-#include <stdio.h>
-#include "private.h"
-
-// FIXME: could cause trouble with multithreaded procs on same host...
-// FIXME: add benchmarking flag?
+/* Copyright (c) 2007, 2009, 2010. The SimGrid Team.
+ * All rights reserved. */
-void smpi_bench_begin()
-{
- SIMIX_mutex_lock(smpi_global->timer_mutex);
+/* 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. */
- xbt_os_timer_start(smpi_global->timer);
-
- return;
+#include "private.h"
+#include "xbt/dict.h"
+#include "xbt/sysdep.h"
+
+XBT_LOG_NEW_DEFAULT_SUBCATEGORY(smpi_bench, smpi,
+ "Logging specific to SMPI (benchmarking)");
+
+xbt_dict_t allocs = NULL; /* Allocated on first use */
+xbt_dict_t samples = NULL; /* Allocated on first use */
+
+typedef struct {
+ int count;
+ char data[];
+} shared_data_t;
+
+typedef struct {
+ double time;
+ int count;
+ int max;
+ int started;
+} local_data_t;
+
+void smpi_bench_destroy(void) {
+ if (allocs) {
+ xbt_dict_free(&allocs);
+ }
+ if (samples) {
+ xbt_dict_free(&samples);
+ }
}
-double smpi_bench_end()
-{
- double duration;
- smx_host_t host;
- smx_action_t action;
-
- xbt_os_timer_stop(smpi_global->timer);
+static void smpi_execute_flops(double flops) {
+ smx_host_t host;
+ smx_action_t action;
+ smx_mutex_t mutex;
+ smx_cond_t cond;
+ e_surf_action_state_t state;
+
+ host = SIMIX_host_self();
+ mutex = SIMIX_mutex_init();
+ cond = SIMIX_cond_init();
+ DEBUG1("Handle real computation time: %f flops", flops);
+ action = SIMIX_action_execute(host, "computation", flops);
+ SIMIX_mutex_lock(mutex);
+ SIMIX_register_action_to_condition(action, cond);
+ for(state = SIMIX_action_get_state(action);
+ state == SURF_ACTION_READY ||
+ state == SURF_ACTION_RUNNING; state = SIMIX_action_get_state(action)) {
+ SIMIX_cond_wait(cond, mutex);
+ }
+ SIMIX_unregister_action_to_condition(action, cond);
+ SIMIX_mutex_unlock(mutex);
+ SIMIX_action_destroy(action);
+ SIMIX_cond_destroy(cond);
+ SIMIX_mutex_destroy(mutex);
+}
- duration = xbt_os_timer_elapsed(smpi_global->timer);
+static void smpi_execute(double duration) {
+ if(duration >= xbt_cfg_get_double(_surf_cfg_set, "smpi/cpu_threshold")) {
+ DEBUG1("Sleep for %f to handle real computation time", duration);
+ smpi_execute_flops(duration * xbt_cfg_get_double(_surf_cfg_set, "smpi/running_power"));
+ }
+}
- host = SIMIX_host_self();
- action = SIMIX_action_execute(host, "computation", duration * SMPI_DEFAULT_SPEED);
+void smpi_bench_begin(int rank, const char* mpi_call) {
+ if(mpi_call && rank >= 0 && xbt_cfg_get_int(_surf_cfg_set, "smpi/log_events")) {
+ INFO3("SMPE: ts=%f rank=%d type=end et=%s", SIMIX_get_clock(), rank, mpi_call);
+ }
+ xbt_os_timer_start(smpi_process_timer());
+}
- SIMIX_register_action_to_condition(action, smpi_global->timer_cond);
- SIMIX_cond_wait(smpi_global->timer_cond, smpi_global->timer_mutex);
- SIMIX_unregister_action_to_condition(action, smpi_global->timer_cond);
- SIMIX_action_destroy(action);
+void smpi_bench_end(int rank, const char* mpi_call) {
+ xbt_os_timer_t timer = smpi_process_timer();
- SIMIX_mutex_unlock(smpi_global->timer_mutex);
+ xbt_os_timer_stop(timer);
+ smpi_execute(xbt_os_timer_elapsed(timer));
+ if(mpi_call && rank >= 0 && xbt_cfg_get_int(_surf_cfg_set, "smpi/log_events")) {
+ INFO3("SMPE: ts=%f rank=%d type=begin et=%s", SIMIX_get_clock(), rank, mpi_call);
+ }
+}
- return duration;
+unsigned int smpi_sleep(unsigned int secs) {
+ smpi_execute((double)secs);
+ return secs;
}
-void smpi_bench_skip() {
- smx_host_t host;
- smx_action_t action;
- double duration = smpi_global->times[0];
+int smpi_gettimeofday(struct timeval* tv, struct timezone* tz) {
+ double now = SIMIX_get_clock();
- SIMIX_mutex_lock(smpi_global->timer_mutex);
+ if(tv) {
+ tv->tv_sec = (time_t)now;
+ tv->tv_usec = (suseconds_t)(now * 1e6);
