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 lmm_system_t network_maxmin_system = NULL;
37 static void (*network_solve) (lmm_system_t) = NULL;
39 xbt_dynar_t smpi_bw_factor = NULL;
40 xbt_dynar_t smpi_lat_factor = NULL;
42 typedef struct s_smpi_factor *smpi_factor_t;
43 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 e_UM_t network_update_mechanism = UM_UNDEFINED;
59 static int net_selective_update = 0;
61 static int net_action_is_suspended(surf_action_t action);
62 static void update_action_remaining_lazy(double now);
64 static xbt_swag_t net_modified_set = NULL;
65 static xbt_heap_t net_action_heap = NULL;
67 /* added to manage the communication action's heap */
68 static void net_action_update_index_heap(void *action, int i)
70 ((surf_action_network_CM02_t) action)->index_heap = i;
73 /* insert action on heap using a given key and a hat (heap_action_type)
74 * a hat can be of three types for communications:
76 * NORMAL = this is a normal heap entry stating the date to finish transmitting
77 * LATENCY = this is a heap entry to warn us when the latency is payed
78 * MAX_DURATION =this is a heap entry to warn us when the max_duration limit is reached
80 static void heap_insert(surf_action_network_CM02_t action, double key,
81 enum heap_action_type hat)
84 xbt_heap_push(net_action_heap, action, key);
87 static void heap_remove(surf_action_network_CM02_t action)
90 if (((surf_action_network_CM02_t) action)->index_heap >= 0) {
91 xbt_heap_remove(net_action_heap, action->index_heap);
95 /******************************************************************************/
96 /* Factors callbacks */
97 /******************************************************************************/
98 static double constant_latency_factor(double size)
100 return sg_latency_factor;
103 static double constant_bandwidth_factor(double size)
105 return sg_bandwidth_factor;
108 static double constant_bandwidth_constraint(double rate, double bound,
114 /**********************/
116 /**********************/
117 static xbt_dynar_t parse_factor(const char *smpi_coef_string)
120 unsigned int iter = 0;
121 s_smpi_factor_t fact;
122 xbt_dynar_t smpi_factor, radical_elements, radical_elements2 = NULL;
124 smpi_factor = xbt_dynar_new(sizeof(s_smpi_factor_t), NULL);
125 radical_elements = xbt_str_split(smpi_coef_string, ";");
126 xbt_dynar_foreach(radical_elements, iter, value) {
128 radical_elements2 = xbt_str_split(value, ":");
129 if (xbt_dynar_length(radical_elements2) != 2)
130 xbt_die("Malformed radical for smpi factor!");
131 fact.factor = atol(xbt_dynar_get_as(radical_elements2, 0, char *));
132 fact.value = atof(xbt_dynar_get_as(radical_elements2, 1, char *));
133 xbt_dynar_push_as(smpi_factor, s_smpi_factor_t, fact);
134 XBT_DEBUG("smpi_factor:\t%ld : %f", fact.factor, fact.value);
135 xbt_dynar_free(&radical_elements2);
137 xbt_dynar_free(&radical_elements);
141 static double smpi_bandwidth_factor(double size)
145 parse_factor(xbt_cfg_get_string(_surf_cfg_set, "smpi/bw_factor"));
147 unsigned int iter = 0;
148 s_smpi_factor_t fact;
149 xbt_dynar_foreach(smpi_bw_factor, iter, fact) {
150 if (size >= fact.factor) {
151 XBT_DEBUG("%lf >= %ld return %f", size, fact.factor, fact.value);
159 static double smpi_latency_factor(double size)
161 if (!smpi_lat_factor)
163 parse_factor(xbt_cfg_get_string(_surf_cfg_set, "smpi/lat_factor"));
165 unsigned int iter = 0;
166 s_smpi_factor_t fact;
167 xbt_dynar_foreach(smpi_lat_factor, iter, fact) {
168 if (size >= fact.factor) {
169 XBT_DEBUG("%lf >= %ld return %f", size, fact.factor, fact.value);
177 /**--------- <copy/paste C code snippet in surf/network.c> -----------*/
179 static double smpi_bandwidth_constraint(double rate, double bound,
182 return rate < 0 ? bound : min(bound, rate * smpi_bandwidth_factor(size));
185 static double (*latency_factor_callback) (double) =
186 &constant_latency_factor;
187 static double (*bandwidth_factor_callback) (double) =
188 &constant_bandwidth_factor;
189 static double (*bandwidth_constraint_callback) (double, double, double) =
190 &constant_bandwidth_constraint;
192 static void (*gap_append) (double, const link_CM02_t,
193 surf_action_network_CM02_t) = NULL;
194 static void (*gap_remove) (surf_action_network_CM02_t) = NULL;
196 static void *net_create_resource(const char *name,
198 tmgr_trace_t bw_trace,
200 tmgr_trace_t lat_trace,
201 e_surf_resource_state_t
203 tmgr_trace_t state_trace,
204 e_surf_link_sharing_policy_t
205 policy, xbt_dict_t properties)
207 link_CM02_t nw_link = (link_CM02_t)
208 surf_resource_lmm_new(sizeof(s_link_CM02_t),
209 surf_network_model, name, properties,
210 network_maxmin_system,
211 sg_bandwidth_factor * bw_initial,
213 state_initial, state_trace,
214 bw_initial, bw_trace);
216 xbt_assert(!xbt_lib_get_or_null(link_lib, name, SURF_LINK_LEVEL),
217 "Link '%s' declared several times in the platform file.",
220 nw_link->lat_current = lat_initial;
223 tmgr_history_add_trace(history, lat_trace, 0.0, 0, nw_link);
225 if (policy == SURF_LINK_FATPIPE)
226 lmm_constraint_shared(nw_link->lmm_resource.constraint);
228 xbt_lib_set(link_lib, name, SURF_LINK_LEVEL, nw_link);
233 static void net_parse_link_init(sg_platf_link_cbarg_t link)
235 if (link->policy == SURF_LINK_FULLDUPLEX) {
237 link_id = bprintf("%s_UP", link->id);
238 net_create_resource(link_id,
240 link->bandwidth_trace,
244 link->state_trace, link->policy, link->properties);
246 link_id = bprintf("%s_DOWN", link->id);
247 net_create_resource(link_id,
249 link->bandwidth_trace,
253 link->state_trace, link->policy, link->properties);
256 net_create_resource(link->id,
258 link->bandwidth_trace,
262 link->state_trace, link->policy, link->properties);
266 static void net_add_traces(void)
268 xbt_dict_cursor_t cursor = NULL;
269 char *trace_name, *elm;
271 static int called = 0;
276 /* connect all traces relative to network */
277 xbt_dict_foreach(trace_connect_list_link_avail, cursor, trace_name, elm) {
278 tmgr_trace_t trace = xbt_dict_get_or_null(traces_set_list, trace_name);
279 link_CM02_t link = xbt_lib_get_or_null(link_lib, elm, SURF_LINK_LEVEL);
281 xbt_assert(link, "Cannot connect trace %s to link %s: link undefined",
284 "Cannot connect trace %s to link %s: trace undefined",
287 link->lmm_resource.state_event =
288 tmgr_history_add_trace(history, trace, 0.0, 0, link);
291 xbt_dict_foreach(trace_connect_list_bandwidth, cursor, trace_name, elm) {
292 tmgr_trace_t trace = xbt_dict_get_or_null(traces_set_list, trace_name);
293 link_CM02_t link = xbt_lib_get_or_null(link_lib, elm, SURF_LINK_LEVEL);
295 xbt_assert(link, "Cannot connect trace %s to link %s: link undefined",
298 "Cannot connect trace %s to link %s: trace undefined",
301 link->lmm_resource.power.event =
302 tmgr_history_add_trace(history, trace, 0.0, 0, link);
305 xbt_dict_foreach(trace_connect_list_latency, cursor, trace_name, elm) {
306 tmgr_trace_t trace = xbt_dict_get_or_null(traces_set_list, trace_name);
307 link_CM02_t link = xbt_lib_get_or_null(link_lib, elm, SURF_LINK_LEVEL);
309 xbt_assert(link, "Cannot connect trace %s to link %s: link undefined",
312 "Cannot connect trace %s to link %s: trace undefined",
315 link->lat_event = tmgr_history_add_trace(history, trace, 0.0, 0, link);
319 static void net_define_callbacks(void)
321 /* Figuring out the network links */
322 sg_platf_link_add_cb(net_parse_link_init);
323 sg_platf_postparse_add_cb(net_add_traces);
326 static int net_resource_used(void *resource_id)
328 return lmm_constraint_used(network_maxmin_system, ((surf_resource_lmm_t)
333 static int net_action_unref(surf_action_t action)
336 if (!action->refcount) {
337 xbt_swag_remove(action, action->state_set);
338 if (((surf_action_lmm_t)action)->variable) {
339 lmm_variable_free(network_maxmin_system,
340 ((surf_action_lmm_t) action)->variable);
342 if (network_update_mechanism == UM_LAZY) { // remove action from the heap
343 heap_remove((surf_action_network_CM02_t) action);
344 xbt_swag_remove(action, net_modified_set);
347 xbt_free(((surf_action_network_CM02_t) action)->src_name);
348 xbt_free(((surf_action_network_CM02_t) action)->dst_name);
349 xbt_free(action->category);
351 surf_action_free(&action);
359 static void net_action_cancel(surf_action_t action)
361 XBT_DEBUG("cancel action %p", action);
362 surf_network_model->action_state_set(action, SURF_ACTION_FAILED);
363 if (network_update_mechanism == UM_LAZY) { // remove action from the heap
364 xbt_swag_remove(action, net_modified_set);
365 heap_remove((surf_action_network_CM02_t) action);
369 void net_action_recycle(surf_action_t action)
374 #ifdef HAVE_LATENCY_BOUND_TRACKING
375 int net_get_link_latency_limited(surf_action_t action)
377 return action->latency_limited;
381 double net_action_get_remains(surf_action_t action)
383 if (network_update_mechanism == UM_LAZY) /* update remains before return it */
384 update_action_remaining_lazy(surf_get_clock());
385 return action->remains;
388 static void update_action_remaining_lazy(double now)
390 surf_action_network_CM02_t action = NULL;
393 xbt_swag_foreach(action, net_modified_set) {
395 if (GENERIC_LMM_ACTION(action).suspended != 0) {
399 delta = now - action->last_update;
401 double_update(&(((surf_action_t)action)->remains),
