static uintptr_t raw_threads_working; /* number of threads that have started their work */
static xbt_os_thread_key_t raw_worker_id_key; /* thread-specific storage for the thread id */
#endif
-#ifdef ADAPTIVE_THRESHOLD
-#define SCHED_ROUND_LIMIT 5
-static xbt_os_timer_t round_time;
-static double par_time,seq_time;
-static double par_ratio,seq_ratio;
-static int reached_seq_limit, reached_par_limit;
-static unsigned int par_proc_that_ran = 0,seq_proc_that_ran = 0; /* Counters of processes that have run in SCHED_ROUND_LIMIT scheduling rounds */
-static unsigned int seq_sched_round=0, par_sched_round=0; /* Amount of SR that ran serial/parallel*/
-/*Varables used to calculate running variance and mean*/
-static double prev_avg_par_proc=0,prev_avg_seq_proc=0;
-static double delta=0;
-static double s_par_proc=0,s_seq_proc=0; /*Standard deviation of number of processes computed in par/seq during the current simulation*/
-static double avg_par_proc=0,sd_par_proc=0;
-static double avg_seq_proc=0,sd_seq_proc=0;
-static long long par_window=(long long)HUGE_VAL,seq_window=0;
-#endif
static unsigned long raw_process_index = 0; /* index of the next process to run in the
* list of runnable processes */
static simgrid::simix::RawContext* raw_maestro_context;
static bool raw_context_parallel = false;
-#ifdef ADAPTIVE_THRESHOLD
-static bool raw_context_adaptative = false;
-#endif
// ***** Raw context routines
RawContextFactory::RawContextFactory()
: ContextFactory("RawContextFactory")
{
-#ifdef ADAPTIVE_THRESHOLD
- raw_context_adaptative = (SIMIX_context_get_parallel_threshold() > 1);
-#endif
raw_context_parallel = SIMIX_context_is_parallel();
if (raw_context_parallel) {
#if HAVE_THREAD_CONTEXTS
#endif
// TODO, if(SIMIX_context_get_parallel_threshold() > 1) => choose dynamically
}
-#ifdef ADAPTIVE_THRESHOLD
- round_time = xbt_os_timer_new();
- reached_seq_limit = 0;
- reached_par_limit = 0;
-#endif
}
RawContextFactory::~RawContextFactory()
void RawContextFactory::run_all()
{
-#ifdef ADAPTIVE_THRESHOLD
- if (raw_context_adaptative)
- run_all_adaptative();
- else
-#endif
if (raw_context_parallel)
run_all_parallel();
else
#endif
}
-/**
- * \brief Resumes all processes ready to run.
- */
-#ifdef ADAPTIVE_THRESHOLD
-void RawContectFactory::run_all_adaptative()
-{
- unsigned long nb_processes = xbt_dynar_length(simix_global->process_to_run);
- unsigned long threshold = SIMIX_context_get_parallel_threshold();
- reached_seq_limit = (seq_sched_round % SCHED_ROUND_LIMIT == 0);
- reached_par_limit = (par_sched_round % SCHED_ROUND_LIMIT == 0);
-
- if(reached_seq_limit && reached_par_limit){
- par_ratio = (par_proc_that_ran != 0) ? (par_time / (double)par_proc_that_ran) : 0;
- seq_ratio = (seq_proc_that_ran != 0) ? (seq_time / (double)seq_proc_that_ran) : 0;
- if(seq_ratio > par_ratio){
- if(nb_processes < avg_par_proc) {
- threshold = (threshold>2) ? threshold - 1 : threshold ;
- SIMIX_context_set_parallel_threshold(threshold);
- }
- } else {
- if(nb_processes > avg_seq_proc){
- SIMIX_context_set_parallel_threshold(threshold+1);
- }
- }
- }
-
- if (nb_processes >= SIMIX_context_get_parallel_threshold()) {
- simix_global->context_factory->suspend = smx_ctx_raw_suspend_parallel;
- if (nb_processes < par_window){
- par_sched_round++;
- xbt_os_walltimer_start(round_time);
- smx_ctx_raw_runall_parallel();
- xbt_os_walltimer_stop(round_time);
- par_time += xbt_os_timer_elapsed(round_time);
-
- prev_avg_par_proc = avg_par_proc;
- delta = nb_processes - avg_par_proc;
- avg_par_proc = (par_sched_round==1) ? nb_processes : avg_par_proc + delta / (double) par_sched_round;
-
- if(par_sched_round>=2){
- s_par_proc = s_par_proc + (nb_processes - prev_avg_par_proc) * delta;
