"
-#include "simix/smx_host_private.h"
-#include "surf/surf_resource.h"
-#include "xbt/xbt_os_thread.h"
-#include "simgrid/sg_config.h"
-
-#include <ctype.h>
-
-XBT_LOG_NEW_CATEGORY(surf, "All SURF categories");
-XBT_LOG_NEW_DEFAULT_SUBCATEGORY(surf_kernel, surf,
- "Logging specific to SURF (kernel)");
-
-/* Additional declarations for Windows portability. */
-
-#ifndef MAX_DRIVE
-#define MAX_DRIVE 26
-#endif
-
-#ifdef _XBT_WIN32
-#include <windows.h>
-static const char *disk_drives_letter_table[MAX_DRIVE] = {
- "A:\\",
- "B:\\",
- "C:\\",
- "D:\\",
- "E:\\",
- "F:\\",
- "G:\\",
- "H:\\",
- "I:\\",
- "J:\\",
- "K:\\",
- "L:\\",
- "M:\\",
- "N:\\",
- "O:\\",
- "P:\\",
- "Q:\\",
- "R:\\",
- "S:\\",
- "T:\\",
- "U:\\",
- "V:\\",
- "W:\\",
- "X:\\",
- "Y:\\",
- "Z:\\"
-};
-#endif /* #ifdef _XBT_WIN32 */
-
-/*
- * Returns the initial path. On Windows the initial path is
- * the current directory for the current process in the other
- * case the function returns "./" that represents the current
- * directory on Unix/Linux platforms.
- */
-
-const char *__surf_get_initial_path(void)
-{
-
-#ifdef _XBT_WIN32
- unsigned i;
- char current_directory[MAX_PATH + 1] = { 0 };
- unsigned int len = GetCurrentDirectory(MAX_PATH + 1, current_directory);
- char root[4] = { 0 };
-
- if (!len)
- return NULL;
-
- strncpy(root, current_directory, 3);
-
- for (i = 0; i < MAX_DRIVE; i++) {
- if (toupper(root[0]) == disk_drives_letter_table[i][0])
- return disk_drives_letter_table[i];
- }
-
- return NULL;
-#else
- return "./";
-#endif
-}
-
-/* The __surf_is_absolute_file_path() returns 1 if
- * file_path is a absolute file path, in the other
- * case the function returns 0.
- */
-int __surf_is_absolute_file_path(const char *file_path)
-{
-#ifdef _XBT_WIN32
- WIN32_FIND_DATA wfd = { 0 };
- HANDLE hFile = FindFirstFile(file_path, &wfd);
-
- if (INVALID_HANDLE_VALUE == hFile)
- return 0;
-
- FindClose(hFile);
- return 1;
-#else
- return (file_path[0] == '/');
-#endif
-}
-
-double NOW = 0;
-
-/* model_list_invoke contains only surf_workstation and surf_vm_workstation.
- * The callback functions of cpu_model and network_model will be called from
- * those of these workstation models. */
-xbt_dynar_t model_list = NULL; /* for destroying all models correctly */
-xbt_dynar_t model_list_invoke = NULL; /* for invoking callbacks */
-tmgr_history_t history = NULL;
-lmm_system_t maxmin_system = NULL;
-xbt_dynar_t surf_path = NULL;
-xbt_dynar_t host_that_restart = NULL;
-xbt_dict_t watched_hosts_lib;
-
-/* Don't forget to update the option description in smx_config when you change this */
-s_surf_model_description_t surf_network_model_description[] = {
- {"LV08",
- "Realistic network analytic model (slow-start modeled by multiplying latency by 10.4, bandwidth by .92; bottleneck sharing uses a payload of S=8775 for evaluating RTT). ",
- surf_network_model_init_LegrandVelho},
- {"Constant",
- "Simplistic network model where all communication take a constant time (one second). This model provides the lowest realism, but is (marginally) faster.",
- surf_network_model_init_Constant},
- {"SMPI",
- "Realistic network model specifically tailored for HPC settings (accurate modeling of slow start with correction factors on three intervals: < 1KiB, < 64 KiB, >= 64 KiB)",
- surf_network_model_init_SMPI},
- {"CM02",
- "Legacy network analytic model (Very similar to LV08, but without corrective factors. The timings of small messages are thus poorly modeled).",
- surf_network_model_init_CM02},
-#ifdef HAVE_GTNETS
- {"GTNets",
- "Network pseudo-model using the GTNets simulator instead of an analytic model",
- surf_network_model_init_GTNETS},
-#endif