402 lmm_variable_getvalue(((surf_action_lmm_t) action)->variable) * delta);
404 if (((surf_action_t)action)->max_duration != NO_MAX_DURATION)
405 double_update(&(((surf_action_t)action)->max_duration), delta);
407 if ((((surf_action_t)action)->remains <= 0) &&
408 (lmm_get_variable_weight(((surf_action_lmm_t)action)->variable) > 0)) {
409 ((surf_action_t)action)->finish = surf_get_clock();
410 surf_network_model->action_state_set((surf_action_t) action,
413 } else if (((((surf_action_t)action)->max_duration != NO_MAX_DURATION)
414 && (((surf_action_t)action)->max_duration <= 0))) {
415 ((surf_action_t)action)->finish = surf_get_clock();
416 surf_network_model->action_state_set((surf_action_t) action,
421 action->last_update = now;
425 static double net_share_resources_full(double now)
427 s_surf_action_lmm_t s_action;
428 surf_action_network_CM02_t action = NULL;
429 xbt_swag_t running_actions =
430 surf_network_model->states.running_action_set;
433 min = generic_maxmin_share_resources(running_actions,
434 xbt_swag_offset(s_action,
436 network_maxmin_system,
439 #define VARIABLE(action) (*((lmm_variable_t*)(((char *) (action)) + xbt_swag_offset(s_action, variable) )))
441 xbt_swag_foreach(action, running_actions) {
442 #ifdef HAVE_LATENCY_BOUND_TRACKING
443 if (lmm_is_variable_limited_by_latency(action->variable)) {
444 GENERIC_LMM_ACTION(action).latency_limited = 1;
446 GENERIC_LMM_ACTION(action).latency_limited = 0;
449 if (action->latency > 0) {
450 min = (min < 0) ? action->latency : min(min, action->latency);
454 XBT_DEBUG("Min of share resources %f", min);
459 static double net_share_resources_lazy(double now)
461 surf_action_network_CM02_t action = NULL;
466 ("Before share resources, the size of modified actions set is %d",
467 xbt_swag_size(net_modified_set));
468 update_action_remaining_lazy(now);
470 lmm_solve(network_maxmin_system);
473 ("After share resources, The size of modified actions set is %d",
474 xbt_swag_size(net_modified_set));
476 xbt_swag_foreach(action, net_modified_set) {
477 int max_dur_flag = 0;
479 if (GENERIC_ACTION(action).state_set !=
480 surf_network_model->states.running_action_set) {
484 /* bogus priority, skip it */
485 if (GENERIC_ACTION(action).priority <= 0) {
490 value = lmm_variable_getvalue(GENERIC_LMM_ACTION(action).variable);
492 if (GENERIC_ACTION(action).remains > 0) {
493 value = GENERIC_ACTION(action).remains / value;
501 if ((GENERIC_ACTION(action).max_duration != NO_MAX_DURATION)
503 || GENERIC_ACTION(action).start +
504 GENERIC_ACTION(action).max_duration < min)) {
505 min = GENERIC_ACTION(action).start +
506 GENERIC_ACTION(action).max_duration;
510 XBT_DEBUG("Action(%p) Start %lf Finish %lf Max_duration %lf", action,
511 GENERIC_ACTION(action).start, now + value,
512 GENERIC_ACTION(action).max_duration);
514 if (action->index_heap >= 0) {
515 heap_remove((surf_action_network_CM02_t) action);
519 heap_insert((surf_action_network_CM02_t) action, min,
520 max_dur_flag ? MAX_DURATION : NORMAL);
521 XBT_DEBUG("Insert at heap action(%p) min %lf now %lf", action, min,
526 //hereafter must have already the min value for this resource model
527 if (xbt_heap_size(net_action_heap) > 0) {
528 min = xbt_heap_maxkey(net_action_heap) - now;
533 XBT_DEBUG("The minimum with the HEAP %lf", min);
538 static void net_update_actions_state_full(double now, double delta)
541 surf_action_network_CM02_t action = NULL;
542 surf_action_network_CM02_t next_action = NULL;
543 xbt_swag_t running_actions =
544 surf_network_model->states.running_action_set;
546 xbt_swag_t failed_actions =
547 surf_network_model->states.failed_action_set;
550 xbt_swag_foreach_safe(action, next_action, running_actions) {
552 if (action->latency > 0) {
553 if (action->latency > deltap) {
554 double_update(&(action->latency), deltap);
557 double_update(&(deltap), action->latency);
558 action->latency = 0.0;
560 if ((action->latency == 0.0) && !(GENERIC_LMM_ACTION(action).suspended))
561 lmm_update_variable_weight(network_maxmin_system, GENERIC_LMM_ACTION(action).variable,
565 if (TRACE_is_enabled()) {
566 xbt_dynar_t route = NULL;
567 routing_get_route_and_latency(action->src_name, action->dst_name,
571 xbt_dynar_foreach(route, i, link) {
572 TRACE_surf_link_set_utilization(link->lmm_resource.
573 generic_resource.name,
574 (((surf_action_t)action)->data,
575 (surf_action_t) action,
576 lmm_variable_getvalue(action->
582 if (!lmm_get_number_of_cnst_from_var
583 (network_maxmin_system, GENERIC_LMM_ACTION(action).variable)) {
584 /* There is actually no link used, hence an infinite bandwidth.
