3 * Network with improved management of tasks, IM (Improved Management).
4 * Uses a heap to store actions so that the share_resources is faster.
5 * This model automatically sets the selective update flag to 1 and is
6 * highly dependent on the maxmin lmm module.
9 /* Copyright (c) 2009, 2010, 2011. The SimGrid Team.
10 * All rights reserved. */
12 /* This program is free software; you can redistribute it and/or modify it
13 * under the terms of the license (GNU LGPL) which comes with this package. */
15 #include "network_private.h"
19 #include "surf_private.h"
21 #include "maxmin_private.h"
22 #include "surf/surfxml_parse_values.h"
23 #include "surf/surf_resource.h"
24 #include "surf/surf_resource_lmm.h"
26 #undef GENERIC_LMM_ACTION
28 #define GENERIC_LMM_ACTION(action) (action)->generic_lmm_action
29 #define GENERIC_ACTION(action) GENERIC_LMM_ACTION(action).generic_action
32 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(surf_network, surf,
33 "Logging specific to the SURF network module");
35 surf_model_t surf_network_model = NULL;
36 static void (*network_solve) (lmm_system_t) = NULL;
38 xbt_dynar_t smpi_bw_factor = NULL;
39 xbt_dynar_t smpi_lat_factor = NULL;
41 typedef struct s_smpi_factor *smpi_factor_t;
42 typedef struct s_smpi_factor {
48 double sg_sender_gap = 0.0;
49 double sg_latency_factor = 1.0; /* default value; can be set by model or from command line */
50 double sg_bandwidth_factor = 1.0; /* default value; can be set by model or from command line */
51 double sg_weight_S_parameter = 0.0; /* default value; can be set by model or from command line */
53 double sg_tcp_gamma = 0.0;
54 int sg_network_crosstraffic = 0;
56 xbt_dict_t gap_lookup = NULL;
58 static void net_update_action_remaining_lazy(surf_action_network_CM02_t action, double now);
60 /******************************************************************************/
61 /* Factors callbacks */
62 /******************************************************************************/
63 static double constant_latency_factor(double size)
65 return sg_latency_factor;
68 static double constant_bandwidth_factor(double size)
70 return sg_bandwidth_factor;
73 static double constant_bandwidth_constraint(double rate, double bound,
79 /**********************/
81 /**********************/
82 static xbt_dynar_t parse_factor(const char *smpi_coef_string)
85 unsigned int iter = 0;
87 xbt_dynar_t smpi_factor, radical_elements, radical_elements2 = NULL;
89 smpi_factor = xbt_dynar_new(sizeof(s_smpi_factor_t), NULL);
90 radical_elements = xbt_str_split(smpi_coef_string, ";");
91 xbt_dynar_foreach(radical_elements, iter, value) {
93 radical_elements2 = xbt_str_split(value, ":");
94 if (xbt_dynar_length(radical_elements2) != 2)
95 xbt_die("Malformed radical for smpi factor!");
96 fact.factor = atol(xbt_dynar_get_as(radical_elements2, 0, char *));
97 fact.value = atof(xbt_dynar_get_as(radical_elements2, 1, char *));
98 xbt_dynar_push_as(smpi_factor, s_smpi_factor_t, fact);
99 XBT_DEBUG("smpi_factor:\t%ld : %f", fact.factor, fact.value);
100 xbt_dynar_free(&radical_elements2);
102 xbt_dynar_free(&radical_elements);
106 static double smpi_bandwidth_factor(double size)
110 parse_factor(xbt_cfg_get_string(_surf_cfg_set, "smpi/bw_factor"));
112 unsigned int iter = 0;
113 s_smpi_factor_t fact;
114 xbt_dynar_foreach(smpi_bw_factor, iter, fact) {
115 if (size >= fact.factor) {
116 XBT_DEBUG("%lf >= %ld return %f", size, fact.factor, fact.value);
124 static double smpi_latency_factor(double size)
126 if (!smpi_lat_factor)
128 parse_factor(xbt_cfg_get_string(_surf_cfg_set, "smpi/lat_factor"));
130 unsigned int iter = 0;
131 s_smpi_factor_t fact;
132 xbt_dynar_foreach(smpi_lat_factor, iter, fact) {
133 if (size >= fact.factor) {
134 XBT_DEBUG("%lf >= %ld return %f", size, fact.factor, fact.value);
142 /**--------- <copy/paste C code snippet in surf/network.c> -----------*/
144 static double smpi_bandwidth_constraint(double rate, double bound,
147 return rate < 0 ? bound : min(bound, rate * smpi_bandwidth_factor(size));
150 static double (*latency_factor_callback) (double) =
151 &constant_latency_factor;
152 static double (*bandwidth_factor_callback) (double) =
153 &constant_bandwidth_factor;
154 static double (*bandwidth_constraint_callback) (double, double, double) =
155 &constant_bandwidth_constraint;
157 static void (*gap_append) (double, const link_CM02_t,
158 surf_action_network_CM02_t) = NULL;
159 static void (*gap_remove) (surf_action_network_CM02_t) = NULL;
161 static void *net_create_resource(const char *name,
163 tmgr_trace_t bw_trace,
165 tmgr_trace_t lat_trace,
166 e_surf_resource_state_t
168 tmgr_trace_t state_trace,
169 e_surf_link_sharing_policy_t
170 policy, xbt_dict_t properties)
