-/* Copyright (c) 2007-2019. The SimGrid Team. All rights reserved. */
+/* Copyright (c) 2007-2022. 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 "mc/mc.h"
+#include "simgrid/Exception.hpp"
+#include "simgrid/plugins/file_system.h"
#include "simgrid/s4u/Engine.hpp"
#include "smpi_coll.hpp"
+#include "smpi_config.hpp"
#include "smpi_f2c.hpp"
#include "smpi_host.hpp"
+#include "src/kernel/EngineImpl.hpp"
#include "src/kernel/activity/CommImpl.hpp"
-#include "src/simix/smx_private.hpp"
#include "src/smpi/include/smpi_actor.hpp"
#include "xbt/config.hpp"
+#include "xbt/file.hpp"
#include <algorithm>
-#include <cfloat> /* DBL_MAX */
+#include <array>
+#include <boost/algorithm/string.hpp> /* split */
+#include <boost/tokenizer.hpp>
+#include <cerrno>
#include <cinttypes>
#include <cstdint> /* intmax_t */
+#include <cstring> /* strerror */
#include <dlfcn.h>
#include <fcntl.h>
#include <fstream>
+#include <sys/stat.h>
-#if not defined(__APPLE__)
-#include <link.h>
+#if SG_HAVE_SENDFILE
+#include <sys/sendfile.h>
#endif
-#if defined(__APPLE__)
-# include <AvailabilityMacros.h>
-# ifndef MAC_OS_X_VERSION_10_12
-# define MAC_OS_X_VERSION_10_12 101200
-# endif
-# define HAVE_WORKING_MMAP (MAC_OS_X_VERSION_MIN_REQUIRED >= MAC_OS_X_VERSION_10_12)
-#elif defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
-# define HAVE_WORKING_MMAP 0
-#else
-# define HAVE_WORKING_MMAP 1
+#if HAVE_PAPI
+#include "papi.h"
#endif
-#if SG_HAVE_SENDFILE
-#include <sys/sendfile.h>
+#if not defined(__APPLE__) && not defined(__HAIKU__)
+#include <link.h>
#endif
XBT_LOG_NEW_DEFAULT_SUBCATEGORY(smpi_kernel, smpi, "Logging specific to SMPI (kernel)");
-#include <boost/tokenizer.hpp>
-#include <boost/algorithm/string.hpp> /* trim_right / trim_left */
#if SMPI_IFORT
extern "C" void for_rtl_init_ (int *, char **);
* See https://www.akkadia.org/drepper/dsohowto.pdf
* and https://lists.freebsd.org/pipermail/freebsd-current/2016-March/060284.html
*/
-#if !defined(RTLD_DEEPBIND) || HAVE_SANITIZER_ADDRESS || HAVE_SANITIZER_THREAD
+#if !RTLD_DEEPBIND || HAVE_SANITIZER_ADDRESS || HAVE_SANITIZER_THREAD
#define WANT_RTLD_DEEPBIND 0
#else
#define WANT_RTLD_DEEPBIND RTLD_DEEPBIND
#endif
#if HAVE_PAPI
-#include "papi.h"
-std::string papi_default_config_name = "default";
-std::map</* computation unit name */ std::string, papi_process_data> units2papi_setup;
+std::map</* computation unit name */ std::string, papi_process_data, std::less<>> units2papi_setup;
#endif
-using simgrid::s4u::Actor;
-using simgrid::s4u::ActorPtr;
std::unordered_map<std::string, double> location2speedup;
-static std::map</*process_id*/ ActorPtr, simgrid::smpi::ActorExt*> process_data;
-int process_count = 0;
static int smpi_exit_status = 0;
-int smpi_universe_size = 0;
-extern double smpi_total_benched_time;
xbt_os_timer_t global_timer;
static std::vector<std::string> privatize_libs_paths;
-/**
- * Setting MPI_COMM_WORLD to MPI_COMM_UNINITIALIZED (it's a variable)
- * is important because the implementation of MPI_Comm checks
- * "this == MPI_COMM_UNINITIALIZED"? If yes, it uses smpi_process()->comm_world()
- * instead of "this".
- * This is basically how we only have one global variable but all processes have
- * different communicators (the one their SMPI instance uses).
- *
- * See smpi_comm.cpp and the functions therein for details.
- */
-MPI_Comm MPI_COMM_WORLD = MPI_COMM_UNINITIALIZED;
-MPI_Errhandler *MPI_ERRORS_RETURN = nullptr;
-MPI_Errhandler *MPI_ERRORS_ARE_FATAL = nullptr;
-MPI_Errhandler *MPI_ERRHANDLER_NULL = nullptr;
+
// No instance gets manually created; check also the smpirun.in script as
// this default name is used there as well (when the <actor> tag is generated).
static const std::string smpi_default_instance_name("smpirun");
-static simgrid::config::Flag<double> smpi_init_sleep(
- "smpi/init", "Time to inject inside a call to MPI_Init", 0.0);
-void (*smpi_comm_copy_data_callback) (smx_activity_t, void*, size_t) = &smpi_comm_copy_buffer_callback;
+static simgrid::config::Flag<std::string>
+ smpi_hostfile("smpi/hostfile",
+ "Classical MPI hostfile containing list of machines to dispatch "
+ "the processes, one per line",
+ "");
-int smpi_process_count()
-{
- return process_count;
-}
+static simgrid::config::Flag<std::string> smpi_replay("smpi/replay",
+ "Replay a trace instead of executing the application", "");
+
+static simgrid::config::Flag<int> smpi_np("smpi/np", "Number of processes to be created", 0);
+
+static simgrid::config::Flag<int> smpi_map("smpi/map", "Display the mapping between nodes and processes", 0);
+
+std::function<void(simgrid::kernel::activity::CommImpl*, void*, size_t)> smpi_comm_copy_data_callback =
+ &smpi_comm_copy_buffer_callback;
simgrid::smpi::ActorExt* smpi_process()
{
- ActorPtr me = Actor::self();
+ simgrid::s4u::ActorPtr me = simgrid::s4u::Actor::self();
if (me == nullptr) // This happens sometimes (eg, when linking against NS3 because it pulls openMPI...)
return nullptr;
- return process_data.at(me);
+ return me->extension<simgrid::smpi::ActorExt>();
}
-simgrid::smpi::ActorExt* smpi_process_remote(ActorPtr actor)
+simgrid::smpi::ActorExt* smpi_process_remote(simgrid::s4u::ActorPtr actor)
{
- return process_data.at(actor);
+ if (actor.get() == nullptr)
+ return nullptr;
+ return actor->extension<simgrid::smpi::ActorExt>();
}
MPI_Comm smpi_process_comm_self(){
return smpi_process()->comm_self();
}
-void smpi_process_init(int *argc, char ***argv){
- simgrid::smpi::ActorExt::init();
+MPI_Info smpi_process_info_env(){
+ return smpi_process()->info_env();
}
void * smpi_process_get_user_data(){
- return Actor::self()->get_impl()->get_user_data();
+ return simgrid::s4u::Actor::self()->get_data<void>();
}
void smpi_process_set_user_data(void *data){
- Actor::self()->get_impl()->set_user_data(data);
+ simgrid::s4u::Actor::self()->set_data(data);
}
-
-int smpi_global_size()
+void smpi_comm_set_copy_data_callback(void (*callback) (smx_activity_t, void*, size_t))
{
- char *value = getenv("SMPI_GLOBAL_SIZE");
- xbt_assert(value,"Please set env var SMPI_GLOBAL_SIZE to the expected number of processes.");
-
- return xbt_str_parse_int(value, "SMPI_GLOBAL_SIZE contains a non-numerical value: %s");
+ smpi_comm_copy_data_callback = callback;
}
-void smpi_comm_set_copy_data_callback(void (*callback) (smx_activity_t, void*, size_t))
+static void memcpy_private(void* dest, const void* src, const std::vector<std::pair<size_t, size_t>>& private_blocks)
{
- smpi_comm_copy_data_callback = callback;
+ for (auto const& [block_begin, block_end] : private_blocks)
+ memcpy((uint8_t*)dest + block_begin, (uint8_t*)src + block_begin, block_end - block_begin);
}
-static void memcpy_private(void* dest, const void* src, std::vector<std::pair<size_t, size_t>>& private_blocks)
+static void check_blocks(const std::vector<std::pair<size_t, size_t>>& private_blocks, size_t buff_size)
{
- for (auto const& block : private_blocks)
- memcpy((uint8_t*)dest+block.first, (uint8_t*)src+block.first, block.second-block.first);
+ for (auto const& [block_begin, block_end] : private_blocks)
+ xbt_assert(block_begin <= block_end && block_end <= buff_size, "Oops, bug in shared malloc.");
}
-static void check_blocks(std::vector<std::pair<size_t, size_t>> &private_blocks, size_t buff_size) {
- for (auto const& block : private_blocks)
- xbt_assert(block.first <= block.second && block.second <= buff_size, "Oops, bug in shared malloc.");
+static void smpi_cleanup_comm_after_copy(simgrid::kernel::activity::CommImpl* comm, void* buff){
+ if (comm->is_detached()) {
+ // if this is a detached send, the source buffer was duplicated by SMPI
+ // sender to make the original buffer available to the application ASAP
+ xbt_free(buff);
+ //It seems that the request is used after the call there this should be free somewhere else but where???
+ //xbt_free(comm->comm.src_data);// inside SMPI the request is kept inside the user data and should be free
+ comm->src_buff_ = nullptr;
+ }
}
-void smpi_comm_copy_buffer_callback(smx_activity_t synchro, void *buff, size_t buff_size)
+void smpi_comm_copy_buffer_callback(simgrid::kernel::activity::CommImpl* comm, void* buff, size_t buff_size)
{
- simgrid::kernel::activity::CommImplPtr comm =
- boost::dynamic_pointer_cast<simgrid::kernel::activity::CommImpl>(synchro);
- int src_shared = 0;
- int dst_shared = 0;
size_t src_offset = 0;
size_t dst_offset = 0;
std::vector<std::pair<size_t, size_t>> src_private_blocks;
std::vector<std::pair<size_t, size_t>> dst_private_blocks;
XBT_DEBUG("Copy the data over");
- if((src_shared=smpi_is_shared(buff, src_private_blocks, &src_offset))) {
- XBT_DEBUG("Sender %p is shared. Let's ignore it.", buff);
+ if(smpi_is_shared(buff, src_private_blocks, &src_offset)) {
src_private_blocks = shift_and_frame_private_blocks(src_private_blocks, src_offset, buff_size);
+ if (src_private_blocks.empty()) { // simple shared malloc ... return.
+ XBT_VERB("Sender is shared. Let's ignore it.");
+ smpi_cleanup_comm_after_copy(comm, buff);
+ return;
+ }
}
else {
src_private_blocks.clear();
- src_private_blocks.push_back(std::make_pair(0, buff_size));
+ src_private_blocks.emplace_back(0, buff_size);
}
- if ((dst_shared = smpi_is_shared((char*)comm->dst_buff_, dst_private_blocks, &dst_offset))) {
- XBT_DEBUG("Receiver %p is shared. Let's ignore it.", (char*)comm->dst_buff_);
+ if (smpi_is_shared((char*)comm->dst_buff_, dst_private_blocks, &dst_offset)) {
dst_private_blocks = shift_and_frame_private_blocks(dst_private_blocks, dst_offset, buff_size);
+ if (dst_private_blocks.empty()) { // simple shared malloc ... return.
