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"
27 #define GENERIC_ACTION(action) action->generic_action
29 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(surf_network, surf,
30 "Logging specific to the SURF network module");
32 surf_model_t surf_network_model = NULL;
33 static lmm_system_t network_maxmin_system = NULL;
34 static void (*network_solve) (lmm_system_t) = NULL;
36 xbt_dynar_t smpi_bw_factor = NULL;
37 xbt_dynar_t smpi_lat_factor = NULL;
39 typedef struct s_smpi_factor *smpi_factor_t;
40 typedef struct s_smpi_factor {
45 double sg_sender_gap = 0.0;
46 double sg_latency_factor = 1.0; /* default value; can be set by model or from command line */
47 double sg_bandwidth_factor = 1.0; /* default value; can be set by model or from command line */
48 double sg_weight_S_parameter = 0.0; /* default value; can be set by model or from command line */
50 double sg_tcp_gamma = 0.0;
51 int sg_network_crosstraffic = 0;
53 xbt_dict_t gap_lookup = NULL;
55 e_UM_t network_update_mechanism = UM_UNDEFINED;
56 static int net_selective_update = 0;
58 static int net_action_is_suspended(surf_action_t action);
59 static void update_action_remaining(double now);
61 static xbt_swag_t net_modified_set = NULL;
62 static xbt_heap_t net_action_heap = NULL;
64 /* added to manage the communication action's heap */
65 static void net_action_update_index_heap(void *action, int i)
67 ((surf_action_network_CM02_t) action)->index_heap = i;
70 /* insert action on heap using a given key and a hat (heap_action_type)
71 * a hat can be of three types for communications:
73 * NORMAL = this is a normal heap entry stating the date to finish transmitting
74 * LATENCY = this is a heap entry to warn us when the latency is payed
75 * MAX_DURATION =this is a heap entry to warn us when the max_duration limit is reached
77 static void heap_insert(surf_action_network_CM02_t action, double key, enum heap_action_type hat){
79 xbt_heap_push(net_action_heap, action, key);
82 static void heap_remove(surf_action_network_CM02_t action){
84 if(((surf_action_network_CM02_t) action)->index_heap >= 0){
85 xbt_heap_remove(net_action_heap,action->index_heap);
89 /******************************************************************************/
90 /* Factors callbacks */
91 /******************************************************************************/
92 static double constant_latency_factor(double size)
94 return sg_latency_factor;
97 static double constant_bandwidth_factor(double size)
99 return sg_bandwidth_factor;
102 static double constant_bandwidth_constraint(double rate, double bound,
108 /**********************/
110 /**********************/
111 static xbt_dynar_t parse_factor(const char *smpi_coef_string)
114 unsigned int iter = 0;
115 s_smpi_factor_t fact;
116 xbt_dynar_t smpi_factor, radical_elements, radical_elements2 = NULL;
118 smpi_factor = xbt_dynar_new(sizeof(s_smpi_factor_t), NULL);
119 radical_elements = xbt_str_split(smpi_coef_string, ";");
120 xbt_dynar_foreach(radical_elements, iter, value) {
122 radical_elements2 = xbt_str_split(value, ":");
123 if(xbt_dynar_length(radical_elements2) != 2)
124 xbt_die("Malformed radical for smpi factor!");
125 fact.factor = atol(xbt_dynar_get_as(radical_elements2,0,char*));
126 fact.value = atof(xbt_dynar_get_as(radical_elements2,1,char*));
127 xbt_dynar_push_as(smpi_factor,s_smpi_factor_t,fact);
128 XBT_DEBUG("smpi_factor:\t%ld : %f",fact.factor,fact.value);