-#ifdef HAVE_NS3
- {"NS3",
- "Network pseudo-model using the NS3 tcp model instead of an analytic model",
- surf_network_model_init_NS3},
-#endif
- {"Reno",
- "Model from Steven H. Low using lagrange_solve instead of lmm_solve (experts only; check the code for more info).",
- surf_network_model_init_Reno},
- {"Reno2",
- "Model from Steven H. Low using lagrange_solve instead of lmm_solve (experts only; check the code for more info).",
- surf_network_model_init_Reno2},
- {"Vegas",
- "Model from Steven H. Low using lagrange_solve instead of lmm_solve (experts only; check the code for more info).",
- surf_network_model_init_Vegas},
- {NULL, NULL, NULL} /* this array must be NULL terminated */
-};
-
-s_surf_model_description_t surf_cpu_model_description[] = {
- {"Cas01",
- "Simplistic CPU model (time=size/power).",
- surf_cpu_model_init_Cas01},
- {NULL, NULL, NULL} /* this array must be NULL terminated */
-};
-
-s_surf_model_description_t surf_workstation_model_description[] = {
- {"default",
- "Default workstation model. Currently, CPU:Cas01 and network:LV08 (with cross traffic enabled)",
- surf_workstation_model_init_current_default},
- {"compound",
- "Workstation model that is automatically chosen if you change the network and CPU models",
- surf_workstation_model_init_compound},
- {"ptask_L07", "Workstation model somehow similar to Cas01+CM02 but allowing parallel tasks",
- surf_workstation_model_init_ptask_L07},
- {NULL, NULL, NULL} /* this array must be NULL terminated */
-};
-
-s_surf_model_description_t surf_optimization_mode_description[] = {
- {"Lazy",
- "Lazy action management (partial invalidation in lmm + heap in action remaining).",
- NULL},
- {"TI",
- "Trace integration. Highly optimized mode when using availability traces (only available for the Cas01 CPU model for now).",
- NULL},
- {"Full",
- "Full update of remaining and variables. Slow but may be useful when debugging.",
- NULL},
- {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 */
-};
-
-/* ********************************************************************* */
-/* TUTORIAL: New model */
-s_surf_model_description_t surf_new_model_description[] = {
- {"default",
- "Tutorial model.",
- surf_new_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 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)
-{
- int i;
- printf("Long description of the %s models accepted by this simulator:\n",
- category);
- for (i = 0; table[i].name; i++)
- printf(" %s: %s\n", table[i].name, table[i].description);
-}
-
-int find_model_description(s_surf_model_description_t * table,
- const char *name)
-{
- int i;
- char *name_list = NULL;
-
- for (i = 0; table[i].name; i++)
- if (!strcmp(name, table[i].name)) {
- return i;
- }
- if (!table[0].name)
- xbt_die("No model is valid! This is a bug.");
- name_list = xbt_strdup(table[0].name);
- for (i = 1; table[i].name; i++) {
- name_list =
- xbt_realloc(name_list,
- strlen(name_list) + strlen(table[i].name) + 3);
- strcat(name_list, ", ");
- strcat(name_list, table[i].name);
- }
- xbt_die("Model '%s' is invalid! Valid models are: %s.", name, name_list);
- return -1;
-}
-
-double generic_maxmin_share_resources(xbt_swag_t running_actions,
- size_t offset,
- lmm_system_t sys,
- void (*solve) (lmm_system_t))
-{
- surf_action_t action = NULL;
- double min = -1;
- double value = -1;
-#define VARIABLE(action) (*((lmm_variable_t*)(((char *) (action)) + (offset))))
-
- solve(sys);
-
- xbt_swag_foreach(action, running_actions) {
- value = lmm_variable_getvalue(VARIABLE(action));
- if ((value > 0) || (action->max_duration >= 0))
- break;
- }
-
- if (!action)
- return -1.0;
-
- if (value > 0) {
