#include <cerrno>
+#include <cmath>
+#include <csignal>
#include <cstring> // strchr
#include <iostream>
-#include <signal.h>
#include <stdexcept>
#include <msg/msg.h>
#include <xbt/log.h>
#include "tracing.h"
#include "version.h"
-#define DATA_DESCR_WIDTH 37
+#define DATA_DESCR_WIDTH 39
namespace {
// Failure exit status
EXIT_FAILURE_INIT = 0x02, // failed to initialize simulator
EXIT_FAILURE_SIMU = 0x04, // simulation failed
EXIT_FAILURE_CLEAN = 0x08, // error at cleanup
- EXIT_FAILURE_OTHER = 0x10, // other error
+ EXIT_FAILURE_INTR = 0x10, // interrupted by user
+ EXIT_FAILURE_LOAD = 0x20, // lost load on exit
+ EXIT_FAILURE_OTHER = 0x40, // other error
};
// Cannot be globally initialized...
statistics loads;
statistics comps;
+ statistics comp_iterations;
+ statistics all_comp_iterations;
statistics data_send_amount;
statistics data_recv_amount;
statistics data_send_count;
statistics ctrl_recv_amount;
statistics ctrl_send_count;
statistics ctrl_recv_count;
+ statistics convergence;
}
proc_mutex->acquire();
loads.push(proc->get_real_load());
comps.push(proc->get_comp_amount());
+ comp_iterations.push(proc->get_comp_iter());
+ all_comp_iterations.push(proc->get_all_comp_iter());
data_send_amount.push(proc->get_data_send_amount());
data_recv_amount.push(proc->get_data_recv_amount());
data_send_count.push(proc->get_data_send_count());
ctrl_recv_amount.push(proc->get_ctrl_recv_amount());
ctrl_send_count.push(proc->get_ctrl_send_count());
ctrl_recv_count.push(proc->get_ctrl_recv_count());
+ double c = proc->get_convergence();
+ if (c != -1.0)
+ convergence.push(c);
// Synchronization barrier...
// The goal is to circumvent a limitation in SimGrid (at least
return result;
}
-static void check_for_lost_load()
+static bool check_for_lost_load()
{
+ bool res = true;
double total_init = process::get_total_load_init();
double total_exit = process::get_total_load_exit();
double lost = total_init - total_exit;
double lost_ratio = 100.0 * lost / total_init;
- if (lost_ratio < -opt::load_ratio_threshold)
+ if (lost_ratio < -opt::load_ratio_threshold) {
XBT_ERROR("Gained load at exit! %g (%g%%) <============",
-lost, -lost_ratio);
- else if (lost_ratio > opt::load_ratio_threshold)
+ res = false;
+ } else if (lost_ratio > opt::load_ratio_threshold) {
XBT_ERROR("Lost load at exit! %g (%g%%) <============",
lost, lost_ratio);
- else
+ res = false;
+ } else
XBT_VERB("Total load at exit looks good: %g (%g%%)", lost, lost_ratio);
double total_running = process::get_total_load_running();
double running_ratio = 100.0 * total_running / total_init;
- if (running_ratio < -opt::load_ratio_threshold)
+ if (running_ratio < -opt::load_ratio_threshold) {
XBT_ERROR("Negative running load at exit! %g (%g%%) <============",
total_running, running_ratio);
- else if (running_ratio > opt::load_ratio_threshold)
+ res = false;
+ } else if (running_ratio > opt::load_ratio_threshold) {
XBT_ERROR("Remaining running load at exit! %g (%g%%) <============",
total_running, running_ratio);
- else
+ res = false;
+ } else
XBT_VERB("Running load at exit looks good: %g (%g%%)",
total_running, running_ratio);
+ return res;
}
static void signal_handler(int /*sig*/)
XBT_CRITICAL(">>>>>>>>>>"
" caught CTRL-C: global exit requested "
"<<<<<<<<<<");
- opt::exit_request = true;
+ opt::exit_request = 1;
+ } else {
+ XBT_CRITICAL(">>>>>>>>>>"
+ " caught CTRL-C for the 2nd time: exit immediately "
+ "<<<<<<<<<<");
+ exit(EXIT_FAILURE_INTR);
}
}
action.sa_handler = signal_handler;
sigemptyset(&action.sa_mask);
action.sa_flags = SA_RESTART;
- if (sigaction (SIGINT, &action, NULL) == -1) {
+ if (sigaction(SIGINT, &action, NULL) == -1) {
std::cerr << "sigaction: " << strerror(errno) << "\n";
exit(EXIT_FAILURE_OTHER);
}
}
+#define PR_VALUE(descr, format, ...) \
+ XBT_INFO("| %.*s: " format, DATA_DESCR_WIDTH, \
+ descr ".................................................", \
+ __VA_ARGS__)
+
#define PR_STATS(descr, st) \
XBT_INFO("| %.*s: %g / %g / %g", DATA_DESCR_WIDTH, \
- descr " (total/avg./stddev)................................", \
+ descr " (total/avg./stddev).............................", \
st.get_sum(), st.get_mean(), st.get_stddev())
int main(int argc, char* argv[])
// Note: variables used after THROW must be declared as volatile.