129 xbt_dynar_free(&radical_elements2);
131 xbt_dynar_free(&radical_elements);
135 static double smpi_bandwidth_factor(double size)
138 smpi_bw_factor = parse_factor( xbt_cfg_get_string(_surf_cfg_set,"smpi/bw_factor") );
140 unsigned int iter = 0;
141 s_smpi_factor_t fact;
142 xbt_dynar_foreach(smpi_bw_factor, iter, fact) {
143 if(size >= fact.factor){
144 XBT_DEBUG("%lf >= %ld return %f",size,fact.factor,fact.value);
152 static double smpi_latency_factor(double size)
155 smpi_lat_factor = parse_factor( xbt_cfg_get_string(_surf_cfg_set,"smpi/lat_factor") );
157 unsigned int iter = 0;
158 s_smpi_factor_t fact;
159 xbt_dynar_foreach(smpi_lat_factor, iter, fact) {
160 if(size >= fact.factor){
161 XBT_DEBUG("%lf >= %ld return %f",size,fact.factor,fact.value);
168 /**--------- <copy/paste C code snippet in surf/network.c> -----------*/
170 static double smpi_bandwidth_constraint(double rate, double bound,
173 return rate < 0 ? bound : min(bound, rate * smpi_bandwidth_factor(size));
176 static double (*latency_factor_callback) (double) =
177 &constant_latency_factor;
178 static double (*bandwidth_factor_callback) (double) =
179 &constant_bandwidth_factor;
180 static double (*bandwidth_constraint_callback) (double, double, double) =
181 &constant_bandwidth_constraint;
183 static void (*gap_append) (double, const link_CM02_t, surf_action_network_CM02_t) = NULL;
184 static void (*gap_remove) (surf_action_network_CM02_t) = NULL;
186 static void* net_create_resource(const char *name,
188 tmgr_trace_t bw_trace,
190 tmgr_trace_t lat_trace,
191 e_surf_resource_state_t
193 tmgr_trace_t state_trace,
194 e_surf_link_sharing_policy_t
195 policy, xbt_dict_t properties)
197 link_CM02_t nw_link = (link_CM02_t)
198 surf_resource_lmm_new(sizeof(s_link_CM02_t),
199 surf_network_model, name, properties,
200 network_maxmin_system,
201 sg_bandwidth_factor * bw_initial,
203 state_initial, state_trace,
204 bw_initial, bw_trace);
206 xbt_assert(!xbt_lib_get_or_null(link_lib, name, SURF_LINK_LEVEL),
207 "Link '%s' declared several times in the platform file.",
210 nw_link->lat_current = lat_initial;
213 tmgr_history_add_trace(history, lat_trace, 0.0, 0, nw_link);
215 if (policy == SURF_LINK_FATPIPE)
216 lmm_constraint_shared(nw_link->lmm_resource.constraint);
218 xbt_lib_set(link_lib, name, SURF_LINK_LEVEL, nw_link);
223 static void net_parse_link_init(sg_platf_link_cbarg_t link)
225 if(link->policy == SURF_LINK_FULLDUPLEX){
227 link_id = bprintf("%s_UP", link->id);
228 net_create_resource(link_id,
230 link->bandwidth_trace,
238 link_id = bprintf("%s_DOWN", link->id);
239 net_create_resource(link_id,
241 link->bandwidth_trace,
251 net_create_resource(link->id,
253 link->bandwidth_trace,
263 static void net_add_traces(void)
265 xbt_dict_cursor_t cursor = NULL;
266 char *trace_name, *elm;
268 static int called = 0;
273 /* connect all traces relative to network */
274 xbt_dict_foreach(trace_connect_list_link_avail, cursor, trace_name, elm) {
275 tmgr_trace_t trace = xbt_dict_get_or_null(traces_set_list, trace_name);
277 xbt_lib_get_or_null(link_lib, elm, SURF_LINK_LEVEL);
279 xbt_assert(link, "Cannot connect trace %s to link %s: link undefined",
282 "Cannot connect trace %s to link %s: trace undefined",
285 link->lmm_resource.state_event =
286 tmgr_history_add_trace(history, trace, 0.0, 0, link);
289 xbt_dict_foreach(trace_connect_list_bandwidth, cursor, trace_name, elm) {
290 tmgr_trace_t trace = xbt_dict_get_or_null(traces_set_list, trace_name);
