3 /* Copyright (c) 2004 Arnaud Legrand. All rights reserved. */
5 /* This program is free software; you can redistribute it and/or modify it
6 * under the terms of the license (GNU LGPL) which comes with this package. */
8 #include "network_private.h"
12 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(surf_network, surf,
13 "Logging specific to the SURF network module");
15 surf_model_t surf_network_model = NULL;
16 static lmm_system_t network_maxmin_system = NULL;
17 static void (*network_solve) (lmm_system_t) = NULL;
19 double latency_factor = 1.0; /* default value */
20 double bandwidth_factor = 1.0; /* default value */
21 double weight_S_parameter = 0.0; /* default value */
23 double sg_tcp_gamma = 0.0;
26 static link_CM02_t link_new(char *name,
28 tmgr_trace_t bw_trace,
30 tmgr_trace_t lat_trace,
31 e_surf_resource_state_t
33 tmgr_trace_t state_trace,
34 e_surf_link_sharing_policy_t
35 policy, xbt_dict_t properties)
37 link_CM02_t nw_link = (link_CM02_t)
38 surf_resource_lmm_new(sizeof(s_link_CM02_t),
39 surf_network_model, name, properties,
40 network_maxmin_system,
41 bandwidth_factor * bw_initial,
43 state_initial, state_trace,
44 bw_initial, bw_trace);
46 xbt_assert1(!xbt_dict_get_or_null(surf_network_model->resource_set, name),
47 "Link '%s' declared several times in the platform file.", name);
49 nw_link->lat_current = lat_initial;
52 tmgr_history_add_trace(history, lat_trace, 0.0, 0, nw_link);
54 if (policy == SURF_LINK_FATPIPE)
55 lmm_constraint_shared(nw_link->lmm_resource.constraint);
57 xbt_dict_set(surf_network_model->resource_set, name, nw_link,
63 static void parse_link_init(void)
67 tmgr_trace_t bw_trace;
69 tmgr_trace_t lat_trace;
70 e_surf_resource_state_t state_initial_link = SURF_RESOURCE_ON;
71 e_surf_link_sharing_policy_t policy_initial_link = SURF_LINK_SHARED;
72 tmgr_trace_t state_trace;
74 name_link = xbt_strdup(A_surfxml_link_id);
75 surf_parse_get_double(&bw_initial, A_surfxml_link_bandwidth);
76 bw_trace = tmgr_trace_new(A_surfxml_link_bandwidth_file);
77 surf_parse_get_double(&lat_initial, A_surfxml_link_latency);
78 lat_trace = tmgr_trace_new(A_surfxml_link_latency_file);
80 xbt_assert0((A_surfxml_link_state == A_surfxml_link_state_ON)
81 || (A_surfxml_link_state ==
82 A_surfxml_link_state_OFF), "Invalid state");
83 if (A_surfxml_link_state == A_surfxml_link_state_ON)
84 state_initial_link = SURF_RESOURCE_ON;
85 else if (A_surfxml_link_state == A_surfxml_link_state_OFF)
86 state_initial_link = SURF_RESOURCE_OFF;
88 if (A_surfxml_link_sharing_policy == A_surfxml_link_sharing_policy_SHARED)
89 policy_initial_link = SURF_LINK_SHARED;
90 else if (A_surfxml_link_sharing_policy ==
91 A_surfxml_link_sharing_policy_FATPIPE)
92 policy_initial_link = SURF_LINK_FATPIPE;
94 state_trace = tmgr_trace_new(A_surfxml_link_state_file);
96 link_new(name_link, bw_initial, bw_trace,
97 lat_initial, lat_trace, state_initial_link, state_trace,
98 policy_initial_link, xbt_dict_new());
102 static void add_traces(void)
104 xbt_dict_cursor_t cursor = NULL;
105 char *trace_name, *elm;
107 static int called = 0;
112 /* connect all traces relative to network */
113 xbt_dict_foreach(trace_connect_list_link_avail, cursor, trace_name, elm) {
114 tmgr_trace_t trace = xbt_dict_get_or_null(traces_set_list, trace_name);
116 xbt_dict_get_or_null(surf_network_model->resource_set, elm);
118 xbt_assert2(link, "Cannot connect trace %s to link %s: link undefined",
120 xbt_assert2(trace, "Cannot connect trace %s to link %s: trace undefined",
123 link->lmm_resource.state_event =
124 tmgr_history_add_trace(history, trace, 0.0, 0, link);
127 xbt_dict_foreach(trace_connect_list_bandwidth, cursor, trace_name, elm) {
128 tmgr_trace_t trace = xbt_dict_get_or_null(traces_set_list, trace_name);
