1 /* Copyright (c) 2004-2021. The SimGrid Team. All rights reserved. */
3 /* This program is free software; you can redistribute it and/or modify it
4 * under the terms of the license (GNU LGPL) which comes with this package. */
6 #include "surf_interface.hpp"
8 #include "simgrid/s4u/Engine.hpp"
9 #include "simgrid/sg_config.hpp"
10 #include "src/kernel/resource/profile/FutureEvtSet.hpp"
11 #include "src/kernel/resource/profile/Profile.hpp"
12 #include "src/surf/HostImpl.hpp"
13 #include "src/surf/xml/platf.hpp"
14 #include "src/xbt_modinter.h" /* whether initialization was already done */
15 #include "surf/surf.hpp"
16 #include "xbt/module.h"
25 XBT_LOG_NEW_CATEGORY(surf, "All SURF categories");
26 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(surf_kernel, surf, "Logging specific to SURF (kernel)");
32 std::vector<simgrid::kernel::resource::Model*> all_existing_models; /* to destroy models correctly */
34 simgrid::kernel::profile::FutureEvtSet future_evt_set;
35 std::vector<std::string> surf_path;
37 /** set of hosts for which one want to be notified if they ever restart */
38 std::set<std::string, std::less<>>& watched_hosts() // avoid static initialization order fiasco
40 static std::set<std::string, std::less<>> value;
44 extern std::map<std::string, simgrid::kernel::resource::StorageType*, std::less<>> storage_types;
46 std::vector<surf_model_description_t>* surf_plugin_description = nullptr;
48 static void XBT_ATTRIB_DESTRUCTOR(800) simgrid_free_plugin_description()
50 delete surf_plugin_description;
51 surf_plugin_description = nullptr;
54 XBT_PUBLIC void simgrid_add_plugin_description(const char* name, const char* description, void_f_void_t init_fun)
56 if (not surf_plugin_description)
57 surf_plugin_description = new std::vector<surf_model_description_t>();
58 surf_plugin_description->emplace_back(surf_model_description_t{name, description, init_fun});
61 /* Don't forget to update the option description in smx_config when you change this */
62 const std::vector<surf_model_description_t> surf_network_model_description = {
64 "Realistic network analytic model (slow-start modeled by multiplying latency by 13.01, bandwidth by .97; "
65 "bottleneck sharing uses a payload of S=20537 for evaluating RTT). ",
66 &surf_network_model_init_LegrandVelho},
68 "Simplistic network model where all communication take a constant time (one second). This model "
69 "provides the lowest realism, but is (marginally) faster.",
70 &surf_network_model_init_Constant},
72 "Realistic network model specifically tailored for HPC settings (accurate modeling of slow start with "
73 "correction factors on three intervals: < 1KiB, < 64 KiB, >= 64 KiB)",
74 &surf_network_model_init_SMPI},
75 {"IB", "Realistic network model specifically tailored for HPC settings, with Infiniband contention model",
76 &surf_network_model_init_IB},
78 "Legacy network analytic model (Very similar to LV08, but without corrective factors. The timings of "
79 "small messages are thus poorly modeled).",
80 &surf_network_model_init_CM02},
81 {"ns-3", "Network pseudo-model using the ns-3 tcp model instead of an analytic model",
82 &surf_network_model_init_NS3},
86 void surf_network_model_init_SMPI() {
87 xbt_die("Please activate SMPI support in cmake to use the SMPI network model.");
89 void surf_network_model_init_IB() {
90 xbt_die("Please activate SMPI support in cmake to use the IB network model.");
94 void surf_network_model_init_NS3() {
95 xbt_die("Please activate ns-3 support in cmake and install the dependencies to use the NS3 network model.");
99 const std::vector<surf_model_description_t> surf_cpu_model_description = {
100 {"Cas01", "Simplistic CPU model (time=size/speed).", &surf_cpu_model_init_Cas01},
103 const std::vector<surf_model_description_t> surf_host_model_description = {