292 xbt_lib_get_or_null(link_lib, elm, SURF_LINK_LEVEL);
294 xbt_assert(link, "Cannot connect trace %s to link %s: link undefined",
297 "Cannot connect trace %s to link %s: trace undefined",
300 link->lmm_resource.power.event =
301 tmgr_history_add_trace(history, trace, 0.0, 0, link);
304 xbt_dict_foreach(trace_connect_list_latency, cursor, trace_name, elm) {
305 tmgr_trace_t trace = xbt_dict_get_or_null(traces_set_list, trace_name);
307 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,
329 ((surf_resource_lmm_t)
330 resource_id)->constraint);
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_network_CM02_t) action)->variable){
339 lmm_variable_free(network_maxmin_system,
340 ((surf_action_network_CM02_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(surf_get_clock());
385 return action->remains;
388 static void update_action_remaining(double now){
389 surf_action_network_CM02_t action = NULL;
392 xbt_swag_foreach(action, net_modified_set) {
394 if(action->suspended != 0){
398 delta = now - action->last_update;
400 double_update(&(action->generic_action.remains),
401 lmm_variable_getvalue(action->variable) * delta);
403 if (action->generic_action.max_duration != NO_MAX_DURATION)
404 double_update(&(action->generic_action.max_duration), delta);
406 if ((action->generic_action.remains <= 0) &&
407 (lmm_get_variable_weight(action->variable) > 0)) {
408 action->generic_action.finish = surf_get_clock();
409 surf_network_model->action_state_set((surf_action_t) action,
412 } else if ((action->generic_action.max_duration != NO_MAX_DURATION)
413 && (action->generic_action.max_duration <= 0)) {
414 action->generic_action.finish = surf_get_clock();
415 surf_network_model->action_state_set((surf_action_t) action,
420 action->last_update = now;
424 static double net_share_resources_full(double now)
426 s_surf_action_network_CM02_t s_action;
427 surf_action_network_CM02_t action = NULL;
428 xbt_swag_t running_actions =
429 surf_network_model->states.running_action_set;
432 min = generic_maxmin_share_resources(running_actions,
433 xbt_swag_offset(s_action,
435 network_maxmin_system,
438 #define VARIABLE(action) (*((lmm_variable_t*)(((char *) (action)) + xbt_swag_offset(s_action, variable) )))
440 xbt_swag_foreach(action, running_actions) {
441 #ifdef HAVE_LATENCY_BOUND_TRACKING
442 if (lmm_is_variable_limited_by_latency(action->variable)) {
443 (action->generic_action).latency_limited = 1;
445 (action->generic_action).latency_limited = 0;
448 if (action->latency > 0) {
449 min = (min<0)?action->latency:min(min,action->latency);
453 XBT_DEBUG("Min of share resources %f", min);
458 static double net_share_resources_lazy(double now)
460 surf_action_network_CM02_t action = NULL;
464 XBT_DEBUG("Before share resources, the size of modified actions set is %d", xbt_swag_size(net_modified_set));
465 update_action_remaining(now);
467 lmm_solve(network_maxmin_system);
469 XBT_DEBUG("After share resources, The size of modified actions set is %d", xbt_swag_size(net_modified_set));
471 xbt_swag_foreach(action, net_modified_set) {
472 int max_dur_flag = 0;
474 if (GENERIC_ACTION(action).state_set != surf_network_model->states.running_action_set){
478 /* bogus priority, skip it */
479 if (GENERIC_ACTION(action).priority <= 0){
484 value = lmm_variable_getvalue(action->variable);
486 if (GENERIC_ACTION(action).remains > 0) {
487 value = GENERIC_ACTION(action).remains / value;
