1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
|
/* Copyright (c) 2010-2025. 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/instr.h>
#include <simgrid/s4u.hpp>
XBT_LOG_NEW_DEFAULT_CATEGORY(s4u_trace_masterworker, "Messages specific for this example");
namespace sg4 = simgrid::s4u;
struct Task {
std::string name;
std::string category;
double flops;
};
static void master(std::vector<std::string> args)
{
xbt_assert(args.size() > 4, "The master function expects at least 3 arguments");
long tasks_count = std::stol(args[1]);
double compute_cost = std::stod(args[2]);
long communication_cost = std::stol(args[3]);
size_t workers_count = args.size() - 4;
const auto& my_host = sg4::this_actor::get_host()->get_name();
auto* mailbox = sg4::Mailbox::by_name("master_mailbox");
XBT_DEBUG("Got %zu workers and %ld tasks to process", workers_count, tasks_count);
// setting the variable "is_master" (previously declared) to value 1
simgrid::instr::set_host_variable(my_host, "is_master", 1);
simgrid::instr::mark("msmark", "start_send_tasks");
for (int i = 0; i < tasks_count; i++) {
// setting the variable "task_creation" to value i
simgrid::instr::set_host_variable(my_host, "task_creation", i);
// setting the category of task to "compute"
Task task = {"task", "compute", compute_cost};
mailbox->put(new Task(task), communication_cost);
}
simgrid::instr::mark("msmark", "finish_send_tasks");
XBT_DEBUG("All tasks have been dispatched. Request all workers to stop.");
for (unsigned int i = 0; i < workers_count; i++) {
Task finalize = {"finalize", "finalize", 0};
mailbox->put(new Task(finalize), 0);
}
}
static void worker(std::vector<std::string> args)
{
xbt_assert(args.size() == 1, "The worker expects no argument");
const auto& my_host = sg4::this_actor::get_host()->get_name();
auto* mailbox = sg4::Mailbox::by_name("master_mailbox");
simgrid::instr::set_host_variable(my_host, "is_worker", 1);
simgrid::instr::set_host_variable(my_host, "task_computation", 0);
while (true) {
auto task = mailbox->get_unique<Task>();
if (task->name == "finalize") {
break;
}
// adding the task's cost to the variable "task_computation"
simgrid::instr::add_host_variable(my_host, "task_computation", task->flops);
sg4::this_actor::exec_init(task->flops)->set_name(task->name)->set_tracing_category(task->category)->wait();
}
XBT_DEBUG("Exiting now.");
}
int main(int argc, char* argv[])
{
sg4::Engine e(&argc, argv);
xbt_assert(argc > 2, "Usage: %s platform_file deployment_file\n", argv[0]);
e.load_platform(argv[1]);
// declaring user variables
simgrid::instr::declare_host_variable("is_worker");
simgrid::instr::declare_host_variable("is_master");
simgrid::instr::declare_host_variable("task_creation");
simgrid::instr::declare_host_variable("task_computation");
// declaring user markers and values
simgrid::instr::declare_mark("msmark");
simgrid::instr::declare_mark_value("msmark", "start_send_tasks");
simgrid::instr::declare_mark_value("msmark", "finish_send_tasks");
// declaring user categories with RGB colors (values from 0 to 1)
simgrid::instr::declare_tracing_category("compute", "1 0 0"); // compute is red
simgrid::instr::declare_tracing_category("finalize", "0 1 0"); // finalize is green
// categories without user-defined colors receive random colors generated by the tracing system
simgrid::instr::declare_tracing_category("request");
simgrid::instr::declare_tracing_category("report");
e.register_function("master", &master);
e.register_function("worker", &worker);
e.load_deployment(argv[2]);
e.run();
XBT_DEBUG("Simulation is over");
if (const auto& categories = simgrid::instr::get_tracing_categories(); not categories.empty()) {
XBT_INFO("Declared tracing categories:");
for (const auto& category : categories)
XBT_INFO("%s", category.c_str());
}
if (const auto& marks = simgrid::instr::get_marks(); not marks.empty()) {
XBT_INFO("Declared marks:");
for (const auto& mark : marks)
XBT_INFO("%s", mark.c_str());
}
return 0;
}
|
