-/* Copyright (c) 2007, 2009-2017. The SimGrid Team. All rights reserved. */
+/* Copyright (c) 2007-2019. 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 "private.h"
+#include "getopt.h"
#include "private.hpp"
+#include "simgrid/host.h"
#include "simgrid/modelchecker.h"
+#include "simgrid/s4u/Exec.hpp"
#include "smpi_comm.hpp"
-#include "smpi_process.hpp"
#include "src/internal_config.h"
-#include "src/mc/mc_replay.h"
+#include "src/mc/mc_replay.hpp"
+#include "xbt/config.hpp"
+
+#include "src/smpi/include/smpi_actor.hpp"
#include <unordered_map>
#ifndef WIN32
XBT_LOG_NEW_DEFAULT_SUBCATEGORY(smpi_bench, smpi, "Logging specific to SMPI (benchmarking)");
+static simgrid::config::Flag<double>
+ smpi_wtime_sleep("smpi/wtime",
+ "Minimum time to inject inside a call to MPI_Wtime(), gettimeofday() and clock_gettime()",
+ 1e-8 /* Documented to be 10 ns */);
+
double smpi_cpu_threshold = -1;
double smpi_host_speed;
-shared_malloc_type smpi_cfg_shared_malloc = shmalloc_global;
+SharedMallocType smpi_cfg_shared_malloc = SharedMallocType::GLOBAL;
double smpi_total_benched_time = 0;
-smpi_privatization_region_t smpi_privatization_regions;
-extern "C" XBT_PUBLIC(void) smpi_execute_flops_(double *flops);
+extern "C" XBT_PUBLIC void smpi_execute_flops_(double* flops);
+
void smpi_execute_flops_(double *flops)
{
smpi_execute_flops(*flops);
}
-extern "C" XBT_PUBLIC(void) smpi_execute_(double *duration);
+extern "C" XBT_PUBLIC void smpi_execute_(double* duration);
void smpi_execute_(double *duration)
{
smpi_execute(*duration);
}
void smpi_execute_flops(double flops) {
+ xbt_assert(flops >= 0, "You're trying to execute a negative amount of flops (%f)!", flops);
XBT_DEBUG("Handle real computation time: %f flops", flops);
- smx_activity_t action = simcall_execution_start("computation", flops, 1, 0);
- simcall_set_category (action, TRACE_internal_smpi_get_category());
- simcall_execution_wait(action);
- smpi_switch_data_segment(smpi_process()->index());
+ simgrid::s4u::this_actor::exec_init(flops)
+ ->set_name("computation")
+ ->set_tracing_category(smpi_process()->get_tracing_category())
+ ->start()
+ ->wait();
+ smpi_switch_data_segment(simgrid::s4u::Actor::self());
}
void smpi_execute(double duration)
if (duration >= smpi_cpu_threshold) {
XBT_DEBUG("Sleep for %g to handle real computation time", duration);
double flops = duration * smpi_host_speed;
- int rank = smpi_process()->index();
- instr_extra_data extra = xbt_new0(s_instr_extra_data_t,1);
- extra->type=TRACING_COMPUTING;
- extra->comp_size=flops;
- TRACE_smpi_computing_in(rank, extra);
+ int rank = simgrid::s4u::this_actor::get_pid();
+ TRACE_smpi_computing_in(rank, flops);
smpi_execute_flops(flops);
void smpi_execute_benched(double duration)
{
smpi_bench_end();
- smpi_execute(duration);
+ double speed = sg_host_speed(sg_host_self());
+ smpi_execute_flops(duration*speed);
smpi_bench_begin();
}
void smpi_bench_begin()
{
- if (smpi_privatize_global_variables == SMPI_PRIVATIZE_MMAP) {
- smpi_switch_data_segment(smpi_process()->index());
+ if (smpi_privatize_global_variables == SmpiPrivStrategies::MMAP) {
+ smpi_switch_data_segment(simgrid::s4u::Actor::self());
}
if (MC_is_active() || MC_record_replay_is_active())
return;
#if HAVE_PAPI
- if (xbt_cfg_get_string("smpi/papi-events")[0] != '\0') {
+ if (not simgrid::config::get_value<std::string>("smpi/papi-events").empty()) {
int event_set = smpi_process()->papi_event_set();
// PAPI_start sets everything to 0! See man(3) PAPI_start
- if (PAPI_LOW_LEVEL_INITED == PAPI_is_initialized()) {
- if (PAPI_start(event_set) != PAPI_OK) {
- // TODO This needs some proper handling.
