X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/b87fc0829538ec066fd077e6c30ee6270b8abd78..26cc914ea54fae16e353aa561b46fa6fa26d2ebc:/src/smpi/internals/smpi_global.cpp diff --git a/src/smpi/internals/smpi_global.cpp b/src/smpi/internals/smpi_global.cpp index f1226a27ea..ab3ba0396c 100644 --- a/src/smpi/internals/smpi_global.cpp +++ b/src/smpi/internals/smpi_global.cpp @@ -1,29 +1,22 @@ -/* Copyright (c) 2007-2017. The SimGrid Team. All rights reserved. */ +/* Copyright (c) 2007-2018. 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 "smpi_host.hpp" #include "mc/mc.h" -#include "simgrid/s4u/Mailbox.hpp" -#include "simgrid/s4u/Host.hpp" -#include "src/msg/msg_private.h" -#include "src/simix/smx_private.h" -#include "src/surf/surf_interface.hpp" -#include "SmpiHost.hpp" -#include "xbt/config.hpp" -#include "private.h" -#include "private.hpp" +#include "simgrid/s4u/Engine.hpp" #include "smpi_coll.hpp" -#include "smpi_comm.hpp" -#include "smpi_group.hpp" -#include "smpi_info.hpp" #include "smpi_process.hpp" +#include "src/msg/msg_private.hpp" +#include "src/simix/smx_private.hpp" +#include "xbt/config.hpp" #include /* DBL_MAX */ #include #include +#include #include -#include #if HAVE_SENDFILE #include @@ -49,20 +42,36 @@ struct papi_process_data { papi_counter_t counter_data; int event_set; }; - #endif + +using simgrid::s4u::Actor; +using simgrid::s4u::ActorPtr; std::unordered_map location2speedup; -simgrid::smpi::Process **process_data = nullptr; +static std::map process_data; int process_count = 0; +static int smpi_exit_status = 0; int smpi_universe_size = 0; -int* index_to_process_data = nullptr; extern double smpi_total_benched_time; xbt_os_timer_t global_timer; +static char* privatize_lib_path=nullptr; +/** + * 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 tag is generated). +static const std::string smpi_default_instance_name("smpirun"); static simgrid::config::Flag smpi_wtime_sleep( "smpi/wtime", "Minimum time to inject inside a call to MPI_Wtime", 0.0); static simgrid::config::Flag smpi_init_sleep( @@ -77,16 +86,16 @@ int smpi_process_count() simgrid::smpi::Process* smpi_process() { - smx_actor_t me = SIMIX_process_self(); + ActorPtr me = Actor::self(); if (me == nullptr) // This happens sometimes (eg, when linking against NS3 because it pulls openMPI...) return nullptr; - simgrid::msg::ActorExt* msgExt = static_cast(me->userdata); + simgrid::msg::ActorExt* msgExt = static_cast(me->get_impl()->getUserData()); return static_cast(msgExt->data); } -simgrid::smpi::Process* smpi_process_remote(int index) +simgrid::smpi::Process* smpi_process_remote(ActorPtr actor) { - return process_data[index_to_process_data[index]]; + return process_data.at(actor); } MPI_Comm smpi_process_comm_self(){ @@ -98,7 +107,7 @@ void smpi_process_init(int *argc, char ***argv){ } int smpi_process_index(){ - return smpi_process()->index(); + return simgrid::s4u::this_actor::get_pid(); } void * smpi_process_get_user_data(){ @@ -125,19 +134,19 @@ void smpi_comm_set_copy_data_callback(void (*callback) (smx_activity_t, void*, s static void print(std::vector> vec) { std::fprintf(stderr, "{"); - for (auto elt : vec) { + for (auto const& elt : vec) { std::fprintf(stderr, "(0x%zx, 0x%zx),", elt.first, elt.second); } std::fprintf(stderr, "}\n"); } static void memcpy_private(void* dest, const void* src, std::vector>& private_blocks) { - for (auto block : private_blocks) + for (auto const& block : private_blocks) memcpy((uint8_t*)dest+block.first, (uint8_t*)src+block.first, block.second-block.first); } static void check_blocks(std::vector> &private_blocks, size_t buff_size) { - for (auto block : private_blocks) + for (auto const& block : private_blocks) xbt_assert(block.first <= block.second && block.second <= buff_size, "Oops, bug in shared malloc."); } @@ -173,24 +182,19 @@ 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 == SMPI_PRIVATIZE_MMAP) && (static_cast(buff) >= smpi_start_data_exe) - && (static_cast(buff) < smpi_start_data_exe + smpi_size_data_exe ) - ){ - XBT_DEBUG("Privatization : We are copying from a zone inside global memory... Saving data to temp buffer !"); - - smpi_switch_data_segment( - static_cast((static_cast(comm->src_proc->userdata)->data)) - ->index()); - tmpbuff = static_cast(xbt_malloc(buff_size)); - memcpy_private(tmpbuff, buff, private_blocks); + 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 !"); + smpi_switch_data_segment(comm->src_proc->iface()); + tmpbuff = static_cast(xbt_malloc(buff_size)); + memcpy_private(tmpbuff, buff, private_blocks); } - if((smpi_privatize_global_variables == SMPI_PRIVATIZE_MMAP) && ((char*)comm->dst_buff >= smpi_start_data_exe) - && ((char*)comm->dst_buff < smpi_start_data_exe + smpi_size_data_exe )){ - XBT_DEBUG("Privatization : We are copying to a zone inside global memory - Switch data segment"); - smpi_switch_data_segment( - static_cast((static_cast(comm->dst_proc->userdata)->data)) - ->index()); + 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_DEBUG("Copying %zu bytes from %p to %p", buff_size, tmpbuff,comm->dst_buff); memcpy_private(comm->dst_buff, tmpbuff, private_blocks); @@ -212,38 +216,38 @@ void smpi_comm_null_copy_buffer_callback(smx_activity_t comm, void *buff, size_t /* nothing done in this version */ } -static void smpi_check_options(){ +static void smpi_check_options() +{ //check correctness of MPI parameters - xbt_assert(xbt_cfg_get_int("smpi/async-small-thresh") <= xbt_cfg_get_int("smpi/send-is-detached-thresh")); + xbt_assert(simgrid::config::get_value("smpi/async-small-thresh") <= + simgrid::config::get_value("smpi/send-is-detached-thresh")); - if (xbt_cfg_is_default_value("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:\" to set its value." - "Check http://simgrid.org/simgrid/latest/doc/options.html#options_smpi_bench for more information."); - } + 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:\" to set its value." + "Check http://simgrid.org/simgrid/latest/doc/options.html#options_smpi_bench for more information."); + } - xbt_assert(xbt_cfg_get_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."); + xbt_assert(simgrid::config::get_value("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 process_data != nullptr; + return not process_data.empty(); } void smpi_global_init() { - MPI_Group group; - if (not MC_is_active()) { global_timer = xbt_os_timer_new(); xbt_os_walltimer_start(global_timer); } - if (xbt_cfg_get_string("smpi/comp-adjustment-file")[0] != '\0') { - std::string filename {xbt_cfg_get_string("smpi/comp-adjustment-file")}; + std::string filename = simgrid::config::get_value("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()); @@ -269,7 +273,7 @@ void smpi_global_init() // and the (computed) event_set. std::map units2papi_setup; - if (xbt_cfg_get_string("smpi/papi-events")[0] != '\0') { + if (not simgrid::config::get_value("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 %i", @@ -277,12 +281,12 @@ void smpi_global_init() typedef boost::tokenizer> Tokenizer; boost::char_separator separator_units(";"); - std::string str = std::string(xbt_cfg_get_string("smpi/papi-events")); + std::string str = simgrid::config::get_value("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& unit_it : tokens) { + for (auto const& unit_it : tokens) { boost::char_separator separator_events(":"); Tokenizer event_tokens(unit_it, separator_events); @@ -330,64 +334,16 @@ void