/* 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 "SmpiHost.hpp"
+#include "smpi_host.hpp"
#include "mc/mc.h"
#include "simgrid/s4u/Engine.hpp"
#include "smpi_coll.hpp"
#include <cfloat> /* DBL_MAX */
#include <dlfcn.h>
#include <fcntl.h>
+#if not defined(__APPLE__)
+#include <link.h>
+#endif
#include <fstream>
#if HAVE_SENDFILE
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
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) &&
+ 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)) {
XBT_DEBUG("Privatization : We are copying from a zone inside global memory... Saving data to temp buffer !");
memcpy_private(tmpbuff, buff, private_blocks);
}
- if ((smpi_privatize_global_variables == SmpiPrivStrategies::Mmap) && ((char*)comm->dst_buff >= smpi_data_exe_start) &&
+ 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)) {
XBT_DEBUG("Privatization : We are copying to a zone inside global memory - Switch data segment");
smpi_switch_data_segment(comm->dst_proc->iface());
xbt_os_timer_free(global_timer);
}
- if (smpi_privatize_global_variables == SmpiPrivStrategies::Mmap)
+ if (smpi_privatize_global_variables == SmpiPrivStrategies::MMAP)
smpi_destroy_global_memory_segments();
smpi_free_static();
}
xbt_assert(smpi_host_speed >= 0, "You're trying to set the host_speed to a negative value (%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;
+ smpi_privatize_global_variables = SmpiPrivStrategies::NONE;
else if (smpi_privatize_option == "yes" || smpi_privatize_option == "1")
- smpi_privatize_global_variables = SmpiPrivStrategies::Default;
+ smpi_privatize_global_variables = SmpiPrivStrategies::DEFAULT;
else if (smpi_privatize_option == "mmap")
- smpi_privatize_global_variables = SmpiPrivStrategies::Mmap;
+ smpi_privatize_global_variables = SmpiPrivStrategies::MMAP;
else if (smpi_privatize_option == "dlopen")
- smpi_privatize_global_variables = SmpiPrivStrategies::Dlopen;
+ smpi_privatize_global_variables = SmpiPrivStrategies::DLOPEN;
else
xbt_die("Invalid value for smpi/privatization: '%s'", smpi_privatize_option.c_str());
if (not SMPI_switch_data_segment) {
XBT_DEBUG("Running without smpi_main(); disable smpi/privatization.");
- smpi_privatize_global_variables = SmpiPrivStrategies::None;
+ smpi_privatize_global_variables = SmpiPrivStrategies::NONE;
}
#if defined(__FreeBSD__)
- if (smpi_privatize_global_variables == SmpiPrivStrategies::Mmap) {
+ if (smpi_privatize_global_variables == SmpiPrivStrategies::MMAP) {
XBT_INFO("mmap privatization is broken on FreeBSD, switching to dlopen privatization instead.");
- smpi_privatize_global_variables = SmpiPrivStrategies::Dlopen;
+ smpi_privatize_global_variables = SmpiPrivStrategies::DLOPEN;
}
#endif
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 = shmalloc_global;
+ smpi_cfg_shared_malloc = SharedMallocType::GLOBAL;
} else if (val == "local") {
- smpi_cfg_shared_malloc = shmalloc_local;
+ smpi_cfg_shared_malloc = SharedMallocType::LOCAL;
} else if ((val == "no") || (val == "0") || (val == "off")) {
- smpi_cfg_shared_malloc = shmalloc_none;
+ 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());
return 0;
}
+
// TODO, remove the number of functions involved here
static smpi_entry_point_type smpi_resolve_function(void* handle)
{
return smpi_entry_point_type();
}
+static void smpi_copy_file(std::string src,std::string target, off_t fdin_size, int rank){
+
+ 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_DEBUG("Copy %ld bytes into %s", static_cast<long>(fdin_size), target.c_str());
+#if HAVE_SENDFILE
+ ssize_t sent_size = sendfile(fdout, fdin, NULL, fdin_size);
+ xbt_assert(sent_size == fdin_size,
+ "Error while copying %s: only %zd bytes copied instead of %ld (errno: %d -- %s)",
+ target.c_str(), sent_size, fdin_size, errno, strerror(errno));
+#else
+ 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;
+ }
+ }
+ }
+ }
+#endif
+ close(fdin);
+ close(fdout);
+}
+
+#if not defined(__APPLE__)
+static int visit_libs (struct dl_phdr_info *info,
+ size_t size, void *data){
+ char* libname = (char*)(data);
+ const char *path = info->dlpi_name;
+ if(strstr(path, libname)){
+ strncpy(libname, path, 512);
+ return 1;
+ }
+
+ return 0;
+}
+#endif
+
int smpi_main(const char* executable, int argc, char *argv[])
{
srand(SMPI_RAND_SEED);
// TODO This will not be executed in the case where smpi_main is not called,
// e.g., not for smpi_msg_masterslave. This should be moved to another location
// that is always called -- maybe close to Actor::onCreation?