- XBT_CRITICAL("Could not start PAPI counters.\n");
- xbt_die("Error.");
- }
+ if (PAPI_LOW_LEVEL_INITED == PAPI_is_initialized() && PAPI_start(event_set) != PAPI_OK) {
+ // TODO This needs some proper handling.
+ XBT_CRITICAL("Could not start PAPI counters.\n");
+ xbt_die("Error.");
}
}
#endif
* An MPI function has been called and now is the right time to update
* our PAPI counters for this process.
*/
- if (xbt_cfg_get_string("smpi/papi-events")[0] != '\0') {
+ if (not simgrid::config::get_value<std::string>("smpi/papi-events").empty()) {
papi_counter_t& counter_data = smpi_process()->papi_counters();
int event_set = smpi_process()->papi_event_set();
std::vector<long long> event_values = std::vector<long long>(counter_data.size());
} else {
for (unsigned int i = 0; i < counter_data.size(); i++) {
counter_data[i].second += event_values[i];
- // XBT_DEBUG("[%i] PAPI: Counter %s: Value is now %lli (got increment by %lli\n", smpi_process()->index(),
- // counter_data[i].first.c_str(), counter_data[i].second, event_values[i]);
}
}
}
xbt_die("Aborting.");
}
- if (xbt_cfg_get_string("smpi/comp-adjustment-file")[0] != '\0') { // Maybe we need to artificially speed up or slow
- // down our computation based on our statistical analysis.
+ // Maybe we need to artificially speed up or slow down our computation based on our statistical analysis.
+ if (simgrid::config::get_value<std::string>("smpi/comp-adjustment-file")[0] != '\0') {
smpi_trace_call_location_t* loc = smpi_process()->call_location();
std::string key = loc->get_composed_key();
}
// Simulate the benchmarked computation unless disabled via command-line argument
- if (xbt_cfg_get_boolean("smpi/simulate-computation")) {
+ if (simgrid::config::get_value<bool>("smpi/simulate-computation")) {
smpi_execute(xbt_os_timer_elapsed(timer)/speedup);
}
#if HAVE_PAPI
- if (xbt_cfg_get_string("smpi/papi-events")[0] != '\0' && TRACE_smpi_is_enabled()) {
- char container_name[INSTR_DEFAULT_STR_SIZE];
- smpi_container(smpi_process()->index(), container_name, INSTR_DEFAULT_STR_SIZE);
- container_t container = PJ_container_get(container_name);
+ if (not simgrid::config::get_value<std::string>("smpi/papi-events").empty() && TRACE_smpi_is_enabled()) {
+ container_t container =
+ simgrid::instr::Container::by_name(std::string("rank-") + std::to_string(simgrid::s4u::this_actor::get_pid()));
papi_counter_t& counter_data = smpi_process()->papi_counters();
for (auto const& pair : counter_data) {
- new_pajeSetVariable(surf_get_clock(), container,
- PJ_type_get(/* countername */ pair.first.c_str(), container->type), pair.second);
+ simgrid::instr::VariableType* variable = static_cast<simgrid::instr::VariableType*>(container->type_->by_name(pair.first));
+ variable->set_event(SIMIX_get_clock(), pair.second);
}
}
#endif
smpi_total_benched_time += xbt_os_timer_elapsed(timer);
}
-/* Private sleep function used by smpi_sleep() and smpi_usleep() */
+/* Private sleep function used by smpi_sleep(), smpi_usleep() and friends */
static unsigned int private_sleep(double secs)
{
smpi_bench_end();
XBT_DEBUG("Sleep for: %lf secs", secs);
- int rank = MPI_COMM_WORLD->rank();
- instr_extra_data extra = xbt_new0(s_instr_extra_data_t,1);
- extra->type=TRACING_SLEEPING;
- extra->sleep_duration=secs;
- TRACE_smpi_sleeping_in(rank, extra);
+ int rank = simgrid::s4u::this_actor::get_pid();
+ TRACE_smpi_sleeping_in(rank, secs);
simcall_process_sleep(secs);
unsigned int smpi_sleep(unsigned int secs)
{
+ if (not smpi_process())
+ return sleep(secs);
return private_sleep(static_cast<double>(secs));
}
int smpi_usleep(useconds_t usecs)
{
+ if (not smpi_process())
+ return usleep(usecs);
return static_cast<int>(private_sleep(static_cast<double>(usecs) / 1000000.0));
}
#if _POSIX_TIMERS > 0
-int smpi_nanosleep(const struct timespec *tp, struct timespec * t)
+int smpi_nanosleep(const struct timespec* tp, struct timespec* t)
{
+ if (not smpi_process())
+ return nanosleep(tp,t);
return static_cast<int>(private_sleep(static_cast<double>(tp->tv_sec + tp->tv_nsec / 1000000000.0)));
}
#endif
-int smpi_gettimeofday(struct timeval *tv, void* tz)
+int smpi_gettimeofday(struct timeval* tv, struct timezone* tz)
{
+ if (not smpi_process())
+ return gettimeofday(tv, tz);
+
smpi_bench_end();
double now = SIMIX_get_clock();
if (tv) {
tv->tv_usec = static_cast<suseconds_t>((now - tv->tv_sec) * 1e6);
#endif
}
+ if (smpi_wtime_sleep > 0)
+ simcall_process_sleep(smpi_wtime_sleep);
smpi_bench_begin();
return 0;
}
#if _POSIX_TIMERS > 0
-int smpi_clock_gettime(clockid_t clk_id, struct timespec *tp)
+int smpi_clock_gettime(clockid_t clk_id, struct timespec* tp)
{
+ if (not smpi_process())
+ return clock_gettime(clk_id, tp);
//there is only one time in SMPI, so clk_id is ignored.
