--- /dev/null
+/* Copyright (c) 2008-2019. 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 "include/xbt/config.hpp"
+#include "private.hpp"
+#include "smpi_coll.hpp"
+#include "src/simix/smx_private.hpp"
+#include <cfloat> /* DBL_MAX */
+#include <boost/algorithm/string.hpp> /* trim */
+#include <boost/tokenizer.hpp>
+
+
+#if defined(__APPLE__)
+# include <AvailabilityMacros.h>
+# ifndef MAC_OS_X_VERSION_10_12
+# define MAC_OS_X_VERSION_10_12 101200
+# endif
+constexpr bool HAVE_WORKING_MMAP = (MAC_OS_X_VERSION_MIN_REQUIRED >= MAC_OS_X_VERSION_10_12);
+#elif defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__sun) || defined(__HAIKU__)
+constexpr bool HAVE_WORKING_MMAP = false;
+#else
+constexpr bool HAVE_WORKING_MMAP = true;
+#endif
+
+bool _smpi_options_initialized=false;
+SharedMallocType _smpi_cfg_shared_malloc = SharedMallocType::GLOBAL;
+SmpiPrivStrategies _smpi_cfg_privatization = SmpiPrivStrategies::NONE;
+
+XBT_LOG_NEW_DEFAULT_SUBCATEGORY(smpi_config, smpi, "Logging specific to SMPI (config)");
+
+simgrid::config::Flag<double> _smpi_cfg_host_speed{
+ "smpi/host-speed", "Speed of the host running the simulation (in flop/s). "
+ "Used to bench the operations.", 20000.0,
+ [](const double& val) { xbt_assert(val > 0.0, "Invalid value (%f) for 'smpi/host-speed': it must be positive.", val); }};
+
+simgrid::config::Flag<bool> _smpi_cfg_simulate_computation{
+ "smpi/simulate-computation", "Whether the computational part of the simulated application should be simulated.",
+ true};
+simgrid::config::Flag<std::string> _smpi_cfg_shared_malloc_string{
+ "smpi/shared-malloc", "Whether SMPI_SHARED_MALLOC is enabled. Disable it for debugging purposes.", "global",
+ [](const std::string& val) {
+ 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());
+ }
+ } };
+
+simgrid::config::Flag<double> _smpi_cfg_cpu_threshold{
+ "smpi/cpu-threshold", "Minimal computation time (in seconds) not discarded, or -1 for infinity.", 1e-6,
+ [](const double& val){
+ if (val < 0)
+ _smpi_cfg_cpu_threshold = DBL_MAX;
+ }};
+
+simgrid::config::Flag<int> _smpi_cfg_async_small_thresh{"smpi/async-small-thresh",
+ "Maximal size of messages that are to be sent asynchronously, without waiting for the receiver",
+ 0};
+simgrid::config::Flag<int> _smpi_cfg_detached_send_thresh{"smpi/send-is-detached-thresh",
+ "Threshold of message size where MPI_Send stops behaving like MPI_Isend and becomes MPI_Ssend",
+ 65536};
+simgrid::config::Flag<bool> _smpi_cfg_grow_injected_times{"smpi/grow-injected-times",
+ "Whether we want to make the injected time in MPI_Iprobe and MPI_Test grow, to "
+ "allow faster simulation. This can make simulation less precise, though.",
+ true};
+simgrid::config::Flag<double> _smpi_cfg_iprobe_cpu_usage{"smpi/iprobe-cpu-usage",
+ "Maximum usage of CPUs by MPI_Iprobe() calls. We've observed that MPI_Iprobes "
+ "consume significantly less power than the maximum of a specific application. "
+ "This value is then (Iprobe_Usage/Max_Application_Usage).",
+ 1.0};
+
+simgrid::config::Flag<bool> _smpi_cfg_trace_call_location{"smpi/trace-call-location",
+ "Should filename and linenumber of MPI calls be traced?", false};
+simgrid::config::Flag<bool> _smpi_cfg_trace_call_use_absolute_path{"smpi/trace-call-use-absolute-path",
+ "Should filenames for trace-call tracing be absolute or not?", false};
+simgrid::config::Flag<std::string> _smpi_cfg_comp_adjustment_file{"smpi/comp-adjustment-file",
+ "A file containing speedups or slowdowns for some parts of the code.",
+ "", [](const std::string& filename){
+ if (not filename.empty()) {
+ std::ifstream fstream(filename);
+ xbt_assert(fstream.is_open(), "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
+ simgrid::config::Flag<std::string> _smpi_cfg_papi_events_file{"smpi/papi-events",
+ "This switch enables tracking the specified counters with PAPI", ""};
+#endif
+
+simgrid::config::Flag<double> _smpi_cfg_auto_shared_malloc_thresh("smpi/auto-shared-malloc-thresh",
+ "Threshold size for the automatic sharing of memory",
+ 0);
+
+double smpi_cfg_host_speed(){
+ return _smpi_cfg_host_speed;
