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 {
49 double sg_sender_gap = 0.0;
50 double sg_latency_factor = 1.0; /* default value; can be set by model or from command line */
51 double sg_bandwidth_factor = 1.0; /* default value; can be set by model or from command line */
52 double sg_weight_S_parameter = 0.0; /* default value; can be set by model or from command line */
54 double sg_tcp_gamma = 0.0;
55 int sg_network_crosstraffic = 0;
57 xbt_dict_t gap_lookup = NULL;
59 e_UM_t network_update_mechanism = UM_UNDEFINED;
60 static int net_selective_update = 0;
62 static int net_action_is_suspended(surf_action_t action);
63 static void net_update_action_remaining_lazy(double now);
65 static xbt_swag_t net_modified_set = NULL;
66 static xbt_heap_t net_action_heap = NULL;
69 /******************************************************************************/
70 /* Factors callbacks */
71 /******************************************************************************/
72 static double constant_latency_factor(double size)
74 return sg_latency_factor;
77 static double constant_bandwidth_factor(double size)
79 return sg_bandwidth_factor;
82 static double constant_bandwidth_constraint(double rate, double bound,
88 /**********************/
90 /**********************/
91 static xbt_dynar_t parse_factor(const char *smpi_coef_string)
94 unsigned int iter = 0;
96 xbt_dynar_t smpi_factor, radical_elements, radical_elements2 = NULL;
98 smpi_factor = xbt_dynar_new(sizeof(s_smpi_factor_t), NULL);
99 radical_elements = xbt_str_split(smpi_coef_string, ";");
100 xbt_dynar_foreach(radical_elements, iter, value) {
102 radical_elements2 = xbt_str_split(value, ":");
103 if (xbt_dynar_length(radical_elements2) != 2)
104 xbt_die("Malformed radical for smpi factor!");
105 fact.factor = atol(xbt_dynar_get_as(radical_elements2, 0, char *));
106 fact.value = atof(xbt_dynar_get_as(radical_elements2, 1, char *));
107 xbt_dynar_push_as(smpi_factor, s_smpi_factor_t, fact);
108 XBT_DEBUG("smpi_factor:\t%ld : %f", fact.factor, fact.value);
109 xbt_dynar_free(&radical_elements2);
111 xbt_dynar_free(&radical_elements);
115 static double smpi_bandwidth_factor(double size)
119 parse_factor(xbt_cfg_get_string(_surf_cfg_set, "smpi/bw_factor"));
121 unsigned int iter = 0;
122 s_smpi_factor_t fact;
123 xbt_dynar_foreach(smpi_bw_factor, iter, fact) {
124 if (size >= fact.factor) {
125 XBT_DEBUG("%lf >= %ld return %f", size, fact.factor, fact.value);
133 static double smpi_latency_factor(double size)
135 if (!smpi_lat_factor)
137 parse_factor(xbt_cfg_get_string(_surf_cfg_set, "smpi/lat_factor"));
139 unsigned int iter = 0;
140 s_smpi_factor_t fact;
141 xbt_dynar_foreach(smpi_lat_factor, iter, fact) {
142 if (size >= fact.factor) {
143 XBT_DEBUG("%lf >= %ld return %f", size, fact.factor, fact.value);
151 /**--------- <copy/paste C code snippet in surf/network.c> -----------*/
153 static double smpi_bandwidth_constraint(double rate, double bound,
156 return rate < 0 ? bound : min(bound, rate * smpi_bandwidth_factor(size));
159 static double (*latency_factor_callback) (double) =
160 &constant_latency_factor;
161 static double (*bandwidth_factor_callback) (double) =
162 &constant_bandwidth_factor;
163 static double (*bandwidth_constraint_callback) (double, double, double) =
164 &constant_bandwidth_constraint;
166 static void (*gap_append) (double, const link_CM02_t,
167 surf_action_network_CM02_t) = NULL;
168 static void (*gap_remove) (surf_action_network_CM02_t) = NULL;
170 static void *net_create_resource(const char *name,
172 tmgr_trace_t bw_trace,
174 tmgr_trace_t lat_trace,
175 e_surf_resource_state_t
177 tmgr_trace_t state_trace,
178 e_surf_link_sharing_policy_t
179 policy, xbt_dict_t properties)
181 link_CM02_t nw_link = (link_CM02_t)
182 surf_resource_lmm_new(sizeof(s_link_CM02_t),
183 surf_network_model, name, properties,
184 network_maxmin_system,
185 sg_bandwidth_factor * bw_initial,
187 state_initial, state_trace,
188 bw_initial, bw_trace);
190 xbt_assert(!xbt_lib_get_or_null(link_lib, name, SURF_LINK_LEVEL),
191 "Link '%s' declared several times in the platform file.",
194 nw_link->lat_current = lat_initial;
197 tmgr_history_add_trace(history, lat_trace, 0.0, 0, nw_link);
199 if (policy == SURF_LINK_FATPIPE)
200 lmm_constraint_shared(nw_link->lmm_resource.constraint);
202 xbt_lib_set(link_lib, name, SURF_LINK_LEVEL, nw_link);
203 XBT_DEBUG("Create link '%s'",name);