smpi_bench_end();
double now = SIMIX_get_clock();
tp->tv_sec = static_cast<time_t>(now);
tp->tv_nsec = static_cast<long int>((now - tp->tv_sec) * 1e9);
}
+ if (smpi_wtime_sleep > 0)
+ simcall_process_sleep(smpi_wtime_sleep);
smpi_bench_begin();
return 0;
}
#endif
+double smpi_mpi_wtime()
+{
+ double time;
+ if (smpi_process()->initialized() && not smpi_process()->finalized() && not smpi_process()->sampling()) {
+ smpi_bench_end();
+ time = SIMIX_get_clock();
+ if (smpi_wtime_sleep > 0)
+ simcall_process_sleep(smpi_wtime_sleep);
+ smpi_bench_begin();
+ } else {
+ time = SIMIX_get_clock();
+ }
+ return time;
+}
+
extern double sg_surf_precision;
unsigned long long smpi_rastro_resolution ()
{
/* ****************************** Functions related to the SMPI_SAMPLE_ macros ************************************/
namespace {
-struct LocalData {
+class SampleLocation : public std::string {
+public:
+ SampleLocation(bool global, const char* file, int line) : std::string(std::string(file) + ":" + std::to_string(line))
+ {
+ if (not global)
+ this->append(":" + std::to_string(simgrid::s4u::this_actor::get_pid()));
+ }
+};
+
+class LocalData {
+public:
double threshold; /* maximal stderr requested (if positive) */
double relstderr; /* observed stderr so far */
double mean; /* mean of benched times, to be used if the block is disabled */
bool need_more_benchs() const;
};
-}
-
-std::unordered_map<std::string, LocalData> samples;
-
-static std::string sample_location(int global, const char* file, int line)
-{
- if (global) {
- return std::string(file) + ":" + std::to_string(line);
- } else {
- return std::string(file) + ":" + std::to_string(line) + ":" + std::to_string(smpi_process()->index());
- }
-}
bool LocalData::need_more_benchs() const
{
return res;
}
+std::unordered_map<SampleLocation, LocalData, std::hash<std::string>> samples;
+}
+
void smpi_sample_1(int global, const char *file, int line, int iters, double threshold)
{
- std::string loc = sample_location(global, file, line);
-
- smpi_bench_end(); /* Take time from previous, unrelated computation into account */
- smpi_process()->set_sampling(1);
+ SampleLocation loc(global, file, line);
+ if (not smpi_process()->sampling()) { /* Only at first call when benchmarking, skip for next ones */
+ smpi_bench_end(); /* Take time from previous, unrelated computation into account */
+ smpi_process()->set_sampling(1);
+ }
auto insert = samples.emplace(loc, LocalData{
threshold, // threshold
}
}
-int smpi_sample_2(int global, const char *file, int line)
+int smpi_sample_2(int global, const char *file, int line, int iter_count)
{
- std::string loc = sample_location(global, file, line);
- int res;
+ SampleLocation loc(global, file, line);
- XBT_DEBUG("sample2 %s", loc.c_str());
+ XBT_DEBUG("sample2 %s %d", loc.c_str(), iter_count);
auto sample = samples.find(loc);
if (sample == samples.end())
xbt_die("Y U NO use SMPI_SAMPLE_* macros? Stop messing directly with smpi_sample_* functions!");
if (data.benching) {
// we need to run a new bench
- XBT_DEBUG("benchmarking: count:%d iter:%d stderr:%f thres:%f; mean:%f",
- data.count, data.iters, data.relstderr, data.threshold, data.mean);
- res = 1;
+ XBT_DEBUG("benchmarking: count:%d iter:%d stderr:%f thres:%f; mean:%f; total:%f",
+ data.count, data.iters, data.relstderr, data.threshold, data.mean, data.sum);
+ smpi_bench_begin();
} else {
// Enough data, no more bench (either we got enough data from previous visits to this benched nest, or we just
//ran one bench and need to bail out now that our job is done). Just sleep instead
- XBT_DEBUG("No benchmark (either no need, or just ran one): count >= iter (%d >= %d) or stderr<thres (%f<=%f)."