172 link_CM02_t nw_link = (link_CM02_t)
173 surf_resource_lmm_new(sizeof(s_link_CM02_t),
174 surf_network_model, name, properties,
175 surf_network_model->model_private->maxmin_system,
176 sg_bandwidth_factor * bw_initial,
178 state_initial, state_trace,
179 bw_initial, bw_trace);
181 xbt_assert(!xbt_lib_get_or_null(link_lib, name, SURF_LINK_LEVEL),
182 "Link '%s' declared several times in the platform file.",
185 nw_link->lat_current = lat_initial;
188 tmgr_history_add_trace(history, lat_trace, 0.0, 0, nw_link);
190 if (policy == SURF_LINK_FATPIPE)
191 lmm_constraint_shared(nw_link->lmm_resource.constraint);
193 xbt_lib_set(link_lib, name, SURF_LINK_LEVEL, nw_link);
194 XBT_DEBUG("Create link '%s'",name);
199 static void net_parse_link_init(sg_platf_link_cbarg_t link)
201 if (link->policy == SURF_LINK_FULLDUPLEX) {
203 link_id = bprintf("%s_UP", link->id);
204 net_create_resource(link_id,
206 link->bandwidth_trace,
210 link->state_trace, link->policy, link->properties);
212 link_id = bprintf("%s_DOWN", link->id);
213 net_create_resource(link_id,
215 link->bandwidth_trace,
219 link->state_trace, link->policy, link->properties);
222 net_create_resource(link->id,
224 link->bandwidth_trace,
228 link->state_trace, link->policy, link->properties);
232 static void net_add_traces(void)
234 xbt_dict_cursor_t cursor = NULL;
235 char *trace_name, *elm;
237 static int called = 0;
242 /* connect all traces relative to network */
243 xbt_dict_foreach(trace_connect_list_link_avail, cursor, trace_name, elm) {
244 tmgr_trace_t trace = xbt_dict_get_or_null(traces_set_list, trace_name);
245 link_CM02_t link = xbt_lib_get_or_null(link_lib, elm, SURF_LINK_LEVEL);
247 xbt_assert(link, "Cannot connect trace %s to link %s: link undefined",
250 "Cannot connect trace %s to link %s: trace undefined",
253 link->lmm_resource.state_event =
254 tmgr_history_add_trace(history, trace, 0.0, 0, link);
257 xbt_dict_foreach(trace_connect_list_bandwidth, cursor, trace_name, elm) {
258 tmgr_trace_t trace = xbt_dict_get_or_null(traces_set_list, trace_name);
259 link_CM02_t link = xbt_lib_get_or_null(link_lib, elm, SURF_LINK_LEVEL);
261 xbt_assert(link, "Cannot connect trace %s to link %s: link undefined",
264 "Cannot connect trace %s to link %s: trace undefined",
267 link->lmm_resource.power.event =
268 tmgr_history_add_trace(history, trace, 0.0, 0, link);
271 xbt_dict_foreach(trace_connect_list_latency, cursor, trace_name, elm) {
272 tmgr_trace_t trace = xbt_dict_get_or_null(traces_set_list, trace_name);
273 link_CM02_t link = xbt_lib_get_or_null(link_lib, elm, SURF_LINK_LEVEL);
275 xbt_assert(link, "Cannot connect trace %s to link %s: link undefined",
278 "Cannot connect trace %s to link %s: trace undefined",
281 link->lat_event = tmgr_history_add_trace(history, trace, 0.0, 0, link);
285 static void net_define_callbacks(void)
287 /* Figuring out the network links */
288 sg_platf_link_add_cb(net_parse_link_init);
289 sg_platf_postparse_add_cb(net_add_traces);
292 static int net_resource_used(void *resource_id)
294 return lmm_constraint_used(surf_network_model->model_private->maxmin_system, ((surf_resource_lmm_t)
299 void net_action_recycle(surf_action_t action)
304 #ifdef HAVE_LATENCY_BOUND_TRACKING
305 int net_get_link_latency_limited(surf_action_t action)
307 return action->latency_limited;
311 double net_action_get_remains(surf_action_t action)
313 XBT_IN("(%p)", action);
314 /* update remains before return it */
315 if (surf_network_model->model_private->update_mechanism == UM_LAZY) /* update remains before return it */
316 net_update_action_remaining_lazy((surf_action_network_CM02_t)action,
319 return action->remains;
322 static void net_update_action_remaining_lazy(surf_action_network_CM02_t action, double now)
326 if (GENERIC_LMM_ACTION(action).suspended != 0)
329 delta = now - GENERIC_LMM_ACTION(action).last_update;
331 double_update(&(((surf_action_t)action)->remains),
332 GENERIC_LMM_ACTION(action).last_value * delta);
334 if (((surf_action_t)action)->max_duration != NO_MAX_DURATION)
335 double_update(&(((surf_action_t)action)->max_duration), delta);
337 if ((((surf_action_t)action)->remains <= 0) &&
338 (lmm_get_variable_weight(GENERIC_LMM_ACTION(action).variable) > 0)) {
339 ((surf_action_t)action)->finish = surf_get_clock();
340 surf_network_model->action_state_set((surf_action_t) action,
343 surf_action_lmm_heap_remove(surf_network_model->model_private->action_heap,(surf_action_lmm_t)action);
344 } else if (((((surf_action_t)action)->max_duration != NO_MAX_DURATION)
345 && (((surf_action_t)action)->max_duration <= 0))) {
346 ((surf_action_t)action)->finish = surf_get_clock();
347 surf_network_model->action_state_set((surf_action_t) action,