+ }
+ return 0;
+}
- host = SIMIX_host_self();
- action = SIMIX_action_execute(host, "computation", duration * SMPI_DEFAULT_SPEED);
+static char* sample_location(int global, const char* file, int line) {
+ if(global) {
+ return bprintf("%s:%d", file, line);
+ } else {
+ return bprintf("%s:%d:%d", file, line, smpi_process_index());
+ }
+}
- SIMIX_register_action_to_condition(action, smpi_global->timer_cond);
- SIMIX_cond_wait(smpi_global->timer_cond, smpi_global->timer_mutex);
- SIMIX_unregister_action_to_condition(action, smpi_global->timer_cond);
- SIMIX_action_destroy(action);
+void smpi_sample_1(int global, const char* file, int line, int max) {
+ char* loc = sample_location(global, file, line);
+ local_data_t* data;
+
+ smpi_bench_end(-1, NULL); /* Take time from previous MPI call into account */
+ if (!samples) {
+ samples = xbt_dict_new();
+ }
+ data = xbt_dict_get_or_null(samples, loc);
+ if (!data) {
+ data = (local_data_t*)xbt_new(local_data_t, 1);
+ data->time = 0.0;
+ data->count = 0;
+ data->max = max;
+ data->started = 0;
+ xbt_dict_set(samples, loc, data, &free);
+ }
+ free(loc);
+}
- SIMIX_mutex_unlock(smpi_global->timer_mutex);
+int smpi_sample_2(int global, const char* file, int line) {
+ char* loc = sample_location(global, file, line);
+ local_data_t* data;
+
+ xbt_assert0(samples, "You did something very inconsistent, didn't you?");
+ data = xbt_dict_get_or_null(samples, loc);
+ if (!data) {
+ xbt_assert0(data, "Please, do thing in order");
+ }
+ if (!data->started) {
+ if (data->count < data->max) {
+ data->started = 1;
+ data->count++;
+ } else {
+ DEBUG1("Perform some wait of %f", data->time / (double)data->count);
+ smpi_execute(data->time / (double)data->count);
+ }
+ } else {
+ data->started = 0;
+ }
+ free(loc);
+ smpi_bench_begin(-1, NULL);
+ smpi_process_simulated_start();
+ return data->started;
+}
- return;
+void smpi_sample_3(int global, const char* file, int line) {
+ char* loc = sample_location(global, file, line);
+ local_data_t* data;
+
+ xbt_assert0(samples, "You did something very inconsistent, didn't you?");
+ data = xbt_dict_get_or_null(samples, loc);
+ if (!data || !data->started || data->count >= data->max) {
+ xbt_assert0(data, "Please, do thing in order");
+ }
+ smpi_bench_end(-1, NULL);
+ data->time += smpi_process_simulated_elapsed();
+ DEBUG2("Average mean after %d steps is %f", data->count, data->time / (double)data->count);
}
-void smpi_do_once_1() {
- smpi_bench_end();
- SIMIX_mutex_lock(smpi_global->times_mutex);
- if (0 < smpi_global->times[0]) {
- smpi_bench_skip();
- }
- return;
+void smpi_sample_flops(double flops) {
+ smpi_execute_flops(flops);
}
-int smpi_do_once_2() {
- int retval = 1;
- if (0 < smpi_global->times[0]) {
- SIMIX_mutex_unlock(smpi_global->times_mutex);
- retval = 0;
- }
- smpi_bench_begin();
- return retval;
+void* smpi_shared_malloc(size_t size, const char* file, int line) {
+ char* loc = bprintf("%s:%d:%zu", file, line, size);
+ shared_data_t* data;
+
+ if (!allocs) {
+ allocs = xbt_dict_new();
+ }
+ data = xbt_dict_get_or_null(allocs, loc);
+ if (!data) {
+ data = (shared_data_t*)xbt_malloc0(sizeof(int) + size);
+ data->count = 1;
+ xbt_dict_set(allocs, loc, data, &free);
+ } else {
+ data->count++;
+ }
+ free(loc);
+ return data->data;
}
-void smpi_do_once_3() {
- smpi_global->times[0] = smpi_bench_end();
- return;
+void smpi_shared_free(void* ptr) {
+ shared_data_t* data = (shared_data_t*)((int*)ptr - 1);
+ char* loc;
+
+ if (!allocs) {
+ WARN0("Cannot free: nothing was allocated");
+ return;
+ }
+ loc = xbt_dict_get_key(allocs, data);
+ if (!loc) {
+ WARN1("Cannot free: %p was not shared-allocated by SMPI", ptr);
+ return;
+ }
+ data->count--;
+ if (data->count <= 0) {
+ xbt_dict_remove(allocs, loc);
+ }
}