- sd_par_proc = sqrt(s_par_proc / (par_sched_round-1));
- par_window = (int) (avg_par_proc + sd_par_proc);
- }else{
- sd_par_proc = 0;
- }
-
- par_proc_that_ran += nb_processes;
- } else{
- smx_ctx_raw_runall_parallel();
- }
- } else {
- simix_global->context_factory->suspend = smx_ctx_raw_suspend_serial;
- if(nb_processes > seq_window){
- seq_sched_round++;
- xbt_os_walltimer_start(round_time);
- smx_ctx_raw_runall_serial();
- xbt_os_walltimer_stop(round_time);
- seq_time += xbt_os_timer_elapsed(round_time);
-
- prev_avg_seq_proc = avg_seq_proc;
- delta = (nb_processes-avg_seq_proc);
- avg_seq_proc = (seq_sched_round==1) ? nb_processes : avg_seq_proc + delta / (double) seq_sched_round;
-
- if(seq_sched_round>=2){
- s_seq_proc = s_seq_proc + (nb_processes - prev_avg_seq_proc)*delta;
- sd_seq_proc = sqrt(s_seq_proc / (seq_sched_round-1));
- seq_window = (int) (avg_seq_proc - sd_seq_proc);
- } else {
- sd_seq_proc = 0;
- }
-
- seq_proc_that_ran += nb_processes;
- } else {
- smx_ctx_raw_runall_serial();
- }
- }
-}
-
-#else
-
-// TODO
+/** @brief Resumes all processes ready to run. */
void RawContextFactory::run_all_adaptative()
{
unsigned long nb_processes = xbt_dynar_length(simix_global->process_to_run);
this->run_all_serial();
}
}
-#endif
}
}
/* 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 <signal.h> /* Signal handling */
#include <stdlib.h>
#include "src/internal_config.h"
static void SIMIX_synchro_mallocator_free_f(void* synchro);
static void SIMIX_synchro_mallocator_reset_f(void* synchro);
-/* FIXME: Yeah, I'll do it in a portable maner one day [Mt] */
-#include <signal.h>
int _sg_do_verbose_exit = 1;
static void inthandler(int ignored)
}
#endif /* _WIN32 */
-/********************************* SIMIX **************************************/
+/********************************* SIMIX **************************************/
double SIMIX_timer_next(void)
{
return xbt_heap_size(simix_timers) > 0 ? xbt_heap_maxkey(simix_timers) : -1.0;
SIMIX_process_kill(process, NULL);
}
-static void SIMIX_storage_create_(smx_storage_t storage)
-{
- const char* key = xbt_dict_get_elm_key(storage);
- SIMIX_storage_create(key, storage, NULL);
-}
-
static std::function<void()> maestro_code;
namespace simgrid {
if (!simix_global) {
simix_global = xbt_new0(s_smx_global_t, 1);
-#ifdef TIME_BENCH_AMDAHL
- simix_global->timer_seq = xbt_os_timer_new();
- simix_global->timer_par = xbt_os_timer_new();
- xbt_os_cputimer_start(simix_global->timer_seq);
-#endif
simix_global->process_to_run = xbt_dynar_new(sizeof(smx_process_t), NULL);
simix_global->process_that_ran = xbt_dynar_new(sizeof(smx_process_t), NULL);
simix_global->process_list = xbt_swag_new(xbt_swag_offset(proc, process_hookup));
SIMIX_HOST_LEVEL = simgrid::s4u::Host::extension_create(SIMIX_host_destroy);
simgrid::surf::storageCreatedCallbacks.connect([](simgrid::surf::Storage* storage) {
- const char* id = storage->getName();
- // TODO, create sg_storage_by_name
- sg_storage_t s = xbt_lib_get_elm_or_null(storage_lib, id);
- xbt_assert(s != NULL, "Storage not found for name %s", id);
- SIMIX_storage_create_(s);
- });
+ const char* name = storage->getName();
+ // TODO, create sg_storage_by_name
+ sg_storage_t s = xbt_lib_get_elm_or_null(storage_lib, name);
+ xbt_assert(s != NULL, "Storage not found for name %s", name);
+
+ SIMIX_storage_create(name, s, NULL);
+ });
SIMIX_STORAGE_LEVEL = xbt_lib_add_level(storage_lib, SIMIX_storage_destroy);
}
*/
void SIMIX_clean(void)
{
-#ifdef TIME_BENCH_PER_SR
- smx_ctx_raw_new_sr();
-#endif
if (smx_cleaned) return; // to avoid double cleaning by java and C
smx_cleaned = 1;
XBT_DEBUG("SIMIX_clean called. Simulation's over.");