- if (action->remains > 0)
- min = action->remains / value;
- else
- min = 0.0;
- if ((action->max_duration >= 0) && (action->max_duration < min))
- min = action->max_duration;
- } else
- min = action->max_duration;
-
-
- for (action = xbt_swag_getNext(action, running_actions->offset);
- action;
- action = xbt_swag_getNext(action, running_actions->offset)) {
- value = lmm_variable_getvalue(VARIABLE(action));
- if (value > 0) {
- if (action->remains > 0)
- value = action->remains / value;
- else
- value = 0.0;
- if (value < min) {
- min = value;
- XBT_DEBUG("Updating min (value) with %p: %f", action, min);
- }
- }
- if ((action->max_duration >= 0) && (action->max_duration < min)) {
- min = action->max_duration;
- XBT_DEBUG("Updating min (duration) with %p: %f", action, min);
- }
- }
- XBT_DEBUG("min value : %f", min);
-
-#undef VARIABLE
- return min;
-}
-
-double generic_share_resources_lazy(double now, surf_model_t model)
-{
- surf_action_lmm_t action = NULL;
- double min = -1;
- double value;
-
- XBT_DEBUG
- ("Before share resources, the size of modified actions set is %d",
- xbt_swag_size(model->model_private->modified_set));
-
- lmm_solve(model->model_private->maxmin_system);
-
- XBT_DEBUG
- ("After share resources, The size of modified actions set is %d",
- xbt_swag_size(model->model_private->modified_set));
-
- while((action = xbt_swag_extract(model->model_private->modified_set))) {
- int max_dur_flag = 0;
-
- if (action->generic_action.state_set !=
- model->states.running_action_set)
- continue;
-
- /* bogus priority, skip it */
- if (action->generic_action.priority <= 0)
- continue;
-
- generic_update_action_remaining_lazy(action,now);
-
- min = -1;
- value = lmm_variable_getvalue(action->variable);
- if (value > 0) {
- if (action->generic_action.remains > 0) {
- value = action->generic_action.remains / value;
- min = now + value;
- } else {
- value = 0.0;
- min = now;
- }
- }
-
- if ((action->generic_action.max_duration != NO_MAX_DURATION)
- && (min == -1
- || action->generic_action.start +
- action->generic_action.max_duration < min)) {
- min = action->generic_action.start +
- action->generic_action.max_duration;
- max_dur_flag = 1;
- }
-
- XBT_DEBUG("Action(%p) Start %f Finish %f Max_duration %f", action,
- action->generic_action.start, now + value,
- action->generic_action.max_duration);
-
- if (min != -1) {
- surf_action_lmm_heap_remove(model->model_private->action_heap,action);
- surf_action_lmm_heap_insert(model->model_private->action_heap,action, min, max_dur_flag ? MAX_DURATION : NORMAL);
- XBT_DEBUG("Insert at heap action(%p) min %f now %f", action, min,
- now);
- } else DIE_IMPOSSIBLE;
- }
-
- //hereafter must have already the min value for this resource model
- if (xbt_heap_size(model->model_private->action_heap) > 0)
- min = xbt_heap_maxkey(model->model_private->action_heap) - now;
- else
- min = -1;
-
- XBT_DEBUG("The minimum with the HEAP %f", min);
-
- return min;
-}
-static XBT_INLINE void routing_asr_host_free(void *p)
-{
- sg_routing_edge_t elm = p;
- free(elm->name);
- xbt_free(elm);
-}
-
-static XBT_INLINE void routing_asr_prop_free(void *p)
-{
- xbt_dict_t elm = p;
- xbt_dict_free(&elm);
-}
-
-void sg_version(int *ver_major,int *ver_minor,int *ver_patch) {
- *ver_major = SIMGRID_VERSION_MAJOR;
- *ver_minor = SIMGRID_VERSION_MINOR;
- *ver_patch = SIMGRID_VERSION_PATCH;
-}
-
-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();
- storage_lib = xbt_lib_new();
- storage_type_lib = xbt_lib_new();
- watched_hosts_lib = xbt_dict_new_homogeneous(NULL);
-
- XBT_DEBUG("Add routing levels");
- ROUTING_HOST_LEVEL = xbt_lib_add_level(host_lib,routing_asr_host_free);