130 xbt_dict_get_or_null(surf_network_model->resource_set, elm);
132 xbt_assert2(link, "Cannot connect trace %s to link %s: link undefined",
134 xbt_assert2(trace, "Cannot connect trace %s to link %s: trace undefined",
137 link->lmm_resource.power.event =
138 tmgr_history_add_trace(history, trace, 0.0, 0, link);
141 xbt_dict_foreach(trace_connect_list_latency, cursor, trace_name, elm) {
142 tmgr_trace_t trace = xbt_dict_get_or_null(traces_set_list, trace_name);
144 xbt_dict_get_or_null(surf_network_model->resource_set, elm);
146 xbt_assert2(link, "Cannot connect trace %s to link %s: link undefined",
148 xbt_assert2(trace, "Cannot connect trace %s to link %s: trace undefined",
151 link->lat_event = tmgr_history_add_trace(history, trace, 0.0, 0, link);
155 static void define_callbacks(const char *file)
157 /* Figuring out the network links */
158 surfxml_add_callback(STag_surfxml_link_cb_list, &parse_link_init);
159 surfxml_add_callback(ETag_surfxml_platform_cb_list, &add_traces);
162 static int resource_used(void *resource_id)
164 return lmm_constraint_used(network_maxmin_system,
165 ((surf_resource_lmm_t) resource_id)->constraint);
168 static int action_unref(surf_action_t action)
171 if (!action->refcount) {
172 xbt_swag_remove(action, action->state_set);
173 if (((surf_action_network_CM02_t) action)->variable)
174 lmm_variable_free(network_maxmin_system,
175 ((surf_action_network_CM02_t) action)->variable);
182 static void action_cancel(surf_action_t action)
187 static void action_recycle(surf_action_t action)
192 static double action_get_remains(surf_action_t action)
194 return action->remains;
197 static double share_resources(double now)
199 s_surf_action_network_CM02_t s_action;
200 surf_action_network_CM02_t action = NULL;
201 xbt_swag_t running_actions = surf_network_model->states.running_action_set;
204 min = generic_maxmin_share_resources(running_actions,
205 xbt_swag_offset(s_action,
207 network_maxmin_system, network_solve);
209 #define VARIABLE(action) (*((lmm_variable_t*)(((char *) (action)) + xbt_swag_offset(s_action, variable) )))
211 xbt_swag_foreach(action, running_actions) {
212 if (action->latency > 0) {
214 min = action->latency;
215 else if (action->latency < min)
216 min = action->latency;
223 static void update_actions_state(double now, double delta)
226 surf_action_network_CM02_t action = NULL;
227 surf_action_network_CM02_t next_action = NULL;
228 xbt_swag_t running_actions = surf_network_model->states.running_action_set;
230 xbt_swag_t failed_actions =
231 surf_network_model->states.failed_action_set;
234 xbt_swag_foreach_safe(action, next_action, running_actions) {
236 if (action->latency > 0) {
237 if (action->latency > deltap) {
238 double_update(&(action->latency), deltap);
241 double_update(&(deltap), action->latency);
242 action->latency = 0.0;
244 if ((action->latency == 0.0) && !(action->suspended))
245 lmm_update_variable_weight(network_maxmin_system, action->variable,
248 double_update(&(action->generic_action.remains),
249 lmm_variable_getvalue(action->variable) * deltap);
250 if (action->generic_action.max_duration != NO_MAX_DURATION)
251 double_update(&(action->generic_action.max_duration), delta);
253 if ((action->generic_action.remains <= 0) &&
254 (lmm_get_variable_weight(action->variable) > 0)) {
255 action->generic_action.finish = surf_get_clock();
256 surf_network_model->action_state_set((surf_action_t) action,
258 } else if ((action->generic_action.max_duration != NO_MAX_DURATION)
259 && (action->generic_action.max_duration <= 0)) {
260 action->generic_action.finish = surf_get_clock();
261 surf_network_model->action_state_set((surf_action_t) action,
