X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/22eeafc5748e8cb949138bd8323750d6e171d6b3..a3a56ef3595742d429fcfa43f66efde47ddfd25f:/src/smpi/internals/smpi_global.cpp diff --git a/src/smpi/internals/smpi_global.cpp b/src/smpi/internals/smpi_global.cpp index 75c8a9d894..0c709b15d7 100644 --- a/src/smpi/internals/smpi_global.cpp +++ b/src/smpi/internals/smpi_global.cpp @@ -3,7 +3,7 @@ /* 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" @@ -15,6 +15,9 @@ #include /* DBL_MAX */ #include #include +#if not defined(__APPLE__) +#include +#endif #include #if HAVE_SENDFILE @@ -53,6 +56,7 @@ 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 privatize_libs_paths; /** * Setting MPI_COMM_WORLD to MPI_COMM_UNINITIALIZED (it's a variable) * is important because the implementation of MPI_Comm checks @@ -180,7 +184,7 @@ void smpi_comm_copy_buffer_callback(smx_activity_t synchro, void *buff, size_t b 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(buff) >= smpi_data_exe_start) && (static_cast(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 !"); @@ -189,7 +193,7 @@ void smpi_comm_copy_buffer_callback(smx_activity_t synchro, void *buff, size_t b 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()); @@ -349,7 +353,7 @@ void smpi_global_destroy() 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(); } @@ -365,24 +369,24 @@ static void smpi_init_options(){ 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("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 @@ -391,11 +395,11 @@ static void smpi_init_options(){ std::string val = simgrid::config::get_value("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()); @@ -424,6 +428,7 @@ static int smpi_run_entry_point(smpi_entry_point_type entry_point, std::vector= 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(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); @@ -464,16 +521,15 @@ int smpi_main(const char* executable, int argc, char *argv[]) // 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; @@ -482,67 +538,94 @@ int smpi_main(const char* executable, int argc, char *argv[]) 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("smpi/privatize-libs"); + if(not libnames.empty()){ + //split option + std::vector 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 args) { return std::function([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(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()("smpi/keep-temps") == false) + if (simgrid::config::get_value("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); @@ -551,7 +634,7 @@ int smpi_main(const char* executable, int argc, char *argv[]) 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: