1 /* Copyright (c) 2007-2020. 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 #include "simgrid/msg.h"
7 #include "simgrid/plugins/live_migration.h"
9 XBT_LOG_NEW_DEFAULT_CATEGORY(msg_test, "Messages specific for this msg example");
11 /** @addtogroup MSG_examples
13 * - <b>cloud/bound.c</b>: Demonstrates the use of @ref MSG_task_set_bound
16 static int worker_main(int argc, char* argv[])
18 xbt_assert(argc == 4);
19 double computation_amount = xbt_str_parse_double(argv[1], "Invalid computation amount: %s");
20 int use_bound = xbt_str_parse_int(argv[2], "Second parameter (use_bound) should be 0 or 1 but is: %s");
21 double bound = xbt_str_parse_double(argv[3], "Invalid bound: %s");
23 double clock_sta = MSG_get_clock();
25 msg_task_t task = MSG_task_create("Task", computation_amount, 0, NULL);
27 MSG_task_set_bound(task, bound);
28 MSG_task_execute(task);
29 MSG_task_destroy(task);
31 double clock_end = MSG_get_clock();
32 double duration = clock_end - clock_sta;
33 double flops_per_sec = computation_amount / duration;
36 XBT_INFO("bound to %f => duration %f (%f flops/s)", bound, duration, flops_per_sec);
38 XBT_INFO("not bound => duration %f (%f flops/s)", duration, flops_per_sec);
43 static void launch_worker(msg_host_t host, const char* pr_name, double computation_amount, int use_bound, double bound)
45 char** argv = xbt_new(char*, 5);
46 argv[0] = xbt_strdup(pr_name);
47 argv[1] = bprintf("%f", computation_amount);
48 argv[2] = bprintf("%d", use_bound);
49 argv[3] = bprintf("%f", bound);
52 MSG_process_create_with_arguments(pr_name, worker_main, NULL, host, 4, argv);
55 static int worker_busy_loop_main(XBT_ATTRIB_UNUSED int argc, XBT_ATTRIB_UNUSED char* argv[])
57 msg_task_t* task = MSG_process_get_data(MSG_process_self());
58 MSG_task_execute(*task);
59 MSG_task_destroy(*task);
64 static void test_dynamic_change(void)
66 const double DOUBLE_MAX = 1e11;
67 msg_host_t pm0 = MSG_host_by_name("Fafard");
69 msg_vm_t vm0 = MSG_vm_create_core(pm0, "VM0");
70 msg_vm_t vm1 = MSG_vm_create_core(pm0, "VM1");
74 msg_task_t task0 = MSG_task_create("Task0", DOUBLE_MAX, 0, NULL);
75 msg_task_t task1 = MSG_task_create("Task1", DOUBLE_MAX, 0, NULL);
76 MSG_process_create("worker0", worker_busy_loop_main, &task0, (msg_host_t)vm0);
77 MSG_process_create("worker1", worker_busy_loop_main, &task1, (msg_host_t)vm1);
79 double task0_remain_prev = MSG_task_get_flops_amount(task0);
80 double task1_remain_prev = MSG_task_get_flops_amount(task1);
82 const double cpu_speed = MSG_host_get_speed(pm0);
83 for (int i = 0; i < 10; i++) {
84 double new_bound = (cpu_speed / 10) * i;
85 XBT_INFO("set bound of VM1 to %f", new_bound);
86 MSG_vm_set_bound(vm1, new_bound);
87 MSG_process_sleep(100);
89 double task0_remain_now = MSG_task_get_flops_amount(task0);
90 double task1_remain_now = MSG_task_get_flops_amount(task1);
92 double task0_flops_per_sec = task0_remain_prev - task0_remain_now;
93 double task1_flops_per_sec = task1_remain_prev - task1_remain_now;
95 XBT_INFO("Task0@VM0: %f flops/s", task0_flops_per_sec / 100);
96 XBT_INFO("Task1@VM1: %f flops/s", task1_flops_per_sec / 100);