349 surf_action_lmm_heap_remove(surf_network_model->model_private->action_heap,(surf_action_lmm_t)action);
352 GENERIC_LMM_ACTION(action).last_update = now;
353 GENERIC_LMM_ACTION(action).last_value = lmm_variable_getvalue(GENERIC_LMM_ACTION(action).variable);
356 static double net_share_resources_full(double now)
358 s_surf_action_lmm_t s_action;
359 surf_action_network_CM02_t action = NULL;
360 xbt_swag_t running_actions =
361 surf_network_model->states.running_action_set;
364 min = generic_maxmin_share_resources(running_actions,
365 xbt_swag_offset(s_action,
367 surf_network_model->model_private->maxmin_system,
370 #define VARIABLE(action) (*((lmm_variable_t*)(((char *) (action)) + xbt_swag_offset(s_action, variable) )))
372 xbt_swag_foreach(action, running_actions) {
373 #ifdef HAVE_LATENCY_BOUND_TRACKING
374 if (lmm_is_variable_limited_by_latency(GENERIC_LMM_ACTION(action).variable)) {
375 action->latency_limited = 1;
377 action->latency_limited = 0;
380 if (action->latency > 0) {
381 min = (min < 0) ? action->latency : min(min, action->latency);
385 XBT_DEBUG("Min of share resources %f", min);
390 static double net_share_resources_lazy(double now)
392 surf_action_network_CM02_t action = NULL;
397 ("Before share resources, the size of modified actions set is %d",
398 xbt_swag_size(surf_network_model->model_private->modified_set));
400 lmm_solve(surf_network_model->model_private->maxmin_system);
403 ("After share resources, The size of modified actions set is %d",
404 xbt_swag_size(surf_network_model->model_private->modified_set));
406 while((action = xbt_swag_extract(surf_network_model->model_private->modified_set))) {
407 int max_dur_flag = 0;
409 if (GENERIC_ACTION(action).state_set !=
410 surf_network_model->states.running_action_set)
413 /* bogus priority, skip it */
414 if (GENERIC_ACTION(action).priority <= 0)
417 net_update_action_remaining_lazy(action,now);
420 value = lmm_variable_getvalue(GENERIC_LMM_ACTION(action).variable);
422 if (GENERIC_ACTION(action).remains > 0) {
423 value = GENERIC_ACTION(action).remains / value;
431 if ((GENERIC_ACTION(action).max_duration != NO_MAX_DURATION)
433 || GENERIC_ACTION(action).start +
434 GENERIC_ACTION(action).max_duration < min)) {
435 min = GENERIC_ACTION(action).start +
436 GENERIC_ACTION(action).max_duration;
440 XBT_DEBUG("Action(%p) Start %lf Finish %lf Max_duration %lf", action,
441 GENERIC_ACTION(action).start, now + value,
442 GENERIC_ACTION(action).max_duration);
445 surf_action_lmm_heap_remove(surf_network_model->model_private->action_heap,(surf_action_lmm_t)action);
446 surf_action_lmm_heap_insert(surf_network_model->model_private->action_heap,(surf_action_lmm_t)action, min, max_dur_flag ? MAX_DURATION : NORMAL);
447 XBT_DEBUG("Insert at heap action(%p) min %lf now %lf", action, min,
449 } else DIE_IMPOSSIBLE;
452 //hereafter must have already the min value for this resource model
453 if (xbt_heap_size(surf_network_model->model_private->action_heap) > 0)
454 min = xbt_heap_maxkey(surf_network_model->model_private->action_heap) - now;
458 XBT_DEBUG("The minimum with the HEAP %lf", min);
463 static void net_update_actions_state_full(double now, double delta)
466 surf_action_network_CM02_t action = NULL;
467 surf_action_network_CM02_t next_action = NULL;
468 xbt_swag_t running_actions =
469 surf_network_model->states.running_action_set;
471 xbt_swag_t failed_actions =
472 surf_network_model->states.failed_action_set;
475 xbt_swag_foreach_safe(action, next_action, running_actions) {
477 if (action->latency > 0) {
478 if (action->latency > deltap) {
479 double_update(&(action->latency), deltap);
482 double_update(&(deltap), action->latency);
483 action->latency = 0.0;
485 if ((action->latency == 0.0) && !(GENERIC_LMM_ACTION(action).suspended))
486 lmm_update_variable_weight(surf_network_model->model_private->maxmin_system, GENERIC_LMM_ACTION(action).variable,
490 if (TRACE_is_enabled()) {
491 int n = lmm_get_number_of_cnst_from_var(surf_network_model->model_private->maxmin_system, GENERIC_LMM_ACTION(action).variable);
493 for (i = 0; i < n; i++){
494 lmm_constraint_t constraint = lmm_get_cnst_from_var(surf_network_model->model_private->maxmin_system,
495 GENERIC_LMM_ACTION(action).variable,
497 link_CM02_t link = lmm_constraint_id(constraint);
498 TRACE_surf_link_set_utilization(link->lmm_resource.generic_resource.name,
499 ((surf_action_t)action)->category,
500 (lmm_variable_getvalue(GENERIC_LMM_ACTION(action).variable)*
501 lmm_get_cnst_weight_from_var(surf_network_model->model_private->maxmin_system,
502 GENERIC_LMM_ACTION(action).variable,
509 if (!lmm_get_number_of_cnst_from_var
510 (surf_network_model->model_private->maxmin_system, GENERIC_LMM_ACTION(action).variable)) {
511 /* There is actually no link used, hence an infinite bandwidth.
512 * This happens often when using models like vivaldi.
513 * In such case, just make sure that the action completes immediately.
515 double_update(&(GENERIC_ACTION(action).remains),
516 GENERIC_ACTION(action).remains);
518 double_update(&(GENERIC_ACTION(action).remains),
519 lmm_variable_getvalue(GENERIC_LMM_ACTION(action).variable) * deltap);
520 if (((surf_action_t)action)->max_duration != NO_MAX_DURATION)
521 double_update(&(((surf_action_t)action)->max_duration), delta);
523 if ((GENERIC_ACTION(action).remains <= 0) &&
524 (lmm_get_variable_weight(GENERIC_LMM_ACTION(action).variable) > 0)) {
525 ((surf_action_t)action)->finish = surf_get_clock();
526 surf_network_model->action_state_set((surf_action_t) action,
531 } else if ((((surf_action_t)action)->max_duration != NO_MAX_DURATION)
532 && (((surf_action_t)action)->max_duration <= 0)) {
533 ((surf_action_t)action)->finish = surf_get_clock();
534 surf_network_model->action_state_set((surf_action_t) action,
544 static void net_update_actions_state_lazy(double now, double delta)
546 surf_action_network_CM02_t action = NULL;
548 while ((xbt_heap_size(surf_network_model->model_private->action_heap) > 0)
549 && (double_equals(xbt_heap_maxkey(surf_network_model->model_private->action_heap), now))) {
550 action = xbt_heap_pop(surf_network_model->model_private->action_heap);
551 XBT_DEBUG("Action %p: finish", action);
552 GENERIC_ACTION(action).finish = surf_get_clock();
554 if (TRACE_is_enabled()) {
555 int n = lmm_get_number_of_cnst_from_var(surf_network_model->model_private->maxmin_system, GENERIC_LMM_ACTION(action).variable);
557 for (i = 0; i < n; i++){
558 lmm_constraint_t constraint = lmm_get_cnst_from_var(surf_network_model->model_private->maxmin_system,
559 GENERIC_LMM_ACTION(action).variable,
561 link_CM02_t link = lmm_constraint_id(constraint);
562 TRACE_surf_link_set_utilization(link->lmm_resource.generic_resource.name,
563 ((surf_action_t)action)->category,
564 (lmm_variable_getvalue(GENERIC_LMM_ACTION(action).variable)*
565 lmm_get_cnst_weight_from_var(surf_network_model->model_private->maxmin_system,
566 GENERIC_LMM_ACTION(action).variable,
568 GENERIC_LMM_ACTION(action).last_update,
569 now - GENERIC_LMM_ACTION(action).last_update);
574 // if I am wearing a latency hat
575 if (GENERIC_LMM_ACTION(action).hat == LATENCY) {
576 lmm_update_variable_weight(surf_network_model->model_private->maxmin_system, GENERIC_LMM_ACTION(action).variable,
578 surf_action_lmm_heap_remove(surf_network_model->model_private->action_heap,(surf_action_lmm_t)action);
579 GENERIC_LMM_ACTION(action).last_update = surf_get_clock();
581 // if I am wearing a max_duration or normal hat
582 } else if (GENERIC_LMM_ACTION(action).hat == MAX_DURATION ||
583 GENERIC_LMM_ACTION(action).hat == NORMAL) {
584 // no need to communicate anymore
585 // assume that flows that reached max_duration have remaining of 0
586 GENERIC_ACTION(action).remains = 0;
587 ((surf_action_t)action)->finish = surf_get_clock();
588 surf_network_model->action_state_set((surf_action_t) action,
590 surf_action_lmm_heap_remove(surf_network_model->model_private->action_heap,(surf_action_lmm_t)action);
596 static void net_update_resource_state(void *id,
597 tmgr_trace_event_t event_type,
598 double value, double date)
600 link_CM02_t nw_link = id;
601 /* printf("[" "%lg" "] Asking to update network card \"%s\" with value " */
602 /* "%lg" " for event %p\n", surf_get_clock(), nw_link->name, */
603 /* value, event_type); */
605 if (event_type == nw_link->lmm_resource.power.event) {
607 sg_weight_S_parameter / value - sg_weight_S_parameter /
608 (nw_link->lmm_resource.power.peak *
609 nw_link->lmm_resource.power.scale);
610 lmm_variable_t var = NULL;
611 lmm_element_t elem = NULL;
612 surf_action_network_CM02_t action = NULL;
614 nw_link->lmm_resource.power.peak = value;
615 lmm_update_constraint_bound(surf_network_model->model_private->maxmin_system,
616 nw_link->lmm_resource.constraint,
617 sg_bandwidth_factor *
618 (nw_link->lmm_resource.power.peak *
619 nw_link->lmm_resource.power.scale));
621 TRACE_surf_link_set_bandwidth(date,
623 *) (((nw_link->lmm_resource).
