-/* Copyright (c) 2017-2022. The SimGrid Team. All rights reserved. */
+/* Copyright (c) 2017-2023. 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 <simgrid/s4u.hpp>
XBT_LOG_NEW_DEFAULT_CATEGORY(s4u_ptask, "Messages specific for this s4u example");
+namespace sg4 = simgrid::s4u;
static void runner()
{
/* Retrieve the list of all hosts as an array of hosts */
- auto hosts = simgrid::s4u::Engine::get_instance()->get_all_hosts();
+ auto hosts = sg4::Engine::get_instance()->get_all_hosts();
size_t hosts_count = hosts.size();
std::vector<double> computation_amounts;
for (size_t j = i + 1; j < hosts_count; j++)
communication_amounts[i * hosts_count + j] = 1e7; // 10 MB
- simgrid::s4u::this_actor::parallel_execute(hosts, computation_amounts, communication_amounts);
+ sg4::this_actor::parallel_execute(hosts, computation_amounts, communication_amounts);
/* ------[ test 2 ]----------------- */
XBT_INFO("We can do the same with a timeout of 10 seconds enabled.");
for (size_t j = i + 1; j < hosts_count; j++)
communication_amounts[i * hosts_count + j] = 1e7; // 10 MB
- simgrid::s4u::ExecPtr activity =
- simgrid::s4u::this_actor::exec_init(hosts, computation_amounts, communication_amounts);
+ sg4::ExecPtr activity = sg4::this_actor::exec_init(hosts, computation_amounts, communication_amounts);
try {
activity->wait_for(10.0 /* timeout (in seconds)*/);
xbt_die("Woops, this did not timeout as expected... Please report that bug.");
XBT_INFO("Then, build a parallel activity involving only computations (of different amounts) and no communication");
computation_amounts = {3e8, 6e8, 1e9}; // 300Mflop, 600Mflop, 1Gflop
communication_amounts.clear(); // no comm
- simgrid::s4u::this_actor::parallel_execute(hosts, computation_amounts, communication_amounts);
+ sg4::this_actor::parallel_execute(hosts, computation_amounts, communication_amounts);
/* ------[ test 4 ]----------------- */
XBT_INFO("Then, build a parallel activity with no computation nor communication (synchro only)");
computation_amounts.clear();
communication_amounts.clear();
- simgrid::s4u::this_actor::parallel_execute(hosts, computation_amounts, communication_amounts);
+ sg4::this_actor::parallel_execute(hosts, computation_amounts, communication_amounts);
/* ------[ test 5 ]----------------- */
XBT_INFO("Then, Monitor the execution of a parallel activity");
computation_amounts.assign(hosts_count, 1e6 /*1Mflop*/);
communication_amounts = {0, 1e6, 0, 0, 0, 1e6, 1e6, 0, 0};
- activity = simgrid::s4u::this_actor::exec_init(hosts, computation_amounts, communication_amounts);
+ activity = sg4::this_actor::exec_init(hosts, computation_amounts, communication_amounts);
activity->start();
while (not activity->test()) {
XBT_INFO("Remaining flop ratio: %.0f%%", 100 * activity->get_remaining_ratio());
- simgrid::s4u::this_actor::sleep_for(5);
+ sg4::this_actor::sleep_for(5);
}
activity->wait();
XBT_INFO(" - Start a regular parallel execution, with both comm and computation");
computation_amounts.assign(hosts_count, 1e6 /*1Mflop*/);
communication_amounts = {0, 1e6, 0, 0, 1e6, 0, 1e6, 0, 0};
- activity = simgrid::s4u::this_actor::exec_init(hosts, computation_amounts, communication_amounts);
+ activity = sg4::this_actor::exec_init(hosts, computation_amounts, communication_amounts);
activity->start();
- simgrid::s4u::this_actor::sleep_for(10);
+ sg4::this_actor::sleep_for(10);
double remaining_ratio = activity->get_remaining_ratio();
XBT_INFO(" - After 10 seconds, %.2f%% remains to be done. Change it from 3 hosts to 2 hosts only.",
remaining_ratio * 100);
XBT_INFO(" - Now, simulate the reconfiguration (modeled as a comm from the removed host to the remaining ones).");
std::vector<double> rescheduling_comp{0, 0, 0};
std::vector<double> rescheduling_comm{0, 0, 0, 0, 0, 0, 25000, 25000, 0};
- simgrid::s4u::this_actor::parallel_execute(hosts, rescheduling_comp, rescheduling_comm);
+ sg4::this_actor::parallel_execute(hosts, rescheduling_comp, rescheduling_comm);
XBT_INFO(" - Now, let's cancel the old task and create a new task with modified comm and computation vectors:");
XBT_INFO(" What was already done is removed, and the load of the removed host is shared between remaining ones.");
communication_amounts = {0, remaining_comm, remaining_comm, 0}; // Resizing a linearized matrix is hairly
activity->cancel();
- activity = simgrid::s4u::this_actor::exec_init(hosts, computation_amounts, communication_amounts);
+ activity = sg4::this_actor::exec_init(hosts, computation_amounts, communication_amounts);
XBT_INFO(" - Done, let's wait for the task completion");
activity->wait();
int main(int argc, char* argv[])
{
- simgrid::s4u::Engine e(&argc, argv);
+ sg4::Engine e(&argc, argv);
xbt_assert(argc == 2, "Usage: %s <platform file>", argv[0]);
e.load_platform(argv[1]);
- simgrid::s4u::Actor::create("test", e.host_by_name("MyHost1"), runner);
+ sg4::Actor::create("test", e.host_by_name("MyHost1"), runner);
e.run();
XBT_INFO("Simulation done.");