+}
+
+bool smpi_cfg_simulate_computation(){
+ return _smpi_cfg_simulate_computation;
+}
+
+SharedMallocType smpi_cfg_shared_malloc(){
+ return _smpi_cfg_shared_malloc;
+}
+
+double smpi_cfg_cpu_thresh(){
+ return _smpi_cfg_cpu_threshold;
+}
+
+SmpiPrivStrategies smpi_cfg_privatization(){
+ return _smpi_cfg_privatization;
+}
+
+int smpi_cfg_async_small_thresh(){
+ return _smpi_cfg_async_small_thresh;
+}
+
+int smpi_cfg_detached_send_thresh(){
+ return _smpi_cfg_detached_send_thresh;
+}
+
+bool smpi_cfg_grow_injected_times(){
+ return _smpi_cfg_grow_injected_times;
+}
+
+double smpi_cfg_iprobe_cpu_usage(){
+ return _smpi_cfg_iprobe_cpu_usage;
+}
+
+bool smpi_cfg_trace_call_location(){
+ return _smpi_cfg_trace_call_location;
+}
+
+bool smpi_cfg_trace_call_use_absolute_path(){
+ return _smpi_cfg_trace_call_use_absolute_path;
+}
+
+std::string smpi_cfg_comp_adjustment_file(){
+ return _smpi_cfg_comp_adjustment_file;
+}
+#if HAVE_PAPI
+std::string smpi_cfg_papi_events_file(){
+ return _smpi_cfg_papi_events_file;
+}
+#endif
+double smpi_cfg_auto_shared_malloc_thresh(){
+ return _smpi_cfg_auto_shared_malloc_thresh;
+}
+
+void smpi_init_options(){
+ // return if already called
+ if(_smpi_options_initialized)
+ return;
+ simgrid::config::declare_flag<bool>("smpi/display-timing", "Whether we should display the timing after simulation.", false);
+ simgrid::config::declare_flag<bool>("smpi/keep-temps", "Whether we should keep the generated temporary files.", false);
+
+ simgrid::config::declare_flag<std::string>("smpi/coll-selector", "Which collective selector to use", "default");
+ simgrid::config::declare_flag<std::string>("smpi/gather", "Which collective to use for gather", "");
+ simgrid::config::declare_flag<std::string>("smpi/allgather", "Which collective to use for allgather", "");
+ simgrid::config::declare_flag<std::string>("smpi/barrier", "Which collective to use for barrier", "");
+ simgrid::config::declare_flag<std::string>("smpi/reduce_scatter", "Which collective to use for reduce_scatter", "");
+ simgrid::config::declare_flag<std::string>("smpi/scatter", "Which collective to use for scatter", "");
+ simgrid::config::declare_flag<std::string>("smpi/allgatherv", "Which collective to use for allgatherv", "");
+ simgrid::config::declare_flag<std::string>("smpi/allreduce", "Which collective to use for allreduce", "");
+ simgrid::config::declare_flag<std::string>("smpi/alltoall", "Which collective to use for alltoall", "");
+ simgrid::config::declare_flag<std::string>("smpi/alltoallv", "Which collective to use for alltoallv", "");
+ simgrid::config::declare_flag<std::string>("smpi/bcast", "Which collective to use for bcast", "");
+ simgrid::config::declare_flag<std::string>("smpi/reduce", "Which collective to use for reduce", "");
+
+ const char* default_privatization = std::getenv("SMPI_PRIVATIZATION");
+ if (default_privatization == nullptr)
+ default_privatization = "no";
+
+
+ simgrid::config::declare_flag<std::string>( "smpi/privatization",
+ "How we should privatize global variable at runtime (no, yes, mmap, dlopen).",
+ default_privatization, [](const std::string& smpi_privatize_option){
+ if (smpi_privatize_option == "no" || smpi_privatize_option == "0")
+ _smpi_cfg_privatization = SmpiPrivStrategies::NONE;
+ else if (smpi_privatize_option == "yes" || smpi_privatize_option == "1")
+ _smpi_cfg_privatization = SmpiPrivStrategies::DEFAULT;
+ else if (smpi_privatize_option == "mmap")
+ _smpi_cfg_privatization = SmpiPrivStrategies::MMAP;
+ else if (smpi_privatize_option == "dlopen")
+ _smpi_cfg_privatization = 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_cfg_privatization = SmpiPrivStrategies::NONE;
+ }
+ if (not HAVE_WORKING_MMAP && _smpi_cfg_privatization == SmpiPrivStrategies::MMAP) {
+ XBT_INFO("mmap privatization is broken on this platform, switching to dlopen privatization instead.");
+ _smpi_cfg_privatization = SmpiPrivStrategies::DLOPEN;
+ }
+ });
+
+ simgrid::config::declare_flag<std::string>("smpi/privatize-libs",
+ "Add libraries (; separated) to privatize (libgfortran for example)."