585 * This happens often when using models like vivaldi.
586 * In such case, just make sure that the action completes immediately.
588 double_update(&(GENERIC_ACTION(action).remains),
589 GENERIC_ACTION(action).remains);
591 double_update(&(GENERIC_ACTION(action).remains),
592 lmm_variable_getvalue(GENERIC_LMM_ACTION(action).variable) * deltap);
593 if (((surf_action_t)action)->max_duration != NO_MAX_DURATION)
594 double_update(&(((surf_action_t)action)->max_duration), delta);
596 if ((GENERIC_ACTION(action).remains <= 0) &&
597 (lmm_get_variable_weight(GENERIC_LMM_ACTION(action).variable) > 0)) {
598 ((surf_action_t)action)->finish = surf_get_clock();
599 surf_network_model->action_state_set((surf_action_t) action,
604 } else if ((((surf_action_t)action)->max_duration != NO_MAX_DURATION)
605 && (((surf_action_t)action)->max_duration <= 0)) {
606 ((surf_action_t)action)->finish = surf_get_clock();
607 surf_network_model->action_state_set((surf_action_t) action,
617 static void net_update_actions_state_lazy(double now, double delta)
619 surf_action_network_CM02_t action = NULL;
621 while ((xbt_heap_size(net_action_heap) > 0)
622 && (double_equals(xbt_heap_maxkey(net_action_heap), now))) {
623 action = xbt_heap_pop(net_action_heap);
624 XBT_DEBUG("Action %p: finish", action);
625 GENERIC_ACTION(action).finish = surf_get_clock();
627 // if I am wearing a latency hat
628 if (action->hat == LATENCY) {
629 lmm_update_variable_weight(network_maxmin_system, GENERIC_LMM_ACTION(action).variable,
632 action->last_update = surf_get_clock();
634 // if I am wearing a max_duration or normal hat
635 } else if (action->hat == MAX_DURATION || action->hat == NORMAL) {
636 // no need to communicate anymore
637 // assume that flows that reached max_duration have remaining of 0
638 GENERIC_ACTION(action).remains = 0;
639 ((surf_action_t)action)->finish = surf_get_clock();
640 surf_network_model->action_state_set((surf_action_t) action,
648 static void net_update_resource_state(void *id,
649 tmgr_trace_event_t event_type,
650 double value, double date)
652 link_CM02_t nw_link = id;
653 /* printf("[" "%lg" "] Asking to update network card \"%s\" with value " */
654 /* "%lg" " for event %p\n", surf_get_clock(), nw_link->name, */
655 /* value, event_type); */
657 if (event_type == nw_link->lmm_resource.power.event) {
659 sg_weight_S_parameter / value - sg_weight_S_parameter /
660 (nw_link->lmm_resource.power.peak *
661 nw_link->lmm_resource.power.scale);
662 lmm_variable_t var = NULL;
663 lmm_element_t elem = NULL;
664 surf_action_network_CM02_t action = NULL;
666 nw_link->lmm_resource.power.peak = value;
667 lmm_update_constraint_bound(network_maxmin_system,
668 nw_link->lmm_resource.constraint,
669 sg_bandwidth_factor *
670 (nw_link->lmm_resource.power.peak *
671 nw_link->lmm_resource.power.scale));
673 TRACE_surf_link_set_bandwidth(date,
675 *) (((nw_link->lmm_resource).
676 generic_resource).name),
677 sg_bandwidth_factor *
678 (nw_link->lmm_resource.power.peak *
679 nw_link->lmm_resource.power.scale));
681 if (sg_weight_S_parameter > 0) {
682 while ((var = lmm_get_var_from_cnst
683 (network_maxmin_system, nw_link->lmm_resource.constraint,
685 action = lmm_variable_id(var);
686 action->weight += delta;
687 if (!(GENERIC_LMM_ACTION(action).suspended))
688 lmm_update_variable_weight(network_maxmin_system,
689 GENERIC_LMM_ACTION(action).variable, action->weight);
692 if (tmgr_trace_event_free(event_type))
693 nw_link->lmm_resource.power.event = NULL;
694 } else if (event_type == nw_link->lat_event) {
695 double delta = value - nw_link->lat_current;
696 lmm_variable_t var = NULL;
697 lmm_element_t elem = NULL;
698 surf_action_network_CM02_t action = NULL;
700 nw_link->lat_current = value;
701 while ((var = lmm_get_var_from_cnst
702 (network_maxmin_system, nw_link->lmm_resource.constraint,
704 action = lmm_variable_id(var);
705 action->lat_current += delta;
706 action->weight += delta;
707 if (action->rate < 0)
708 lmm_update_variable_bound(network_maxmin_system, GENERIC_LMM_ACTION(action).variable,
709 sg_tcp_gamma / (2.0 *
710 action->lat_current));
712 lmm_update_variable_bound(network_maxmin_system, GENERIC_LMM_ACTION(action).variable,
714 sg_tcp_gamma / (2.0 *
718 if (action->rate < sg_tcp_gamma / (2.0 * action->lat_current)) {
719 XBT_INFO("Flow is limited BYBANDWIDTH");
721 XBT_INFO("Flow is limited BYLATENCY, latency of flow is %f",
722 action->lat_current);
