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 */
25 double sg_tcp_gamma = 0.0;
29 static link_CM02_t link_new(char *name,
31 tmgr_trace_t bw_trace,
33 tmgr_trace_t lat_trace,
34 e_surf_resource_state_t
36 tmgr_trace_t state_trace,
37 e_surf_link_sharing_policy_t
38 policy, xbt_dict_t properties)
40 link_CM02_t nw_link = xbt_new0(s_link_CM02_t, 1);
41 xbt_assert1(!xbt_dict_get_or_null(surf_network_model->resource_set, name),
42 "Link '%s' declared several times in the platform file.", name);
44 nw_link->generic_resource.model = surf_network_model;
45 nw_link->generic_resource.name = name;
46 current_property_set = nw_link->generic_resource.properties = properties;
47 nw_link->bw_current = bw_initial;
50 tmgr_history_add_trace(history, bw_trace, 0.0, 0, nw_link);
51 nw_link->lat_current = lat_initial;
54 tmgr_history_add_trace(history, lat_trace, 0.0, 0, nw_link);
55 nw_link->state_current = state_initial;
57 nw_link->state_event =
58 tmgr_history_add_trace(history, state_trace, 0.0, 0, nw_link);
61 lmm_constraint_new(network_maxmin_system, nw_link,
62 bandwidth_factor * nw_link->bw_current);
64 if (policy == SURF_LINK_FATPIPE)
65 lmm_constraint_shared(nw_link->constraint);
67 xbt_dict_set(surf_network_model->resource_set, name, nw_link, surf_resource_free);
72 static void parse_link_init(void)
76 tmgr_trace_t bw_trace;
78 tmgr_trace_t lat_trace;
79 e_surf_resource_state_t state_initial_link = SURF_RESOURCE_ON;
80 e_surf_link_sharing_policy_t policy_initial_link = SURF_LINK_SHARED;
81 tmgr_trace_t state_trace;
83 name_link = xbt_strdup(A_surfxml_link_id);
84 surf_parse_get_double(&bw_initial, A_surfxml_link_bandwidth);
85 surf_parse_get_trace(&bw_trace, A_surfxml_link_bandwidth_file);
86 surf_parse_get_double(&lat_initial, A_surfxml_link_latency);
87 surf_parse_get_trace(&lat_trace, A_surfxml_link_latency_file);
89 xbt_assert0((A_surfxml_link_state == A_surfxml_link_state_ON)
90 || (A_surfxml_link_state ==
91 A_surfxml_link_state_OFF), "Invalid state");
92 if (A_surfxml_link_state == A_surfxml_link_state_ON)
93 state_initial_link = SURF_RESOURCE_ON;
94 else if (A_surfxml_link_state == A_surfxml_link_state_OFF)
95 state_initial_link = SURF_RESOURCE_OFF;
97 if (A_surfxml_link_sharing_policy == A_surfxml_link_sharing_policy_SHARED)
98 policy_initial_link = SURF_LINK_SHARED;
99 else if (A_surfxml_link_sharing_policy ==
100 A_surfxml_link_sharing_policy_FATPIPE)
101 policy_initial_link = SURF_LINK_FATPIPE;
103 surf_parse_get_trace(&state_trace, A_surfxml_link_state_file);
105 link_new(name_link, bw_initial, bw_trace,
106 lat_initial, lat_trace, state_initial_link, state_trace,
107 policy_initial_link, xbt_dict_new());
111 static void add_traces(void)
113 xbt_dict_cursor_t cursor = NULL;
114 char *trace_name, *elm;
116 static int called = 0;
121 /* connect all traces relative to network */
122 xbt_dict_foreach(trace_connect_list_link_avail, cursor, trace_name, elm) {
123 tmgr_trace_t trace = xbt_dict_get_or_null(traces_set_list, trace_name);
124 link_CM02_t link = xbt_dict_get_or_null(surf_network_model->resource_set, elm);
126 xbt_assert2(link, "Cannot connect trace %s to link %s: link undefined",
128 xbt_assert2(trace, "Cannot connect trace %s to link %s: trace undefined",
131 link->state_event = tmgr_history_add_trace(history, trace, 0.0, 0, link);
134 xbt_dict_foreach(trace_connect_list_bandwidth, cursor, trace_name, elm) {
135 tmgr_trace_t trace = xbt_dict_get_or_null(traces_set_list, trace_name);
136 link_CM02_t link = xbt_dict_get_or_null(surf_network_model->resource_set, elm);
138 xbt_assert2(link, "Cannot connect trace %s to link %s: link undefined",