- ROUTING_ASR_LEVEL = xbt_lib_add_level(as_router_lib,routing_asr_host_free);
- ROUTING_PROP_ASR_LEVEL = xbt_lib_add_level(as_router_lib,routing_asr_prop_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_init(argc, argv);
- if (!model_list)
- model_list = xbt_dynar_new(sizeof(surf_model_private_t), NULL);
- if (!model_list_invoke)
- model_list_invoke = xbt_dynar_new(sizeof(surf_model_private_t), NULL);
- if (!history)
- history = tmgr_history_new();
-
-#ifdef HAVE_TRACING
- TRACE_add_start_function(TRACE_surf_alloc);
- TRACE_add_end_function(TRACE_surf_release);
-#endif
-
- sg_config_init(argc, argv);
-
- surf_action_init();
- if (MC_is_active())
- MC_memory_init();
-}
-
-#ifdef _XBT_WIN32
-# define FILE_DELIM "\\"
-#else
-# define FILE_DELIM "/" /* FIXME: move to better location */
-#endif
-
-FILE *surf_fopen(const char *name, const char *mode)
-{
- unsigned int cpt;
- char *path_elm = NULL;
- char *buff;
- FILE *file = NULL;
-
- xbt_assert(name);
-
- if (__surf_is_absolute_file_path(name)) /* don't mess with absolute file names */
- return fopen(name, mode);
-
- /* search relative files in the path */
- xbt_dynar_foreach(surf_path, cpt, path_elm) {
- buff = bprintf("%s" FILE_DELIM "%s", path_elm, name);
- file = fopen(buff, mode);
- free(buff);
-
- if (file)
- return file;
- }
- return NULL;
-}
-
-void surf_exit(void)
-{
- unsigned int iter;
- surf_model_t model = NULL;
-
-#ifdef HAVE_TRACING
- TRACE_end(); /* Just in case it was not called by the upper
- * layer (or there is no upper layer) */
-#endif
-
- sg_config_finalize();
-
- xbt_dynar_foreach(model_list, iter, model)
- model->model_private->finalize(model);
- xbt_dynar_free(&model_list);
-
- xbt_dynar_free(&model_list_invoke);
-
- routing_exit();
-
- if (maxmin_system) {
- lmm_system_free(maxmin_system);
- maxmin_system = NULL;
- }
- if (history) {
- tmgr_history_free(history);
- history = NULL;
- }
- surf_action_exit();
-
-#ifdef CONTEXT_THREADS
- xbt_parmap_destroy(surf_parmap);
- xbt_free(surf_mins);
- surf_mins = NULL;
-#endif
- xbt_dynar_free(&host_that_restart);
- 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);
-
- xbt_dict_free(&watched_hosts_lib);
-
- tmgr_finalize();
- surf_parse_lex_destroy();
- surf_parse_free_callbacks();
-
- NOW = 0; /* Just in case the user plans to restart the simulation afterward */
-}
-
-void surf_presolve(void)
-{
- double next_event_date = -1.0;
- tmgr_trace_event_t event = NULL;
- double value = -1.0;
- surf_resource_t resource = NULL;
- surf_model_t model = NULL;
- unsigned int iter;
-
- XBT_DEBUG
- ("First Run! Let's \"purge\" events and put models in the right state");
- while ((next_event_date = tmgr_history_next_date(history)) != -1.0) {
- if (next_event_date > NOW)
- break;
- while ((event =
- tmgr_history_get_next_event_leq(history, next_event_date,
- &value,
- (void **) &resource))) {
- if (value >= 0){
- resource->model->model_private->update_resource_state(resource,
- event, value,
- NOW);
- }
- }
- }
-
- /* FIXME: see what is check_update_action_state(). if necessary, use model_list_invoke. */
- xbt_dynar_foreach(model_list, iter, model)
- model->model_private->update_actions_state(model, NOW, 0.0);
-}
-
-double surf_solve(double max_date)
-{
-
- min = -1.0; /* duration */
- double next_event_date = -1.0;
- double model_next_action_end = -1.0;
- double value = -1.0;
- surf_resource_t resource = NULL;
- surf_model_t model = NULL;
- tmgr_trace_event_t event = NULL;
- unsigned int iter;
-
- if(!host_that_restart)
- host_that_restart = xbt_dynar_new(sizeof(char*), NULL);
-
- if (max_date != -1.0 && max_date != NOW) {
- min = max_date - NOW;
- }
-
- XBT_DEBUG("Looking for next action end for all models except NS3");
