1 /* Copyright (c) 2007-2021. 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/actor.h"
7 #include "simgrid/engine.h"
8 #include "simgrid/exec.h"
9 #include "simgrid/host.h"
10 #include "simgrid/plugins/live_migration.h"
11 #include "simgrid/vm.h"
13 #include "xbt/asserts.h"
17 XBT_LOG_NEW_DEFAULT_CATEGORY(cloud_capping, "Messages specific for this example");
19 static void worker_main(int argc, char* argv[])
21 xbt_assert(argc == 4);
22 double computation_amount = xbt_str_parse_double(argv[1], "Invalid computation amount: %s");
23 int use_bound = !!xbt_str_parse_int(argv[2], "Second parameter (use_bound) should be 0 or 1 but is: %s");
24 double bound = xbt_str_parse_double(argv[3], "Invalid bound: %s");
26 double clock_sta = simgrid_get_clock();
28 sg_exec_t exec = sg_actor_exec_init(computation_amount);
30 if (bound < 1e-12) /* close enough to 0 without any floating precision surprise */
31 XBT_INFO("bound == 0 means no capping (i.e., unlimited).");
32 sg_exec_set_bound(exec, bound);
36 double clock_end = simgrid_get_clock();
37 double duration = clock_end - clock_sta;
38 double flops_per_sec = computation_amount / duration;
41 XBT_INFO("bound to %f => duration %f (%f flops/s)", bound, duration, flops_per_sec);
43 XBT_INFO("not bound => duration %f (%f flops/s)", duration, flops_per_sec);
46 static void launch_worker(sg_host_t host, const char* pr_name, double computation_amount, int use_bound, double bound)
48 char* argv1 = bprintf("%f", computation_amount);
49 char* argv2 = bprintf("%d", use_bound);
50 char* argv3 = bprintf("%f", bound);
51 const char* argv[] = {pr_name, argv1, argv2, argv3, NULL};
53 sg_actor_create(pr_name, host, worker_main, 4, argv);
60 static void worker_busy_loop(int argc, char* argv[])
64 double speed = xbt_str_parse_double(argv[2], "Invalid speed value");
65 double exec_remain_prev = 1e11;
67 sg_exec_t exec = sg_actor_exec_async(exec_remain_prev);
68 for (int i = 0; i < 10; i++) {
70 double new_bound = (speed / 10) * i;
71 XBT_INFO("set bound of VM1 to %f", new_bound);
72 sg_vm_set_bound(((sg_vm_t)sg_actor_get_host(sg_actor_self())), new_bound);
74 sg_actor_sleep_for(100);
75 double exec_remain_now = sg_exec_get_remaining(exec);
76 double flops_per_sec = exec_remain_prev - exec_remain_now;
77 XBT_INFO("%s@%s: %.0f flops/s", name, sg_host_get_name(sg_actor_get_host(sg_actor_self())), flops_per_sec / 100);
78 exec_remain_prev = exec_remain_now;
79 sg_actor_sleep_for(1);
85 static void test_dynamic_change()
87 sg_host_t pm0 = sg_host_by_name("Fafard");
89 sg_vm_t vm0 = sg_vm_create_core(pm0, "VM0");
90 sg_vm_t vm1 = sg_vm_create_core(pm0, "VM1");
94 const char* w0_argv[] = {"worker0", "Task0", "-1.0", NULL};
95 sg_actor_create("worker0", (sg_host_t)vm0, worker_busy_loop, 3, w0_argv);
97 char* speed = bprintf("%f", sg_host_get_speed(pm0));
98 const char* w1_argv[] = {"worker1", "Task1", speed, NULL};
99 sg_actor_create("worker1", (sg_host_t)vm1, worker_busy_loop, 3, w1_argv);
101 sg_actor_sleep_for(3000); // let the tasks end
108 static void test_one_task(sg_host_t hostA)
110 const double cpu_speed = sg_host_get_speed(hostA);
111 const double computation_amount = cpu_speed * 10;
112 const char* hostA_name = sg_host_get_name(hostA);
114 XBT_INFO("### Test: with/without sg_exec_set_bound");
116 XBT_INFO("### Test: no bound for Task1@%s", hostA_name);
117 launch_worker(hostA, "worker0", computation_amount, 0, 0);
119 sg_actor_sleep_for(1000);