- simgrid::s4u::Host::onCreation.connect([](simgrid::s4u::Host& host) {
- host.extension_set(new simgrid::smpi::SmpiHost(&host));
- });
+ simgrid::s4u::Host::on_creation.connect(
+ [](simgrid::s4u::Host& host) { host.extension_set(new simgrid::smpi::Host(&host)); });
// parse the platform file: get the host list
SIMIX_create_environment(argv[1]);
SIMIX_comm_set_copy_data_callback(smpi_comm_copy_buffer_callback);
smpi_init_options();
- if (smpi_privatize_global_variables == SmpiPrivStrategies::Dlopen) {
+ if (smpi_privatize_global_variables == SmpiPrivStrategies::DLOPEN) {
std::string executable_copy = executable;
stat(executable_copy.c_str(), &fdin_stat);
off_t fdin_size = fdin_stat.st_size;
static std::size_t rank = 0;
-
+
+
+ std::string libnames = simgrid::config::get_value<std::string>("smpi/privatize-libs");
+ if(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);
+ //get library name from path
+ char fullpath[512]={'\0'};
+ strcpy(fullpath, libname.c_str());
+#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);
+#else
+ xbt_die("smpi/privatize-libs is not (yet) compatible with OSX");
+#endif
+ privatize_libs_paths.push_back(fullpath);
+ dlclose(libhandle);
+ }
+ }
+
simix_global->default_function = [executable_copy, fdin_size](std::vector<std::string> args) {
return std::function<void()>([executable_copy, fdin_size, args] {
// Copy the dynamic library:
std::string target_executable = executable_copy
+ "_" + std::to_string(getpid())
- + "_" + std::to_string(rank++) + ".so";
-
- int fdin = open(executable_copy.c_str(), O_RDONLY);
- xbt_assert(fdin >= 0, "Cannot read from %s. Please make sure that the file exists and is executable.",
- executable_copy.c_str());
- int fdout = open(target_executable.c_str(), O_CREAT | O_RDWR, S_IRWXU);
- xbt_assert(fdout >= 0, "Cannot write into %s", target_executable.c_str());
-
- XBT_DEBUG("Copy %ld bytes into %s", static_cast<long>(fdin_size), target_executable.c_str());
-#if HAVE_SENDFILE
- ssize_t sent_size = sendfile(fdout, fdin, NULL, fdin_size);
- xbt_assert(sent_size == fdin_size,
- "Error while copying %s: only %zd bytes copied instead of %ld (errno: %d -- %s)",
- target_executable.c_str(), sent_size, fdin_size, errno, strerror(errno));
-#else
- 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", executable_copy.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_executable.c_str());
- } else {
- p += done;
- todo -= done;
- }
- }
+ + "_" + std::to_string(rank) + ".so";
+
+ smpi_copy_file(executable_copy, target_executable, fdin_size, rank);
+ //if smpi/privatize-libs is set, duplicate pointed lib and link each executable copy to a different one.
+ std::string target_lib;
+ for (auto const& libpath : privatize_libs_paths){
+ //if we were given a full path, strip it
+ size_t index = libpath.find_last_of("/\\");
+ std::string libname;
+ if(index!=std::string::npos)
+ libname=libpath.substr(index+1);
+
+ if(not libname.empty()){
+ //load the library to add it to the local libs, to get the absolute path
+ struct stat fdin_stat2;
+ stat(libpath.c_str(), &fdin_stat2);
+ off_t fdin_size2 = fdin_stat2.st_size;
+
+ // 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();
+ target_lib = std::string(pad - std::to_string(rank).length(), '0')
+ +std::to_string(rank)+libname.substr(pad);
+ XBT_DEBUG("copy lib %s to %s, with size %ld", libpath.c_str(), target_lib.c_str(), fdin_size2);
+ smpi_copy_file(libpath, target_lib, fdin_size2, rank);
+
+ 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());
}
}
-#endif
- close(fdin);
- close(fdout);
+ rank++;
// Load the copy and resolve the entry point:
void* handle = dlopen(target_executable.c_str(), RTLD_LAZY | RTLD_LOCAL | RTLD_DEEPBIND);
int saved_errno = errno;
- if (simgrid::config::get_value<bool>("smpi/keep-temps") == false)
+ if (simgrid::config::get_value<bool>("smpi/keep-temps") == false){
unlink(target_executable.c_str());
+ if(not target_lib.empty())
+ unlink(target_lib.c_str());
+ }
if (handle == nullptr)
xbt_die("dlopen failed: %s (errno: %d -- %s)", 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");
-
smpi_run_entry_point(entry_point, args);
});
};
}
else {
- if (smpi_privatize_global_variables == SmpiPrivStrategies::Mmap)
+ if (smpi_privatize_global_variables == SmpiPrivStrategies::MMAP)
smpi_prepare_global_memory_segment();
// Load the dynamic library and resolve the entry point:
void* handle = dlopen(executable, RTLD_LAZY | RTLD_LOCAL);
smpi_entry_point_type entry_point = smpi_resolve_function(handle);
if (not entry_point)
xbt_die("main not found in %s", executable);
- if (smpi_privatize_global_variables == SmpiPrivStrategies::Mmap)
+ if (smpi_privatize_global_variables == SmpiPrivStrategies::MMAP)
smpi_backup_global_memory_segment();
// Execute the same entry point for each simulated process:
smpi_init_options();
smpi_global_init();
smpi_check_options();
- simgrid::s4u::onSimulationEnd.connect(TRACE_smpi_release);
+ simgrid::s4u::on_simulation_end.connect(TRACE_smpi_release);
}
void SMPI_finalize(){