624 generic_resource).name),
625 sg_bandwidth_factor *
626 (nw_link->lmm_resource.power.peak *
627 nw_link->lmm_resource.power.scale));
629 if (sg_weight_S_parameter > 0) {
630 while ((var = lmm_get_var_from_cnst
631 (surf_network_model->model_private->maxmin_system, nw_link->lmm_resource.constraint,
633 action = lmm_variable_id(var);
634 action->weight += delta;
635 if (!(GENERIC_LMM_ACTION(action).suspended))
636 lmm_update_variable_weight(surf_network_model->model_private->maxmin_system,
637 GENERIC_LMM_ACTION(action).variable, action->weight);
640 if (tmgr_trace_event_free(event_type))
641 nw_link->lmm_resource.power.event = NULL;
642 } else if (event_type == nw_link->lat_event) {
643 double delta = value - nw_link->lat_current;
644 lmm_variable_t var = NULL;
645 lmm_element_t elem = NULL;
646 surf_action_network_CM02_t action = NULL;
648 nw_link->lat_current = value;
649 while ((var = lmm_get_var_from_cnst
650 (surf_network_model->model_private->maxmin_system, nw_link->lmm_resource.constraint,
652 action = lmm_variable_id(var);
653 action->lat_current += delta;
654 action->weight += delta;
655 if (action->rate < 0)
656 lmm_update_variable_bound(surf_network_model->model_private->maxmin_system, GENERIC_LMM_ACTION(action).variable,
657 sg_tcp_gamma / (2.0 *
658 action->lat_current));
660 lmm_update_variable_bound(surf_network_model->model_private->maxmin_system, GENERIC_LMM_ACTION(action).variable,
662 sg_tcp_gamma / (2.0 *
666 if (action->rate < sg_tcp_gamma / (2.0 * action->lat_current)) {
667 XBT_INFO("Flow is limited BYBANDWIDTH");
669 XBT_INFO("Flow is limited BYLATENCY, latency of flow is %f",
670 action->lat_current);
673 if (!(GENERIC_LMM_ACTION(action).suspended))
674 lmm_update_variable_weight(surf_network_model->model_private->maxmin_system, GENERIC_LMM_ACTION(action).variable,
678 if (tmgr_trace_event_free(event_type))
679 nw_link->lat_event = NULL;
680 } else if (event_type == nw_link->lmm_resource.state_event) {
682 nw_link->lmm_resource.state_current = SURF_RESOURCE_ON;
684 lmm_constraint_t cnst = nw_link->lmm_resource.constraint;
685 lmm_variable_t var = NULL;
686 lmm_element_t elem = NULL;
688 nw_link->lmm_resource.state_current = SURF_RESOURCE_OFF;
689 while ((var = lmm_get_var_from_cnst
690 (surf_network_model->model_private->maxmin_system, cnst, &elem))) {
691 surf_action_t action = lmm_variable_id(var);
693 if (surf_action_state_get(action) == SURF_ACTION_RUNNING ||
694 surf_action_state_get(action) == SURF_ACTION_READY) {
695 action->finish = date;
696 surf_network_model->action_state_set(action, SURF_ACTION_FAILED);
700 if (tmgr_trace_event_free(event_type))
701 nw_link->lmm_resource.state_event = NULL;
703 XBT_CRITICAL("Unknown event ! \n");
708 ("There were a resource state event, need to update actions related to the constraint (%p)",
709 nw_link->lmm_resource.constraint);
714 static surf_action_t net_communicate(sg_routing_edge_t src,
715 sg_routing_edge_t dst,
716 double size, double rate)
721 surf_action_network_CM02_t action = NULL;
722 double bandwidth_bound;
723 double latency = 0.0;
724 xbt_dynar_t back_route = NULL;
725 int constraints_per_variable = 0;
727 xbt_dynar_t route = xbt_dynar_new(sizeof(sg_routing_link_t), NULL);
729 XBT_IN("(%s,%s,%g,%g)", src->name, dst->name, size, rate);
731 routing_get_route_and_latency(src, dst, &route, &latency);
732 xbt_assert(!xbt_dynar_is_empty(route) || latency,
733 "You're trying to send data from %s to %s but there is no connection at all between these two hosts.",
734 src->name, dst->name);
736 xbt_dynar_foreach(route, i, link) {
737 if (link->lmm_resource.state_current == SURF_RESOURCE_OFF) {
742 if (sg_network_crosstraffic == 1) {
743 routing_get_route_and_latency(dst, src, &back_route, NULL);
744 xbt_dynar_foreach(back_route, i, link) {
745 if (link->lmm_resource.state_current == SURF_RESOURCE_OFF) {
753 surf_action_new(sizeof(s_surf_action_network_CM02_t), size,
754 surf_network_model, failed);
755 #ifdef HAVE_LATENCY_BOUND_TRACKING
756 action->latency_limited = 0;
758 action->weight = action->latency = latency;
760 xbt_swag_insert(action, ((surf_action_t)action)->state_set);
762 if (surf_network_model->model_private->update_mechanism == UM_LAZY) {
763 GENERIC_LMM_ACTION(action).index_heap = -1;
764 GENERIC_LMM_ACTION(action).last_update = surf_get_clock();
767 bandwidth_bound = -1.0;
768 if (sg_weight_S_parameter > 0) {
769 xbt_dynar_foreach(route, i, link) {
771 sg_weight_S_parameter /
772 (link->lmm_resource.power.peak * link->lmm_resource.power.scale);
775 xbt_dynar_foreach(route, i, link) {
776 double bb = bandwidth_factor_callback(size) *
777 (link->lmm_resource.power.peak * link->lmm_resource.power.scale);
779 (bandwidth_bound < 0.0) ? bb : min(bandwidth_bound, bb);
782 action->lat_current = action->latency;
