1 /* Copyright (c) 2016-2021. The SimGrid Team.
2 * All rights reserved. */
4 /* This program is free software; you can redistribute it and/or modify it
5 * under the terms of the license (GNU LGPL) which comes with this package. */
7 #include "smpi_utils.hpp"
9 #include "src/surf/xml/platf_private.hpp"
11 #include "xbt/parse_units.hpp"
12 #include "xbt/sysdep.h"
13 #include "xbt/file.hpp"
14 #include <boost/tokenizer.hpp>
15 #include "smpi_config.hpp"
16 #include "src/simix/smx_private.hpp"
19 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(smpi_utils, smpi, "Logging specific to SMPI (utils)");
21 extern std::string surf_parsed_filename;
22 extern int surf_parse_lineno;
28 double total_benched_time=0;
29 unsigned long total_malloc_size=0;
30 unsigned long total_shared_size=0;
31 unsigned int total_shared_calls=0;
34 unsigned int numcall = 0;
39 F2C* current_handle=0;
41 std::vector<s_smpi_factor_t> parse_factor(const std::string& smpi_coef_string)
43 std::vector<s_smpi_factor_t> smpi_factor;
45 /** Setup the tokenizer that parses the string **/
46 using Tokenizer = boost::tokenizer<boost::char_separator<char>>;
47 boost::char_separator<char> sep(";");
48 boost::char_separator<char> factor_separator(":");
49 Tokenizer tokens(smpi_coef_string, sep);
52 * Iterate over patterns like A:B:C:D;E:F;G:H
53 * These will be broken down into:
58 for (Tokenizer::iterator token_iter = tokens.begin(); token_iter != tokens.end(); ++token_iter) {
59 XBT_DEBUG("token : %s", token_iter->c_str());
60 Tokenizer factor_values(*token_iter, factor_separator);
62 xbt_assert(factor_values.begin() != factor_values.end(), "Malformed radical for smpi factor: '%s'",
63 smpi_coef_string.c_str());
64 unsigned int iteration = 0;
65 for (Tokenizer::iterator factor_iter = factor_values.begin(); factor_iter != factor_values.end(); ++factor_iter) {
68 if (factor_iter == factor_values.begin()) { /* first element */
70 fact.factor = std::stoi(*factor_iter);
71 } catch (const std::invalid_argument&) {
72 throw std::invalid_argument(std::string("Invalid factor in chunk ") + std::to_string(smpi_factor.size() + 1) +
77 fact.values.push_back(
78 xbt_parse_get_time(surf_parsed_filename, surf_parse_lineno, (*factor_iter).c_str(), "smpi factor", ""));
79 } catch (const std::invalid_argument&) {
80 throw std::invalid_argument(std::string("Invalid factor value ") + std::to_string(iteration) + " in chunk " +
81 std::to_string(smpi_factor.size() + 1) + ": " + *factor_iter);
86 smpi_factor.push_back(fact);
87 XBT_DEBUG("smpi_factor:\t%zu : %zu values, first: %f", fact.factor, smpi_factor.size(), fact.values[0]);
89 std::sort(smpi_factor.begin(), smpi_factor.end(), [](const s_smpi_factor_t &pa, const s_smpi_factor_t &pb) {
90 return (pa.factor < pb.factor);
92 for (auto const& fact : smpi_factor) {
93 XBT_DEBUG("smpi_factor:\t%zu : %zu values, first: %f", fact.factor, smpi_factor.size() ,fact.values[0]);
95 smpi_factor.shrink_to_fit();
100 void add_benched_time(double time){
101 total_benched_time += time;
104 void account_malloc_size(size_t size, const char* file, int line){
105 total_malloc_size += size;
106 if(size > max_malloc.size){
107 max_malloc.size = size;
108 max_malloc.line = line;
109 max_malloc.numcall = 1;
110 max_malloc.file = std::string(file);
111 }else if(size == max_malloc.size && max_malloc.line == line && not max_malloc.file.compare(file)){
112 max_malloc.numcall++;
116 void account_shared_size(size_t size){
117 total_shared_size += size;
118 total_shared_calls++;
121 void print_time_analysis(double global_time){
122 if (simgrid::config::get_value<bool>("smpi/display-timing")) {
123 XBT_INFO("Simulated time: %g seconds. \n\n"
124 "The simulation took %g seconds (after parsing and platform setup)\n"
125 "%g seconds were actual computation of the application",
126 SIMIX_get_clock(), global_time , total_benched_time);
127 if (total_benched_time/global_time>=0.75)
128 XBT_INFO("More than 75%% of the time was spent inside the application code.\n"
129 "You may want to use sampling functions or trace replay to reduce this.");
133 void print_memory_analysis()
135 // Put the leaked non-default handles in a vector to sort them by id
136 std::vector<std::pair<unsigned int, smpi::F2C*>> handles;
137 if (simgrid::smpi::F2C::lookup() != nullptr)
138 std::copy_if(simgrid::smpi::F2C::lookup()->begin(), simgrid::smpi::F2C::lookup()->end(),
139 std::back_inserter(handles),
140 [](auto const& entry) { return entry.first >= simgrid::smpi::F2C::get_num_default_handles(); });
142 if (not handles.empty()) {
143 XBT_INFO("Probable memory leaks in your code: SMPI detected %zu unfreed MPI handles : "
144 "display types and addresses (n max) with --cfg=smpi/list-leaks:n.\n"
145 "Running smpirun with -wrapper \"valgrind --leak-check=full\" can provide more information",
147 auto max = static_cast<unsigned long>(simgrid::config::get_value<int>("smpi/list-leaks"));
148 if (max > 0) { // we cannot trust F2C::lookup()->size() > F2C::get_num_default_handles() because some default
149 // handles are already freed at this point
150 std::sort(handles.begin(), handles.end(), [](auto const& a, auto const& b) { return a.first < b.first; });
151 bool truncate = max < handles.size();
154 bool printed_advice=false;
155 for (const auto& p : handles) {
156 if (xbt_log_no_loc || p.second->call_location().empty()) {
157 if (!printed_advice){
158 XBT_INFO("To get more information (location of allocations), compile your code with -trace-call-location flag of smpicc/f90");
161 XBT_INFO("Leaked handle of type %s", p.second->name().c_str());
163 XBT_INFO("Leaked handle of type %s at %s", p.second->name().c_str(), p.second->call_location().c_str());
167 XBT_INFO("(more handle leaks hidden as you wanted to see only %lu of them)", max);
171 if (simgrid::config::get_value<bool>("smpi/display-allocs")) {
172 if(total_malloc_size != 0)
173 XBT_INFO("Memory Usage: Simulated application allocated %lu bytes during its lifetime through malloc/calloc calls.\n"
174 "Largest allocation at once from a single process was %zu bytes, at %s:%d. It was called %u times during the whole simulation.\n"
175 "If this is too much, consider sharing allocations for computation buffers.\n"
176 "This can be done automatically by setting --cfg=smpi/auto-shared-malloc-thresh to the minimum size wanted size (this can alter execution if data content is necessary)\n",
177 total_malloc_size, max_malloc.size, simgrid::xbt::Path(max_malloc.file).get_base_name().c_str(), max_malloc.line, max_malloc.numcall
180 XBT_INFO("Allocations analysis asked, but 0 bytes were allocated through malloc/calloc calls intercepted by SMPI.\n"
181 "Either code is using other ways of allocating memory, or it was built with SMPI_NO_OVERRIDE_MALLOC");
182 if(total_shared_size != 0)
183 XBT_INFO("%lu bytes were automatically shared between processes, in %u calls\n", total_shared_size, total_shared_calls);
187 void set_current_handle(F2C* handle){
188 current_handle=handle;
191 void print_current_handle(){
193 if(current_handle->call_location().empty())
194 XBT_INFO("To get handle location information, pass -trace-call-location flag to smpicc/f90 as well");
196 XBT_INFO("Handle %s was allocated by a call at %s", current_handle->name().c_str(),
197 (char*)(current_handle->call_location().c_str()));
203 } // namespace simgrid