smpi_global_init() } } #endif - - int smpirun = 0; - msg_bar_t finalization_barrier = nullptr; - if (process_count == 0){ - process_count = SIMIX_process_count(); - smpirun=1; - finalization_barrier = MSG_barrier_init(process_count); - } - smpi_universe_size = process_count; - process_data = new simgrid::smpi::Process*[process_count]; - for (int i = 0; i < process_count; i++) { - process_data[i] = new simgrid::smpi::Process(i, finalization_barrier); - } - //if the process was launched through smpirun script we generate a global mpi_comm_world - //if not, we let MPI_COMM_NULL, and the comm world will be private to each mpi instance - if (smpirun) { - group = new simgrid::smpi::Group(process_count); - MPI_COMM_WORLD = new simgrid::smpi::Comm(group, nullptr); - MPI_Attr_put(MPI_COMM_WORLD, MPI_UNIVERSE_SIZE, reinterpret_cast(process_count)); - - for (int i = 0; i < process_count; i++) - group->set_mapping(i, i); - } } void smpi_global_destroy() { - int count = smpi_process_count(); - smpi_bench_destroy(); smpi_shared_destroy(); - if (MPI_COMM_WORLD != MPI_COMM_UNINITIALIZED){ - delete MPI_COMM_WORLD->group(); - MSG_barrier_destroy(process_data[0]->finalization_barrier()); - }else{ - smpi_deployment_cleanup_instances(); - } - for (int i = 0; i < count; i++) { - if(process_data[i]->comm_self()!=MPI_COMM_NULL){ - simgrid::smpi::Comm::destroy(process_data[i]->comm_self()); - } - if(process_data[i]->comm_intra()!=MPI_COMM_NULL){ - simgrid::smpi::Comm::destroy(process_data[i]->comm_intra()); - } - xbt_os_timer_free(process_data[i]->timer()); - xbt_mutex_destroy(process_data[i]->mailboxes_mutex()); - delete process_data[i]; - } - delete[] process_data; - process_data = nullptr; - - if (MPI_COMM_WORLD != MPI_COMM_UNINITIALIZED){ - MPI_COMM_WORLD->cleanup_smp(); - MPI_COMM_WORLD->cleanup_attr(); - if(simgrid::smpi::Colls::smpi_coll_cleanup_callback!=nullptr) - simgrid::smpi::Colls::smpi_coll_cleanup_callback(); - delete MPI_COMM_WORLD; - } + 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; @@ -395,92 +351,57 @@ void smpi_global_destroy() xbt_os_timer_free(global_timer); } - xbt_free(index_to_process_data); - if(smpi_privatize_global_variables == SMPI_PRIVATIZE_MMAP) + if (smpi_privatize_global_variables == SmpiPrivStrategies::MMAP) smpi_destroy_global_memory_segments(); smpi_free_static(); } -extern "C" { - -static void smpi_init_logs(){ - - /* Connect log categories. See xbt/log.c */ - - XBT_LOG_CONNECT(smpi); /* Keep this line as soon as possible in this function: xbt_log_appender_file.c depends on it - DO NOT connect this in XBT or so, or it will be useless to xbt_log_appender_file.c */ - XBT_LOG_CONNECT(instr_smpi); - XBT_LOG_CONNECT(smpi_bench); - XBT_LOG_CONNECT(smpi_coll); - XBT_LOG_CONNECT(smpi_colls); - XBT_LOG_CONNECT(smpi_comm); - XBT_LOG_CONNECT(smpi_datatype); - XBT_LOG_CONNECT(smpi_dvfs); - XBT_LOG_CONNECT(smpi_group); - XBT_LOG_CONNECT(smpi_host); - XBT_LOG_CONNECT(smpi_kernel); - XBT_LOG_CONNECT(smpi_mpi); - XBT_LOG_CONNECT(smpi_memory); - XBT_LOG_CONNECT(smpi_op); - XBT_LOG_CONNECT(smpi_pmpi); - XBT_LOG_CONNECT(smpi_process); - XBT_LOG_CONNECT(smpi_request); - XBT_LOG_CONNECT(smpi_replay); - XBT_LOG_CONNECT(smpi_rma); - XBT_LOG_CONNECT(smpi_shared); - XBT_LOG_CONNECT(smpi_utils); -} -} - 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 = xbt_cfg_get_double("smpi/cpu-threshold"); - smpi_host_speed = xbt_cfg_get_double("smpi/host-speed"); - const char* smpi_privatize_option = xbt_cfg_get_string("smpi/privatization"); - if (std::strcmp(smpi_privatize_option, "no") == 0) - smpi_privatize_global_variables = SMPI_PRIVATIZE_NONE; - else if (std::strcmp(smpi_privatize_option, "yes") == 0) - smpi_privatize_global_variables = SMPI_PRIVATIZE_DEFAULT; - else if (std::strcmp(smpi_privatize_option, "mmap") == 0) - smpi_privatize_global_variables = SMPI_PRIVATIZE_MMAP; - else if (std::strcmp(smpi_privatize_option, "dlopen") == 0) - smpi_privatize_global_variables = SMPI_PRIVATIZE_DLOPEN; - - // Some compatibility stuff: - else if (std::strcmp(smpi_privatize_option, "1") == 0) - smpi_privatize_global_variables = SMPI_PRIVATIZE_DEFAULT; - else if (std::strcmp(smpi_privatize_option, "0") == 0) - smpi_privatize_global_variables = SMPI_PRIVATIZE_NONE; - - else - xbt_die("Invalid value for smpi/privatization: '%s'", smpi_privatize_option); - + // 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("smpi/cpu-threshold"); + smpi_host_speed = simgrid::config::get_value("smpi/host-speed"); + 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; + 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()); + + if (not SMPI_switch_data_segment) { + XBT_DEBUG("Running without smpi_main(); disable smpi/privatization."); + smpi_privatize_global_variables = SmpiPrivStrategies::NONE; + } #if defined(__FreeBSD__) - if (smpi_privatize_global_variables == SMPI_PRIVATIZE_MMAP) { - XBT_INFO("Mixing mmap privatization is broken on FreeBSD, switching to dlopen privatization instead."); - smpi_privatize_global_variables = SMPI_PRIVATIZE_DLOPEN; - } + 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; + } #endif - if (smpi_cpu_threshold < 0) - smpi_cpu_threshold = DBL_MAX; - - char* val = xbt_cfg_get_string("smpi/shared-malloc"); - if (not strcasecmp(val, "yes") || not strcmp(val, "1") || not strcasecmp(val, "on") || - not strcasecmp(val, "global")) { - smpi_cfg_shared_malloc = shmalloc_global; - } else if (not strcasecmp(val, "local")) { - smpi_cfg_shared_malloc = shmalloc_local; - } else if (not strcasecmp(val, "no") || not strcmp(val, "0") || not strcasecmp(val, "off")) { - smpi_cfg_shared_malloc = shmalloc_none; - } else { - xbt_die("Invalid value '%s' for option smpi/shared-malloc. Possible values: 'on' or 'global', 'local', 'off'", - val); - } + if (smpi_cpu_threshold < 0) + smpi_cpu_threshold = DBL_MAX; + + std::string val = simgrid::config::get_value("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 smpi_entry_point_type; @@ -499,11 +420,13 @@ static int smpi_run_entry_point(smpi_entry_point_type entry_point, std::vectorset_return_value(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) { @@ -524,6 +447,56 @@ 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(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); +} + +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; +} + int smpi_main(const char* executable, int argc, char *argv[]) { srand(SMPI_RAND_SEED); @@ -541,17 +514,18 @@ int smpi_main(const char* executable, int argc, char *argv[]) SMPI_switch_data_segment = &smpi_switch_data_segment; - simgrid::s4u::Host::onCreation.connect([](simgrid::s4u::Host& host) { - host.extension_set(new simgrid::smpi::SmpiHost(&host)); - }); + // 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::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 == SMPI_PRIVATIZE_DLOPEN) { + if (smpi_privatize_global_variables == SmpiPrivStrategies::DLOPEN) { std::string executable_copy = executable; @@ -560,74 +534,89 @@ 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 libname = simgrid::config::get_value("smpi/privatize-lib"); + std::string target_lib; + if(not libname.empty()){ + //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()); + 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-lib", fullpath); + else + XBT_DEBUG("Extra lib to privatize found : %s", fullpath); + privatize_lib_path=strdup(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", 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()); - -#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 - XBT_VERB("Copy %d bytes into %s", static_cast(fdin_size), target_executable.c_str()); - 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-lib is set, duplicate pointed lib and link each executable to a different one. + //TODO : extend to multiple libs + std::string libname = simgrid::config::get_value("smpi/privatize-lib"); + //if we were given a full path, strip it + size_t index = libname.find_last_of("/\\"); + if(index!