+ XBT_VERB("Receiver is shared. Let's ignore it.");
+ smpi_cleanup_comm_after_copy(comm, buff);
+ return;
+ }
}
else {
dst_private_blocks.clear();
- dst_private_blocks.push_back(std::make_pair(0, buff_size));
+ dst_private_blocks.emplace_back(0, buff_size);
}
check_blocks(src_private_blocks, buff_size);
check_blocks(dst_private_blocks, buff_size);
auto private_blocks = merge_private_blocks(src_private_blocks, dst_private_blocks);
check_blocks(private_blocks, buff_size);
void* tmpbuff=buff;
- if ((smpi_privatize_global_variables == SmpiPrivStrategies::MMAP) &&
- (static_cast<char*>(buff) >= smpi_data_exe_start) &&
- (static_cast<char*>(buff) < smpi_data_exe_start + smpi_data_exe_size)) {
+ if (smpi_switch_data_segment(comm->src_actor_->get_iface(), buff)) {
XBT_DEBUG("Privatization : We are copying from a zone inside global memory... Saving data to temp buffer !");
- smpi_switch_data_segment(comm->src_actor_->iface());
- tmpbuff = static_cast<void*>(xbt_malloc(buff_size));
+ tmpbuff = xbt_malloc(buff_size);
memcpy_private(tmpbuff, buff, private_blocks);
}
- if ((smpi_privatize_global_variables == SmpiPrivStrategies::MMAP) &&
- ((char*)comm->dst_buff_ >= smpi_data_exe_start) &&
- ((char*)comm->dst_buff_ < smpi_data_exe_start + smpi_data_exe_size)) {
+ if (smpi_switch_data_segment(comm->dst_actor_->get_iface(), comm->dst_buff_))
XBT_DEBUG("Privatization : We are copying to a zone inside global memory - Switch data segment");
- smpi_switch_data_segment(comm->dst_actor_->iface());
- }
+
XBT_DEBUG("Copying %zu bytes from %p to %p", buff_size, tmpbuff, comm->dst_buff_);
memcpy_private(comm->dst_buff_, tmpbuff, private_blocks);
- if (comm->detached) {
- // if this is a detached send, the source buffer was duplicated by SMPI
- // sender to make the original buffer available to the application ASAP
- xbt_free(buff);
- //It seems that the request is used after the call there this should be free somewhere else but where???
- //xbt_free(comm->comm.src_data);// inside SMPI the request is kept inside the user data and should be free
- comm->src_buff_ = nullptr;
- }
+ smpi_cleanup_comm_after_copy(comm,buff);
if (tmpbuff != buff)
xbt_free(tmpbuff);
}
-void smpi_comm_null_copy_buffer_callback(smx_activity_t comm, void *buff, size_t buff_size)
+void smpi_comm_null_copy_buffer_callback(simgrid::kernel::activity::CommImpl*, void*, size_t)
{
/* nothing done in this version */
}
-static void smpi_check_options()
+static void smpi_init_papi()
{
- //check correctness of MPI parameters
-
- xbt_assert(simgrid::config::get_value<int>("smpi/async-small-thresh") <=
- simgrid::config::get_value<int>("smpi/send-is-detached-thresh"));
-
- if (simgrid::config::is_default("smpi/host-speed")) {
- XBT_INFO("You did not set the power of the host running the simulation. "
- "The timings will certainly not be accurate. "
- "Use the option \"--cfg=smpi/host-speed:<flops>\" to set its value."
- "Check http://simgrid.org/simgrid/latest/doc/options.html#options_smpi_bench for more information.");
- }
-
- xbt_assert(simgrid::config::get_value<double>("smpi/cpu-threshold") >= 0,
- "The 'smpi/cpu-threshold' option cannot have negative values [anymore]. If you want to discard "
- "the simulation of any computation, please use 'smpi/simulate-computation:no' instead.");
-}
-
-int smpi_enabled() {
- return not process_data.empty();
-}
-
-void smpi_global_init()
-{
- if (not MC_is_active()) {
- global_timer = xbt_os_timer_new();
- xbt_os_walltimer_start(global_timer);
- }
-
- std::string filename = simgrid::config::get_value<std::string>("smpi/comp-adjustment-file");
- if (not filename.empty()) {
- std::ifstream fstream(filename);
- if (not fstream.is_open()) {
- xbt_die("Could not open file %s. Does it exist?", filename.c_str());
- }
-
- std::string line;
- typedef boost::tokenizer< boost::escaped_list_separator<char>> Tokenizer;
- std::getline(fstream, line); // Skip the header line
- while (std::getline(fstream, line)) {
- Tokenizer tok(line);
- Tokenizer::iterator it = tok.begin();
- Tokenizer::iterator end = std::next(tok.begin());
-
- std::string location = *it;
- boost::trim(location);
- location2speedup.insert(std::pair<std::string, double>(location, std::stod(*end)));
- }
- }
-
#if HAVE_PAPI
// This map holds for each computation unit (such as "default" or "process1" etc.)
// the configuration as given by the user (counter data as a pair of (counter_name, counter_counter))
// and the (computed) event_set.
- if (not simgrid::config::get_value<std::string>("smpi/papi-events").empty()) {
- if (PAPI_library_init(PAPI_VER_CURRENT) != PAPI_VER_CURRENT)
- XBT_ERROR("Could not initialize PAPI library; is it correctly installed and linked?"
- " Expected version is %u", PAPI_VER_CURRENT);
-
- typedef boost::tokenizer<boost::char_separator<char>> Tokenizer;
- boost::char_separator<char> separator_units(";");
- std::string str = simgrid::config::get_value<std::string>("smpi/papi-events");
- Tokenizer tokens(str, separator_units);
-
- // Iterate over all the computational units. This could be processes, hosts, threads, ranks... You name it.
- // I'm not exactly sure what we will support eventually, so I'll leave it at the general term "units".
- for (auto const& unit_it : tokens) {
- boost::char_separator<char> separator_events(":");
- Tokenizer event_tokens(unit_it, separator_events);
-
- int event_set = PAPI_NULL;
- if (PAPI_create_eventset(&event_set) != PAPI_OK) {
- // TODO: Should this let the whole simulation die?
- XBT_CRITICAL("Could not create PAPI event set during init.");
- }
-
- // NOTE: We cannot use a map here, as we must obey the order of the counters
- // This is important for PAPI: We need to map the values of counters back
- // to the event_names (so, when PAPI_read() has finished)!
- papi_counter_t counters2values;
-
- // Iterate over all counters that were specified for this specific
- // unit.