98 task0_remain_prev = task0_remain_now;
99 task1_remain_prev = task1_remain_now;
102 MSG_process_sleep(2000); // let the tasks end
108 static void test_one_task(msg_host_t hostA)
110 const double cpu_speed = MSG_host_get_speed(hostA);
111 const double computation_amount = cpu_speed * 10;
112 const char* hostA_name = MSG_host_get_name(hostA);
114 XBT_INFO("### Test: with/without MSG_task_set_bound");
116 XBT_INFO("### Test: no bound for Task1@%s", hostA_name);
117 launch_worker(hostA, "worker0", computation_amount, 0, 0);
119 MSG_process_sleep(1000);
121 XBT_INFO("### Test: 50%% for Task1@%s", hostA_name);
122 launch_worker(hostA, "worker0", computation_amount, 1, cpu_speed / 2);
124 MSG_process_sleep(1000);
126 XBT_INFO("### Test: 33%% for Task1@%s", hostA_name);
127 launch_worker(hostA, "worker0", computation_amount, 1, cpu_speed / 3);
129 MSG_process_sleep(1000);
131 XBT_INFO("### Test: zero for Task1@%s (i.e., unlimited)", hostA_name);
132 launch_worker(hostA, "worker0", computation_amount, 1, 0);
134 MSG_process_sleep(1000);
136 XBT_INFO("### Test: 200%% for Task1@%s (i.e., meaningless)", hostA_name);
137 launch_worker(hostA, "worker0", computation_amount, 1, cpu_speed * 2);
139 MSG_process_sleep(1000);
142 static void test_two_tasks(msg_host_t hostA, msg_host_t hostB)
144 const double cpu_speed = MSG_host_get_speed(hostA);
145 xbt_assert(cpu_speed == MSG_host_get_speed(hostB));
146 const double computation_amount = cpu_speed * 10;
147 const char* hostA_name = MSG_host_get_name(hostA);
148 const char* hostB_name = MSG_host_get_name(hostB);
150 XBT_INFO("### Test: no bound for Task1@%s, no bound for Task2@%s", hostA_name, hostB_name);
151 launch_worker(hostA, "worker0", computation_amount, 0, 0);
152 launch_worker(hostB, "worker1", computation_amount, 0, 0);
154 MSG_process_sleep(1000);
156 XBT_INFO("### Test: 0 for Task1@%s, 0 for Task2@%s (i.e., unlimited)", hostA_name, hostB_name);
157 launch_worker(hostA, "worker0", computation_amount, 1, 0);
158 launch_worker(hostB, "worker1", computation_amount, 1, 0);
160 MSG_process_sleep(1000);
162 XBT_INFO("### Test: 50%% for Task1@%s, 50%% for Task2@%s", hostA_name, hostB_name);
163 launch_worker(hostA, "worker0", computation_amount, 1, cpu_speed / 2);
164 launch_worker(hostB, "worker1", computation_amount, 1, cpu_speed / 2);
166 MSG_process_sleep(1000);
168 XBT_INFO("### Test: 25%% for Task1@%s, 25%% for Task2@%s", hostA_name, hostB_name);
169 launch_worker(hostA, "worker0", computation_amount, 1, cpu_speed / 4);
170 launch_worker(hostB, "worker1", computation_amount, 1, cpu_speed / 4);
172 MSG_process_sleep(1000);
174 XBT_INFO("### Test: 75%% for Task1@%s, 100%% for Task2@%s", hostA_name, hostB_name);
175 launch_worker(hostA, "worker0", computation_amount, 1, cpu_speed * 0.75);
176 launch_worker(hostB, "worker1", computation_amount, 1, cpu_speed);
178 MSG_process_sleep(1000);
180 XBT_INFO("### Test: no bound for Task1@%s, 25%% for Task2@%s", hostA_name, hostB_name);
181 launch_worker(hostA, "worker0", computation_amount, 0, 0);
182 launch_worker(hostB, "worker1", computation_amount, 1, cpu_speed / 4);