140 xbt_assert2(trace, "Cannot connect trace %s to link %s: trace undefined",
143 link->bw_event = tmgr_history_add_trace(history, trace, 0.0, 0, link);
146 xbt_dict_foreach(trace_connect_list_latency, cursor, trace_name, elm) {
147 tmgr_trace_t trace = xbt_dict_get_or_null(traces_set_list, trace_name);
148 link_CM02_t link = xbt_dict_get_or_null(surf_network_model->resource_set, elm);
150 xbt_assert2(link, "Cannot connect trace %s to link %s: link undefined",
152 xbt_assert2(trace, "Cannot connect trace %s to link %s: trace undefined",
155 link->lat_event = tmgr_history_add_trace(history, trace, 0.0, 0, link);
159 static void define_callbacks(const char *file)
161 /* Figuring out the network links */
162 surfxml_add_callback(STag_surfxml_link_cb_list, &parse_link_init);
163 surfxml_add_callback(ETag_surfxml_platform_cb_list, &add_traces);
166 static int resource_used(void *resource_id)
168 return lmm_constraint_used(network_maxmin_system,
169 ((link_CM02_t) resource_id)->constraint);
172 static int action_unref(surf_action_t action)
175 if (!action->refcount) {
176 xbt_swag_remove(action, action->state_set);
177 if (((surf_action_network_CM02_t) action)->variable)
178 lmm_variable_free(network_maxmin_system,
179 ((surf_action_network_CM02_t) action)->variable);
186 static void action_cancel(surf_action_t action)
191 static void action_recycle(surf_action_t action)
196 static double share_resources(double now)
198 s_surf_action_network_CM02_t s_action;
199 surf_action_network_CM02_t action = NULL;
200 xbt_swag_t running_actions = surf_network_model->states.running_action_set;
203 min = generic_maxmin_share_resources(running_actions,
204 xbt_swag_offset(s_action,
206 network_maxmin_system, network_solve);
208 #define VARIABLE(action) (*((lmm_variable_t*)(((char *) (action)) + xbt_swag_offset(s_action, variable) )))
210 xbt_swag_foreach(action, running_actions) {
211 if (action->latency > 0) {
213 min = action->latency;
214 else if (action->latency < min)
215 min = action->latency;
222 static void update_actions_state(double now, double delta)
225 surf_action_network_CM02_t action = NULL;
226 surf_action_network_CM02_t next_action = NULL;
227 xbt_swag_t running_actions = surf_network_model->states.running_action_set;
229 xbt_swag_t failed_actions =
230 surf_network_model->states.failed_action_set;
233 xbt_swag_foreach_safe(action, next_action, running_actions) {
235 if (action->latency > 0) {
236 if (action->latency > deltap) {
237 double_update(&(action->latency), deltap);
240 double_update(&(deltap), action->latency);
241 action->latency = 0.0;
243 if ((action->latency == 0.0) && !(action->suspended))
244 lmm_update_variable_weight(network_maxmin_system, action->variable,
247 double_update(&(action->generic_action.remains),
248 lmm_variable_getvalue(action->variable) * deltap);
249 if (action->generic_action.max_duration != NO_MAX_DURATION)
250 double_update(&(action->generic_action.max_duration), delta);
252 if ((action->generic_action.remains <= 0) &&
253 (lmm_get_variable_weight(action->variable) > 0)) {
254 action->generic_action.finish = surf_get_clock();
255 surf_network_model->action_state_set((surf_action_t) action, SURF_ACTION_DONE);
256 } else if ((action->generic_action.max_duration != NO_MAX_DURATION) &&
257 (action->generic_action.max_duration <= 0)) {
258 action->generic_action.finish = surf_get_clock();
259 surf_network_model->action_state_set((surf_action_t) action, SURF_ACTION_DONE);
266 static void update_resource_state(void *id,
267 tmgr_trace_event_t event_type,