725 if (!(GENERIC_LMM_ACTION(action).suspended))
726 lmm_update_variable_weight(network_maxmin_system, GENERIC_LMM_ACTION(action).variable,
730 if (tmgr_trace_event_free(event_type))
731 nw_link->lat_event = NULL;
732 } else if (event_type == nw_link->lmm_resource.state_event) {
734 nw_link->lmm_resource.state_current = SURF_RESOURCE_ON;
736 lmm_constraint_t cnst = nw_link->lmm_resource.constraint;
737 lmm_variable_t var = NULL;
738 lmm_element_t elem = NULL;
740 nw_link->lmm_resource.state_current = SURF_RESOURCE_OFF;
741 while ((var = lmm_get_var_from_cnst
742 (network_maxmin_system, cnst, &elem))) {
743 surf_action_t action = lmm_variable_id(var);
745 if (surf_action_state_get(action) == SURF_ACTION_RUNNING ||
746 surf_action_state_get(action) == SURF_ACTION_READY) {
747 action->finish = date;
748 surf_network_model->action_state_set(action, SURF_ACTION_FAILED);
752 if (tmgr_trace_event_free(event_type))
753 nw_link->lmm_resource.state_event = NULL;
755 XBT_CRITICAL("Unknown event ! \n");
760 ("There were a resource state event, need to update actions related to the constraint (%p)",
761 nw_link->lmm_resource.constraint);
766 static surf_action_t net_communicate(const char *src_name,
767 const char *dst_name, double size,
773 surf_action_network_CM02_t action = NULL;
774 double bandwidth_bound;
775 double latency = 0.0;
776 xbt_dynar_t back_route = NULL;
777 int constraints_per_variable = 0;
779 xbt_dynar_t route = xbt_dynar_new(global_routing->size_of_link, NULL);
781 XBT_IN("(%s,%s,%g,%g)", src_name, dst_name, size, rate);
783 routing_get_route_and_latency(src_name, dst_name, &route, &latency);
784 xbt_assert(!xbt_dynar_is_empty(route) || latency,
785 "You're trying to send data from %s to %s but there is no connection at all between these two hosts.",
788 xbt_dynar_foreach(route, i, link) {
789 if (link->lmm_resource.state_current == SURF_RESOURCE_OFF) {
794 if (sg_network_crosstraffic == 1) {
795 routing_get_route_and_latency(dst_name, src_name, &back_route, NULL);
796 xbt_dynar_foreach(back_route, i, link) {
797 if (link->lmm_resource.state_current == SURF_RESOURCE_OFF) {
805 surf_action_new(sizeof(s_surf_action_network_CM02_t), size,
806 surf_network_model, failed);
807 #ifdef HAVE_LATENCY_BOUND_TRACKING
808 (GENERIC_LMM_ACTION(action)).latency_limited = 0;
810 action->weight = action->latency = latency;
812 xbt_swag_insert(action, ((surf_action_t)action)->state_set);
814 if (network_update_mechanism == UM_LAZY) {
815 action->index_heap = -1;
816 action->last_update = surf_get_clock();
819 bandwidth_bound = -1.0;
820 if (sg_weight_S_parameter > 0) {
821 xbt_dynar_foreach(route, i, link) {
823 sg_weight_S_parameter /
824 (link->lmm_resource.power.peak * link->lmm_resource.power.scale);
827 xbt_dynar_foreach(route, i, link) {
828 double bb = bandwidth_factor_callback(size) *
829 (link->lmm_resource.power.peak * link->lmm_resource.power.scale);
831 (bandwidth_bound < 0.0) ? bb : min(bandwidth_bound, bb);
834 action->lat_current = action->latency;
835 action->latency *= latency_factor_callback(size);
837 bandwidth_constraint_callback(action->rate, bandwidth_bound, size);
839 xbt_assert(!xbt_dynar_is_empty(route),
840 "Using a model with a gap (e.g., SMPI) with a platform without links (e.g. vivaldi)!!!");
842 link = *(link_CM02_t *) xbt_dynar_get_ptr(route, 0);
843 gap_append(size, link, action);
844 XBT_DEBUG("Comm %p: %s -> %s gap=%f (lat=%f)",
845 action, src_name, dst_name, action->sender.gap,
849 constraints_per_variable = xbt_dynar_length(route);
850 if (back_route != NULL)
851 constraints_per_variable += xbt_dynar_length(back_route);
853 if (action->latency > 0) {
854 GENERIC_LMM_ACTION(action).variable =
855 lmm_variable_new(network_maxmin_system, action, 0.0, -1.0,
856 constraints_per_variable);
857 if (network_update_mechanism == UM_LAZY) {
858 // add to the heap the event when the latency is payed
859 XBT_DEBUG("Added action (%p) one latency event at date %f", action,
860 action->latency + action->last_update);
861 heap_insert(action, action->latency + action->last_update,
862 xbt_dynar_is_empty(route) ? NORMAL : LATENCY);
865 GENERIC_LMM_ACTION(action).variable =
866 lmm_variable_new(network_maxmin_system, action, 1.0, -1.0,
867 constraints_per_variable);
869 if (action->rate < 0) {
870 lmm_update_variable_bound(network_maxmin_system, GENERIC_LMM_ACTION(action).variable,
871 (action->lat_current > 0) ?
