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[simgrid.git] / examples / c / cloud-capping / cloud-capping.c
1 /* Copyright (c) 2007-2020. The SimGrid Team. All rights reserved.          */
2
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. */
5
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"
12
13 #include "xbt/asserts.h"
14 #include "xbt/log.h"
15 #include "xbt/str.h"
16
17 XBT_LOG_NEW_DEFAULT_CATEGORY(cloud_capping, "Messages specific for this example");
18
19 static void worker_main(int argc, char* argv[])
20 {
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");
25
26   double clock_sta = simgrid_get_clock();
27
28   sg_exec_t exec = sg_actor_exec_init(computation_amount);
29   if (use_bound) {
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);
33   }
34   sg_exec_wait(exec);
35
36   double clock_end     = simgrid_get_clock();
37   double duration      = clock_end - clock_sta;
38   double flops_per_sec = computation_amount / duration;
39
40   if (use_bound)
41     XBT_INFO("bound to %f => duration %f (%f flops/s)", bound, duration, flops_per_sec);
42   else
43     XBT_INFO("not bound => duration %f (%f flops/s)", duration, flops_per_sec);
44 }
45
46 static void launch_worker(sg_host_t host, const char* pr_name, double computation_amount, int use_bound, double bound)
47 {
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};
52
53   sg_actor_create(pr_name, host, worker_main, 4, argv);
54
55   free(argv1);
56   free(argv2);
57   free(argv3);
58 }
59
60 static void worker_busy_loop(int argc, char* argv[])
61 {
62   xbt_assert(argc > 2);
63   char* name              = argv[1];
64   double speed            = xbt_str_parse_double(argv[2], "Invalid speed value");
65   double exec_remain_prev = 1e11;
66
67   sg_exec_t exec = sg_actor_exec_async(exec_remain_prev);
68   for (int i = 0; i < 10; i++) {
69     if (speed > 0) {
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);
73     }
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);
80   }
81
82   sg_exec_wait(exec);
83 }
84
85 static void test_dynamic_change()
86 {
87   sg_host_t pm0 = sg_host_by_name("Fafard");
88
89   sg_vm_t vm0 = sg_vm_create_core(pm0, "VM0");
90   sg_vm_t vm1 = sg_vm_create_core(pm0, "VM1");
91   sg_vm_start(vm0);
92   sg_vm_start(vm1);
93
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);
96
97   char* speed           = bprintf("%f", sg_host_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);
100
101   sg_actor_sleep_for(3000); // let the tasks end
102
103   sg_vm_destroy(vm0);
104   sg_vm_destroy(vm1);
105   free(speed);
106 }
107
108 static void test_one_task(sg_host_t hostA)
109 {
110   const double cpu_speed          = sg_host_speed(hostA);
111   const double computation_amount = cpu_speed * 10;
112   const char* hostA_name          = sg_host_get_name(hostA);
113
114   XBT_INFO("### Test: with/without sg_exec_set_bound");
115
116   XBT_INFO("### Test: no bound for Task1@%s", hostA_name);
117   launch_worker(hostA, "worker0", computation_amount, 0, 0);
118
119   sg_actor_sleep_for(1000);
120
121   XBT_INFO("### Test: 50%% for Task1@%s", hostA_name);
122   launch_worker(hostA, "worker0", computation_amount, 1, cpu_speed / 2);
123
124   sg_actor_sleep_for(1000);
125
126   XBT_INFO("### Test: 33%% for Task1@%s", hostA_name);
127   launch_worker(hostA, "worker0", computation_amount, 1, cpu_speed / 3);
128
129   sg_actor_sleep_for(1000);
130
131   XBT_INFO("### Test: zero for Task1@%s (i.e., unlimited)", hostA_name);
132   launch_worker(hostA, "worker0", computation_amount, 1, 0);
133
134   sg_actor_sleep_for(1000);
135
136   XBT_INFO("### Test: 200%% for Task1@%s (i.e., meaningless)", hostA_name);