495 if ((GENERIC_ACTION(action).max_duration != NO_MAX_DURATION)
497 || GENERIC_ACTION(action).start +
498 GENERIC_ACTION(action).max_duration < min)){
499 min = GENERIC_ACTION(action).start +
500 GENERIC_ACTION(action).max_duration;
504 XBT_DEBUG("Action(%p) Start %lf Finish %lf Max_duration %lf", action,
505 GENERIC_ACTION(action).start, now + value,
506 GENERIC_ACTION(action).max_duration);
508 if (action->index_heap >= 0) {
509 heap_remove((surf_action_network_CM02_t) action);
513 heap_insert((surf_action_network_CM02_t) action, min, max_dur_flag?MAX_DURATION:NORMAL);
514 XBT_DEBUG("Insert at heap action(%p) min %lf now %lf", action, min, now);
518 //hereafter must have already the min value for this resource model
519 if(xbt_heap_size(net_action_heap) > 0 ){
520 min = xbt_heap_maxkey(net_action_heap) - now ;
525 XBT_DEBUG("The minimum with the HEAP %lf", min);
530 static void net_update_actions_state_full(double now, double delta)
533 surf_action_network_CM02_t action = NULL;
534 surf_action_network_CM02_t next_action = NULL;
535 xbt_swag_t running_actions =
536 surf_network_model->states.running_action_set;
538 xbt_swag_t failed_actions =
539 surf_network_model->states.failed_action_set;
542 xbt_swag_foreach_safe(action, next_action, running_actions) {
544 if (action->latency > 0) {
545 if (action->latency > deltap) {
546 double_update(&(action->latency), deltap);
549 double_update(&(deltap), action->latency);
550 action->latency = 0.0;
552 if ((action->latency == 0.0) && !(action->suspended))
553 lmm_update_variable_weight(network_maxmin_system, action->variable,
557 if (TRACE_is_enabled()) {
558 xbt_dynar_t route=NULL;
559 routing_get_route_and_latency(action->src_name, action->dst_name,&route,NULL);
562 xbt_dynar_foreach(route, i, link) {
563 TRACE_surf_link_set_utilization(link->lmm_resource.generic_resource.name,
564 action->generic_action.data,
565 (surf_action_t) action,
566 lmm_variable_getvalue
567 (action->variable), now - delta,
572 if(!lmm_get_number_of_cnst_from_var(network_maxmin_system, action->variable)) {
573 /* There is actually no link used, hence an infinite bandwidth.
574 * This happens often when using models like vivaldi.
575 * In such case, just make sure that the action completes immediately.
577 double_update(&(action->generic_action.remains),
578 action->generic_action.remains);
580 double_update(&(action->generic_action.remains),
581 lmm_variable_getvalue(action->variable) * deltap);
582 if (action->generic_action.max_duration != NO_MAX_DURATION)
583 double_update(&(action->generic_action.max_duration), delta);
585 if ((action->generic_action.remains <= 0) &&
586 (lmm_get_variable_weight(action->variable) > 0)) {
587 action->generic_action.finish = surf_get_clock();
588 surf_network_model->action_state_set((surf_action_t) action,
591 if(gap_remove) gap_remove(action);
592 } else if ((action->generic_action.max_duration != NO_MAX_DURATION)
593 && (action->generic_action.max_duration <= 0)) {
594 action->generic_action.finish = surf_get_clock();
595 surf_network_model->action_state_set((surf_action_t) action,
597 if(gap_remove) gap_remove(action);
604 static void net_update_actions_state_lazy(double now, double delta)
606 surf_action_network_CM02_t action = NULL;
608 while ((xbt_heap_size(net_action_heap) > 0)
609 && (double_equals(xbt_heap_maxkey(net_action_heap), now))) {
610 action = xbt_heap_pop(net_action_heap);
611 XBT_DEBUG("Action %p: finish", action);
