/* 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 "xbt/sysdep.h"
#include <simgrid/s4u.hpp>
-#include <string>
XBT_LOG_NEW_DEFAULT_CATEGORY(s4u_app_masterworker, "Messages specific for this s4u example");
class Master {
- long number_of_tasks = 0; /* - Number of tasks */
- double comp_size = 0; /* - Task compute cost */
- double comm_size = 0; /* - Task communication size */
- long workers_count = 0; /* - Number of workers */
+ long tasks_count = 0;
+ double compute_cost = 0;
+ double communicate_cost = 0;
+ long workers_count = 0;
simgrid::s4u::MailboxPtr mailbox = nullptr;
public:
explicit Master(std::vector<std::string> args)
{
- xbt_assert(args.size() == 5, "The master function expects 4 arguments from the XML deployment file");
+ xbt_assert(args.size() == 5, "The master actor expects 4 arguments from the XML deployment file");
- number_of_tasks = std::stol(args[1]);
- comp_size = std::stod(args[2]);
- comm_size = std::stod(args[3]);
- workers_count = std::stol(args[4]);
+ workers_count = std::stol(args[1]);
+ tasks_count = std::stol(args[2]);
+ compute_cost = std::stod(args[3]);
+ communicate_cost = std::stod(args[4]);
- XBT_INFO("Got %ld workers and %ld tasks to process", workers_count, number_of_tasks);
+ XBT_INFO("Got %ld workers and %ld tasks to process", workers_count, tasks_count);
}
void operator()()
{
- for (int i = 0; i < number_of_tasks; i++) { /* For each task to be executed: */
- /* - Select a @ref worker in a round-robin way */
+ for (int i = 0; i < tasks_count; i++) { /* For each task to be executed: */
+ /* - Select a worker in a round-robin way */
mailbox = simgrid::s4u::Mailbox::by_name(std::string("worker-") + std::to_string(i % workers_count));
- if (number_of_tasks < 10000 || (number_of_tasks < 100000 && i % 10000 == 0) || i % 100000 == 0)
- XBT_INFO("Sending \"%s\" (of %ld) to mailbox \"%s\"", (std::string("Task_") + std::to_string(i)).c_str(),
- number_of_tasks, mailbox->get_cname());
-
- /* - Send the computation amount to the @ref worker */
- mailbox->put(new double(comp_size), comm_size);
+ /* - Send the computation amount to the worker */
+ if (tasks_count < 10000 || (tasks_count < 100000 && i % 10000 == 0) || i % 100000 == 0)
+ XBT_INFO("Sending task %d of %ld to mailbox '%s'", i, tasks_count, mailbox->get_cname());
+ mailbox->put(new double(compute_cost), communicate_cost);
}
- XBT_INFO("All tasks have been dispatched. Let's tell everybody the computation is over.");
+ XBT_INFO("All tasks have been dispatched. Request all workers to stop.");
for (int i = 0; i < workers_count; i++) {
- /* - Eventually tell all the workers to stop by sending a "finalize" task */
- mailbox = simgrid::s4u::Mailbox::by_name(std::string("worker-") + std::to_string(i % workers_count));
+ /* The workers stop when receiving a negative compute_cost */
+ mailbox = simgrid::s4u::Mailbox::by_name(std::string("worker-") + std::to_string(i));
mailbox->put(new double(-1.0), 0);
}
}
void operator()()
{
- while (1) { /* The worker waits in an infinite loop for tasks sent by the @ref master */
- double* task = static_cast<double*>(mailbox->get());
- xbt_assert(task != nullptr, "mailbox->get() failed");
- double comp_size = *task;
- delete task;
- if (comp_size < 0) { /* - Exit when -1.0 is received */
- XBT_INFO("I'm done. See you!");
- break;
- }
- /* - Otherwise, process the task */
- simgrid::s4u::this_actor::execute(comp_size);
- }
+ double compute_cost;
+ do {
+ double* msg = static_cast<double*>(mailbox->get());
+ compute_cost = *msg;
+ delete msg;
+
+ if (compute_cost > 0) /* If compute_cost is valid, execute a computation of that cost */
+ simgrid::s4u::this_actor::execute(compute_cost);
+
+ } while (compute_cost > 0); /* Stop when receiving an invalid compute_cost */
+
+ XBT_INFO("Exiting now.");
}
};
int main(int argc, char* argv[])
{
simgrid::s4u::Engine e(&argc, argv);
- xbt_assert(argc > 2,
- "Usage: %s platform_file deployment_file\n"
- "\tExample: %s msg_platform.xml msg_deployment.xml\n",
- argv[0], argv[0]);
+ xbt_assert(argc > 2, "Usage: %s platform_file deployment_file\n", argv[0]);
- e.load_platform(argv[1]); /* Load the platform description */
- e.register_actor<Master>("master"); /* Register the class representing the actors */
+ /* Register the classes representing the actors */
+ e.register_actor<Master>("master");
e.register_actor<Worker>("worker");
- e.load_deployment(argv[2]); /* Deploy the application */
- e.run(); /** - Run the simulation */
+ /* Load the platform description and then deploy the application */
+ e.load_platform(argv[1]);
+ e.load_deployment(argv[2]);
+
+ /* Run the simulation */
+ e.run();
- XBT_INFO("Simulation time %g", e.get_clock());
+ XBT_INFO("Simulation is over");
return 0;
}