208 static void net_parse_link_init(sg_platf_link_cbarg_t link)
210 if (link->policy == SURF_LINK_FULLDUPLEX) {
212 link_id = bprintf("%s_UP", link->id);
213 net_create_resource(link_id,
215 link->bandwidth_trace,
219 link->state_trace, link->policy, link->properties);
221 link_id = bprintf("%s_DOWN", link->id);
222 net_create_resource(link_id,
224 link->bandwidth_trace,
228 link->state_trace, link->policy, link->properties);
231 net_create_resource(link->id,
233 link->bandwidth_trace,
237 link->state_trace, link->policy, link->properties);
241 static void net_add_traces(void)
243 xbt_dict_cursor_t cursor = NULL;
244 char *trace_name, *elm;
246 static int called = 0;
251 /* connect all traces relative to network */
252 xbt_dict_foreach(trace_connect_list_link_avail, cursor, trace_name, elm) {
253 tmgr_trace_t trace = xbt_dict_get_or_null(traces_set_list, trace_name);
254 link_CM02_t link = xbt_lib_get_or_null(link_lib, elm, SURF_LINK_LEVEL);
256 xbt_assert(link, "Cannot connect trace %s to link %s: link undefined",
259 "Cannot connect trace %s to link %s: trace undefined",
262 link->lmm_resource.state_event =
263 tmgr_history_add_trace(history, trace, 0.0, 0, link);
266 xbt_dict_foreach(trace_connect_list_bandwidth, cursor, trace_name, elm) {
267 tmgr_trace_t trace = xbt_dict_get_or_null(traces_set_list, trace_name);
268 link_CM02_t link = xbt_lib_get_or_null(link_lib, elm, SURF_LINK_LEVEL);
270 xbt_assert(link, "Cannot connect trace %s to link %s: link undefined",
273 "Cannot connect trace %s to link %s: trace undefined",
276 link->lmm_resource.power.event =
277 tmgr_history_add_trace(history, trace, 0.0, 0, link);
280 xbt_dict_foreach(trace_connect_list_latency, cursor, trace_name, elm) {
281 tmgr_trace_t trace = xbt_dict_get_or_null(traces_set_list, trace_name);
282 link_CM02_t link = xbt_lib_get_or_null(link_lib, elm, SURF_LINK_LEVEL);
284 xbt_assert(link, "Cannot connect trace %s to link %s: link undefined",
287 "Cannot connect trace %s to link %s: trace undefined",
290 link->lat_event = tmgr_history_add_trace(history, trace, 0.0, 0, link);
294 static void net_define_callbacks(void)
296 /* Figuring out the network links */
297 sg_platf_link_add_cb(net_parse_link_init);
298 sg_platf_postparse_add_cb(net_add_traces);
301 static int net_resource_used(void *resource_id)
303 return lmm_constraint_used(network_maxmin_system, ((surf_resource_lmm_t)
308 static int net_action_unref(surf_action_t action)
311 if (!action->refcount) {
312 xbt_swag_remove(action, action->state_set);
313 if (((surf_action_lmm_t)action)->variable) {
314 lmm_variable_free(network_maxmin_system,
315 ((surf_action_lmm_t) action)->variable);
317 if (network_update_mechanism == UM_LAZY) { // remove action from the heap
318 surf_action_lmm_heap_remove(net_action_heap,(surf_action_lmm_t) action);
319 xbt_swag_remove(action, net_modified_set);
321 surf_action_free(&action);
329 static void net_action_cancel(surf_action_t action)
331 XBT_DEBUG("cancel action %p", action);
332 surf_network_model->action_state_set(action, SURF_ACTION_FAILED);
333 if (network_update_mechanism == UM_LAZY) { // remove action from the heap
334 xbt_swag_remove(action, net_modified_set);
335 surf_action_lmm_heap_remove(net_action_heap,(surf_action_lmm_t) action);
339 void net_action_recycle(surf_action_t action)
344 #ifdef HAVE_LATENCY_BOUND_TRACKING
345 int net_get_link_latency_limited(surf_action_t action)
347 return action->latency_limited;
351 double net_action_get_remains(surf_action_t action)
353 if (network_update_mechanism == UM_LAZY) /* update remains before return it */
354 net_update_action_remaining_lazy(surf_get_clock());
355 return action->remains;
358 static void net_update_action_remaining_lazy(double now)
360 surf_action_lmm_t action = NULL;
363 xbt_swag_foreach(action, net_modified_set) {
365 if (action->suspended != 0) {
369 delta = now - action->last_update;
371 double_update(&(((surf_action_t)action)->remains),
372 lmm_variable_getvalue(action->variable) * delta);
374 if (((surf_action_t)action)->max_duration != NO_MAX_DURATION)
375 double_update(&(((surf_action_t)action)->max_duration), delta);
377 if ((((surf_action_t)action)->remains <= 0) &&
378 (lmm_get_variable_weight(action->variable) > 0)) {
379 ((surf_action_t)action)->finish = surf_get_clock();
380 surf_network_model->action_state_set((surf_action_t) action,
382 surf_action_lmm_heap_remove(net_action_heap,action);
383 } else if (((((surf_action_t)action)->max_duration != NO_MAX_DURATION)