268 double value, double date)
270 link_CM02_t nw_link = id;
271 /* printf("[" "%lg" "] Asking to update network card \"%s\" with value " */
272 /* "%lg" " for event %p\n", surf_get_clock(), nw_link->name, */
273 /* value, event_type); */
275 if (event_type == nw_link->bw_event) {
277 weight_S_parameter / value - weight_S_parameter / nw_link->bw_current;
278 lmm_variable_t var = NULL;
279 lmm_element_t elem = NULL;
280 surf_action_network_CM02_t action = NULL;
282 nw_link->bw_current = value;
283 lmm_update_constraint_bound(network_maxmin_system, nw_link->constraint,
284 bandwidth_factor * nw_link->bw_current);
285 if (weight_S_parameter > 0) {
286 while ((var = lmm_get_var_from_cnst
287 (network_maxmin_system, nw_link->constraint, &elem))) {
288 action = lmm_variable_id(var);
289 action->weight += delta;
290 if (!(action->suspended))
291 lmm_update_variable_weight(network_maxmin_system, action->variable,
295 } else if (event_type == nw_link->lat_event) {
296 double delta = value - nw_link->lat_current;
297 lmm_variable_t var = NULL;
298 lmm_element_t elem = NULL;
299 surf_action_network_CM02_t action = NULL;
301 nw_link->lat_current = value;
302 while ((var = lmm_get_var_from_cnst
303 (network_maxmin_system, nw_link->constraint, &elem))) {
304 action = lmm_variable_id(var);
305 action->lat_current += delta;
306 action->weight += delta;
307 if (action->rate < 0)
308 lmm_update_variable_bound(network_maxmin_system, action->variable,
309 sg_tcp_gamma / (2.0 * action->lat_current));
311 lmm_update_variable_bound(network_maxmin_system, action->variable,
313 sg_tcp_gamma / (2.0 *
314 action->lat_current)));
315 if (!(action->suspended))
316 lmm_update_variable_weight(network_maxmin_system, action->variable,
320 } else if (event_type == nw_link->state_event) {
322 nw_link->state_current = SURF_RESOURCE_ON;
324 lmm_constraint_t cnst = nw_link->constraint;
325 lmm_variable_t var = NULL;
326 lmm_element_t elem = NULL;
328 nw_link->state_current = SURF_RESOURCE_OFF;
329 while ((var = lmm_get_var_from_cnst
330 (network_maxmin_system, cnst, &elem))) {
331 surf_action_t action = lmm_variable_id(var);
333 if (surf_action_state_get(action) == SURF_ACTION_RUNNING ||
334 surf_action_state_get(action) == SURF_ACTION_READY) {
335 action->finish = date;
336 surf_network_model->action_state_set(action, SURF_ACTION_FAILED);
341 CRITICAL0("Unknown event ! \n");
348 static surf_action_t communicate(const char *src_name, const char *dst_name,int src, int dst, double size,
351 surf_action_network_CM02_t action = NULL;
352 /* LARGE PLATFORMS HACK:
353 Add a link_CM02_t *link and a int link_nb to network_card_CM02_t. It will represent local links for this node
354 Use the cluster_id for ->id */
355 xbt_dynar_t route = used_routing->get_route(src, dst);
356 /* LARGE PLATFORMS HACK:
357 total_route_size = route_size + src->link_nb + dst->nb */
360 XBT_IN4("(%s,%s,%g,%g)", src_name, dst_name, size, rate);
361 /* LARGE PLATFORMS HACK:
362 assert on total_route_size */
363 xbt_assert2(xbt_dynar_length(route),
364 "You're trying to send data from %s to %s but there is no connection between these two hosts.",
369 xbt_dynar_foreach(route,i,link) {
370 if (link->state_current == SURF_RESOURCE_OFF) {
375 action = surf_action_new(sizeof(s_surf_action_network_CM02_t),size,surf_network_model,failed);
377 xbt_swag_insert(action, action->generic_action.state_set);
380 action->latency = 0.0;
381 action->weight = 0.0;
382 xbt_dynar_foreach(route,i,link) {
383 action->latency += link->lat_current;
385 link->lat_current + weight_S_parameter / link->bw_current;
387 /* LARGE PLATFORMS HACK:
388 Add src->link and dst->link latencies */
389 action->lat_current = action->latency;
390 action->latency *= latency_factor;
392 /* LARGE PLATFORMS HACK:
393 lmm_variable_new(..., total_route_size) */
394 if (action->latency > 0)
396 lmm_variable_new(network_maxmin_system, action, 0.0, -1.0, xbt_dynar_length(route));
399 lmm_variable_new(network_maxmin_system, action, 1.0, -1.0, xbt_dynar_length(route));
401 if (action->rate < 0) {
402 if (action->lat_current > 0)
403 lmm_update_variable_bound(network_maxmin_system, action->variable,
404 sg_tcp_gamma / (2.0 * action->lat_current));
406 lmm_update_variable_bound(network_maxmin_system, action->variable,
409 if (action->lat_current > 0)
410 lmm_update_variable_bound(network_maxmin_system, action->variable,
412 sg_tcp_gamma / (2.0 *
413 action->lat_current)));
415 lmm_update_variable_bound(network_maxmin_system, action->variable,
419 xbt_dynar_foreach(route,i,link) {
420 lmm_expand(network_maxmin_system, link->constraint,
421 action->variable, 1.0);
423 /* LARGE PLATFORMS HACK:
424 expand also with src->link and dst->link */
428 return (surf_action_t) action;
431 static double get_link_bandwidth(const void *link)
433 return ((link_CM02_t) link)->bw_current;
436 static double get_link_latency(const void *link)
438 return ((link_CM02_t) link)->lat_current;
441 static int link_shared(const void *link)
443 return lmm_constraint_is_shared(((link_CM02_t) link)->constraint);
446 static void action_suspend(surf_action_t action)
448 ((surf_action_network_CM02_t) action)->suspended = 1;
449 lmm_update_variable_weight(network_maxmin_system,
450 ((surf_action_network_CM02_t) action)->variable,
454 static void action_resume(surf_action_t action)
456 if (((surf_action_network_CM02_t) action)->suspended) {
457 lmm_update_variable_weight(network_maxmin_system,
458 ((surf_action_network_CM02_t)
460 ((surf_action_network_CM02_t) action)->weight);
461 ((surf_action_network_CM02_t) action)->suspended = 0;
465 static int action_is_suspended(surf_action_t action)
467 return ((surf_action_network_CM02_t) action)->suspended;
470 static void action_set_max_duration(surf_action_t action, double duration)
472 action->max_duration = duration;
475 static void finalize(void)
477 surf_model_exit(surf_network_model);
478 surf_network_model = NULL;
480 used_routing->finalize();
482 lmm_system_free(network_maxmin_system);
483 network_maxmin_system = NULL;
486 static void surf_network_model_init_internal(void)
488 surf_network_model = surf_model_init();
490 surf_network_model->name = "network";
491 surf_network_model->action_unref = action_unref;
492 surf_network_model->action_cancel = action_cancel;
493 surf_network_model->action_recycle = action_recycle;
495 surf_network_model->model_private->resource_used = resource_used;
496 surf_network_model->model_private->share_resources = share_resources;
497 surf_network_model->model_private->update_actions_state =
498 update_actions_state;
499 surf_network_model->model_private->update_resource_state =
500 update_resource_state;
501 surf_network_model->model_private->finalize = finalize;
503 surf_network_model->suspend = action_suspend;
504 surf_network_model->resume = action_resume;
505 surf_network_model->is_suspended = action_is_suspended;
506 surf_cpu_model->set_max_duration = action_set_max_duration;
508 surf_network_model->extension.network.communicate = communicate;
509 surf_network_model->extension.network.get_link_bandwidth =
511 surf_network_model->extension.network.get_link_latency = get_link_latency;
512 surf_network_model->extension.network.link_shared = link_shared;