783 action->latency *= latency_factor_callback(size);
785 bandwidth_constraint_callback(action->rate, bandwidth_bound, size);
787 xbt_assert(!xbt_dynar_is_empty(route),
788 "Using a model with a gap (e.g., SMPI) with a platform without links (e.g. vivaldi)!!!");
790 link = *(link_CM02_t *) xbt_dynar_get_ptr(route, 0);
791 gap_append(size, link, action);
792 XBT_DEBUG("Comm %p: %s -> %s gap=%f (lat=%f)",
793 action, src->name, dst->name, action->sender.gap,
797 constraints_per_variable = xbt_dynar_length(route);
798 if (back_route != NULL)
799 constraints_per_variable += xbt_dynar_length(back_route);
801 if (action->latency > 0) {
802 GENERIC_LMM_ACTION(action).variable =
803 lmm_variable_new(surf_network_model->model_private->maxmin_system, action, 0.0, -1.0,
804 constraints_per_variable);
805 if (surf_network_model->model_private->update_mechanism == UM_LAZY) {
806 // add to the heap the event when the latency is payed
807 XBT_DEBUG("Added action (%p) one latency event at date %f", action,
808 action->latency + GENERIC_LMM_ACTION(action).last_update);
809 surf_action_lmm_heap_insert(surf_network_model->model_private->action_heap,(surf_action_lmm_t)action, action->latency + GENERIC_LMM_ACTION(action).last_update,
810 xbt_dynar_is_empty(route) ? NORMAL : LATENCY);
813 GENERIC_LMM_ACTION(action).variable =
814 lmm_variable_new(surf_network_model->model_private->maxmin_system, action, 1.0, -1.0,
815 constraints_per_variable);
817 if (action->rate < 0) {
818 lmm_update_variable_bound(surf_network_model->model_private->maxmin_system, GENERIC_LMM_ACTION(action).variable,
819 (action->lat_current > 0) ?
820 sg_tcp_gamma / (2.0 *
821 action->lat_current) : -1.0);
823 lmm_update_variable_bound(surf_network_model->model_private->maxmin_system, GENERIC_LMM_ACTION(action).variable,
824 (action->lat_current > 0) ?
826 sg_tcp_gamma / (2.0 *
827 action->lat_current))
831 xbt_dynar_foreach(route, i, link) {
832 lmm_expand(surf_network_model->model_private->maxmin_system, link->lmm_resource.constraint,
833 GENERIC_LMM_ACTION(action).variable, 1.0);
836 if (sg_network_crosstraffic == 1) {
837 XBT_DEBUG("Fullduplex active adding backward flow using 5%%");
838 xbt_dynar_foreach(back_route, i, link) {
839 lmm_expand(surf_network_model->model_private->maxmin_system, link->lmm_resource.constraint,
840 GENERIC_LMM_ACTION(action).variable, .05);
844 xbt_dynar_free(&route);
847 return (surf_action_t) action;
850 static xbt_dynar_t net_get_route(void *src, void *dst)
852 xbt_dynar_t route = NULL;
853 routing_get_route_and_latency(src, dst, &route, NULL);
857 static double net_get_link_bandwidth(const void *link)
859 surf_resource_lmm_t lmm = (surf_resource_lmm_t) link;
860 return lmm->power.peak * lmm->power.scale;
863 static double net_get_link_latency(const void *link)
865 return ((link_CM02_t) link)->lat_current;
868 static int net_link_shared(const void *link)
871 lmm_constraint_is_shared(((surf_resource_lmm_t) link)->constraint);
874 static void net_finalize(void)
876 lmm_system_free(surf_network_model->model_private->maxmin_system);
877 surf_network_model->model_private->maxmin_system = NULL;
879 if (surf_network_model->model_private->update_mechanism == UM_LAZY) {
880 xbt_heap_free(surf_network_model->model_private->action_heap);
881 xbt_swag_free(surf_network_model->model_private->modified_set);
884 surf_model_exit(surf_network_model);
885 surf_network_model = NULL;
888 xbt_dynar_free(&smpi_bw_factor);
890 xbt_dynar_free(&smpi_lat_factor);
893 static void smpi_gap_append(double size, const link_CM02_t link,
894 surf_action_network_CM02_t action)
896 const char *src = link->lmm_resource.generic_resource.name;
898 surf_action_network_CM02_t last_action;
901 if (sg_sender_gap > 0.0) {
903 gap_lookup = xbt_dict_new();
905 fifo = (xbt_fifo_t) xbt_dict_get_or_null(gap_lookup, src);
906 action->sender.gap = 0.0;
907 if (fifo && xbt_fifo_size(fifo) > 0) {
908 /* Compute gap from last send */
910 (surf_action_network_CM02_t)
911 xbt_fifo_get_item_content(xbt_fifo_get_last_item(fifo));
912 bw = net_get_link_bandwidth(link);
914 last_action->sender.gap + max(sg_sender_gap,
915 last_action->sender.size / bw);
916 action->latency += action->sender.gap;
918 /* Append action as last send */
919 action->sender.link_name = link->lmm_resource.generic_resource.name;
921 (xbt_fifo_t) xbt_dict_get_or_null(gap_lookup,
922 action->sender.link_name);
924 fifo = xbt_fifo_new();
925 xbt_dict_set(gap_lookup, action->sender.link_name, fifo, NULL);
927 action->sender.fifo_item = xbt_fifo_push(fifo, action);
928 action->sender.size = size;
932 static void smpi_gap_remove(surf_action_network_CM02_t action)
937 if (sg_sender_gap > 0.0 && action->sender.link_name
938 && action->sender.fifo_item) {
940 (xbt_fifo_t) xbt_dict_get_or_null(gap_lookup,