- " apply the %fs delay instead",
- data.count, data.iters, data.relstderr, data.threshold, data.mean);
- smpi_execute(data.mean);
- smpi_process()->set_sampling(0);
- res = 0; // prepare to capture future, unrelated computations
+ if (not data.need_more_benchs()){
+ XBT_DEBUG("No benchmark (either no need, or just ran one): count >= iter (%d >= %d) or stderr<thres (%f<=%f). "
+ "Mean is %f, will be injected %d times",
+ data.count, data.iters, data.relstderr, data.threshold, data.mean, iter_count);
+
+ //we ended benchmarking, let's inject all the time, now, and fast forward out of the loop.
+ smpi_process()->set_sampling(0);
+ smpi_execute(data.mean*iter_count);
+ smpi_bench_begin();
+ return 0;
+ } else {
+ XBT_DEBUG("Skipping - Benchmark already performed - accumulating time");
+ xbt_os_threadtimer_start(smpi_process()->timer());
+ }
}
- smpi_bench_begin();
- return res;
+ return 1;
}
void smpi_sample_3(int global, const char *file, int line)
{
- std::string loc = sample_location(global, file, line);
+ SampleLocation loc(global, file, line);
XBT_DEBUG("sample3 %s", loc.c_str());
auto sample = samples.find(loc);
double n = static_cast<double>(data.count);
data.mean = data.sum / n;
data.relstderr = sqrt((data.sum_pow2 / n - data.mean * data.mean) / n) / data.mean;
- if (data.need_more_benchs()) {
- data.mean = period; // Still in benching process; We want sample_2 to simulate the exact time of this loop
- // occurrence before leaving, not the mean over the history
- }
+
XBT_DEBUG("Average mean after %d steps is %f, relative standard error is %f (sample was %f)",
data.count, data.mean, data.relstderr, period);
data.benching = false;
}
-extern "C" { /** These functions will be called from the user code **/
+int smpi_sample_exit(int global, const char *file, int line, int iter_count){
+ if (smpi_process()->sampling()){
+ SampleLocation loc(global, file, line);
+
+ XBT_DEBUG("sample exit %s", loc.c_str());
+ auto sample = samples.find(loc);
+ if (sample == samples.end())
+ xbt_die("Y U NO use SMPI_SAMPLE_* macros? Stop messing directly with smpi_sample_* functions!");
+ LocalData& data = sample->second;
+
+ if (smpi_process()->sampling()){//end of loop, but still sampling needed
+ smpi_process()->set_sampling(0);
+ smpi_execute(data.mean*iter_count);
+ smpi_bench_begin();
+ }
+ }
+ return 0;
+}
+
smpi_trace_call_location_t* smpi_trace_get_call_location()
{
return smpi_process()->call_location();
{
smpi_trace_set_call_location(file, *line);
}
-}
void smpi_bench_destroy()
{
samples.clear();
}
+
+int smpi_getopt_long_only (int argc, char *const *argv, const char *options,
+ const struct option * long_options, int *opt_index)
+{
+ if (smpi_process())
+ optind = smpi_process()->get_optind();
+ int ret = getopt_long_only (argc, argv, options, long_options, opt_index);
+ if (smpi_process())
+ smpi_process()->set_optind(optind);
+ return ret;
+}
+
+int smpi_getopt_long (int argc, char *const *argv, const char *options,
+ const struct option * long_options, int *opt_index)
+{
+ if (smpi_process())
+ optind = smpi_process()->get_optind();
+ int ret = getopt_long (argc, argv, options, long_options, opt_index);
+ if (smpi_process())
+ smpi_process()->set_optind(optind);
+ return ret;
+}
+
+int smpi_getopt (int argc, char *const *argv, const char *options)
+{
+ if (smpi_process())
+ optind = smpi_process()->get_optind();
+ int ret = getopt (argc, argv, options);
+ if (smpi_process())
+ smpi_process()->set_optind(optind);
+ return ret;
+}