872 sg_tcp_gamma / (2.0 *
873 action->lat_current) : -1.0);
875 lmm_update_variable_bound(network_maxmin_system, GENERIC_LMM_ACTION(action).variable,
876 (action->lat_current > 0) ?
878 sg_tcp_gamma / (2.0 *
879 action->lat_current))
883 xbt_dynar_foreach(route, i, link) {
884 lmm_expand(network_maxmin_system, link->lmm_resource.constraint,
885 GENERIC_LMM_ACTION(action).variable, 1.0);
888 if (sg_network_crosstraffic == 1) {
889 XBT_DEBUG("Fullduplex active adding backward flow using 5%%");
890 xbt_dynar_foreach(back_route, i, link) {
891 lmm_expand(network_maxmin_system, link->lmm_resource.constraint,
892 GENERIC_LMM_ACTION(action).variable, .05);
896 if (TRACE_is_enabled()) {
897 action->src_name = xbt_strdup(src_name);
898 action->dst_name = xbt_strdup(dst_name);
900 action->src_name = action->dst_name = NULL;
904 xbt_dynar_free(&route);
907 return (surf_action_t) action;
910 static xbt_dynar_t net_get_route(const char *src, const char *dst)
912 xbt_dynar_t route = NULL;
913 routing_get_route_and_latency(src, dst, &route, NULL);
917 static double net_get_link_bandwidth(const void *link)
919 surf_resource_lmm_t lmm = (surf_resource_lmm_t) link;
920 return lmm->power.peak * lmm->power.scale;
923 static double net_get_link_latency(const void *link)
925 return ((link_CM02_t) link)->lat_current;
928 static int net_link_shared(const void *link)
931 lmm_constraint_is_shared(((surf_resource_lmm_t) link)->constraint);
934 static void net_action_suspend(surf_action_t action)
936 ((surf_action_network_CM02_t) action)->generic_lmm_action.suspended = 1;
937 lmm_update_variable_weight(network_maxmin_system,
938 ((surf_action_network_CM02_t)
939 action)->generic_lmm_action.variable, 0.0);
941 if (network_update_mechanism == UM_LAZY) // remove action from the heap
942 heap_remove((surf_action_network_CM02_t) action);
945 static void net_action_resume(surf_action_t action)
947 if (((surf_action_network_CM02_t) action)->generic_lmm_action.suspended) {
948 lmm_update_variable_weight(network_maxmin_system,
949 ((surf_action_network_CM02_t)
950 action)->generic_lmm_action.variable,
951 ((surf_action_network_CM02_t)
953 ((surf_action_network_CM02_t) action)->generic_lmm_action.suspended = 0;
954 if (network_update_mechanism == UM_LAZY) // remove action from the heap
955 heap_remove((surf_action_network_CM02_t) action);
959 static int net_action_is_suspended(surf_action_t action)
961 return ((surf_action_network_CM02_t) action)->generic_lmm_action.suspended;
964 void net_action_set_max_duration(surf_action_t action, double duration)
966 action->max_duration = duration;
967 if (network_update_mechanism == UM_LAZY) // remove action from the heap
968 heap_remove((surf_action_network_CM02_t) action);
972 static void net_action_set_category(surf_action_t action,
973 const char *category)
975 action->category = xbt_strdup(category);
979 static void net_finalize(void)
981 surf_model_exit(surf_network_model);
982 surf_network_model = NULL;
984 lmm_system_free(network_maxmin_system);
985 network_maxmin_system = NULL;
987 if (network_update_mechanism == UM_LAZY) {
988 xbt_heap_free(net_action_heap);
989 xbt_swag_free(net_modified_set);
993 xbt_dynar_free(&smpi_bw_factor);
995 xbt_dynar_free(&smpi_lat_factor);
998 static void smpi_gap_append(double size, const link_CM02_t link,
999 surf_action_network_CM02_t action)
1001 const char *src = link->lmm_resource.generic_resource.name;
1003 surf_action_network_CM02_t last_action;
1006 if (sg_sender_gap > 0.0) {
1008 gap_lookup = xbt_dict_new();
1010 fifo = (xbt_fifo_t) xbt_dict_get_or_null(gap_lookup, src);
1011 action->sender.gap = 0.0;
1012 if (fifo && xbt_fifo_size(fifo) > 0) {
1013 /* Compute gap from last send */
1015 (surf_action_network_CM02_t)
1016 xbt_fifo_get_item_content(xbt_fifo_get_last_item(fifo));
1017 bw = net_get_link_bandwidth(link);
1018 action->sender.gap =
1019 last_action->sender.gap + max(sg_sender_gap,
1020 last_action->sender.size / bw);
1021 action->latency += action->sender.gap;
1023 /* Append action as last send */
1024 action->sender.link_name = link->lmm_resource.generic_resource.name;
1026 (xbt_fifo_t) xbt_dict_get_or_null(gap_lookup,
1027 action->sender.link_name);
1029 fifo = xbt_fifo_new();
1030 xbt_dict_set(gap_lookup, action->sender.link_name, fifo, NULL);
1032 action->sender.fifo_item = xbt_fifo_push(fifo, action);
1033 action->sender.size = size;
1037 static void smpi_gap_remove(surf_action_network_CM02_t action)
1042 if (sg_sender_gap > 0.0 && action->sender.link_name
1043 && action->sender.fifo_item) {
1045 (xbt_fifo_t) xbt_dict_get_or_null(gap_lookup,
1046 action->sender.link_name);