- // Note that we need to remove the name of the unit
- // (that could also be the "default" value), which always comes first.
- // Hence, we start at ++(events.begin())!
- for (Tokenizer::iterator events_it = ++(event_tokens.begin()); events_it != event_tokens.end(); ++events_it) {
-
- int event_code = PAPI_NULL;
- char* event_name = const_cast<char*>((*events_it).c_str());
- if (PAPI_event_name_to_code(event_name, &event_code) != PAPI_OK) {
- XBT_CRITICAL("Could not find PAPI event '%s'. Skipping.", event_name);
- continue;
- }
- if (PAPI_add_event(event_set, event_code) != PAPI_OK) {
- XBT_ERROR("Could not add PAPI event '%s'. Skipping.", event_name);
- continue;
- }
- XBT_DEBUG("Successfully added PAPI event '%s' to the event set.", event_name);
-
- counters2values.push_back(
- // We cannot just pass *events_it, as this is of type const basic_string
- std::make_pair<std::string, long long>(std::string(*events_it), 0));
- }
-
- std::string unit_name = *(event_tokens.begin());
- papi_process_data config = {.counter_data = std::move(counters2values), .event_set = event_set};
+ if (smpi_cfg_papi_events_file().empty())
+ return;
- units2papi_setup.insert(std::make_pair(unit_name, std::move(config)));
- }
+ if (PAPI_library_init(PAPI_VER_CURRENT) != PAPI_VER_CURRENT) {
+ XBT_ERROR("Could not initialize PAPI library; is it correctly installed and linked? Expected version is %u",
+ PAPI_VER_CURRENT);
+ return;
}
-#endif
-}
-void smpi_global_destroy()
-{
- smpi_bench_destroy();
- smpi_shared_destroy();
- smpi_deployment_cleanup_instances();
-
- if (simgrid::smpi::Colls::smpi_coll_cleanup_callback != nullptr)
- simgrid::smpi::Colls::smpi_coll_cleanup_callback();
-
- MPI_COMM_WORLD = MPI_COMM_NULL;
+ using Tokenizer = boost::tokenizer<boost::char_separator<char>>;
+ boost::char_separator<char> separator_units(";");
+ std::string str = smpi_cfg_papi_events_file();
+ Tokenizer tokens(str, separator_units);
+
+ // Iterate over all the computational units. This could be processes, hosts, threads, ranks... You name it.
+ // I'm not exactly sure what we will support eventually, so I'll leave it at the general term "units".
+ for (auto const& unit_it : tokens) {
+ boost::char_separator<char> separator_events(":");
+ Tokenizer event_tokens(unit_it, separator_events);
+
+ int event_set = PAPI_NULL;
+ if (PAPI_create_eventset(&event_set) != PAPI_OK) {
+ // TODO: Should this let the whole simulation die?
+ XBT_CRITICAL("Could not create PAPI event set during init.");
+ break;
+ }
- if (not MC_is_active()) {
- xbt_os_timer_free(global_timer);
- }
+ // NOTE: We cannot use a map here, as we must obey the order of the counters
+ // This is important for PAPI: We need to map the values of counters back to the event_names (so, when PAPI_read()
+ // has finished)!
+ papi_counter_t counters2values;
+
+ // Iterate over all counters that were specified for this specific unit.
+ // Note that we need to remove the name of the unit (that could also be the "default" value), which always comes
+ // first. Hence, we start at ++(events.begin())!
+ for (Tokenizer::iterator events_it = ++(event_tokens.begin()); events_it != event_tokens.end(); ++events_it) {
+ int event_code = PAPI_NULL;
+ auto* event_name = const_cast<char*>((*events_it).c_str());
+ if (PAPI_event_name_to_code(event_name, &event_code) != PAPI_OK) {
+ XBT_CRITICAL("Could not find PAPI event '%s'. Skipping.", event_name);
+ continue;
+ }
+ if (PAPI_add_event(event_set, event_code) != PAPI_OK) {
+ XBT_ERROR("Could not add PAPI event '%s'. Skipping.", event_name);
+ continue;
+ }
+ XBT_DEBUG("Successfully added PAPI event '%s' to the event set.", event_name);
- if (smpi_privatize_global_variables == SmpiPrivStrategies::MMAP)
- smpi_destroy_global_memory_segments();
- smpi_free_static();
- if(simgrid::smpi::F2C::lookup() != nullptr)
- simgrid::smpi::F2C::delete_lookup();
-}
+ counters2values.emplace_back(*events_it, 0LL);
+ }
-static void smpi_init_options(){
- // return if already called
- if (smpi_cpu_threshold > -1)
- return;
- simgrid::smpi::Colls::set_collectives();
- simgrid::smpi::Colls::smpi_coll_cleanup_callback = nullptr;
- smpi_cpu_threshold = simgrid::config::get_value<double>("smpi/cpu-threshold");
- smpi_host_speed = simgrid::config::get_value<double>("smpi/host-speed");
- xbt_assert(smpi_host_speed > 0.0, "You're trying to set the host_speed to a non-positive value (given: %f)", smpi_host_speed);
- std::string smpi_privatize_option = simgrid::config::get_value<std::string>("smpi/privatization");
- if (smpi_privatize_option == "no" || smpi_privatize_option == "0")
- smpi_privatize_global_variables = SmpiPrivStrategies::NONE;
- else if (smpi_privatize_option == "yes" || smpi_privatize_option == "1")
- smpi_privatize_global_variables = SmpiPrivStrategies::DEFAULT;
- else if (smpi_privatize_option == "mmap")
- smpi_privatize_global_variables = SmpiPrivStrategies::MMAP;
- else if (smpi_privatize_option == "dlopen")
- smpi_privatize_global_variables = SmpiPrivStrategies::DLOPEN;
- else
- xbt_die("Invalid value for smpi/privatization: '%s'", smpi_privatize_option.c_str());
+ std::string unit_name = *(event_tokens.begin());
+ papi_process_data config = {.counter_data = std::move(counters2values), .event_set = event_set};
- if (not SMPI_switch_data_segment) {
- XBT_DEBUG("Running without smpi_main(); disable smpi/privatization.");
- smpi_privatize_global_variables = SmpiPrivStrategies::NONE;
- }
-#if !HAVE_WORKING_MMAP
- if (smpi_privatize_global_variables == SmpiPrivStrategies::MMAP) {
- XBT_INFO("mmap privatization is broken on this platform, switching to dlopen privatization instead.");
- smpi_privatize_global_variables = SmpiPrivStrategies::DLOPEN;
+ units2papi_setup.try_emplace(unit_name, std::move(config));
}
#endif
-
- if (smpi_cpu_threshold < 0)
- smpi_cpu_threshold = DBL_MAX;
-