-
- if (surf_mins == NULL) {
- surf_mins = xbt_new(double, xbt_dynar_length(model_list_invoke));
- }
- surf_min_index = 0;
-
- /* sequential version */
- xbt_dynar_foreach(model_list_invoke, iter, model) {
- surf_share_resources(model);
- }
- unsigned i;
- for (i = 0; i < xbt_dynar_length(model_list_invoke); i++) {
- if ((min < 0.0 || surf_mins[i] < min)
- && surf_mins[i] >= 0.0) {
- min = surf_mins[i];
- }
- }
-
- XBT_DEBUG("Min for resources (remember that NS3 don't update that value) : %f", min);
-
- XBT_DEBUG("Looking for next trace event");
-
- do {
- XBT_DEBUG("Next TRACE event : %f", next_event_date);
-
- next_event_date = tmgr_history_next_date(history);
-
- if(surf_network_model->name && !strcmp(surf_network_model->name,"network NS3")){
- if(next_event_date!=-1.0 && min!=-1.0) {
- min = MIN(next_event_date - NOW, min);
- } else{
- min = MAX(next_event_date - NOW, min);
- }
-
- XBT_DEBUG("Run for network at most %f", min);
- // run until min or next flow
- model_next_action_end = surf_network_model->model_private->share_resources(surf_network_model, min);
-
- XBT_DEBUG("Min for network : %f", model_next_action_end);
- if(model_next_action_end>=0.0)
- min = model_next_action_end;
- }
-
- if (next_event_date < 0.0) {
- XBT_DEBUG("no next TRACE event. Stop searching for it");
- break;
- }
-
- if ((min == -1.0) || (next_event_date > NOW + min)) break;
-
- XBT_DEBUG("Updating models (min = %g, NOW = %g, next_event_date = %g)",min, NOW, next_event_date);
- while ((event =
- tmgr_history_get_next_event_leq(history, next_event_date,
- &value,
- (void **) &resource))) {
- if (resource->model->model_private->resource_used(resource) ||
- xbt_dict_get_or_null(watched_hosts_lib,resource->name)
- ) {
- min = next_event_date - NOW;
- XBT_DEBUG
- ("This event will modify model state. Next event set to %f",
- min);
- }
- /* update state of model_obj according to new value. Does not touch lmm.
- It will be modified if needed when updating actions */
- XBT_DEBUG("Calling update_resource_state for resource %s with min %f",
- resource->name, min);
-
- resource->model->model_private->update_resource_state(resource,
- event, value,
- next_event_date);
- }
- } while (1);
-
- /* FIXME: Moved this test to here to avoid stopping simulation if there are actions running on cpus and all cpus are with availability = 0.
- * This may cause an infinite loop if one cpu has a trace with periodicity = 0 and the other a trace with periodicity > 0.
- * The options are: all traces with same periodicity(0 or >0) or we need to change the way how the events are managed */
- if (min == -1.0) {
- XBT_DEBUG("No next event at all. Bail out now.");
- return -1.0;
- }
-
- XBT_DEBUG("Duration set to %f", min);
-
- NOW = NOW + min;
- /* FIXME: model_list or model_list_invoke? revisit here later */
- /* sequential version */
- xbt_dynar_foreach(model_list, iter, model) {
- surf_update_actions_state(model);
- }
-
-#ifdef HAVE_TRACING
- TRACE_paje_dump_buffer (0);
-#endif
-
- return min;
-}
-
-XBT_INLINE double surf_get_clock(void)
-{
- return NOW;
-}
-
-static void surf_share_resources(surf_model_t model)
-{
- double next_action_end = -1.0;
- int i = __sync_fetch_and_add(&surf_min_index, 1);
- if (strcmp(model->name,"network NS3")) {
- XBT_DEBUG("Running for Resource [%s]", model->name);
- next_action_end = model->model_private->share_resources(model, NOW);
- XBT_DEBUG("Resource [%s] : next action end = %f",
- model->name, next_action_end);
- }
- surf_mins[i] = next_action_end;
-}
-
-static void surf_update_actions_state(surf_model_t model)
-{
- model->model_private->update_actions_state(model, NOW, min);
-}
-