1047 xbt_fifo_remove_item(fifo, action->sender.fifo_item);
1048 size = xbt_fifo_size(fifo);
1050 xbt_fifo_free(fifo);
1051 xbt_dict_remove(gap_lookup, action->sender.link_name);
1052 size = xbt_dict_length(gap_lookup);
1054 xbt_dict_free(&gap_lookup);
1060 static void surf_network_model_init_internal(void)
1062 s_surf_action_network_CM02_t comm;
1063 surf_network_model = surf_model_init();
1065 surf_network_model->name = "network";
1066 surf_network_model->action_unref = net_action_unref;
1067 surf_network_model->action_cancel = net_action_cancel;
1068 surf_network_model->action_recycle = net_action_recycle;
1069 surf_network_model->get_remains = net_action_get_remains;
1070 #ifdef HAVE_LATENCY_BOUND_TRACKING
1071 surf_network_model->get_latency_limited = net_get_link_latency_limited;
1074 surf_network_model->set_category = net_action_set_category;
1077 surf_network_model->model_private->resource_used = net_resource_used;
1078 if (network_update_mechanism == UM_LAZY) {
1079 surf_network_model->model_private->share_resources =
1080 net_share_resources_lazy;
1081 surf_network_model->model_private->update_actions_state =
1082 net_update_actions_state_lazy;
1083 } else if (network_update_mechanism == UM_FULL) {
1084 surf_network_model->model_private->share_resources =
1085 net_share_resources_full;
1086 surf_network_model->model_private->update_actions_state =
1087 net_update_actions_state_full;
1090 surf_network_model->model_private->update_resource_state =
1091 net_update_resource_state;
1092 surf_network_model->model_private->finalize = net_finalize;
1094 surf_network_model->suspend = net_action_suspend;
1095 surf_network_model->resume = net_action_resume;
1096 surf_network_model->is_suspended = net_action_is_suspended;
1097 surf_cpu_model->set_max_duration = net_action_set_max_duration;
1099 surf_network_model->extension.network.communicate = net_communicate;
1100 surf_network_model->extension.network.get_route = net_get_route;
1101 surf_network_model->extension.network.get_link_bandwidth =
1102 net_get_link_bandwidth;
1103 surf_network_model->extension.network.get_link_latency =
1104 net_get_link_latency;
1105 surf_network_model->extension.network.link_shared = net_link_shared;
1106 surf_network_model->extension.network.add_traces = net_add_traces;
1107 surf_network_model->extension.network.create_resource =
1108 net_create_resource;
1110 if (!network_maxmin_system)
1111 network_maxmin_system = lmm_system_new(net_selective_update);
1113 routing_model_create(sizeof(link_CM02_t),
1114 net_create_resource("__loopback__",
1115 498000000, NULL, 0.000015, NULL,
1116 SURF_RESOURCE_ON, NULL,
1117 SURF_LINK_FATPIPE, NULL));
1119 if (network_update_mechanism == UM_LAZY) {
1120 net_action_heap = xbt_heap_new(8, NULL);
1121 xbt_heap_set_update_callback(net_action_heap,
1122 net_action_update_index_heap);
1124 xbt_swag_new(xbt_swag_offset(comm, action_list_hookup));
1125 network_maxmin_system->keep_track = net_modified_set;
1129 static void set_update_mechanism(void)
1132 TRACE_set_network_update_mechanism();
1135 char *optim = xbt_cfg_get_string(_surf_cfg_set, "network/optim");
1137 xbt_cfg_get_int(_surf_cfg_set, "network/maxmin_selective_update");
1139 if (!strcmp(optim, "Full")) {
1140 network_update_mechanism = UM_FULL;
1141 net_selective_update = select;
1142 } else if (!strcmp(optim, "Lazy")) {
1143 network_update_mechanism = UM_LAZY;
1144 net_selective_update = 1;
1145 xbt_assert((select == 1)
1147 (xbt_cfg_is_default_value
1148 (_surf_cfg_set, "network/maxmin_selective_update")),
1149 "Disabling selective update while using the lazy update mechanism is dumb!");
1151 xbt_die("Unsupported optimization (%s) for this model", optim);
1155 /************************************************************************/
1156 /* New model based on LV08 and experimental results of MPI ping-pongs */
1157 /************************************************************************/
1158 /* @Inproceedings{smpi_ipdps, */
1159 /* author={Pierre-Nicolas Clauss and Mark Stillwell and Stéphane Genaud and Frédéric Suter and Henri Casanova and Martin Quinson}, */
1160 /* title={Single Node On-Line Simulation of {MPI} Applications with SMPI}, */
1161 /* booktitle={25th IEEE International Parallel and Distributed Processing Symposium (IPDPS'11)}, */
1162 /* address={Anchorage (Alaska) USA}, */
1166 void surf_network_model_init_SMPI(void)
1169 if (surf_network_model)
1171 set_update_mechanism();
1173 surf_network_model_init_internal();
1174 latency_factor_callback = &smpi_latency_factor;
1175 bandwidth_factor_callback = &smpi_bandwidth_factor;
1176 bandwidth_constraint_callback = &smpi_bandwidth_constraint;