- std::string val = simgrid::config::get_value<std::string>("smpi/shared-malloc");
- if ((val == "yes") || (val == "1") || (val == "on") || (val == "global")) {
- smpi_cfg_shared_malloc = SharedMallocType::GLOBAL;
- } else if (val == "local") {
- smpi_cfg_shared_malloc = SharedMallocType::LOCAL;
- } else if ((val == "no") || (val == "0") || (val == "off")) {
- smpi_cfg_shared_malloc = SharedMallocType::NONE;
- } else {
- xbt_die("Invalid value '%s' for option smpi/shared-malloc. Possible values: 'on' or 'global', 'local', 'off'",
- val.c_str());
- }
}
-typedef std::function<int(int argc, char *argv[])> smpi_entry_point_type;
-typedef int (* smpi_c_entry_point_type)(int argc, char **argv);
-typedef void (*smpi_fortran_entry_point_type)();
+using smpi_entry_point_type = std::function<int(int argc, char* argv[])>;
+using smpi_c_entry_point_type = int (*)(int argc, char** argv);
+using smpi_fortran_entry_point_type = void (*)();
-static int smpi_run_entry_point(smpi_entry_point_type entry_point, const std::string& executable_path,
- std::vector<std::string> args)
+template <typename F>
+static int smpi_run_entry_point(const F& entry_point, const std::string& executable_path,
+ const std::vector<std::string>& args)
{
// copy C strings, we need them writable
- std::vector<char*>* args4argv = new std::vector<char*>(args.size());
- std::transform(begin(args), end(args), begin(*args4argv), [](const std::string& s) { return xbt_strdup(s.c_str()); });
+ std::vector<char*> args4argv(args.size());
+ std::transform(begin(args) + 1, end(args), begin(args4argv) + 1,
+ [](const std::string& s) { return xbt_strdup(s.c_str()); });
// set argv[0] to executable_path
- xbt_free((*args4argv)[0]);
- (*args4argv)[0] = xbt_strdup(executable_path.c_str());
+ args4argv[0] = xbt_strdup(executable_path.c_str());
+ // add the final NULL
+ args4argv.push_back(nullptr);
-#if !SMPI_IFORT
// take a copy of args4argv to keep reference of the allocated strings
- const std::vector<char*> args2str(*args4argv);
-#endif
- int argc = args4argv->size();
- args4argv->push_back(nullptr);
- char** argv = args4argv->data();
-
- simgrid::smpi::ActorExt::init();
-#if SMPI_IFORT
- for_rtl_init_ (&argc, argv);
-#elif SMPI_FLANG
- __io_set_argc(argc);
- __io_set_argv(argv);
-#elif SMPI_GFORTRAN
- _gfortran_set_args(argc, argv);
-#endif
- int res = entry_point(argc, argv);
+ const std::vector<char*> args2str(args4argv);
+
+ try {
+ int argc = static_cast<int>(args4argv.size() - 1);
+ char** argv = args4argv.data();
+ int res = entry_point(argc, argv);
+ if (res != 0) {
+ XBT_WARN("SMPI process did not return 0. Return value : %d", res);
+ if (smpi_exit_status == 0)
+ smpi_exit_status = res;
+ }
+ } catch (simgrid::ForcefulKillException const& e) {
+ XBT_DEBUG("Caught a ForcefulKillException: %s", e.what());
+ }
-#if SMPI_IFORT
- for_rtl_finish_ ();
-#else
for (char* s : args2str)
xbt_free(s);
- delete args4argv;
-#endif
- if (res != 0){
- XBT_WARN("SMPI process did not return 0. Return value : %d", res);
- if (smpi_exit_status == 0)
- smpi_exit_status = res;
- }
return 0;
}
-
-// TODO, remove the number of functions involved here
static smpi_entry_point_type smpi_resolve_function(void* handle)
{
- smpi_fortran_entry_point_type entry_point_fortran = (smpi_fortran_entry_point_type)dlsym(handle, "user_main_");
- if (entry_point_fortran != nullptr) {
- return [entry_point_fortran](int argc, char** argv) {
+ if (auto* entry_point_fortran = reinterpret_cast<smpi_fortran_entry_point_type>(dlsym(handle, "user_main_"))) {
+ return [entry_point_fortran](int, char**) {
entry_point_fortran();
return 0;
};
}
- smpi_c_entry_point_type entry_point = (smpi_c_entry_point_type)dlsym(handle, "main");
- if (entry_point != nullptr) {
+ if (auto* entry_point = reinterpret_cast<smpi_c_entry_point_type>(dlsym(handle, "main"))) {
return entry_point;
}
return smpi_entry_point_type();
}
-static void smpi_copy_file(std::string src, std::string target, off_t fdin_size)
+static void smpi_copy_file(const std::string& src, const std::string& target, off_t fdin_size)
{
int fdin = open(src.c_str(), O_RDONLY);
xbt_assert(fdin >= 0, "Cannot read from %s. Please make sure that the file exists and is executable.", src.c_str());
- int fdout = open(target.c_str(), O_CREAT | O_RDWR, S_IRWXU);
- xbt_assert(fdout >= 0, "Cannot write into %s", target.c_str());
+ xbt_assert(unlink(target.c_str()) == 0 || errno == ENOENT, "Failed to unlink file %s: %s", target.c_str(),
+ strerror(errno));
+ int fdout = open(target.c_str(), O_CREAT | O_RDWR | O_EXCL, S_IRWXU);
+ xbt_assert(fdout >= 0, "Cannot write into %s: %s", target.c_str(), strerror(errno));
XBT_DEBUG("Copy %" PRIdMAX " bytes into %s", static_cast<intmax_t>(fdin_size), target.c_str());
#if SG_HAVE_SENDFILE
- ssize_t sent_size = sendfile(fdout, fdin, NULL, fdin_size);
- xbt_assert(sent_size == fdin_size || (sent_size == -1 && errno == ENOSYS),
+ ssize_t sent_size = sendfile(fdout, fdin, nullptr, fdin_size);
+ if (sent_size == fdin_size) {
+ close(fdin);
+ close(fdout);
+ return;
+ }
+ xbt_assert(sent_size == -1 && errno == ENOSYS,
"Error while copying %s: only %zd bytes copied instead of %" PRIdMAX " (errno: %d -- %s)", target.c_str(),
sent_size, static_cast<intmax_t>(fdin_size), errno, strerror(errno));
-#else
- ssize_t sent_size = -1;
#endif
- if (sent_size != fdin_size) { // sendfile is not available
- const int bufsize = 1024 * 1024 * 4;
- char buf[bufsize];
- while (int got = read(fdin, buf, bufsize)) {
- if (got == -1) {
- xbt_assert(errno == EINTR, "Cannot read from %s", src.c_str());
- } else {
- char* p = buf;
- int todo = got;
- while (int done = write(fdout, p, todo)) {
- if (done == -1) {
- xbt_assert(errno == EINTR, "Cannot write into %s", target.c_str());
- } else {
- p += done;
- todo -= done;
- }
- }
+ // If this point is reached, sendfile() actually is not available. Copy file by hand.