104 {"default", "Default host model. Currently, CPU:Cas01 and network:LV08 (with cross traffic enabled)",
105 &surf_host_model_init_current_default},
106 {"compound", "Host model that is automatically chosen if you change the network and CPU models",
107 &surf_host_model_init_compound},
108 {"ptask_L07", "Host model somehow similar to Cas01+CM02 but allowing parallel tasks",
109 &surf_host_model_init_ptask_L07},
112 const std::vector<surf_model_description_t> surf_optimization_mode_description = {
113 {"Lazy", "Lazy action management (partial invalidation in lmm + heap in action remaining).", nullptr},
114 {"TI", "Trace integration. Highly optimized mode when using availability traces (only available for the Cas01 CPU "
117 {"Full", "Full update of remaining and variables. Slow but may be useful when debugging.", nullptr},
120 const std::vector<surf_model_description_t> surf_disk_model_description = {
121 {"default", "Simplistic disk model.", &surf_disk_model_init_default},
124 const std::vector<surf_model_description_t> surf_storage_model_description = {
125 {"default", "Simplistic storage model.", &surf_storage_model_init_default},
130 double surf_get_clock()
135 /* returns whether #file_path is an absolute file path. Surprising, isn't it ? */
136 static bool is_absolute_file_path(const std::string& file_path)
139 WIN32_FIND_DATA wfd = {0};
140 HANDLE hFile = FindFirstFile(file_path.c_str(), &wfd);
142 if (INVALID_HANDLE_VALUE == hFile)
148 return (file_path.c_str()[0] == '/');
152 std::ifstream* surf_ifsopen(const std::string& name)
154 xbt_assert(not name.empty());
156 auto* fs = new std::ifstream();
157 if (is_absolute_file_path(name)) { /* don't mess with absolute file names */
158 fs->open(name.c_str(), std::ifstream::in);
161 /* search relative files in the path */
162 for (auto const& path_elm : surf_path) {
163 std::string buff = path_elm + "/" + name;
164 fs->open(buff.c_str(), std::ifstream::in);
166 if (not fs->fail()) {
167 XBT_DEBUG("Found file at %s", buff.c_str());
175 FILE* surf_fopen(const std::string& name, const char* mode)
177 FILE *file = nullptr;
179 if (is_absolute_file_path(name)) /* don't mess with absolute file names */
180 return fopen(name.c_str(), mode);
182 /* search relative files in the path */
183 for (auto const& path_elm : surf_path) {
184 std::string buff = path_elm + "/" + name;
185 file = fopen(buff.c_str(), mode);
193 /** Displays the long description of all registered models, and quit */
194 void model_help(const char* category, const std::vector<surf_model_description_t>& table)
196 XBT_HELP("Long description of the %s models accepted by this simulator:", category);
197 for (auto const& item : table)
198 XBT_HELP(" %s: %s", item.name, item.description);
201 int find_model_description(const std::vector<surf_model_description_t>& table, const std::string& name)
203 auto pos = std::find_if(table.begin(), table.end(),
204 [&name](const surf_model_description_t& item) { return item.name == name; });
205 if (pos != table.end())
206 return static_cast<int>(std::distance(table.begin(), pos));
209 xbt_die("No model is valid! This is a bug.");
212 std::string name_list;
213 for (auto const& item : table) {
214 name_list += sep + item.name;
218 xbt_die("Model '%s' is invalid! Valid models are: %s.", name.c_str(), name_list.c_str());
223 void surf_init(int *argc, char **argv)
225 if (xbt_initialized > 0)
228 xbt_init(argc, argv);
230 sg_config_init(argc, argv);
235 simgrid::s4u::Engine::shutdown();
236 for (auto const& e : storage_types) {
237 const simgrid::kernel::resource::StorageType* stype = e.second;
238 delete stype->properties;
239 delete stype->model_properties;
243 for (auto const& model : all_existing_models)
249 NOW = 0; /* Just in case the user plans to restart the simulation afterward */