121 XBT_INFO("### Test: 50%% for Task1@%s", hostA_name);
122 launch_worker(hostA, "worker0", computation_amount, 1, cpu_speed / 2);
124 sg_actor_sleep_for(1000);
126 XBT_INFO("### Test: 33%% for Task1@%s", hostA_name);
127 launch_worker(hostA, "worker0", computation_amount, 1, cpu_speed / 3);
129 sg_actor_sleep_for(1000);
131 XBT_INFO("### Test: zero for Task1@%s (i.e., unlimited)", hostA_name);
132 launch_worker(hostA, "worker0", computation_amount, 1, 0);
134 sg_actor_sleep_for(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 sg_actor_sleep_for(1000);
142 static void test_two_tasks(sg_host_t hostA, sg_host_t hostB)
144 const double cpu_speed = sg_host_get_speed(hostA);
145 xbt_assert(cpu_speed == sg_host_get_speed(hostB));
146 const double computation_amount = cpu_speed * 10;
147 const char* hostA_name = sg_host_get_name(hostA);
148 const char* hostB_name = sg_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 sg_actor_sleep_for(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 sg_actor_sleep_for(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 sg_actor_sleep_for(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 sg_actor_sleep_for(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 sg_actor_sleep_for(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 sg_actor_sleep_for(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 sg_actor_sleep_for(1000);
193 static void master_main(int argc, char* argv[])
195 sg_host_t pm0 = sg_host_by_name("Fafard");
196 sg_host_t pm1 = sg_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 sg_vm_t vm0 = sg_vm_create_core(pm0, "VM0");
209 XBT_INFO("# 3. Put a single task on a VM. ");
210 test_one_task((sg_host_t)vm0);
213 XBT_INFO("# 4. Put two tasks on a VM.");
214 test_two_tasks((sg_host_t)vm0, (sg_host_t)vm0);
219 vm0 = sg_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, (sg_host_t)vm0);
228 vm0 = sg_vm_create_core(pm0, "VM0");
229 double cpu_speed = sg_host_get_speed(pm0);
230 sg_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((sg_host_t)vm0);
237 XBT_INFO("# 8. Put two tasks on the VM capped by 10%%.");
238 test_two_tasks((sg_host_t)vm0, (sg_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, (sg_host_t)vm0);
247 vm0 = sg_vm_create_core(pm0, "VM0");
249 sg_vm_set_ramsize(vm0, 1e9); // 1GB
252 cpu_speed = sg_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((sg_host_t)vm0, "worker0", computation_amount, 0, 0);
260 sg_actor_sleep_for(1000);
263 XBT_INFO("# 10. (b) set 10%% bound to the VM, and then put a task on the VM.");
264 sg_vm_set_bound(vm0, cpu_speed / 10);
265 launch_worker((sg_host_t)vm0, "worker0", computation_amount, 0, 0);
266 sg_actor_sleep_for(1000);
269 XBT_INFO("# 10. (c) migrate");
270 sg_vm_migrate(vm0, pm1);
273 XBT_INFO("# 10. (d) Put a task again on the VM.");
274 launch_worker((sg_host_t)vm0, "worker0", computation_amount, 0, 0);
275 sg_actor_sleep_for(1000);
280 XBT_INFO("# 11. Change a bound dynamically.");
281 test_dynamic_change();
284 int main(int argc, char* argv[])
286 /* Get the arguments */
287 simgrid_init(&argc, argv);
288 sg_vm_live_migration_plugin_init();
290 /* load the platform file */
291 xbt_assert(argc == 2, "Usage: %s platform_file\n\tExample: %s ../platforms/small_platform.xml\n", argv[0], argv[0]);
293 simgrid_load_platform(argv[1]);
295 sg_actor_create("master_", sg_host_by_name("Fafard"), master_main, 0, NULL);
298 XBT_INFO("Bye (simulation time %g)", simgrid_get_clock());