1177 gap_append = &smpi_gap_append;
1178 gap_remove = &smpi_gap_remove;
1179 net_define_callbacks();
1180 xbt_dynar_push(model_list, &surf_network_model);
1181 network_solve = lmm_solve;
1183 xbt_cfg_setdefault_double(_surf_cfg_set, "network/sender_gap", 10e-6);
1184 xbt_cfg_setdefault_double(_surf_cfg_set, "network/weight_S", 8775);
1187 /************************************************************************/
1188 /* New model based on optimizations discussed during Pedro Velho's thesis*/
1189 /************************************************************************/
1190 /* @techreport{VELHO:2011:HAL-00646896:1, */
1191 /* url = {http://hal.inria.fr/hal-00646896/en/}, */
1192 /* title = {{Flow-level network models: have we reached the limits?}}, */
1193 /* author = {Velho, Pedro and Schnorr, Lucas and Casanova, Henri and Legrand, Arnaud}, */
1194 /* type = {Rapport de recherche}, */
1195 /* institution = {INRIA}, */
1196 /* number = {RR-7821}, */
1197 /* year = {2011}, */
1199 /* pdf = {http://hal.inria.fr/hal-00646896/PDF/rr-validity.pdf}, */
1201 void surf_network_model_init_LegrandVelho(void)
1203 if (surf_network_model)
1206 set_update_mechanism();
1208 surf_network_model_init_internal();
1209 net_define_callbacks();
1210 xbt_dynar_push(model_list, &surf_network_model);
1211 network_solve = lmm_solve;
1213 xbt_cfg_setdefault_double(_surf_cfg_set, "network/latency_factor",
1215 xbt_cfg_setdefault_double(_surf_cfg_set, "network/bandwidth_factor",
1217 xbt_cfg_setdefault_double(_surf_cfg_set, "network/weight_S", 20537);
1220 /***************************************************************************/
1221 /* The nice TCP sharing model designed by Loris Marchal and Henri Casanova */
1222 /***************************************************************************/
1223 /* @TechReport{ rr-lip2002-40, */
1224 /* author = {Henri Casanova and Loris Marchal}, */
1225 /* institution = {LIP}, */
1226 /* title = {A Network Model for Simulation of Grid Application}, */
1227 /* number = {2002-40}, */
1228 /* month = {oct}, */
1231 void surf_network_model_init_CM02(void)
1234 if (surf_network_model)
1237 set_update_mechanism();
1238 surf_network_model_init_internal();
1239 net_define_callbacks();
1240 xbt_dynar_push(model_list, &surf_network_model);
1241 network_solve = lmm_solve;
1243 xbt_cfg_setdefault_double(_surf_cfg_set, "network/latency_factor", 1.0);
1244 xbt_cfg_setdefault_double(_surf_cfg_set, "network/bandwidth_factor",
1246 xbt_cfg_setdefault_double(_surf_cfg_set, "network/weight_S", 0.0);
1249 /***************************************************************************/
1250 /* The models from Steven H. Low */
1251 /***************************************************************************/
1252 /* @article{Low03, */
1253 /* author={Steven H. Low}, */
1254 /* title={A Duality Model of {TCP} and Queue Management Algorithms}, */
1256 /* journal={{IEEE/ACM} Transactions on Networking}, */
1257 /* volume={11}, number={4}, */
1259 void surf_network_model_init_Reno(void)
1261 if (surf_network_model)
1264 set_update_mechanism();
1265 surf_network_model_init_internal();
1266 net_define_callbacks();
1268 xbt_dynar_push(model_list, &surf_network_model);
1269 lmm_set_default_protocol_function(func_reno_f, func_reno_fp,
1271 network_solve = lagrange_solve;
1273 xbt_cfg_setdefault_double(_surf_cfg_set, "network/latency_factor", 10.4);
1274 xbt_cfg_setdefault_double(_surf_cfg_set, "network/bandwidth_factor",
1276 xbt_cfg_setdefault_double(_surf_cfg_set, "network/weight_S", 8775);
1280 void surf_network_model_init_Reno2(void)
1282 if (surf_network_model)
1285 set_update_mechanism();
1286 surf_network_model_init_internal();
1287 net_define_callbacks();
1289 xbt_dynar_push(model_list, &surf_network_model);
1290 lmm_set_default_protocol_function(func_reno2_f, func_reno2_fp,
1292 network_solve = lagrange_solve;
1294 xbt_cfg_setdefault_double(_surf_cfg_set, "network/latency_factor", 10.4);
1295 xbt_cfg_setdefault_double(_surf_cfg_set, "network/bandwidth_factor",
1297 xbt_cfg_setdefault_double(_surf_cfg_set, "network/weight_S_parameter",
1301 void surf_network_model_init_Vegas(void)
1303 if (surf_network_model)
1306 set_update_mechanism();
1307 surf_network_model_init_internal();
1308 net_define_callbacks();
1310 xbt_dynar_push(model_list, &surf_network_model);
1311 lmm_set_default_protocol_function(func_vegas_f, func_vegas_fp,
1313 network_solve = lagrange_solve;
1315 xbt_cfg_setdefault_double(_surf_cfg_set, "network/latency_factor", 10.4);
1316 xbt_cfg_setdefault_double(_surf_cfg_set, "network/bandwidth_factor",
1318 xbt_cfg_setdefault_double(_surf_cfg_set, "network/weight_S", 8775);