volatile int exit_status = 0; // global exit status
volatile double simulated_time = -1.0;
+ timestamp elapsed_time(timestamp::wallclock_time);
timestamp simulation_time(timestamp::cpu_time);
xbt_ex_t ex;
MSG_error_t res;
+ elapsed_time.start();
simulation_time.start();
// Set default logging parameters
MSG_create_environment(opt::platform_file.c_str());
XBT_DEBUG("Creating hostdata...");
hostdata::create();
+ XBT_INFO("Loaded description of %zd hosts.", hostdata::size());
XBT_DEBUG("Deploying processes...");
if (opt::auto_depl::enabled) {
if (!opt::auto_depl::nhosts)
opt::auto_depl::nhosts, hostdata::size());
opt::auto_depl::nhosts = hostdata::size();
}
- if (!opt::auto_depl::load)
+ if (opt::auto_depl::load == 0.0) {
+ XBT_WARN("Initial load is zero! "
+ "Falling back on old behaviour (load = nhosts).");
opt::auto_depl::load = opt::auto_depl::nhosts;
+ } else if (opt::auto_depl::load < 0.0)
+ opt::auto_depl::load =
+ -opt::auto_depl::load * opt::auto_depl::nhosts;
+ double iload = std::trunc(opt::auto_depl::load);
+ if (opt::integer_transfer && opt::auto_depl::load != iload) {
+ XBT_WARN("Total load %g is not an integer. Truncate it.",
+ opt::auto_depl::load);
+ opt::auto_depl::load = iload;
+ }
MY_launch_application(); // it is already opt::* aware...
} else {
MSG_launch_application(opt::deployment_file.c_str());
// Report final simulation status.
if (simulated_time >= 0.0) {
simulation_time.stop();
- check_for_lost_load();
+ elapsed_time.stop();
+ if (!check_for_lost_load())
+ exit_status |= EXIT_FAILURE_LOAD;
+
XBT_INFO(",----[ Results ]");
PR_STATS("Load", loads);
PR_STATS("Computation", comps);
+ PR_STATS("Comp. iterations", comp_iterations);
+ PR_STATS("X-Comp. iterations", all_comp_iterations);
PR_STATS("Data send amount", data_send_amount);
PR_STATS("Data recv amount", data_recv_amount);
PR_STATS("Data send count", data_send_count);
PR_STATS("Ctrl recv amount", ctrl_recv_amount);
PR_STATS("Ctrl send count", ctrl_send_count);
PR_STATS("Ctrl recv count", ctrl_recv_count);
- XBT_INFO("| %.*s: %g", DATA_DESCR_WIDTH,
- "Total simulated time..................................",
- simulated_time);
- XBT_INFO("| %.*s: %g", DATA_DESCR_WIDTH,
- "Total simulation time.................................",
- simulation_time.duration());
+ PR_VALUE("Total simulated time", "%g", simulated_time);
+ PR_VALUE("Total simulation time", "%g", simulation_time.duration());
+ PR_VALUE("Elapsed (wall clock) time", "%g", elapsed_time.duration());
XBT_INFO("`----");
+
+ double load_imbalance = 100.0 * loads.get_stddev() / loads.get_mean();
+ double transfer_amount =
+ data_send_amount.get_sum() / opt::comm_cost(loads.get_sum());
+
+ XBT_INFO(",----[ Useful metrics ]");
+ PR_VALUE("Final load imbalance", "%g %s", load_imbalance,
+ "percent of the load average");
+ PR_VALUE("Data transfer amount", "%g %s", transfer_amount,
+ "times the total amount of data");
+ PR_VALUE("Number of hosts that converged", "%u / %u",
+ convergence.get_count(), loads.get_count());
+ PR_VALUE("Date of first host convergence", "%g", convergence.get_min());
+ PR_VALUE("Date of last host convergence", "%g", convergence.get_max());
+ XBT_INFO("`----");
+
}
if (exit_status)
XBT_ERROR("Simulation failed (%#x).", exit_status);
