1 /* Copyright (c) 2007-2015. The SimGrid Team.
2 * All rights reserved. */
4 /* This program is free software; you can redistribute it and/or modify it
5 * under the terms of the license (GNU LGPL) which comes with this package. */
7 #include "simgrid/msg.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 double computation_amount = xbt_str_parse_double(argv[1], "Invalid computation amount: %s");
19 int use_bound = xbt_str_parse_int(argv[2], "Second parameter (use_bound) should be 0 or 1 but is: %s");
20 double bound = xbt_str_parse_double(argv[3], "Invalid bound: %s");
22 double clock_sta = MSG_get_clock();
24 msg_task_t task = MSG_task_create("Task", computation_amount, 0, NULL);
26 MSG_task_set_bound(task, bound);
27 MSG_task_execute(task);
28 MSG_task_destroy(task);
30 double clock_end = MSG_get_clock();
31 double duration = clock_end - clock_sta;
32 double flops_per_sec = computation_amount / duration;
35 XBT_INFO("bound to %f => duration %f (%f flops/s)", bound, duration, flops_per_sec);
37 XBT_INFO("not bound => duration %f (%f flops/s)", duration, flops_per_sec);
42 static void launch_worker(msg_host_t host, const char *pr_name, double computation_amount, int use_bound, double bound)
44 char **argv = xbt_new(char *, 5);
45 argv[0] = xbt_strdup(pr_name);
46 argv[1] = bprintf("%f", computation_amount);
47 argv[2] = bprintf("%d", use_bound);
48 argv[3] = bprintf("%f", bound);
51 MSG_process_create_with_arguments(pr_name, worker_main, NULL, host, 4, argv);
54 static int worker_busy_loop_main(int argc, char *argv[])
56 msg_task_t *task = MSG_process_get_data(MSG_process_self());
57 MSG_task_execute(*task);
58 MSG_task_destroy(*task);
64 #define DOUBLE_MAX 1e11
66 static void test_dynamic_change(void)
68 msg_host_t pm0 = MSG_host_by_name("Fafard");
70 msg_host_t vm0 = MSG_vm_create_core(pm0, "VM0");
71 msg_host_t vm1 = MSG_vm_create_core(pm0, "VM1");
75 msg_task_t task0 = MSG_task_create("Task0", DOUBLE_MAX, 0, NULL);
76 msg_task_t task1 = MSG_task_create("Task1", DOUBLE_MAX, 0, NULL);
77 MSG_process_create("worker0", worker_busy_loop_main, &task0, vm0);
78 MSG_process_create("worker1", worker_busy_loop_main, &task1, vm1);
80 double task0_remain_prev = MSG_task_get_flops_amount(task0);
81 double task1_remain_prev = MSG_task_get_flops_amount(task1);
84 const double cpu_speed = MSG_host_get_speed(pm0);
86 for (i = 0; i < 10; i++) {
87 double new_bound = (cpu_speed / 10) * i;
88 XBT_INFO("set bound of VM1 to %f", new_bound);
89 MSG_vm_set_bound(vm1, new_bound);
90 MSG_process_sleep(100);
92 double task0_remain_now = MSG_task_get_flops_amount(task0);
93 double task1_remain_now = MSG_task_get_flops_amount(task1);
95 double task0_flops_per_sec = task0_remain_prev - task0_remain_now;
96 double task1_flops_per_sec = task1_remain_prev - task1_remain_now;
98 XBT_INFO("Task0@VM0: %f flops/s", task0_flops_per_sec / 100);
99 XBT_INFO("Task1@VM1: %f flops/s", task1_flops_per_sec / 100);
101 task0_remain_prev = task0_remain_now;
102 task1_remain_prev = task1_remain_now;