184 MSG_process_sleep(1000);
186 XBT_INFO("### Test: 75%% for Task1@%s, 25%% for Task2@%s", hostA_name, hostB_name);
187 launch_worker(hostA, "worker0", computation_amount, 1, cpu_speed * 0.75);
188 launch_worker(hostB, "worker1", computation_amount, 1, cpu_speed / 4);
190 MSG_process_sleep(1000);
193 static int master_main(XBT_ATTRIB_UNUSED int argc, XBT_ATTRIB_UNUSED char* argv[])
195 msg_host_t pm0 = MSG_host_by_name("Fafard");
196 msg_host_t pm1 = MSG_host_by_name("Fafard");
198 XBT_INFO("# 1. Put a single task on a PM. ");
202 XBT_INFO("# 2. Put two tasks on a PM.");
203 test_two_tasks(pm0, pm0);
206 msg_vm_t vm0 = MSG_vm_create_core(pm0, "VM0");
209 XBT_INFO("# 3. Put a single task on a VM. ");
210 test_one_task((msg_host_t)vm0);
213 XBT_INFO("# 4. Put two tasks on a VM.");
214 test_two_tasks((msg_host_t)vm0, (msg_host_t)vm0);
219 vm0 = MSG_vm_create_core(pm0, "VM0");
222 XBT_INFO("# 6. Put a task on a PM and a task on a VM.");
223 test_two_tasks(pm0, (msg_host_t)vm0);
228 vm0 = MSG_vm_create_core(pm0, "VM0");
229 double cpu_speed = MSG_host_get_speed(pm0);
230 MSG_vm_set_bound(vm0, cpu_speed / 10);
233 XBT_INFO("# 7. Put a single task on the VM capped by 10%%.");
234 test_one_task((msg_host_t)vm0);
237 XBT_INFO("# 8. Put two tasks on the VM capped by 10%%.");
238 test_two_tasks((msg_host_t)vm0, (msg_host_t)vm0);
241 XBT_INFO("# 9. Put a task on a PM and a task on the VM capped by 10%%.");
242 test_two_tasks(pm0, (msg_host_t)vm0);
247 vm0 = MSG_vm_create_core(pm0, "VM0");
249 MSG_vm_set_ramsize(vm0, 1e9); // 1GB
252 cpu_speed = MSG_host_get_speed(pm0);
255 XBT_INFO("# 10. Test migration");
256 const double computation_amount = cpu_speed * 10;
258 XBT_INFO("# 10. (a) Put a task on a VM without any bound.");
259 launch_worker((msg_host_t)vm0, "worker0", computation_amount, 0, 0);
260 MSG_process_sleep(1000);
263 XBT_INFO("# 10. (b) set 10%% bound to the VM, and then put a task on the VM.");
264 MSG_vm_set_bound(vm0, cpu_speed / 10);
265 launch_worker((msg_host_t)vm0, "worker0", computation_amount, 0, 0);
266 MSG_process_sleep(1000);
269 XBT_INFO("# 10. (c) migrate");
270 MSG_vm_migrate(vm0, pm1);
273 XBT_INFO("# 10. (d) Put a task again on the VM.");
274 launch_worker((msg_host_t)vm0, "worker0", computation_amount, 0, 0);
275 MSG_process_sleep(1000);
280 XBT_INFO("# 11. Change a bound dynamically.");
281 test_dynamic_change();
286 static void launch_master(msg_host_t host)
288 const char* pr_name = "master_";
289 char** argv = xbt_new(char*, 2);
290 argv[0] = xbt_strdup(pr_name);
293 MSG_process_create_with_arguments(pr_name, master_main, NULL, host, 1, argv);
296 int main(int argc, char* argv[])
298 /* Get the arguments */
299 MSG_init(&argc, argv);
300 MSG_vm_live_migration_plugin_init();
302 /* load the platform file */
303 xbt_assert(argc == 2, "Usage: %s platform_file\n\tExample: %s ../platforms/small_platform.xml\n", argv[0], argv[0]);
305 MSG_create_environment(argv[1]);
307 msg_host_t pm0 = MSG_host_by_name("Fafard");
310 int res = MSG_main();
311 XBT_INFO("Bye (simulation time %g)", MSG_get_clock());
313 return !(res == MSG_OK);