384 && (((surf_action_t)action)->max_duration <= 0))) {
385 ((surf_action_t)action)->finish = surf_get_clock();
386 surf_network_model->action_state_set((surf_action_t) action,
388 surf_action_lmm_heap_remove(net_action_heap,action);
391 action->last_update = now;
395 static double net_share_resources_full(double now)
397 s_surf_action_lmm_t s_action;
398 surf_action_network_CM02_t action = NULL;
399 xbt_swag_t running_actions =
400 surf_network_model->states.running_action_set;
403 min = generic_maxmin_share_resources(running_actions,
404 xbt_swag_offset(s_action,
406 network_maxmin_system,
409 #define VARIABLE(action) (*((lmm_variable_t*)(((char *) (action)) + xbt_swag_offset(s_action, variable) )))
411 xbt_swag_foreach(action, running_actions) {
412 #ifdef HAVE_LATENCY_BOUND_TRACKING
413 if (lmm_is_variable_limited_by_latency(GENERIC_LMM_ACTION(action).variable)) {
414 action->latency_limited = 1;
416 action->latency_limited = 0;
419 if (action->latency > 0) {
420 min = (min < 0) ? action->latency : min(min, action->latency);
424 XBT_DEBUG("Min of share resources %f", min);
429 static double net_share_resources_lazy(double now)
431 surf_action_network_CM02_t action = NULL;
436 ("Before share resources, the size of modified actions set is %d",
437 xbt_swag_size(net_modified_set));
438 net_update_action_remaining_lazy(now);
440 lmm_solve(network_maxmin_system);
443 ("After share resources, The size of modified actions set is %d",
444 xbt_swag_size(net_modified_set));
446 xbt_swag_foreach(action, net_modified_set) {
447 int max_dur_flag = 0;
449 if (GENERIC_ACTION(action).state_set !=
450 surf_network_model->states.running_action_set)
453 /* bogus priority, skip it */
454 if (GENERIC_ACTION(action).priority <= 0)
458 value = lmm_variable_getvalue(GENERIC_LMM_ACTION(action).variable);
460 if (GENERIC_ACTION(action).remains > 0) {
461 value = GENERIC_ACTION(action).remains / value;
469 if ((GENERIC_ACTION(action).max_duration != NO_MAX_DURATION)
471 || GENERIC_ACTION(action).start +
472 GENERIC_ACTION(action).max_duration < min)) {
473 min = GENERIC_ACTION(action).start +
474 GENERIC_ACTION(action).max_duration;
478 XBT_DEBUG("Action(%p) Start %lf Finish %lf Max_duration %lf", action,
479 GENERIC_ACTION(action).start, now + value,
480 GENERIC_ACTION(action).max_duration);
483 surf_action_lmm_heap_remove(net_action_heap,(surf_action_lmm_t)action);
484 surf_action_lmm_heap_insert(net_action_heap,(surf_action_lmm_t)action, min, max_dur_flag ? MAX_DURATION : NORMAL);
485 XBT_DEBUG("Insert at heap action(%p) min %lf now %lf", action, min,
487 } else DIE_IMPOSSIBLE;
490 //hereafter must have already the min value for this resource model
491 if (xbt_heap_size(net_action_heap) > 0)
492 min = xbt_heap_maxkey(net_action_heap) - now;
496 XBT_DEBUG("The minimum with the HEAP %lf", min);
501 static void net_update_actions_state_full(double now, double delta)
504 surf_action_network_CM02_t action = NULL;
505 surf_action_network_CM02_t next_action = NULL;
506 xbt_swag_t running_actions =
507 surf_network_model->states.running_action_set;
509 xbt_swag_t failed_actions =
510 surf_network_model->states.failed_action_set;
513 xbt_swag_foreach_safe(action, next_action, running_actions) {
515 if (action->latency > 0) {
516 if (action->latency > deltap) {
517 double_update(&(action->latency), deltap);
520 double_update(&(deltap), action->latency);
521 action->latency = 0.0;
523 if ((action->latency == 0.0) && !(GENERIC_LMM_ACTION(action).suspended))
524 lmm_update_variable_weight(network_maxmin_system, GENERIC_LMM_ACTION(action).variable,
528 if (TRACE_is_enabled()) {
529 int n = lmm_get_number_of_cnst_from_var(network_maxmin_system, GENERIC_LMM_ACTION(action).variable);
531 for (i = 0; i < n; i++){
532 lmm_constraint_t constraint = lmm_get_cnst_from_var(network_maxmin_system,
533 GENERIC_LMM_ACTION(action).variable,
535 link_CM02_t link = lmm_constraint_id(constraint);
536 TRACE_surf_link_set_utilization(link->lmm_resource.generic_resource.name,
537 ((surf_action_t)action)->category,
538 lmm_variable_getvalue(GENERIC_LMM_ACTION(action).variable),
544 if (!lmm_get_number_of_cnst_from_var
545 (network_maxmin_system, GENERIC_LMM_ACTION(action).variable)) {
546 /* There is actually no link used, hence an infinite bandwidth.
547 * This happens often when using models like vivaldi.
548 * In such case, just make sure that the action completes immediately.