269 static void update_resource_state(void *id,
270 tmgr_trace_event_t event_type,
271 double value, double date)
273 link_CM02_t nw_link = id;
274 /* printf("[" "%lg" "] Asking to update network card \"%s\" with value " */
275 /* "%lg" " for event %p\n", surf_get_clock(), nw_link->name, */
276 /* value, event_type); */
278 if (event_type == nw_link->lmm_resource.power.event) {
280 weight_S_parameter / value - weight_S_parameter /
281 (nw_link->lmm_resource.power.peak * nw_link->lmm_resource.power.scale);
282 lmm_variable_t var = NULL;
283 lmm_element_t elem = NULL;
284 surf_action_network_CM02_t action = NULL;
286 nw_link->lmm_resource.power.peak = value;
287 lmm_update_constraint_bound(network_maxmin_system,
288 nw_link->lmm_resource.constraint,
290 (nw_link->lmm_resource.power.peak *
291 nw_link->lmm_resource.power.scale));
292 if (weight_S_parameter > 0) {
293 while ((var = lmm_get_var_from_cnst
294 (network_maxmin_system, nw_link->lmm_resource.constraint,
296 action = lmm_variable_id(var);
297 action->weight += delta;
298 if (!(action->suspended))
299 lmm_update_variable_weight(network_maxmin_system, action->variable,
303 if (tmgr_trace_event_free(event_type))
304 nw_link->lmm_resource.power.event = NULL;
305 } else if (event_type == nw_link->lat_event) {
306 double delta = value - nw_link->lat_current;
307 lmm_variable_t var = NULL;
308 lmm_element_t elem = NULL;
309 surf_action_network_CM02_t action = NULL;
311 nw_link->lat_current = value;
312 while ((var = lmm_get_var_from_cnst
313 (network_maxmin_system, nw_link->lmm_resource.constraint,
315 action = lmm_variable_id(var);
316 action->lat_current += delta;
317 action->weight += delta;
318 if (action->rate < 0)
319 lmm_update_variable_bound(network_maxmin_system, action->variable,
320 sg_tcp_gamma / (2.0 * action->lat_current));
322 lmm_update_variable_bound(network_maxmin_system, action->variable,
324 sg_tcp_gamma / (2.0 *
325 action->lat_current)));
326 if (!(action->suspended))
327 lmm_update_variable_weight(network_maxmin_system, action->variable,
331 if (tmgr_trace_event_free(event_type))
332 nw_link->lat_event = NULL;
333 } else if (event_type == nw_link->lmm_resource.state_event) {
335 nw_link->lmm_resource.state_current = SURF_RESOURCE_ON;
337 lmm_constraint_t cnst = nw_link->lmm_resource.constraint;
338 lmm_variable_t var = NULL;
339 lmm_element_t elem = NULL;
341 nw_link->lmm_resource.state_current = SURF_RESOURCE_OFF;
342 while ((var = lmm_get_var_from_cnst
343 (network_maxmin_system, cnst, &elem))) {
344 surf_action_t action = lmm_variable_id(var);
346 if (surf_action_state_get(action) == SURF_ACTION_RUNNING ||
347 surf_action_state_get(action) == SURF_ACTION_READY) {
348 action->finish = date;
349 surf_network_model->action_state_set(action, SURF_ACTION_FAILED);
353 if (tmgr_trace_event_free(event_type))
354 nw_link->lmm_resource.state_event = NULL;
356 CRITICAL0("Unknown event ! \n");
363 static surf_action_t communicate(const char *src_name, const char *dst_name,
364 int src, int dst, double size, double rate)
366 surf_action_network_CM02_t action = NULL;
367 /* LARGE PLATFORMS HACK:
368 Add a link_CM02_t *link and a int link_nb to network_card_CM02_t. It will represent local links for this node
369 Use the cluster_id for ->id */
370 xbt_dynar_t route = used_routing->get_route(src, dst);
371 /* LARGE PLATFORMS HACK:
372 total_route_size = route_size + src->link_nb + dst->nb */
375 XBT_IN4("(%s,%s,%g,%g)", src_name, dst_name, size, rate);
376 /* LARGE PLATFORMS HACK:
377 assert on total_route_size */
378 xbt_assert2(xbt_dynar_length(route),
379 "You're trying to send data from %s to %s but there is no connection between these two hosts.",
384 xbt_dynar_foreach(route, i, link) {