514 if (!network_maxmin_system)
515 network_maxmin_system = lmm_system_new();
517 routing_model_create(sizeof(link_CM02_t),
518 link_new(xbt_strdup("__loopback__"),
519 498000000, NULL, 0.000015, NULL,
520 SURF_RESOURCE_ON, NULL, SURF_LINK_FATPIPE, NULL));
523 /************************************************************************/
524 /* New model based on optimizations discussed during this thesis */
525 /************************************************************************/
526 void surf_network_model_init_LegrandVelho(const char *filename)
529 if (surf_network_model)
531 surf_network_model_init_internal();
532 define_callbacks(filename);
533 xbt_dynar_push(model_list, &surf_network_model);
534 network_solve = lmm_solve;
536 latency_factor = 10.4;
537 bandwidth_factor = 0.92;
538 weight_S_parameter = 8775;
540 update_model_description(surf_network_model_description,
541 "LegrandVelho", surf_network_model);
544 /***************************************************************************/
545 /* The nice TCP sharing model designed by Loris Marchal and Henri Casanova */
546 /***************************************************************************/
547 /* @TechReport{ rr-lip2002-40, */
548 /* author = {Henri Casanova and Loris Marchal}, */
549 /* institution = {LIP}, */
550 /* title = {A Network Model for Simulation of Grid Application}, */
551 /* number = {2002-40}, */
555 void surf_network_model_init_CM02(const char *filename)
558 if (surf_network_model)
560 surf_network_model_init_internal();
561 define_callbacks(filename);
562 xbt_dynar_push(model_list, &surf_network_model);
563 network_solve = lmm_solve;
565 update_model_description(surf_network_model_description,
566 "CM02", surf_network_model);
569 void surf_network_model_init_Reno(const char *filename)
571 if (surf_network_model)
573 surf_network_model_init_internal();
574 define_callbacks(filename);
576 xbt_dynar_push(model_list, &surf_network_model);
577 lmm_set_default_protocol_function(func_reno_f, func_reno_fp, func_reno_fpi);
578 network_solve = lagrange_solve;
580 latency_factor = 10.4;
581 bandwidth_factor = 0.92;
582 weight_S_parameter = 8775;
584 update_model_description(surf_network_model_description,
585 "Reno", surf_network_model);
589 void surf_network_model_init_Reno2(const char *filename)
591 if (surf_network_model)
593 surf_network_model_init_internal();
594 define_callbacks(filename);
596 xbt_dynar_push(model_list, &surf_network_model);
597 lmm_set_default_protocol_function(func_reno2_f, func_reno2_fp,
599 network_solve = lagrange_solve;
601 latency_factor = 10.4;
602 bandwidth_factor = 0.92;
603 weight_S_parameter = 8775;
605 update_model_description(surf_network_model_description,
606 "Reno2", surf_network_model);
609 void surf_network_model_init_Vegas(const char *filename)
611 if (surf_network_model)
613 surf_network_model_init_internal();
614 define_callbacks(filename);
616 xbt_dynar_push(model_list, &surf_network_model);
617 lmm_set_default_protocol_function(func_vegas_f, func_vegas_fp,
619 network_solve = lagrange_solve;
621 latency_factor = 10.4;
622 bandwidth_factor = 0.92;
623 weight_S_parameter = 8775;
625 update_model_description(surf_network_model_description,
626 "Vegas", surf_network_model);
630 void surf_network_model_init_SDP(const char *filename)
632 if (surf_network_model)
634 surf_network_model_init_internal();
635 define_callbacks(filename);
637 xbt_dynar_push(model_list, &surf_network_model);
638 network_solve = sdp_solve;
640 update_model_description(surf_network_model_description,
641 "SDP", surf_network_model);