612 GENERIC_ACTION(action).finish = surf_get_clock();
614 // if I am wearing a latency hat
615 if( action->hat == LATENCY){
616 lmm_update_variable_weight(network_maxmin_system, action->variable,
619 action->last_update = surf_get_clock();
621 // if I am wearing a max_duration or normal hat
622 }else if( action->hat == MAX_DURATION || action->hat == NORMAL ){
623 // no need to communicate anymore
624 // assume that flows that reached max_duration have remaining of 0
625 GENERIC_ACTION(action).remains = 0;
626 action->generic_action.finish = surf_get_clock();
627 surf_network_model->action_state_set((surf_action_t) action,
635 static void net_update_resource_state(void *id,
636 tmgr_trace_event_t event_type,
637 double value, double date)
639 link_CM02_t nw_link = id;
640 /* printf("[" "%lg" "] Asking to update network card \"%s\" with value " */
641 /* "%lg" " for event %p\n", surf_get_clock(), nw_link->name, */
642 /* value, event_type); */
644 if (event_type == nw_link->lmm_resource.power.event) {
646 sg_weight_S_parameter / value - sg_weight_S_parameter /
647 (nw_link->lmm_resource.power.peak *
648 nw_link->lmm_resource.power.scale);
649 lmm_variable_t var = NULL;
650 lmm_element_t elem = NULL;
651 surf_action_network_CM02_t action = NULL;
653 nw_link->lmm_resource.power.peak = value;
654 lmm_update_constraint_bound(network_maxmin_system,
655 nw_link->lmm_resource.constraint,
656 sg_bandwidth_factor *
657 (nw_link->lmm_resource.power.peak *
658 nw_link->lmm_resource.power.scale));
660 TRACE_surf_link_set_bandwidth(date, (char *)(((nw_link->lmm_resource).generic_resource).name),
661 sg_bandwidth_factor *
662 (nw_link->lmm_resource.power.peak *
663 nw_link->lmm_resource.power.scale));
665 if (sg_weight_S_parameter > 0) {
666 while ((var = lmm_get_var_from_cnst
667 (network_maxmin_system, nw_link->lmm_resource.constraint,
669 action = lmm_variable_id(var);
670 action->weight += delta;
671 if (!(action->suspended))
672 lmm_update_variable_weight(network_maxmin_system,
673 action->variable, action->weight);
676 if (tmgr_trace_event_free(event_type))
677 nw_link->lmm_resource.power.event = NULL;
678 } else if (event_type == nw_link->lat_event) {
679 double delta = value - nw_link->lat_current;
680 lmm_variable_t var = NULL;
681 lmm_element_t elem = NULL;
682 surf_action_network_CM02_t action = NULL;
684 nw_link->lat_current = value;
685 while ((var = lmm_get_var_from_cnst
686 (network_maxmin_system, nw_link->lmm_resource.constraint,
688 action = lmm_variable_id(var);
689 action->lat_current += delta;
690 action->weight += delta;
691 if (action->rate < 0)
692 lmm_update_variable_bound(network_maxmin_system, action->variable,
693 sg_tcp_gamma / (2.0 *
694 action->lat_current));
696 lmm_update_variable_bound(network_maxmin_system, action->variable,
698 sg_tcp_gamma / (2.0 *
699 action->lat_current)));
701 if (action->rate < sg_tcp_gamma / (2.0 * action->lat_current)) {
702 XBT_INFO("Flow is limited BYBANDWIDTH");
704 XBT_INFO("Flow is limited BYLATENCY, latency of flow is %f",
705 action->lat_current);
708 if (!(action->suspended))
709 lmm_update_variable_weight(network_maxmin_system, action->variable,
713 if (tmgr_trace_event_free(event_type))
714 nw_link->lat_event = NULL;
715 } else if (event_type == nw_link->lmm_resource.state_event) {
717 nw_link->lmm_resource.state_current = SURF_RESOURCE_ON;
719 lmm_constraint_t cnst = nw_link->lmm_resource.constraint;
720 lmm_variable_t var = NULL;