550 double_update(&(GENERIC_ACTION(action).remains),
551 GENERIC_ACTION(action).remains);
553 double_update(&(GENERIC_ACTION(action).remains),
554 lmm_variable_getvalue(GENERIC_LMM_ACTION(action).variable) * deltap);
555 if (((surf_action_t)action)->max_duration != NO_MAX_DURATION)
556 double_update(&(((surf_action_t)action)->max_duration), delta);
558 if ((GENERIC_ACTION(action).remains <= 0) &&
559 (lmm_get_variable_weight(GENERIC_LMM_ACTION(action).variable) > 0)) {
560 ((surf_action_t)action)->finish = surf_get_clock();
561 surf_network_model->action_state_set((surf_action_t) action,
566 } else if ((((surf_action_t)action)->max_duration != NO_MAX_DURATION)
567 && (((surf_action_t)action)->max_duration <= 0)) {
568 ((surf_action_t)action)->finish = surf_get_clock();
569 surf_network_model->action_state_set((surf_action_t) action,
579 static void net_update_actions_state_lazy(double now, double delta)
581 surf_action_network_CM02_t action = NULL;
583 while ((xbt_heap_size(net_action_heap) > 0)
584 && (double_equals(xbt_heap_maxkey(net_action_heap), now))) {
585 action = xbt_heap_pop(net_action_heap);
586 XBT_DEBUG("Action %p: finish", action);
587 GENERIC_ACTION(action).finish = surf_get_clock();
589 if (TRACE_is_enabled()) {
590 int n = lmm_get_number_of_cnst_from_var(network_maxmin_system, GENERIC_LMM_ACTION(action).variable);
592 for (i = 0; i < n; i++){
593 lmm_constraint_t constraint = lmm_get_cnst_from_var(network_maxmin_system,
594 GENERIC_LMM_ACTION(action).variable,
596 link_CM02_t link = lmm_constraint_id(constraint);
597 TRACE_surf_link_set_utilization(link->lmm_resource.generic_resource.name,
598 ((surf_action_t)action)->category,
599 lmm_variable_getvalue(GENERIC_LMM_ACTION(action).variable),
600 GENERIC_LMM_ACTION(action).last_update,
601 now - GENERIC_LMM_ACTION(action).last_update);
606 // if I am wearing a latency hat
607 if (GENERIC_LMM_ACTION(action).hat == LATENCY) {
608 lmm_update_variable_weight(network_maxmin_system, GENERIC_LMM_ACTION(action).variable,
610 surf_action_lmm_heap_remove(net_action_heap,(surf_action_lmm_t)action);
611 GENERIC_LMM_ACTION(action).last_update = surf_get_clock();
613 // if I am wearing a max_duration or normal hat
614 } else if (GENERIC_LMM_ACTION(action).hat == MAX_DURATION ||
615 GENERIC_LMM_ACTION(action).hat == NORMAL) {
616 // no need to communicate anymore
617 // assume that flows that reached max_duration have remaining of 0
618 GENERIC_ACTION(action).remains = 0;
619 ((surf_action_t)action)->finish = surf_get_clock();
620 surf_network_model->action_state_set((surf_action_t) action,
622 surf_action_lmm_heap_remove(net_action_heap,(surf_action_lmm_t)action);
628 static void net_update_resource_state(void *id,
629 tmgr_trace_event_t event_type,
630 double value, double date)
632 link_CM02_t nw_link = id;
633 /* printf("[" "%lg" "] Asking to update network card \"%s\" with value " */
634 /* "%lg" " for event %p\n", surf_get_clock(), nw_link->name, */
635 /* value, event_type); */
637 if (event_type == nw_link->lmm_resource.power.event) {
639 sg_weight_S_parameter / value - sg_weight_S_parameter /
640 (nw_link->lmm_resource.power.peak *
641 nw_link->lmm_resource.power.scale);
642 lmm_variable_t var = NULL;
643 lmm_element_t elem = NULL;
644 surf_action_network_CM02_t action = NULL;
646 nw_link->lmm_resource.power.peak = value;
647 lmm_update_constraint_bound(network_maxmin_system,
648 nw_link->lmm_resource.constraint,
649 sg_bandwidth_factor *
650 (nw_link->lmm_resource.power.peak *
651 nw_link->lmm_resource.power.scale));
653 TRACE_surf_link_set_bandwidth(date,
655 *) (((nw_link->lmm_resource).
656 generic_resource).name),
657 sg_bandwidth_factor *
658 (nw_link->lmm_resource.power.peak *
659 nw_link->lmm_resource.power.scale));
661 if (sg_weight_S_parameter > 0) {
662 while ((var = lmm_get_var_from_cnst
663 (network_maxmin_system, nw_link->lmm_resource.constraint,
665 action = lmm_variable_id(var);
666 action->weight += delta;
667 if (!(GENERIC_LMM_ACTION(action).suspended))
668 lmm_update_variable_weight(network_maxmin_system,
669 GENERIC_LMM_ACTION(action).variable, action->weight);
672 if (tmgr_trace_event_free(event_type))
673 nw_link->lmm_resource.power.event = NULL;
674 } else if (event_type == nw_link->lat_event) {
675 double delta = value - nw_link->lat_current;
676 lmm_variable_t var = NULL;
677 lmm_element_t elem = NULL;
678 surf_action_network_CM02_t action = NULL;
680 nw_link->lat_current = value;
681 while ((var = lmm_get_var_from_cnst
682 (network_maxmin_system, nw_link->lmm_resource.constraint,
684 action = lmm_variable_id(var);
685 action->lat_current += delta;
686 action->weight += delta;
687 if (action->rate < 0)
688 lmm_update_variable_bound(network_maxmin_system, GENERIC_LMM_ACTION(action).variable,
689 sg_tcp_gamma / (2.0 *
690 action->lat_current));