137   launch_worker(hostA, "worker0", computation_amount, 1, cpu_speed * 2);
138
139   sg_actor_sleep_for(1000);
140 }
141
142 static void test_two_tasks(sg_host_t hostA, sg_host_t hostB)
143 {
144   const double cpu_speed = sg_host_speed(hostA);
145   xbt_assert(cpu_speed == sg_host_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);
149
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);
153
154   sg_actor_sleep_for(1000);
155
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);
159
160   sg_actor_sleep_for(1000);
161
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);
165
166   sg_actor_sleep_for(1000);
167
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);
171
172   sg_actor_sleep_for(1000);
173
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);
177
178   sg_actor_sleep_for(1000);
179
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);
183
184   sg_actor_sleep_for(1000);
185
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);
189
190   sg_actor_sleep_for(1000);
191 }
192
193 static void master_main(int argc, char* argv[])
194 {
195   sg_host_t pm0 = sg_host_by_name("Fafard");
196   sg_host_t pm1 = sg_host_by_name("Fafard");
197
198   XBT_INFO("# 1. Put a single task on a PM. ");
199   test_one_task(pm0);
200   XBT_INFO(" ");
201
202   XBT_INFO("# 2. Put two tasks on a PM.");
203   test_two_tasks(pm0, pm0);
204   XBT_INFO(" ");
205
206   sg_vm_t vm0 = sg_vm_create_core(pm0, "VM0");
207   sg_vm_start(vm0);
208
209   XBT_INFO("# 3. Put a single task on a VM. ");
210   test_one_task((sg_host_t)vm0);
211   XBT_INFO(" ");
212
213   XBT_INFO("# 4. Put two tasks on a VM.");
214   test_two_tasks((sg_host_t)vm0, (sg_host_t)vm0);
215   XBT_INFO(" ");
216
217   sg_vm_destroy(vm0);
218
219   vm0 = sg_vm_create_core(pm0, "VM0");
220   sg_vm_start(vm0);
221
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);
224   XBT_INFO(" ");
225
226   sg_vm_destroy(vm0);
227
228   vm0              = sg_vm_create_core(pm0, "VM0");
229   double cpu_speed = sg_host_speed(pm0);
230   sg_vm_set_bound(vm0, cpu_speed / 10);
231   sg_vm_start(vm0);
232
233   XBT_INFO("# 7. Put a single task on the VM capped by 10%%.");
234   test_one_task((sg_host_t)vm0);
235   XBT_INFO(" ");
236
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);
239   XBT_INFO(" ");
240
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);
243   XBT_INFO(" ");
244
245   sg_vm_destroy(vm0);
246
247   vm0 = sg_vm_create_core(pm0, "VM0");
248
249   sg_vm_set_ramsize(vm0, 1e9); // 1GB
250   sg_vm_start(vm0);
251
252   cpu_speed = sg_host_speed(pm0);
253   sg_vm_start(vm0);
254
255   XBT_INFO("# 10. Test migration");
256   const double computation_amount = cpu_speed * 10;
257
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);
261   XBT_INFO(" ");
262
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);
267   XBT_INFO(" ");
268
269   XBT_INFO("# 10. (c) migrate");
270   sg_vm_migrate(vm0, pm1);
271   XBT_INFO(" ");
272
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);
276   XBT_INFO(" ");
277
278   sg_vm_destroy(vm0);
279
280   XBT_INFO("# 11. Change a bound dynamically.");
281   test_dynamic_change();
282 }
283
284 int main(int argc, char* argv[])
285 {
286   /* Get the arguments */
287   simgrid_init(&argc, argv);
288   sg_vm_live_migration_plugin_init();
289
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]);
292
293   simgrid_load_platform(argv[1]);
294
295   sg_actor_create("master_", sg_host_by_name("Fafard"), master_main, 0, NULL);
296
297   simgrid_run();
298   XBT_INFO("Bye (simulation time %g)", simgrid_get_clock());
299
300   return 0;
301 }