721 lmm_element_t elem = NULL;
723 nw_link->lmm_resource.state_current = SURF_RESOURCE_OFF;
724 while ((var = lmm_get_var_from_cnst
725 (network_maxmin_system, cnst, &elem))) {
726 surf_action_t action = lmm_variable_id(var);
728 if (surf_action_state_get(action) == SURF_ACTION_RUNNING ||
729 surf_action_state_get(action) == SURF_ACTION_READY) {
730 action->finish = date;
731 surf_network_model->action_state_set(action, SURF_ACTION_FAILED);
735 if (tmgr_trace_event_free(event_type))
736 nw_link->lmm_resource.state_event = NULL;
738 XBT_CRITICAL("Unknown event ! \n");
742 XBT_DEBUG("There were a resource state event, need to update actions related to the constraint (%p)", nw_link->lmm_resource.constraint);
747 static surf_action_t net_communicate(const char *src_name,
748 const char *dst_name, double size,
754 surf_action_network_CM02_t action = NULL;
755 double bandwidth_bound;
757 xbt_dynar_t back_route = NULL;
758 int constraints_per_variable = 0;
760 xbt_dynar_t route=xbt_dynar_new(global_routing->size_of_link,NULL);
762 XBT_IN("(%s,%s,%g,%g)", src_name, dst_name, size, rate);
764 routing_get_route_and_latency(src_name, dst_name, &route, &latency);
765 xbt_assert(!xbt_dynar_is_empty(route) || latency,
766 "You're trying to send data from %s to %s but there is no connection at all between these two hosts.",
769 xbt_dynar_foreach(route, i, link) {
770 if (link->lmm_resource.state_current == SURF_RESOURCE_OFF) {
775 if (sg_network_crosstraffic == 1) {
776 routing_get_route_and_latency(dst_name, src_name, &back_route,NULL);
777 xbt_dynar_foreach(back_route, i, link) {
778 if (link->lmm_resource.state_current == SURF_RESOURCE_OFF) {
786 surf_action_new(sizeof(s_surf_action_network_CM02_t), size,
787 surf_network_model, failed);
788 #ifdef HAVE_LATENCY_BOUND_TRACKING
789 (action->generic_action).latency_limited = 0;
791 action->weight = action->latency = latency;
793 xbt_swag_insert(action, action->generic_action.state_set);
795 if(network_update_mechanism == UM_LAZY){
796 action->index_heap = -1;
797 action->last_update = surf_get_clock();
800 bandwidth_bound = -1.0;
801 if(sg_weight_S_parameter>0) {
802 xbt_dynar_foreach(route, i, link) {
804 sg_weight_S_parameter /
805 (link->lmm_resource.power.peak * link->lmm_resource.power.scale);
808 xbt_dynar_foreach(route, i, link) {
809 double bb = bandwidth_factor_callback(size) *
810 (link->lmm_resource.power.peak * link->lmm_resource.power.scale);
811 bandwidth_bound = (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,
820 xbt_assert(!xbt_dynar_is_empty(route),"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, action->latency);
828 constraints_per_variable = xbt_dynar_length(route);
829 if (back_route != NULL)
830 constraints_per_variable += xbt_dynar_length(back_route);
832 if (action->latency > 0){
834 lmm_variable_new(network_maxmin_system, action, 0.0, -1.0,
835 constraints_per_variable);
836 if(network_update_mechanism == UM_LAZY){
837 // add to the heap the event when the latency is payed
838 XBT_DEBUG("Added action (%p) one latency event at date %f", action, action->latency + action->last_update);
839 heap_insert(action, action->latency + action->last_update, xbt_dynar_is_empty(route)?NORMAL:LATENCY);
843 lmm_variable_new(network_maxmin_system, action, 1.0, -1.0,
844 constraints_per_variable);
846 if (action->rate < 0) {
847 lmm_update_variable_bound(network_maxmin_system, action->variable,
848 (action->lat_current > 0)?