692 lmm_update_variable_bound(network_maxmin_system, GENERIC_LMM_ACTION(action).variable,
694 sg_tcp_gamma / (2.0 *
698 if (action->rate < sg_tcp_gamma / (2.0 * action->lat_current)) {
699 XBT_INFO("Flow is limited BYBANDWIDTH");
701 XBT_INFO("Flow is limited BYLATENCY, latency of flow is %f",
702 action->lat_current);
705 if (!(GENERIC_LMM_ACTION(action).suspended))
706 lmm_update_variable_weight(network_maxmin_system, GENERIC_LMM_ACTION(action).variable,
710 if (tmgr_trace_event_free(event_type))
711 nw_link->lat_event = NULL;
712 } else if (event_type == nw_link->lmm_resource.state_event) {
714 nw_link->lmm_resource.state_current = SURF_RESOURCE_ON;
716 lmm_constraint_t cnst = nw_link->lmm_resource.constraint;
717 lmm_variable_t var = NULL;
718 lmm_element_t elem = NULL;
720 nw_link->lmm_resource.state_current = SURF_RESOURCE_OFF;
721 while ((var = lmm_get_var_from_cnst
722 (network_maxmin_system, cnst, &elem))) {
723 surf_action_t action = lmm_variable_id(var);
725 if (surf_action_state_get(action) == SURF_ACTION_RUNNING ||
726 surf_action_state_get(action) == SURF_ACTION_READY) {
727 action->finish = date;
728 surf_network_model->action_state_set(action, SURF_ACTION_FAILED);
732 if (tmgr_trace_event_free(event_type))
733 nw_link->lmm_resource.state_event = NULL;
735 XBT_CRITICAL("Unknown event ! \n");
740 ("There were a resource state event, need to update actions related to the constraint (%p)",
741 nw_link->lmm_resource.constraint);
746 static surf_action_t net_communicate(network_element_t src,
747 network_element_t dst,
748 double size, double rate)
753 surf_action_network_CM02_t action = NULL;
754 double bandwidth_bound;
755 double latency = 0.0;
756 xbt_dynar_t back_route = NULL;
757 int constraints_per_variable = 0;
759 xbt_dynar_t route = xbt_dynar_new(global_routing->size_of_link, NULL);
761 XBT_IN("(%s,%s,%g,%g)", src->name, dst->name, size, rate);
763 routing_get_route_and_latency(src, dst, &route, &latency);
764 xbt_assert(!xbt_dynar_is_empty(route) || latency,
765 "You're trying to send data from %s to %s but there is no connection at all between these two hosts.",
766 src->name, dst->name);
768 xbt_dynar_foreach(route, i, link) {
769 if (link->lmm_resource.state_current == SURF_RESOURCE_OFF) {
774 if (sg_network_crosstraffic == 1) {
775 routing_get_route_and_latency(dst, src, &back_route, NULL);
776 xbt_dynar_foreach(back_route, i, link) {
777 if (link->lmm_resource.state_current == SURF_RESOURCE_OFF) {
785 surf_action_new(sizeof(s_surf_action_network_CM02_t), size,
786 surf_network_model, failed);
787 #ifdef HAVE_LATENCY_BOUND_TRACKING
788 action->latency_limited = 0;
790 action->weight = action->latency = latency;
792 xbt_swag_insert(action, ((surf_action_t)action)->state_set);
794 if (network_update_mechanism == UM_LAZY) {
795 GENERIC_LMM_ACTION(action).index_heap = -1;
796 GENERIC_LMM_ACTION(action).last_update = surf_get_clock();
799 bandwidth_bound = -1.0;
800 if (sg_weight_S_parameter > 0) {
801 xbt_dynar_foreach(route, i, link) {
803 sg_weight_S_parameter /
804 (link->lmm_resource.power.peak * link->lmm_resource.power.scale);
807 xbt_dynar_foreach(route, i, link) {
808 double bb = bandwidth_factor_callback(size) *
809 (link->lmm_resource.power.peak * link->lmm_resource.power.scale);
811 (bandwidth_bound < 0.0) ? bb : min(bandwidth_bound, bb);
814 action->lat_current = action->latency;
815 action->latency *= latency_factor_callback(size);
817 bandwidth_constraint_callback(action->rate, bandwidth_bound, size);
819 xbt_assert(!xbt_dynar_is_empty(route),
820 "Using a model with a gap (e.g., SMPI) with a platform without links (e.g. vivaldi)!!!");
822 link = *(link_CM02_t *) xbt_dynar_get_ptr(route, 0);
823 gap_append(size, link, action);
824 XBT_DEBUG("Comm %p: %s -> %s gap=%f (lat=%f)",
825 action, src->name, dst->name, action->sender.gap,
829 constraints_per_variable = xbt_dynar_length(route);
830 if (back_route != NULL)
831 constraints_per_variable += xbt_dynar_length(back_route);
833 if (action->latency > 0) {
834 GENERIC_LMM_ACTION(action).variable =
835 lmm_variable_new(network_maxmin_system, action, 0.0, -1.0,
836 constraints_per_variable);
837 if (network_update_mechanism == UM_LAZY) {
838 // add to the heap the event when the latency is payed
839 XBT_DEBUG("Added action (%p) one latency event at date %f", action,
840 action->latency + GENERIC_LMM_ACTION(action).last_update);
841 surf_action_lmm_heap_insert(net_action_heap,(surf_action_lmm_t)action, action->latency + GENERIC_LMM_ACTION(action).last_update,
842 xbt_dynar_is_empty(route) ? NORMAL : LATENCY);
845 GENERIC_LMM_ACTION(action).variable =
846 lmm_variable_new(network_maxmin_system, action, 1.0, -1.0,
847 constraints_per_variable);
849 if (action->rate < 0) {
850 lmm_update_variable_bound(network_maxmin_system, GENERIC_LMM_ACTION(action).variable,
851 (action->lat_current > 0) ?