=std::string::npos) + libname=libname.substr(index+1); + std::string target_lib; + if(not libname.empty()){ + //load the library to add it to the local libs, to get the absolute path + struct stat fdin_stat2; + stat(privatize_lib_path, &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 0s and the rank. + target_lib = std::string(libname.length() - std::to_string(rank).length(), '0')+std::to_string(rank); + XBT_DEBUG("copy lib %s to %s, with size %zd", privatize_lib_path, target_lib.c_str(), fdin_size2); + smpi_copy_file(privatize_lib_path, 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); - if (xbt_cfg_get_boolean("smpi/keep-temps") == false) + int saved_errno = errno; + 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(), errno, strerror(errno)); + 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) + smpi_prepare_global_memory_segment(); // Load the dynamic library and resolve the entry point: - void* handle = dlopen(executable, RTLD_LAZY | RTLD_LOCAL | RTLD_DEEPBIND); + void* handle = dlopen(executable, RTLD_LAZY | RTLD_LOCAL); if (handle == nullptr) xbt_die("dlopen failed for %s: %s (errno: %d -- %s)", executable, 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); - // TODO, register the executable for SMPI privatization + if (smpi_privatize_global_variables == SmpiPrivStrategies::MMAP) + smpi_backup_global_memory_segment(); // Execute the same entry point for each simulated process: simix_global->default_function = [entry_point](std::vector args) { @@ -635,12 +624,15 @@ int smpi_main(const char* executable, int argc, char *argv[]) smpi_run_entry_point(entry_point, args); }); }; - } + SMPI_init(); SIMIX_launch_application(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; - SMPI_init(); /* Clean IO before the run */ fflush(stdout); @@ -653,7 +645,7 @@ int smpi_main(const char* executable, int argc, char *argv[]) SIMIX_run(); xbt_os_walltimer_stop(global_timer); - if (xbt_cfg_get_boolean("smpi/display-timing")){ + if (simgrid::config::get_value("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" @@ -665,31 +657,30 @@ int smpi_main(const char* executable, int argc, char *argv[]) "You may want to use sampling functions or trace replay to reduce this."); } } - int count = smpi_process_count(); - int ret = 0; - for (int i = 0; i < count; i++) { - if(process_data[i]->return_value()!=0){ - ret=process_data[i]->return_value();//return first non 0 value - break; - } - } smpi_global_destroy(); - TRACE_end(); - - return ret; + return smpi_exit_status; } // Called either directly from the user code, or from the code called by smpirun void SMPI_init(){ - smpi_init_logs(); + simgrid::s4u::Actor::on_creation.connect([](simgrid::s4u::ActorPtr actor) { + if (not actor->is_daemon()) { + process_data.insert({actor, new simgrid::smpi::Process(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(); smpi_global_init(); smpi_check_options(); - TRACE_smpi_alloc(); - simgrid::surf::surfExitCallbacks.connect(TRACE_smpi_release); - if(smpi_privatize_global_variables == SMPI_PRIVATIZE_MMAP) - smpi_initialize_global_memory_segments(); + simgrid::s4u::on_simulation_end.connect(TRACE_smpi_release); } void SMPI_finalize(){