849 sg_tcp_gamma / (2.0 * action->lat_current) :-1.0);
851 lmm_update_variable_bound(network_maxmin_system, action->variable,
852 (action->lat_current > 0)?
853 min(action->rate, sg_tcp_gamma / (2.0 * action->lat_current))
857 xbt_dynar_foreach(route, i, link) {
858 lmm_expand(network_maxmin_system, link->lmm_resource.constraint,
859 action->variable, 1.0);
862 if (sg_network_crosstraffic == 1) {
863 XBT_DEBUG("Fullduplex active adding backward flow using 5%%");
864 xbt_dynar_foreach(back_route, i, link) {
865 lmm_expand(network_maxmin_system, link->lmm_resource.constraint,
866 action->variable, .05);
871 if (TRACE_is_enabled()) {
872 action->src_name = xbt_strdup(src_name);
873 action->dst_name = xbt_strdup(dst_name);
875 action->src_name = action->dst_name = NULL;
879 xbt_dynar_free(&route);
882 return (surf_action_t) action;
885 static xbt_dynar_t net_get_route(const char *src, const char *dst)
887 xbt_dynar_t route=NULL;
888 routing_get_route_and_latency(src, dst,&route,NULL);
892 static double net_get_link_bandwidth(const void *link)
894 surf_resource_lmm_t lmm = (surf_resource_lmm_t) link;
895 return lmm->power.peak * lmm->power.scale;
898 static double net_get_link_latency(const void *link)
900 return ((link_CM02_t) link)->lat_current;
903 static int net_link_shared(const void *link)
906 lmm_constraint_is_shared(((surf_resource_lmm_t) link)->constraint);
909 static void net_action_suspend(surf_action_t action)
911 ((surf_action_network_CM02_t) action)->suspended = 1;
912 lmm_update_variable_weight(network_maxmin_system,
913 ((surf_action_network_CM02_t)
914 action)->variable, 0.0);
916 if(network_update_mechanism == UM_LAZY)// remove action from the heap
917 heap_remove((surf_action_network_CM02_t) action);
920 static void net_action_resume(surf_action_t action)
922 if (((surf_action_network_CM02_t) action)->suspended) {
923 lmm_update_variable_weight(network_maxmin_system,
924 ((surf_action_network_CM02_t)
926 ((surf_action_network_CM02_t)
928 ((surf_action_network_CM02_t) action)->suspended = 0;
929 if(network_update_mechanism == UM_LAZY)// remove action from the heap
930 heap_remove((surf_action_network_CM02_t) action);
934 static int net_action_is_suspended(surf_action_t action)
936 return ((surf_action_network_CM02_t) action)->suspended;
939 void net_action_set_max_duration(surf_action_t action, double duration)
941 action->max_duration = duration;
942 if(network_update_mechanism == UM_LAZY)// remove action from the heap
943 heap_remove((surf_action_network_CM02_t) action);
947 static void net_action_set_category(surf_action_t action, const char *category)
949 action->category = xbt_strdup (category);
953 static void net_finalize(void)
955 surf_model_exit(surf_network_model);
956 surf_network_model = NULL;
958 lmm_system_free(network_maxmin_system);
959 network_maxmin_system = NULL;
961 if(network_update_mechanism == UM_LAZY){
962 xbt_heap_free(net_action_heap);
963 xbt_swag_free(net_modified_set);
967 xbt_dynar_free(&smpi_bw_factor);
969 xbt_dynar_free(&smpi_lat_factor);
972 static void smpi_gap_append(double size, const link_CM02_t link, 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 */
986 last_action = (surf_action_network_CM02_t)xbt_fifo_get_item_content(xbt_fifo_get_last_item(fifo));
987 bw = net_get_link_bandwidth(link);
988 action->sender.gap = last_action->sender.gap + max(sg_sender_gap, last_action->sender.size / bw);