+ std::vector<unsigned char> buf(1024 * 1024 * 4);
+ while (ssize_t got = read(fdin, buf.data(), buf.size())) {
+ if (got == -1) {
+ xbt_assert(errno == EINTR, "Cannot read from %s", src.c_str());
+ continue;
+ }
+ const unsigned char* p = buf.data();
+ ssize_t todo = got;
+ while (ssize_t done = write(fdout, p, todo)) {
+ if (done == -1) {
+ xbt_assert(errno == EINTR, "Cannot write into %s", target.c_str());
+ continue;
}
+ p += done;
+ todo -= done;
}
}
close(fdin);
close(fdout);
}
-#if not defined(__APPLE__)
+#if not defined(__APPLE__) && not defined(__HAIKU__)
static int visit_libs(struct dl_phdr_info* info, size_t, void* data)
{
- char* libname = (char*)(data);
- const char *path = info->dlpi_name;
- if(strstr(path, libname)){
- strncpy(libname, path, 512);
- return 1;
- }
-
- return 0;
+ auto* libname = static_cast<std::string*>(data);
+ std::string path = info->dlpi_name;
+ if (path.find(*libname) == std::string::npos)
+ return 0;
+
+ *libname = std::move(path);
+ return 1;
}
#endif
stat(executable.c_str(), &fdin_stat);
off_t fdin_size = fdin_stat.st_size;
- std::string libnames = simgrid::config::get_value<std::string>("smpi/privatize-libs");
- if (not libnames.empty()) {
+ if (std::string libnames = simgrid::config::get_value<std::string>("smpi/privatize-libs"); not libnames.empty()) {
// split option
std::vector<std::string> privatize_libs;
boost::split(privatize_libs, libnames, boost::is_any_of(";"));
for (auto const& libname : privatize_libs) {
// load the library once to add it to the local libs, to get the absolute path
void* libhandle = dlopen(libname.c_str(), RTLD_LAZY);
+ xbt_assert(libhandle != nullptr, "Cannot dlopen %s - check your settings in smpi/privatize-libs",
+ libname.c_str());
// get library name from path
- char fullpath[512] = {'\0'};
- strncpy(fullpath, libname.c_str(), 511);
-#if not defined(__APPLE__)
- int ret = dl_iterate_phdr(visit_libs, fullpath);
- if (ret == 0)
- xbt_die("Can't find a linked %s - check the setting you gave to smpi/privatize-libs", fullpath);
- else
- XBT_DEBUG("Extra lib to privatize found : %s", fullpath);
+ std::string fullpath = libname;
+#if not defined(__APPLE__) && not defined(__HAIKU__)
+ xbt_assert(dl_iterate_phdr(visit_libs, &fullpath) != 0,
+ "Can't find a linked %s - check your settings in smpi/privatize-libs", fullpath.c_str());
+ XBT_DEBUG("Extra lib to privatize '%s' found", fullpath.c_str());
#else
- xbt_die("smpi/privatize-libs is not (yet) compatible with OSX");
+ xbt_die("smpi/privatize-libs is not (yet) compatible with OSX nor with Haiku");
#endif
- privatize_libs_paths.push_back(fullpath);
+ privatize_libs_paths.emplace_back(std::move(fullpath));
dlclose(libhandle);
}
}
- simix_global->default_function = [executable, fdin_size](std::vector<std::string> args) {
- return std::function<void()>([executable, fdin_size, args] {
+ simgrid::s4u::Engine::get_instance()->register_default([executable, fdin_size](std::vector<std::string> args) {
+ return simgrid::kernel::actor::ActorCode([executable, fdin_size, args = std::move(args)] {
static std::size_t rank = 0;
// Copy the dynamic library:
- std::string target_executable =
- executable + "_" + std::to_string(getpid()) + "_" + std::to_string(rank) + ".so";
+ simgrid::xbt::Path path(executable);
+ std::string target_executable = simgrid::config::get_value<std::string>("smpi/tmpdir") + "/" +
+ path.get_base_name() + "_" + std::to_string(getpid()) + "_" + std::to_string(rank) + ".so";
smpi_copy_file(executable, target_executable, fdin_size);
// if smpi/privatize-libs is set, duplicate pointed lib and link each executable copy to a different one.
// Copy the dynamic library, the new name must be the same length as the old one
// just replace the name with 7 digits for the rank and the rest of the name.
- unsigned int pad = 7;
- if (libname.length() < pad)
- pad = libname.length();
- std::string target_lib =
- std::string(pad - std::to_string(rank).length(), '0') + std::to_string(rank) + libname.substr(pad);
+ auto pad = std::min<size_t>(7, libname.length());
+ std::string target_libname = std::string(pad - std::to_string(rank).length(), '0') + std::to_string(rank) + libname.substr(pad);
+ std::string target_lib = simgrid::config::get_value<std::string>("smpi/tmpdir") + "/" + target_libname;
target_libs.push_back(target_lib);
XBT_DEBUG("copy lib %s to %s, with size %lld", libpath.c_str(), target_lib.c_str(), (long long)fdin_size2);
smpi_copy_file(libpath, target_lib, fdin_size2);
- std::string sedcommand = "sed -i -e 's/" + libname + "/" + target_lib + "/g' " + target_executable;
- int ret = system(sedcommand.c_str());
- if (ret != 0)
- xbt_die("error while applying sed command %s \n", sedcommand.c_str());
+ std::string sedcommand = "sed -i -e 's/" + libname + "/" + target_libname + "/g' " + target_executable;
+ int status = system(sedcommand.c_str());
+ xbt_assert(status == 0, "error while applying sed command %s \n", sedcommand.c_str());
}
}
// Load the copy and resolve the entry point:
void* handle = dlopen(target_executable.c_str(), RTLD_LAZY | RTLD_LOCAL | WANT_RTLD_DEEPBIND);
int saved_errno = errno;
- if (simgrid::config::get_value<bool>("smpi/keep-temps") == false) {
+ if (not simgrid::config::get_value<bool>("smpi/keep-temps")) {
unlink(target_executable.c_str());
for (const std::string& target_lib : target_libs)
unlink(target_lib.c_str());
}
- if (handle == nullptr)
- xbt_die("dlopen failed: %s (errno: %d -- %s)", dlerror(), saved_errno, strerror(saved_errno));
+ xbt_assert(handle != nullptr,
+ "dlopen failed: %s (errno: %d -- %s).\nError: Did you compile the program with a SMPI-specific "
+ "compiler (spmicc or friends)?",
+ dlerror(), saved_errno, strerror(saved_errno));
+
smpi_entry_point_type entry_point = smpi_resolve_function(handle);
- if (not entry_point)
- xbt_die("Could not resolve entry point");
+ xbt_assert(entry_point, "Could not resolve entry point. Does your program contain a main() function?");
smpi_run_entry_point(entry_point, executable, args);
});
- };
+ });
}
static void smpi_init_privatization_no_dlopen(const std::string& executable)
{
- if (smpi_privatize_global_variables == SmpiPrivStrategies::MMAP)
+ if (smpi_cfg_privatization() == SmpiPrivStrategies::MMAP)
smpi_prepare_global_memory_segment();
+
// Load the dynamic library and resolve the entry point:
void* handle = dlopen(executable.c_str(), RTLD_LAZY | RTLD_LOCAL);
- if (handle == nullptr)
- xbt_die("dlopen failed for %s: %s (errno: %d -- %s)", executable.c_str(), dlerror(), errno, strerror(errno));
+ xbt_assert(handle != nullptr, "dlopen failed for %s: %s (errno: %d -- %s)", executable.c_str(), dlerror(), errno,
+ strerror(errno));
smpi_entry_point_type entry_point = smpi_resolve_function(handle);
- if (not entry_point)
- xbt_die("main not found in %s", executable.c_str());
- if (smpi_privatize_global_variables == SmpiPrivStrategies::MMAP)
+ xbt_assert(entry_point, "main not found in %s", executable.c_str());
+
+ if (smpi_cfg_privatization() == SmpiPrivStrategies::MMAP)
smpi_backup_global_memory_segment();
// Execute the same entry point for each simulated process:
- simix_global->default_function = [entry_point, executable](std::vector<std::string> args) {
- return std::function<void()>(
- [entry_point, executable, args] { smpi_run_entry_point(entry_point, executable, args); });
- };
+ simgrid::s4u::Engine::get_instance()->register_default([entry_point, executable](std::vector<std::string> args) {
+ return simgrid::kernel::actor::ActorCode([entry_point, executable, args = std::move(args)] {
+ if (smpi_cfg_privatization() == SmpiPrivStrategies::MMAP) {
+ simgrid::smpi::ActorExt* ext = smpi_process();
+ /* Now using the segment index of this process */
+ ext->set_privatized_region(smpi_init_global_memory_segment_process());
+ /* Done at the process's creation */
+ smpi_switch_data_segment(simgrid::s4u::Actor::self());
+ }
+ smpi_run_entry_point(entry_point, executable, args);
+ });
+ });
}
int smpi_main(const char* executable, int argc, char* argv[])
{
- srand(SMPI_RAND_SEED);
-
if (getenv("SMPI_PRETEND_CC") != nullptr) {
/* Hack to ensure that smpicc can pretend to be a simple compiler. Particularly handy to pass it to the
* configuration tools */
return 0;
}
- TRACE_global_init();
- SIMIX_global_init(&argc, argv);
-
- SMPI_switch_data_segment = &smpi_switch_data_segment;
+ smpi_init_options_internal(true);
+ simgrid::s4u::Engine engine(&argc, argv);
+ sg_storage_file_system_init();
// parse the platform file: get the host list
- simgrid::s4u::Engine::get_instance()->load_platform(argv[1]);
- SIMIX_comm_set_copy_data_callback(smpi_comm_copy_buffer_callback);
+ engine.load_platform(argv[1]);
+ engine.set_default_comm_data_copy_callback(smpi_comm_copy_buffer_callback);
- smpi_init_options();
- if (smpi_privatize_global_variables == SmpiPrivStrategies::DLOPEN)
+ if (smpi_cfg_privatization() == SmpiPrivStrategies::DLOPEN)
smpi_init_privatization_dlopen(executable);
else
smpi_init_privatization_no_dlopen(executable);
+ simgrid::smpi::colls::set_collectives();
+ simgrid::smpi::colls::smpi_coll_cleanup_callback = nullptr;
+
+ std::vector<char*> args4argv(argv + 1, argv + argc + 1); // last element is NULL
+ args4argv[0] = xbt_strdup(executable);
+ int real_argc = argc - 1;
+ char** real_argv = args4argv.data();
+
+ // Setup argc/argv for the Fortran run-time environment
+#if SMPI_IFORT
+ for_rtl_init_(&real_argc, real_argv);
+#elif SMPI_FLANG
+ __io_set_argc(real_argc);
+ __io_set_argv(real_argv);
+#elif SMPI_GFORTRAN
+ _gfortran_set_args(real_argc, real_argv);
+#endif
+
SMPI_init();
- simgrid::s4u::Engine::get_instance()->load_deployment(argv[2]);
- SMPI_app_instance_register(smpi_default_instance_name.c_str(), nullptr,
- process_data.size()); // This call has a side effect on process_count...