385 if (link->lmm_resource.state_current == SURF_RESOURCE_OFF) {
391 surf_action_new(sizeof(s_surf_action_network_CM02_t), size,
392 surf_network_model, failed);
394 xbt_swag_insert(action, action->generic_action.state_set);
397 action->latency = 0.0;
398 action->weight = 0.0;
399 xbt_dynar_foreach(route, i, link) {
400 action->latency += link->lat_current;
404 (link->lmm_resource.power.peak * link->lmm_resource.power.scale);
406 /* LARGE PLATFORMS HACK:
407 Add src->link and dst->link latencies */
408 action->lat_current = action->latency;
409 action->latency *= latency_factor;
411 /* LARGE PLATFORMS HACK:
412 lmm_variable_new(..., total_route_size) */
413 if (action->latency > 0)
415 lmm_variable_new(network_maxmin_system, action, 0.0, -1.0,
416 xbt_dynar_length(route));
419 lmm_variable_new(network_maxmin_system, action, 1.0, -1.0,
420 xbt_dynar_length(route));
422 if (action->rate < 0) {
423 if (action->lat_current > 0)
424 lmm_update_variable_bound(network_maxmin_system, action->variable,
425 sg_tcp_gamma / (2.0 * action->lat_current));
427 lmm_update_variable_bound(network_maxmin_system, action->variable,
430 if (action->lat_current > 0)
431 lmm_update_variable_bound(network_maxmin_system, action->variable,
433 sg_tcp_gamma / (2.0 *
434 action->lat_current)));
436 lmm_update_variable_bound(network_maxmin_system, action->variable,
440 xbt_dynar_foreach(route, i, link) {
441 lmm_expand(network_maxmin_system, link->lmm_resource.constraint,
442 action->variable, 1.0);
444 /* LARGE PLATFORMS HACK:
445 expand also with src->link and dst->link */
449 return (surf_action_t) action;
452 static double get_link_bandwidth(const void *link)
454 surf_resource_lmm_t lmm = (surf_resource_lmm_t) link;
455 return lmm->power.peak * lmm->power.scale;
458 static double get_link_latency(const void *link)
460 return ((link_CM02_t) link)->lat_current;
463 static int link_shared(const void *link)
465 return lmm_constraint_is_shared(((surf_resource_lmm_t) link)->constraint);
468 static void action_suspend(surf_action_t action)
470 ((surf_action_network_CM02_t) action)->suspended = 1;
471 lmm_update_variable_weight(network_maxmin_system,
472 ((surf_action_network_CM02_t) action)->variable,
476 static void action_resume(surf_action_t action)
478 if (((surf_action_network_CM02_t) action)->suspended) {
479 lmm_update_variable_weight(network_maxmin_system,
480 ((surf_action_network_CM02_t)
482 ((surf_action_network_CM02_t) action)->weight);
483 ((surf_action_network_CM02_t) action)->suspended = 0;
487 static int action_is_suspended(surf_action_t action)
489 return ((surf_action_network_CM02_t) action)->suspended;
492 static void action_set_max_duration(surf_action_t action, double duration)
494 action->max_duration = duration;
497 static void finalize(void)
499 surf_model_exit(surf_network_model);
500 surf_network_model = NULL;
502 used_routing->finalize();
503 lmm_system_free(network_maxmin_system);
504 network_maxmin_system = NULL;
507 static void surf_network_model_init_internal(void)
509 surf_network_model = surf_model_init();
511 surf_network_model->name = "network";
512 surf_network_model->action_unref = action_unref;
513 surf_network_model->action_cancel = action_cancel;
514 surf_network_model->action_recycle = action_recycle;
515 surf_network_model->get_remains = action_get_remains;
517 surf_network_model->model_private->resource_used = resource_used;
518 surf_network_model->model_private->share_resources = share_resources;
519 surf_network_model->model_private->update_actions_state =
520 update_actions_state;
521 surf_network_model->model_private->update_resource_state =
522 update_resource_state;
523 surf_network_model->model_private->finalize = finalize;