941 action->sender.link_name);
942 xbt_fifo_remove_item(fifo, action->sender.fifo_item);
943 size = xbt_fifo_size(fifo);
946 xbt_dict_remove(gap_lookup, action->sender.link_name);
947 size = xbt_dict_length(gap_lookup);
949 xbt_dict_free(&gap_lookup);
955 static void set_update_mechanism(void)
957 char *optim = xbt_cfg_get_string(_surf_cfg_set, "network/optim");
959 xbt_cfg_get_int(_surf_cfg_set, "network/maxmin_selective_update");
961 if (!strcmp(optim, "Full")) {
962 surf_network_model->model_private->update_mechanism = UM_FULL;
963 surf_network_model->model_private->selective_update = select;
964 } else if (!strcmp(optim, "Lazy")) {
965 surf_network_model->model_private->update_mechanism = UM_LAZY;
966 surf_network_model->model_private->selective_update = 1;
967 xbt_assert((select == 1)
969 (xbt_cfg_is_default_value
970 (_surf_cfg_set, "network/maxmin_selective_update")),
971 "Disabling selective update while using the lazy update mechanism is dumb!");
973 xbt_die("Unsupported optimization (%s) for this model", optim);
977 static void surf_network_model_init_internal(void)
979 s_surf_action_network_CM02_t comm;
980 surf_network_model = surf_model_init();
982 set_update_mechanism();
984 surf_network_model->name = "network";
985 surf_network_model->action_unref = surf_action_unref;
986 surf_network_model->action_cancel = surf_action_cancel;
987 surf_network_model->action_recycle = net_action_recycle;
989 surf_network_model->get_remains = net_action_get_remains;
991 #ifdef HAVE_LATENCY_BOUND_TRACKING
992 surf_network_model->get_latency_limited = net_get_link_latency_limited;
995 surf_network_model->set_category = surf_action_set_category;
998 surf_network_model->model_private->resource_used = net_resource_used;
999 if (surf_network_model->model_private->update_mechanism == UM_LAZY) {
1000 surf_network_model->model_private->share_resources =
1001 net_share_resources_lazy;
1002 surf_network_model->model_private->update_actions_state =
1003 net_update_actions_state_lazy;
1004 } else if (surf_network_model->model_private->update_mechanism == UM_FULL) {
1005 surf_network_model->model_private->share_resources =
1006 net_share_resources_full;
1007 surf_network_model->model_private->update_actions_state =
1008 net_update_actions_state_full;
1011 surf_network_model->model_private->update_resource_state =
1012 net_update_resource_state;
1013 surf_network_model->model_private->finalize = net_finalize;
1015 surf_network_model->suspend = surf_action_suspend;
1016 surf_network_model->resume = surf_action_resume;
1017 surf_network_model->is_suspended = surf_action_is_suspended;
1018 surf_cpu_model->set_max_duration = surf_action_set_max_duration;
1020 surf_network_model->extension.network.communicate = net_communicate;
1021 surf_network_model->extension.network.get_route = net_get_route;
1022 surf_network_model->extension.network.get_link_bandwidth =
1023 net_get_link_bandwidth;
1024 surf_network_model->extension.network.get_link_latency =
1025 net_get_link_latency;
1026 surf_network_model->extension.network.link_shared = net_link_shared;
1027 surf_network_model->extension.network.add_traces = net_add_traces;
1028 surf_network_model->extension.network.create_resource =
1029 net_create_resource;
1031 if (!surf_network_model->model_private->maxmin_system)
1032 surf_network_model->model_private->maxmin_system = lmm_system_new(surf_network_model->model_private->selective_update);
1034 routing_model_create(net_create_resource("__loopback__",
1035 498000000, NULL, 0.000015, NULL,
1036 SURF_RESOURCE_ON, NULL,
1037 SURF_LINK_FATPIPE, NULL));
1039 if (surf_network_model->model_private->update_mechanism == UM_LAZY) {
1040 surf_network_model->model_private->action_heap = xbt_heap_new(8, NULL);
1041 xbt_heap_set_update_callback(surf_network_model->model_private->action_heap,
1042 surf_action_lmm_update_index_heap);
1043 surf_network_model->model_private->modified_set =
1044 xbt_swag_new(xbt_swag_offset(comm, generic_lmm_action.action_list_hookup));
1045 surf_network_model->model_private->maxmin_system->keep_track = surf_network_model->model_private->modified_set;
1049 /************************************************************************/
1050 /* New model based on LV08 and experimental results of MPI ping-pongs */
1051 /************************************************************************/
1052 /* @Inproceedings{smpi_ipdps, */
1053 /* author={Pierre-Nicolas Clauss and Mark Stillwell and Stéphane Genaud and Frédéric Suter and Henri Casanova and Martin Quinson}, */
1054 /* title={Single Node On-Line Simulation of {MPI} Applications with SMPI}, */
1055 /* booktitle={25th IEEE International Parallel and Distributed Processing Symposium (IPDPS'11)}, */
1056 /* address={Anchorage (Alaska) USA}, */