105 MSG_process_sleep(2000); // let the tasks end
111 static void test_one_task(msg_host_t hostA)
113 const double cpu_speed = MSG_host_get_speed(hostA);
114 const double computation_amount = cpu_speed * 10;
115 const char *hostA_name = MSG_host_get_name(hostA);
117 XBT_INFO("### Test: with/without MSG_task_set_bound");
119 XBT_INFO("### Test: no bound for Task1@%s", hostA_name);
120 launch_worker(hostA, "worker0", computation_amount, 0, 0);
122 MSG_process_sleep(1000);
124 XBT_INFO("### Test: 50%% for Task1@%s", hostA_name);
125 launch_worker(hostA, "worker0", computation_amount, 1, cpu_speed / 2);
127 MSG_process_sleep(1000);
129 XBT_INFO("### Test: 33%% for Task1@%s", hostA_name);
130 launch_worker(hostA, "worker0", computation_amount, 1, cpu_speed / 3);
132 MSG_process_sleep(1000);
134 XBT_INFO("### Test: zero for Task1@%s (i.e., unlimited)", hostA_name);
135 launch_worker(hostA, "worker0", computation_amount, 1, 0);
137 MSG_process_sleep(1000);
139 XBT_INFO("### Test: 200%% for Task1@%s (i.e., meaningless)", hostA_name);
140 launch_worker(hostA, "worker0", computation_amount, 1, cpu_speed * 2);
142 MSG_process_sleep(1000);
145 static void test_two_tasks(msg_host_t hostA, msg_host_t hostB)
147 const double cpu_speed = MSG_host_get_speed(hostA);
148 xbt_assert(cpu_speed == MSG_host_get_speed(hostB));
149 const double computation_amount = cpu_speed * 10;
150 const char *hostA_name = MSG_host_get_name(hostA);
151 const char *hostB_name = MSG_host_get_name(hostB);
153 XBT_INFO("### Test: no bound for Task1@%s, no bound for Task2@%s", hostA_name, hostB_name);
154 launch_worker(hostA, "worker0", computation_amount, 0, 0);
155 launch_worker(hostB, "worker1", computation_amount, 0, 0);
157 MSG_process_sleep(1000);
159 XBT_INFO("### Test: 0 for Task1@%s, 0 for Task2@%s (i.e., unlimited)", hostA_name, hostB_name);
160 launch_worker(hostA, "worker0", computation_amount, 1, 0);
161 launch_worker(hostB, "worker1", computation_amount, 1, 0);
163 MSG_process_sleep(1000);
165 XBT_INFO("### Test: 50%% for Task1@%s, 50%% for Task2@%s", hostA_name, hostB_name);
166 launch_worker(hostA, "worker0", computation_amount, 1, cpu_speed / 2);
167 launch_worker(hostB, "worker1", computation_amount, 1, cpu_speed / 2);
169 MSG_process_sleep(1000);
171 XBT_INFO("### Test: 25%% for Task1@%s, 25%% for Task2@%s", hostA_name, hostB_name);
172 launch_worker(hostA, "worker0", computation_amount, 1, cpu_speed / 4);
173 launch_worker(hostB, "worker1", computation_amount, 1, cpu_speed / 4);
175 MSG_process_sleep(1000);
177 XBT_INFO("### Test: 75%% for Task1@%s, 100%% for Task2@%s", hostA_name, hostB_name);
178 launch_worker(hostA, "worker0", computation_amount, 1, cpu_speed * 0.75);
179 launch_worker(hostB, "worker1", computation_amount, 1, cpu_speed);
181 MSG_process_sleep(1000);
183 XBT_INFO("### Test: no bound for Task1@%s, 25%% for Task2@%s", hostA_name, hostB_name);
184 launch_worker(hostA, "worker0", computation_amount, 0, 0);