+ "You need to provide the full names of the files (libgfortran.so.4), or its full path",
+ "");
+ simgrid::config::declare_flag<double>("smpi/shared-malloc-blocksize",
+ "Size of the bogus file which will be created for global shared allocations",
+ 1UL << 20);
+ simgrid::config::declare_flag<std::string>("smpi/shared-malloc-hugepage",
+ "Path to a mounted hugetlbfs, to use huge pages with shared malloc.",
+ "");
+
+ simgrid::config::declare_flag<std::string>(
+ "smpi/os", "Small messages timings (MPI_Send minimum time for small messages)", "0:0:0:0:0");
+ simgrid::config::declare_flag<std::string>(
+ "smpi/ois", "Small messages timings (MPI_Isend minimum time for small messages)", "0:0:0:0:0");
+ simgrid::config::declare_flag<std::string>(
+ "smpi/or", "Small messages timings (MPI_Recv minimum time for small messages)", "0:0:0:0:0");
+ simgrid::config::alias("smpi/display-timing", {"smpi/display_timing"});
+ simgrid::config::alias("smpi/coll-selector", {"smpi/coll_selector"});
+ simgrid::config::alias("smpi/simulate-computation", {"smpi/simulate_computation"});
+ simgrid::config::alias("smpi/shared-malloc", {"smpi/use_shared_malloc", "smpi/use-shared-malloc"});
+ simgrid::config::alias("smpi/host-speed", {"smpi/running_power", "smpi/running-power"});
+ simgrid::config::alias("smpi/cpu-threshold", {"smpi/cpu_threshold"});
+ simgrid::config::alias("smpi/async-small-thresh", {"smpi/async_small_thres", "smpi/async_small_thresh"});
+ simgrid::config::alias("smpi/send-is-detached-thresh", {"smpi/send_is_detached_thres", "smpi/send_is_detached_thresh"});
+ simgrid::config::alias("smpi/privatization", {"smpi/privatize_global_variables", "smpi/privatize-global-variables"});
+ simgrid::config::alias("smpi/reduce_scatter", {"smpi/reduce-scatter"});
+ _smpi_options_initialized=true;
+
+}
+
+void smpi_check_options()
+{
+#if SIMGRID_HAVE_MC
+ if (MC_is_active()) {
+ if (_sg_mc_buffering == "zero")
+ simgrid::config::set_value<int>("smpi/send-is-detached-thresh", 0);
+ else if (_sg_mc_buffering == "infty")
+ simgrid::config::set_value<int>("smpi/send-is-detached-thresh", INT_MAX);
+ else
+ THROW_IMPOSSIBLE;
+ }
+#endif
+
+ xbt_assert(smpi_cfg_async_small_thresh() <= smpi_cfg_detached_send_thresh(),
+ "smpi/async-small-thresh (=%d) should be smaller or equal to smpi/send-is-detached-thresh (=%d)",
+ smpi_cfg_async_small_thresh(),
+ smpi_cfg_detached_send_thresh());
+
+ if (simgrid::config::is_default("smpi/host-speed") && not MC_is_active()) {
+ 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 "
+ "https://simgrid.org/doc/latest/Configuring_SimGrid.html#automatic-benchmarking-of-smpi-code for more "
+ "information.");
+ }
+
+ simgrid::smpi::colls::set_collectives();
+ simgrid::smpi::colls::smpi_coll_cleanup_callback = nullptr;
+}
+