852 sg_tcp_gamma / (2.0 *
853 action->lat_current) : -1.0);
855 lmm_update_variable_bound(network_maxmin_system, GENERIC_LMM_ACTION(action).variable,
856 (action->lat_current > 0) ?
858 sg_tcp_gamma / (2.0 *
859 action->lat_current))
863 xbt_dynar_foreach(route, i, link) {
864 lmm_expand(network_maxmin_system, link->lmm_resource.constraint,
865 GENERIC_LMM_ACTION(action).variable, 1.0);
868 if (sg_network_crosstraffic == 1) {
869 XBT_DEBUG("Fullduplex active adding backward flow using 5%%");
870 xbt_dynar_foreach(back_route, i, link) {
871 lmm_expand(network_maxmin_system, link->lmm_resource.constraint,
872 GENERIC_LMM_ACTION(action).variable, .05);
876 xbt_dynar_free(&route);
879 return (surf_action_t) action;
882 static xbt_dynar_t net_get_route(void *src, void *dst)
884 xbt_dynar_t route = NULL;
885 routing_get_route_and_latency(src, dst, &route, NULL);
889 static double net_get_link_bandwidth(const void *link)
891 surf_resource_lmm_t lmm = (surf_resource_lmm_t) link;
892 return lmm->power.peak * lmm->power.scale;
895 static double net_get_link_latency(const void *link)
897 return ((link_CM02_t) link)->lat_current;
900 static int net_link_shared(const void *link)
903 lmm_constraint_is_shared(((surf_resource_lmm_t) link)->constraint);
906 static void net_action_suspend(surf_action_t action)
908 ((surf_action_network_CM02_t) action)->generic_lmm_action.suspended = 1;
909 lmm_update_variable_weight(network_maxmin_system,
910 ((surf_action_network_CM02_t)
911 action)->generic_lmm_action.variable, 0.0);
913 if (network_update_mechanism == UM_LAZY) // remove action from the heap
914 surf_action_lmm_heap_remove(net_action_heap,(surf_action_lmm_t)action);
917 static void net_action_resume(surf_action_t action)
919 if (((surf_action_network_CM02_t) action)->generic_lmm_action.suspended) {
920 lmm_update_variable_weight(network_maxmin_system,
921 ((surf_action_network_CM02_t)
922 action)->generic_lmm_action.variable,
923 ((surf_action_network_CM02_t)
925 ((surf_action_network_CM02_t) action)->generic_lmm_action.suspended = 0;
926 if (network_update_mechanism == UM_LAZY) // remove action from the heap
927 surf_action_lmm_heap_remove(net_action_heap,(surf_action_lmm_t)action);
931 static int net_action_is_suspended(surf_action_t action)
933 return ((surf_action_network_CM02_t) action)->generic_lmm_action.suspended;
936 void net_action_set_max_duration(surf_action_t action, double duration)
938 action->max_duration = duration;
939 if (network_update_mechanism == UM_LAZY) // remove action from the heap
940 surf_action_lmm_heap_remove(net_action_heap,(surf_action_lmm_t)action);
944 static void net_action_set_category(surf_action_t action,
945 const char *category)
947 action->category = xbt_strdup(category);
951 static void net_finalize(void)
953 surf_model_exit(surf_network_model);
954 surf_network_model = NULL;
956 lmm_system_free(network_maxmin_system);
957 network_maxmin_system = NULL;
959 if (network_update_mechanism == UM_LAZY) {
960 xbt_heap_free(net_action_heap);
961 xbt_swag_free(net_modified_set);
965 xbt_dynar_free(&smpi_bw_factor);
967 xbt_dynar_free(&smpi_lat_factor);
970 static void smpi_gap_append(double size, const link_CM02_t link,
971 surf_action_network_CM02_t action)
973 const char *src = link->lmm_resource.generic_resource.name;
975 surf_action_network_CM02_t last_action;
978 if (sg_sender_gap > 0.0) {
980 gap_lookup = xbt_dict_new();
982 fifo = (xbt_fifo_t) xbt_dict_get_or_null(gap_lookup, src);
983 action->sender.gap = 0.0;
984 if (fifo && xbt_fifo_size(fifo) > 0) {
985 /* Compute gap from last send */
987 (surf_action_network_CM02_t)
988 xbt_fifo_get_item_content(xbt_fifo_get_last_item(fifo));
989 bw = net_get_link_bandwidth(link);
991 last_action->sender.gap + max(sg_sender_gap,
992 last_action->sender.size / bw);
993 action->latency += action->sender.gap;
995 /* Append action as last send */
996 action->sender.link_name = link->lmm_resource.generic_resource.name;
998 (xbt_fifo_t) xbt_dict_get_or_null(gap_lookup,
999 action->sender.link_name);
1001 fifo = xbt_fifo_new();
1002 xbt_dict_set(gap_lookup, action->sender.link_name, fifo, NULL);
1004 action->sender.fifo_item = xbt_fifo_push(fifo, action);
1005 action->sender.size = size;
1009 static void smpi_gap_remove(surf_action_network_CM02_t action)
1014 if (sg_sender_gap > 0.0 && action->sender.link_name
1015 && action->sender.fifo_item) {
1017 (xbt_fifo_t) xbt_dict_get_or_null(gap_lookup,
1018 action->sender.link_name);
1019 xbt_fifo_remove_item(fifo, action->sender.fifo_item);
1020 size = xbt_fifo_size(fifo);
1022 xbt_fifo_free(fifo);