525 surf_network_model->suspend = action_suspend;
526 surf_network_model->resume = action_resume;
527 surf_network_model->is_suspended = action_is_suspended;
528 surf_cpu_model->set_max_duration = action_set_max_duration;
530 surf_network_model->extension.network.communicate = communicate;
531 surf_network_model->extension.network.get_link_bandwidth =
533 surf_network_model->extension.network.get_link_latency = get_link_latency;
534 surf_network_model->extension.network.link_shared = link_shared;
536 if (!network_maxmin_system)
537 network_maxmin_system = lmm_system_new();
539 routing_model_create(sizeof(link_CM02_t),
540 link_new(xbt_strdup("__loopback__"),
541 498000000, NULL, 0.000015, NULL,
542 SURF_RESOURCE_ON, NULL, SURF_LINK_FATPIPE,
546 /************************************************************************/
547 /* New model based on optimizations discussed during this thesis */
548 /************************************************************************/
549 void surf_network_model_init_LegrandVelho(const char *filename)
552 if (surf_network_model)
554 surf_network_model_init_internal();
555 define_callbacks(filename);
556 xbt_dynar_push(model_list, &surf_network_model);
557 network_solve = lmm_solve;
559 latency_factor = 10.4;
560 bandwidth_factor = 0.92;
561 weight_S_parameter = 8775;
563 update_model_description(surf_network_model_description,
564 "LV08", surf_network_model);
567 /***************************************************************************/
568 /* The nice TCP sharing model designed by Loris Marchal and Henri Casanova */
569 /***************************************************************************/
570 /* @TechReport{ rr-lip2002-40, */
571 /* author = {Henri Casanova and Loris Marchal}, */
572 /* institution = {LIP}, */
573 /* title = {A Network Model for Simulation of Grid Application}, */
574 /* number = {2002-40}, */
578 void surf_network_model_init_CM02(const char *filename)
581 if (surf_network_model)
583 surf_network_model_init_internal();
584 define_callbacks(filename);
585 xbt_dynar_push(model_list, &surf_network_model);
586 network_solve = lmm_solve;
588 update_model_description(surf_network_model_description,
589 "CM02", surf_network_model);
592 void surf_network_model_init_Reno(const char *filename)
594 if (surf_network_model)
596 surf_network_model_init_internal();
597 define_callbacks(filename);
599 xbt_dynar_push(model_list, &surf_network_model);
600 lmm_set_default_protocol_function(func_reno_f, func_reno_fp, func_reno_fpi);
601 network_solve = lagrange_solve;
603 latency_factor = 10.4;
604 bandwidth_factor = 0.92;
605 weight_S_parameter = 8775;
607 update_model_description(surf_network_model_description,
608 "Reno", surf_network_model);
612 void surf_network_model_init_Reno2(const char *filename)
614 if (surf_network_model)
616 surf_network_model_init_internal();
617 define_callbacks(filename);
619 xbt_dynar_push(model_list, &surf_network_model);
620 lmm_set_default_protocol_function(func_reno2_f, func_reno2_fp,
622 network_solve = lagrange_solve;
624 latency_factor = 10.4;
625 bandwidth_factor = 0.92;
626 weight_S_parameter = 8775;
628 update_model_description(surf_network_model_description,
629 "Reno2", surf_network_model);
632 void surf_network_model_init_Vegas(const char *filename)
634 if (surf_network_model)
636 surf_network_model_init_internal();
637 define_callbacks(filename);
639 xbt_dynar_push(model_list, &surf_network_model);
640 lmm_set_default_protocol_function(func_vegas_f, func_vegas_fp,
642 network_solve = lagrange_solve;
644 latency_factor = 10.4;
645 bandwidth_factor = 0.92;
646 weight_S_parameter = 8775;
648 update_model_description(surf_network_model_description,
649 "Vegas", surf_network_model);