- MPI_COMM_WORLD = *smpi_deployment_comm_world(smpi_default_instance_name);
- smpi_universe_size = process_count;
+ const std::vector<const char*> args(real_argv + 1, real_argv + real_argc);
+ int rank_counts =
+ smpi_deployment_smpirun(&engine, smpi_hostfile.get(), smpi_np.get(), smpi_replay.get(), smpi_map.get(), args);
+
+ SMPI_app_instance_register(smpi_default_instance_name.c_str(), nullptr, rank_counts);
+ MPI_COMM_WORLD = *smpi_deployment_comm_world(smpi_default_instance_name);
/* Clean IO before the run */
fflush(stdout);
fflush(stderr);
- if (MC_is_active()) {
- MC_run();
- } else {
+ engine.get_impl()->run(-1);
- SIMIX_run();
+ xbt_os_walltimer_stop(global_timer);
+ simgrid::smpi::utils::print_time_analysis(xbt_os_timer_elapsed(global_timer));
- xbt_os_walltimer_stop(global_timer);
- if (simgrid::config::get_value<bool>("smpi/display-timing")) {
- double global_time = xbt_os_timer_elapsed(global_timer);
- XBT_INFO("Simulated time: %g seconds. \n\n"
- "The simulation took %g seconds (after parsing and platform setup)\n"
- "%g seconds were actual computation of the application",
- SIMIX_get_clock(), global_time , smpi_total_benched_time);
+ SMPI_finalize();
- if (smpi_total_benched_time/global_time>=0.75)
- XBT_INFO("More than 75%% of the time was spent inside the application code.\n"
- "You may want to use sampling functions or trace replay to reduce this.");
- }
- }
- smpi_global_destroy();
+#if SMPI_IFORT
+ for_rtl_finish_();
+#endif
+ xbt_free(args4argv[0]);
return smpi_exit_status;
}
+int SMPI_is_inited()
+{
+ return MPI_COMM_WORLD != MPI_COMM_UNINITIALIZED;
+}
+
// Called either directly from the user code, or from the code called by smpirun
void SMPI_init(){
- simgrid::s4u::Actor::on_creation.connect([](simgrid::s4u::ActorPtr actor) {
- if (not actor->is_daemon()) {
- process_data.insert({actor, new simgrid::smpi::ActorExt(actor, nullptr)});
- }
- });
- simgrid::s4u::Actor::on_destruction.connect([](simgrid::s4u::ActorPtr actor) {
- auto it = process_data.find(actor);
- if (it != process_data.end()) {
- delete it->second;
- process_data.erase(it);
- }
+ smpi_init_options_internal(false);
+ simgrid::s4u::Actor::on_creation_cb([](simgrid::s4u::Actor& actor) {
+ if (not actor.is_daemon())
+ actor.extension_set<simgrid::smpi::ActorExt>(new simgrid::smpi::ActorExt(&actor));
});
- simgrid::s4u::Host::on_creation.connect(
+ simgrid::s4u::Host::on_creation_cb(
[](simgrid::s4u::Host& host) { host.extension_set(new simgrid::smpi::Host(&host)); });
+ for (auto const& host : simgrid::s4u::Engine::get_instance()->get_all_hosts())
+ host->extension_set(new simgrid::smpi::Host(host));
- smpi_init_options();
- smpi_global_init();
+ if (not MC_is_active()) {
+ global_timer = xbt_os_timer_new();
+ xbt_os_walltimer_start(global_timer);
+ }
+ smpi_init_papi();
smpi_check_options();
}
-void SMPI_finalize(){
- smpi_global_destroy();
+void SMPI_finalize()
+{
+ smpi_bench_destroy();
+ smpi_shared_destroy();
+ smpi_deployment_cleanup_instances();
+ smpi_cleanup_op_cost_callback();
+
+ if (simgrid::smpi::colls::smpi_coll_cleanup_callback != nullptr)
+ simgrid::smpi::colls::smpi_coll_cleanup_callback();
+
+ MPI_COMM_WORLD = MPI_COMM_NULL;
+
+ if (not MC_is_active()) {
+ xbt_os_timer_free(global_timer);
+ }
+
+ if (smpi_cfg_privatization() == SmpiPrivStrategies::MMAP)
+ smpi_destroy_global_memory_segments();
+
+ simgrid::smpi::utils::print_memory_analysis();
}
void smpi_mpi_init() {
smpi_init_fortran_types();
- if(smpi_init_sleep > 0)
- simcall_process_sleep(smpi_init_sleep);
+ if(_smpi_init_sleep > 0)
+ simgrid::s4u::this_actor::sleep_for(_smpi_init_sleep);
+ if (not MC_is_active()) {
+ smpi_deployment_startup_barrier(smpi_process()->get_instance_id());
+ }
+}
+
+void SMPI_thread_create() {
+ TRACE_smpi_init(simgrid::s4u::this_actor::get_pid(), __func__);
+ smpi_process()->mark_as_initialized();
+}
+
+void smpi_exit(int res){
+ if(res != 0){
+ XBT_WARN("SMPI process did not return 0. Return value : %d", res);
+ smpi_exit_status = res;
+ }
+ simgrid::s4u::this_actor::exit();
+ THROW_IMPOSSIBLE;
}