1023 xbt_dict_remove(gap_lookup, action->sender.link_name);
1024 size = xbt_dict_length(gap_lookup);
1026 xbt_dict_free(&gap_lookup);
1032 static void surf_network_model_init_internal(void)
1034 s_surf_action_network_CM02_t comm;
1035 surf_network_model = surf_model_init();
1037 surf_network_model->name = "network";
1038 surf_network_model->action_unref = net_action_unref;
1039 surf_network_model->action_cancel = net_action_cancel;
1040 surf_network_model->action_recycle = net_action_recycle;
1041 surf_network_model->get_remains = net_action_get_remains;
1042 #ifdef HAVE_LATENCY_BOUND_TRACKING
1043 surf_network_model->get_latency_limited = net_get_link_latency_limited;
1046 surf_network_model->set_category = net_action_set_category;
1049 surf_network_model->model_private->resource_used = net_resource_used;
1050 if (network_update_mechanism == UM_LAZY) {
1051 surf_network_model->model_private->share_resources =
1052 net_share_resources_lazy;
1053 surf_network_model->model_private->update_actions_state =
1054 net_update_actions_state_lazy;
1055 } else if (network_update_mechanism == UM_FULL) {
1056 surf_network_model->model_private->share_resources =
1057 net_share_resources_full;
1058 surf_network_model->model_private->update_actions_state =
1059 net_update_actions_state_full;
1062 surf_network_model->model_private->update_resource_state =
1063 net_update_resource_state;
1064 surf_network_model->model_private->finalize = net_finalize;
1066 surf_network_model->suspend = net_action_suspend;
1067 surf_network_model->resume = net_action_resume;
1068 surf_network_model->is_suspended = net_action_is_suspended;
1069 surf_cpu_model->set_max_duration = net_action_set_max_duration;
1071 surf_network_model->extension.network.communicate = net_communicate;
1072 surf_network_model->extension.network.get_route = net_get_route;
1073 surf_network_model->extension.network.get_link_bandwidth =
1074 net_get_link_bandwidth;
1075 surf_network_model->extension.network.get_link_latency =
1076 net_get_link_latency;
1077 surf_network_model->extension.network.link_shared = net_link_shared;
1078 surf_network_model->extension.network.add_traces = net_add_traces;
1079 surf_network_model->extension.network.create_resource =
1080 net_create_resource;
1082 if (!network_maxmin_system)
1083 network_maxmin_system = lmm_system_new(net_selective_update);
1085 routing_model_create(sizeof(link_CM02_t),
1086 net_create_resource("__loopback__",
1087 498000000, NULL, 0.000015, NULL,
1088 SURF_RESOURCE_ON, NULL,
1089 SURF_LINK_FATPIPE, NULL));
1091 if (network_update_mechanism == UM_LAZY) {
1092 net_action_heap = xbt_heap_new(8, NULL);
1093 xbt_heap_set_update_callback(net_action_heap,
1094 surf_action_lmm_update_index_heap);
1096 xbt_swag_new(xbt_swag_offset(comm, generic_lmm_action.action_list_hookup));
1097 network_maxmin_system->keep_track = net_modified_set;
1101 static void set_update_mechanism(void)
1103 char *optim = xbt_cfg_get_string(_surf_cfg_set, "network/optim");
1105 xbt_cfg_get_int(_surf_cfg_set, "network/maxmin_selective_update");
1107 if (!strcmp(optim, "Full")) {
1108 network_update_mechanism = UM_FULL;
1109 net_selective_update = select;
1110 } else if (!strcmp(optim, "Lazy")) {
1111 network_update_mechanism = UM_LAZY;
1112 net_selective_update = 1;
1113 xbt_assert((select == 1)
1115 (xbt_cfg_is_default_value
1116 (_surf_cfg_set, "network/maxmin_selective_update")),
1117 "Disabling selective update while using the lazy update mechanism is dumb!");
1119 xbt_die("Unsupported optimization (%s) for this model", optim);
1123 /************************************************************************/
1124 /* New model based on LV08 and experimental results of MPI ping-pongs */
1125 /************************************************************************/
1126 /* @Inproceedings{smpi_ipdps, */
1127 /* author={Pierre-Nicolas Clauss and Mark Stillwell and Stéphane Genaud and Frédéric Suter and Henri Casanova and Martin Quinson}, */
1128 /* title={Single Node On-Line Simulation of {MPI} Applications with SMPI}, */
1129 /* booktitle={25th IEEE International Parallel and Distributed Processing Symposium (IPDPS'11)}, */
1130 /* address={Anchorage (Alaska) USA}, */
1134 void surf_network_model_init_SMPI(void)
1137 if (surf_network_model)
1139 set_update_mechanism();
1141 surf_network_model_init_internal();
1142 latency_factor_callback = &smpi_latency_factor;
1143 bandwidth_factor_callback = &smpi_bandwidth_factor;
1144 bandwidth_constraint_callback = &smpi_bandwidth_constraint;
1145 gap_append = &smpi_gap_append;
1146 gap_remove = &smpi_gap_remove;