1060 void surf_network_model_init_SMPI(void)
1063 if (surf_network_model)
1066 surf_network_model_init_internal();
1067 latency_factor_callback = &smpi_latency_factor;
1068 bandwidth_factor_callback = &smpi_bandwidth_factor;
1069 bandwidth_constraint_callback = &smpi_bandwidth_constraint;
1070 gap_append = &smpi_gap_append;
1071 gap_remove = &smpi_gap_remove;
1072 net_define_callbacks();
1073 xbt_dynar_push(model_list, &surf_network_model);
1074 network_solve = lmm_solve;
1076 xbt_cfg_setdefault_double(_surf_cfg_set, "network/sender_gap", 10e-6);
1077 xbt_cfg_setdefault_double(_surf_cfg_set, "network/weight_S", 8775);
1080 /************************************************************************/
1081 /* New model based on optimizations discussed during Pedro Velho's thesis*/
1082 /************************************************************************/
1083 /* @techreport{VELHO:2011:HAL-00646896:1, */
1084 /* url = {http://hal.inria.fr/hal-00646896/en/}, */
1085 /* title = {{Flow-level network models: have we reached the limits?}}, */
1086 /* author = {Velho, Pedro and Schnorr, Lucas and Casanova, Henri and Legrand, Arnaud}, */
1087 /* type = {Rapport de recherche}, */
1088 /* institution = {INRIA}, */
1089 /* number = {RR-7821}, */
1090 /* year = {2011}, */
1092 /* pdf = {http://hal.inria.fr/hal-00646896/PDF/rr-validity.pdf}, */
1094 void surf_network_model_init_LegrandVelho(void)
1096 if (surf_network_model)
1099 surf_network_model_init_internal();
1100 net_define_callbacks();
1101 xbt_dynar_push(model_list, &surf_network_model);
1102 network_solve = lmm_solve;
1104 xbt_cfg_setdefault_double(_surf_cfg_set, "network/latency_factor",
1106 xbt_cfg_setdefault_double(_surf_cfg_set, "network/bandwidth_factor",
1108 xbt_cfg_setdefault_double(_surf_cfg_set, "network/weight_S", 20537);
1111 /***************************************************************************/
1112 /* The nice TCP sharing model designed by Loris Marchal and Henri Casanova */
1113 /***************************************************************************/
1114 /* @TechReport{ rr-lip2002-40, */
1115 /* author = {Henri Casanova and Loris Marchal}, */
1116 /* institution = {LIP}, */
1117 /* title = {A Network Model for Simulation of Grid Application}, */
1118 /* number = {2002-40}, */
1119 /* month = {oct}, */
1122 void surf_network_model_init_CM02(void)
1125 if (surf_network_model)
1128 surf_network_model_init_internal();
1129 net_define_callbacks();
1130 xbt_dynar_push(model_list, &surf_network_model);
1131 network_solve = lmm_solve;
1133 xbt_cfg_setdefault_double(_surf_cfg_set, "network/latency_factor", 1.0);
1134 xbt_cfg_setdefault_double(_surf_cfg_set, "network/bandwidth_factor",
1136 xbt_cfg_setdefault_double(_surf_cfg_set, "network/weight_S", 0.0);
1139 /***************************************************************************/
1140 /* The models from Steven H. Low */
1141 /***************************************************************************/
1142 /* @article{Low03, */
1143 /* author={Steven H. Low}, */
1144 /* title={A Duality Model of {TCP} and Queue Management Algorithms}, */
1146 /* journal={{IEEE/ACM} Transactions on Networking}, */
1147 /* volume={11}, number={4}, */
1149 void surf_network_model_init_Reno(void)
1151 if (surf_network_model)
1154 surf_network_model_init_internal();
1155 net_define_callbacks();
1157 xbt_dynar_push(model_list, &surf_network_model);
1158 lmm_set_default_protocol_function(func_reno_f, func_reno_fp,
1160 network_solve = lagrange_solve;
1162 xbt_cfg_setdefault_double(_surf_cfg_set, "network/latency_factor", 10.4);
1163 xbt_cfg_setdefault_double(_surf_cfg_set, "network/bandwidth_factor",
1165 xbt_cfg_setdefault_double(_surf_cfg_set, "network/weight_S", 8775);
1169 void surf_network_model_init_Reno2(void)
1171 if (surf_network_model)
1174 surf_network_model_init_internal();
1175 net_define_callbacks();
1177 xbt_dynar_push(model_list, &surf_network_model);
1178 lmm_set_default_protocol_function(func_reno2_f, func_reno2_fp,
1180 network_solve = lagrange_solve;
1182 xbt_cfg_setdefault_double(_surf_cfg_set, "network/latency_factor", 10.4);
1183 xbt_cfg_setdefault_double(_surf_cfg_set, "network/bandwidth_factor",
1185 xbt_cfg_setdefault_double(_surf_cfg_set, "network/weight_S_parameter",
1189 void surf_network_model_init_Vegas(void)
1191 if (surf_network_model)
1194 surf_network_model_init_internal();
1195 net_define_callbacks();
1197 xbt_dynar_push(model_list, &surf_network_model);
1198 lmm_set_default_protocol_function(func_vegas_f, func_vegas_fp,
1200 network_solve = lagrange_solve;
1202 xbt_cfg_setdefault_double(_surf_cfg_set, "network/latency_factor", 10.4);
1203 xbt_cfg_setdefault_double(_surf_cfg_set, "network/bandwidth_factor",
1205 xbt_cfg_setdefault_double(_surf_cfg_set, "network/weight_S", 8775);