1 /* Copyright (c) 2007-2019. The SimGrid Team. All rights reserved. */
3 /* This program is free software; you can redistribute it and/or modify it
4 * under the terms of the license (GNU LGPL) which comes with this package. */
6 /* This example shows how to work with the state profile of an host or a link,
7 * specifying when the resource must be turned on or off.
9 * To set such a profile, the first way is to use a file in the XML, while the second is to use the programmatic
10 * interface. Once this profile is in place, the resource will automatically be turned on and off.
12 * The actors running on an host that is turned off will receive a simgrid::HostFailureException. Since we specified
13 * on_failure="RESTART" for each actors in the XML file, they will be automatically restarted when the host starts
16 * Communications using failed links will .. fail.
19 #include "simgrid/s4u.hpp"
22 XBT_LOG_NEW_DEFAULT_CATEGORY(s4u_test, "Messages specific for this s4u example");
24 static int master(int argc, char* argv[])
26 xbt_assert(argc == 5, "Expecting one parameter");
28 simgrid::s4u::Mailbox* mailbox;
29 long number_of_tasks = xbt_str_parse_int(argv[1], "Invalid amount of tasks: %s");
30 double comp_size = xbt_str_parse_double(argv[2], "Invalid computational size: %s");
31 double comm_size = xbt_str_parse_double(argv[3], "Invalid communication size: %s");
32 long workers_count = xbt_str_parse_int(argv[4], "Invalid amount of workers: %s");
34 XBT_INFO("Got %ld workers and %ld tasks to process", workers_count, number_of_tasks);
36 for (int i = 0; i < number_of_tasks; i++) {
37 mailbox = simgrid::s4u::Mailbox::by_name(std::string("worker-") + std::to_string(i % workers_count));
38 double* payload = new double(comp_size);
40 XBT_INFO("Send a message to %s", mailbox->get_cname());
41 mailbox->put(payload, comm_size, 10.0);
42 XBT_INFO("Send to %s completed", mailbox->get_cname());
43 } catch (simgrid::TimeoutError& e) {
45 XBT_INFO("Mmh. Got timeouted while speaking to '%s'. Nevermind. Let's keep going!", mailbox->get_cname());
47 if (e.category != network_error)
48 xbt_die("Unexpected behavior");
49 XBT_INFO("Mmh. The communication with '%s' failed. Nevermind. Let's keep going!", mailbox->get_cname());
54 XBT_INFO("All tasks have been dispatched. Let's tell everybody the computation is over.");
55 for (int i = 0; i < workers_count; i++) {
56 /* - Eventually tell all the workers to stop by sending a "finalize" task */
57 mailbox = simgrid::s4u::Mailbox::by_name(std::string("worker-") + std::to_string(i));
58 double* payload = new double(-1.0);
60 mailbox->put(payload, 0, 1.0);
61 } catch (simgrid::HostFailureException& e) {
63 XBT_INFO("Gloups. The cpu on which I'm running just turned off!. See you!");
65 } catch (simgrid::TimeoutError& e) {
67 XBT_INFO("Mmh. Got timeouted while speaking to '%s'. Nevermind. Let's keep going!", mailbox->get_cname());
70 if (e.category != network_error)
71 xbt_die("Unexpected behavior");
72 XBT_INFO("Mmh. Something went wrong with '%s'. Nevermind. Let's keep going!", mailbox->get_cname());
76 XBT_INFO("Goodbye now!");
80 static int worker(int argc, char* argv[])
82 xbt_assert(argc == 2, "Expecting one parameter");
83 long id = xbt_str_parse_int(argv[1], "Invalid argument %s");
84 simgrid::s4u::Mailbox* mailbox = simgrid::s4u::Mailbox::by_name(std::string("worker-") + std::to_string(id));
85 double* payload = nullptr;
86 double comp_size = -1;
89 XBT_INFO("Waiting a message on %s", mailbox->get_cname());
90 payload = static_cast<double*>(mailbox->get());
91 xbt_assert(payload != nullptr, "mailbox->get() failed");
94 if (comp_size < 0) { /* - Exit when -1.0 is received */
95 XBT_INFO("I'm done. See you!");
98 /* - Otherwise, process the task */
99 XBT_INFO("Start execution...");
100 simgrid::s4u::this_actor::execute(comp_size);
101 XBT_INFO("Execution complete.");
102 } catch (simgrid::HostFailureException& e) {
103 XBT_INFO("Gloups. The cpu on which I'm running just turned off!. See you!");
106 } catch (xbt_ex& e) {
107 if (e.category != network_error)
108 xbt_die("Unexpected behavior. Category: %s", xbt_ex_catname(e.category));
109 XBT_INFO("Mmh. Something went wrong. Nevermind. Let's keep going!");
115 int main(int argc, char* argv[])
117 simgrid::s4u::Engine e(&argc, argv);
118 e.load_platform(argv[1]);
119 e.register_function("master", master);
120 e.register_function("worker", worker);
121 e.load_deployment(argv[2]);
125 XBT_INFO("Simulation time %g", simgrid::s4u::Engine::get_clock());