185 launch_worker(hostB, "worker1", computation_amount, 1, cpu_speed / 4);
187 MSG_process_sleep(1000);
189 XBT_INFO("### Test: 75%% for Task1@%s, 25%% for Task2@%s", hostA_name, hostB_name);
190 launch_worker(hostA, "worker0", computation_amount, 1, cpu_speed * 0.75);
191 launch_worker(hostB, "worker1", computation_amount, 1, cpu_speed / 4);
193 MSG_process_sleep(1000);
196 static int master_main(int argc, char *argv[])
198 msg_host_t pm0 = MSG_host_by_name("Fafard");
199 msg_host_t pm1 = MSG_host_by_name("Fafard");
201 XBT_INFO("# 1. Put a single task on a PM. ");
205 XBT_INFO("# 2. Put two tasks on a PM.");
206 test_two_tasks(pm0, pm0);
209 msg_host_t vm0 = MSG_vm_create_core(pm0, "VM0");
212 XBT_INFO("# 3. Put a single task on a VM. ");
216 XBT_INFO("# 4. Put two tasks on a VM.");
217 test_two_tasks(vm0, vm0);
222 vm0 = MSG_vm_create_core(pm0, "VM0");
225 XBT_INFO("# 6. Put a task on a PM and a task on a VM.");
226 test_two_tasks(pm0, vm0);
231 vm0 = MSG_vm_create_core(pm0, "VM0");
232 double cpu_speed = MSG_host_get_speed(pm0);
233 MSG_vm_set_bound(vm0, cpu_speed / 10);
236 XBT_INFO("# 7. Put a single task on the VM capped by 10%%.");
240 XBT_INFO("# 8. Put two tasks on the VM capped by 10%%.");
241 test_two_tasks(vm0, vm0);
244 XBT_INFO("# 9. Put a task on a PM and a task on the VM capped by 10%%.");
245 test_two_tasks(pm0, vm0);
250 vm0 = MSG_vm_create_core(pm0, "VM0");
252 s_vm_params_t params;
253 memset(¶ms, 0, sizeof(params));
254 params.ramsize = 1L * 1000 * 1000 * 1000; // 1Gbytes
255 MSG_host_set_params(vm0, ¶ms);
258 cpu_speed = MSG_host_get_speed(pm0);
261 XBT_INFO("# 10. Test migration");
262 const double computation_amount = cpu_speed * 10;
264 XBT_INFO("# 10. (a) Put a task on a VM without any bound.");
265 launch_worker(vm0, "worker0", computation_amount, 0, 0);
266 MSG_process_sleep(1000);
269 XBT_INFO("# 10. (b) set 10%% bound to the VM, and then put a task on the VM.");
270 MSG_vm_set_bound(vm0, cpu_speed / 10);
271 launch_worker(vm0, "worker0", computation_amount, 0, 0);
272 MSG_process_sleep(1000);
275 XBT_INFO("# 10. (c) migrate");
276 MSG_vm_migrate(vm0, pm1);
279 XBT_INFO("# 10. (d) Put a task again on the VM.");
280 launch_worker(vm0, "worker0", computation_amount, 0, 0);
281 MSG_process_sleep(1000);
286 XBT_INFO("# 11. Change a bound dynamically.");
287 test_dynamic_change();
292 static void launch_master(msg_host_t host)
294 const char *pr_name = "master_";
295 char **argv = xbt_new(char *, 2);
296 argv[0] = xbt_strdup(pr_name);
299 MSG_process_create_with_arguments(pr_name, master_main, NULL, host, 1, argv);
302 int main(int argc, char *argv[])
304 /* Get the arguments */
305 MSG_init(&argc, argv);
307 /* load the platform file */
308 xbt_assert(argc == 2, "Usage: %s platform_file\n\tExample: %s ../platforms/small_platform.xml\n", argv[0], argv[0]);
310 MSG_create_environment(argv[1]);
312 msg_host_t pm0 = MSG_host_by_name("Fafard");
315 int res = MSG_main();
316 XBT_INFO("Bye (simulation time %g)", MSG_get_clock());
318 return !(res == MSG_OK);