1147 net_define_callbacks();
1148 xbt_dynar_push(model_list, &surf_network_model);
1149 network_solve = lmm_solve;
1151 xbt_cfg_setdefault_double(_surf_cfg_set, "network/sender_gap", 10e-6);
1152 xbt_cfg_setdefault_double(_surf_cfg_set, "network/weight_S", 8775);
1155 /************************************************************************/
1156 /* New model based on optimizations discussed during Pedro Velho's thesis*/
1157 /************************************************************************/
1158 /* @techreport{VELHO:2011:HAL-00646896:1, */
1159 /* url = {http://hal.inria.fr/hal-00646896/en/}, */
1160 /* title = {{Flow-level network models: have we reached the limits?}}, */
1161 /* author = {Velho, Pedro and Schnorr, Lucas and Casanova, Henri and Legrand, Arnaud}, */
1162 /* type = {Rapport de recherche}, */
1163 /* institution = {INRIA}, */
1164 /* number = {RR-7821}, */
1165 /* year = {2011}, */
1167 /* pdf = {http://hal.inria.fr/hal-00646896/PDF/rr-validity.pdf}, */
1169 void surf_network_model_init_LegrandVelho(void)
1171 if (surf_network_model)
1174 set_update_mechanism();
1176 surf_network_model_init_internal();
1177 net_define_callbacks();
1178 xbt_dynar_push(model_list, &surf_network_model);
1179 network_solve = lmm_solve;
1181 xbt_cfg_setdefault_double(_surf_cfg_set, "network/latency_factor",
1183 xbt_cfg_setdefault_double(_surf_cfg_set, "network/bandwidth_factor",
1185 xbt_cfg_setdefault_double(_surf_cfg_set, "network/weight_S", 20537);
1188 /***************************************************************************/
1189 /* The nice TCP sharing model designed by Loris Marchal and Henri Casanova */
1190 /***************************************************************************/
1191 /* @TechReport{ rr-lip2002-40, */
1192 /* author = {Henri Casanova and Loris Marchal}, */
1193 /* institution = {LIP}, */
1194 /* title = {A Network Model for Simulation of Grid Application}, */
1195 /* number = {2002-40}, */
1196 /* month = {oct}, */
1199 void surf_network_model_init_CM02(void)
1202 if (surf_network_model)
1205 set_update_mechanism();
1206 surf_network_model_init_internal();
1207 net_define_callbacks();
1208 xbt_dynar_push(model_list, &surf_network_model);
1209 network_solve = lmm_solve;
1211 xbt_cfg_setdefault_double(_surf_cfg_set, "network/latency_factor", 1.0);
1212 xbt_cfg_setdefault_double(_surf_cfg_set, "network/bandwidth_factor",
1214 xbt_cfg_setdefault_double(_surf_cfg_set, "network/weight_S", 0.0);
1217 /***************************************************************************/
1218 /* The models from Steven H. Low */
1219 /***************************************************************************/
1220 /* @article{Low03, */
1221 /* author={Steven H. Low}, */
1222 /* title={A Duality Model of {TCP} and Queue Management Algorithms}, */
1224 /* journal={{IEEE/ACM} Transactions on Networking}, */
1225 /* volume={11}, number={4}, */
1227 void surf_network_model_init_Reno(void)
1229 if (surf_network_model)
1232 set_update_mechanism();
1233 surf_network_model_init_internal();
1234 net_define_callbacks();
1236 xbt_dynar_push(model_list, &surf_network_model);
1237 lmm_set_default_protocol_function(func_reno_f, func_reno_fp,
1239 network_solve = lagrange_solve;
1241 xbt_cfg_setdefault_double(_surf_cfg_set, "network/latency_factor", 10.4);
1242 xbt_cfg_setdefault_double(_surf_cfg_set, "network/bandwidth_factor",
1244 xbt_cfg_setdefault_double(_surf_cfg_set, "network/weight_S", 8775);
1248 void surf_network_model_init_Reno2(void)
1250 if (surf_network_model)
1253 set_update_mechanism();
1254 surf_network_model_init_internal();
1255 net_define_callbacks();
1257 xbt_dynar_push(model_list, &surf_network_model);
1258 lmm_set_default_protocol_function(func_reno2_f, func_reno2_fp,
1260 network_solve = lagrange_solve;
1262 xbt_cfg_setdefault_double(_surf_cfg_set, "network/latency_factor", 10.4);
1263 xbt_cfg_setdefault_double(_surf_cfg_set, "network/bandwidth_factor",
1265 xbt_cfg_setdefault_double(_surf_cfg_set, "network/weight_S_parameter",
1269 void surf_network_model_init_Vegas(void)
1271 if (surf_network_model)
1274 set_update_mechanism();
1275 surf_network_model_init_internal();
1276 net_define_callbacks();
1278 xbt_dynar_push(model_list, &surf_network_model);
1279 lmm_set_default_protocol_function(func_vegas_f, func_vegas_fp,
1281 network_solve = lagrange_solve;
1283 xbt_cfg_setdefault_double(_surf_cfg_set, "network/latency_factor", 10.4);
1284 xbt_cfg_setdefault_double(_surf_cfg_set, "network/bandwidth_factor",
1286 xbt_cfg_setdefault_double(_surf_cfg_set, "network/weight_S", 8775);