surf_exit();
-#ifdef TIME_BENCH_AMDAHL
- xbt_os_cputimer_stop(simix_global->timer_seq);
- XBT_INFO("Amdahl timings. Sequential time: %f; Parallel time: %f",
- xbt_os_timer_elapsed(simix_global->timer_seq),
- xbt_os_timer_elapsed(simix_global->timer_par));
- xbt_os_timer_free(simix_global->timer_seq);
- xbt_os_timer_free(simix_global->timer_par);
-#endif
-
xbt_mallocator_free(simix_global->synchro_mallocator);
xbt_free(simix_global);
simix_global = NULL;
do {
XBT_DEBUG("New Schedule Round; size(queue)=%lu",
xbt_dynar_length(simix_global->process_to_run));
-#ifdef TIME_BENCH_PER_SR
- smx_ctx_raw_new_sr();
-#endif
while (!xbt_dynar_is_empty(simix_global->process_to_run)) {
XBT_DEBUG("New Sub-Schedule Round; size(queue)=%lu",
xbt_dynar_length(simix_global->process_to_run));
/* Run all processes that are ready to run, possibly in parallel */
-#ifdef TIME_BENCH_AMDAHL
- xbt_os_cputimer_stop(simix_global->timer_seq);
- xbt_os_cputimer_resume(simix_global->timer_par);
-#endif
SIMIX_process_runall();
-#ifdef TIME_BENCH_AMDAHL
- xbt_os_cputimer_stop(simix_global->timer_par);
- xbt_os_cputimer_resume(simix_global->timer_seq);
-#endif
/* Move all killer processes to the end of the list, because killing a process that have an ongoing simcall is a bad idea */
xbt_dynar_three_way_partition(simix_global->process_that_ran, process_syscall_color);
SG_BEGIN_DECL()
-/* Define only for SimGrid benchmarking purposes */
-//#define TIME_BENCH_PER_SR /* this aims at measuring the time spent in each scheduling round per each thread. The code is thus run in sequential to bench separately each SSR */
-//#define TIME_BENCH_AMDAHL /* this aims at measuring the porting of time that could be parallelized at maximum (to get the optimal speedup by applying the amdahl law). */
-//#define ADAPTIVE_THRESHOLD /* this is to enable the adaptive threshold algorithm in raw contexts*/
-//#define TIME_BENCH_ENTIRE_SRS /* more general benchmark than TIME_BENCH_PER_SR. It aims to measure the total time spent in a whole scheduling round (including synchro costs)*/
-
-#ifdef TIME_BENCH_PER_SR
-XBT_PRIVATE void smx_ctx_raw_new_sr(void);
-#endif
-
/********************************** Simix Global ******************************/
typedef struct s_smx_global {
smx_context_factory_t context_factory;
void_pfn_smxprocess_t cleanup_process_function;
xbt_mallocator_t synchro_mallocator;
-#ifdef TIME_BENCH_AMDAHL
- xbt_os_timer_t timer_seq; /* used to bench the sequential and parallel parts of the simulation, if requested to */
- xbt_os_timer_t timer_par;
-#endif
-
xbt_os_mutex_t mutex;
} s_smx_global_t, *smx_global_t;
void sg_platf_new_process(sg_platf_process_cbarg_t process)
{
- xbt_assert(simix_global,"Cannot create process without SIMIX.");
-
sg_host_t host = sg_host_by_name(process->host);
if (!host) {
// The requested host does not exist. Do a nice message to the user
arg->name = xbt_strdup(arg->argv[0]);
arg->kill_time = kill_time;
arg->properties = current_property_set;
- if (!sg_host_simix(host)->boot_processes) {
+ if (!sg_host_simix(host)->boot_processes)
sg_host_simix(host)->boot_processes = xbt_dynar_new(sizeof(smx_process_arg_t), _SIMIX_host_free_process_arg);
- }
+
xbt_dynar_push_as(sg_host_simix(host)->boot_processes,smx_process_arg_t,arg);
if (start_time > SIMIX_get_clock()) {
arg->kill_time = kill_time;
arg->properties = current_property_set;
- XBT_DEBUG("Process %s(%s) will be started at time %f", arg->name,
- arg->hostname, start_time);
+ XBT_DEBUG("Process %s(%s) will be started at time %f", arg->name, arg->hostname, start_time);
SIMIX_timer_set(start_time, [](void* arg) {
SIMIX_process_create_from_wrapper((smx_process_arg_t) arg);
}, arg);