989 action->latency += action->sender.gap;
991 /* Append action as last send */
992 action->sender.link_name = link->lmm_resource.generic_resource.name;
993 fifo = (xbt_fifo_t)xbt_dict_get_or_null(gap_lookup, action->sender.link_name);
995 fifo = xbt_fifo_new();
996 xbt_dict_set(gap_lookup, action->sender.link_name, fifo, NULL);
998 action->sender.fifo_item = xbt_fifo_push(fifo, action);
999 action->sender.size = size;
1003 static void smpi_gap_remove(surf_action_network_CM02_t action) {
1007 if(sg_sender_gap > 0.0 && action->sender.link_name && action->sender.fifo_item) {
1008 fifo = (xbt_fifo_t)xbt_dict_get_or_null(gap_lookup, action->sender.link_name);
1009 xbt_fifo_remove_item(fifo, action->sender.fifo_item);
1010 size = xbt_fifo_size(fifo);
1012 xbt_fifo_free(fifo);
1013 xbt_dict_remove(gap_lookup, action->sender.link_name);
1014 size = xbt_dict_length(gap_lookup);
1016 xbt_dict_free(&gap_lookup);
1022 static void surf_network_model_init_internal(void)
1024 s_surf_action_network_CM02_t comm;
1025 surf_network_model = surf_model_init();
1027 surf_network_model->name = "network";
1028 surf_network_model->action_unref = net_action_unref;
1029 surf_network_model->action_cancel = net_action_cancel;
1030 surf_network_model->action_recycle = net_action_recycle;
1031 surf_network_model->get_remains = net_action_get_remains;
1032 #ifdef HAVE_LATENCY_BOUND_TRACKING
1033 surf_network_model->get_latency_limited = net_get_link_latency_limited;
1036 surf_network_model->set_category = net_action_set_category;
1039 surf_network_model->model_private->resource_used = net_resource_used;
1040 if(network_update_mechanism == UM_LAZY) {
1041 surf_network_model->model_private->share_resources = net_share_resources_lazy;
1042 surf_network_model->model_private->update_actions_state = net_update_actions_state_lazy;
1043 } else if(network_update_mechanism == UM_FULL) {
1044 surf_network_model->model_private->share_resources = net_share_resources_full;
1045 surf_network_model->model_private->update_actions_state = net_update_actions_state_full;
1048 surf_network_model->model_private->update_resource_state =
1049 net_update_resource_state;
1050 surf_network_model->model_private->finalize = net_finalize;
1052 surf_network_model->suspend = net_action_suspend;
1053 surf_network_model->resume = net_action_resume;
1054 surf_network_model->is_suspended = net_action_is_suspended;
1055 surf_cpu_model->set_max_duration = net_action_set_max_duration;
1057 surf_network_model->extension.network.communicate = net_communicate;
1058 surf_network_model->extension.network.get_route = net_get_route;
1059 surf_network_model->extension.network.get_link_bandwidth =
1060 net_get_link_bandwidth;
1061 surf_network_model->extension.network.get_link_latency =
1062 net_get_link_latency;
1063 surf_network_model->extension.network.link_shared = net_link_shared;
1064 surf_network_model->extension.network.add_traces = net_add_traces;
1065 surf_network_model->extension.network.create_resource =
1066 net_create_resource;
1068 if (!network_maxmin_system)
1069 network_maxmin_system = lmm_system_new(net_selective_update);
1071 routing_model_create(sizeof(link_CM02_t),
1072 net_create_resource("__loopback__",
1073 498000000, NULL, 0.000015, NULL,
1074 SURF_RESOURCE_ON, NULL,
1075 SURF_LINK_FATPIPE, NULL));
1077 if(network_update_mechanism == UM_LAZY){
1078 net_action_heap = xbt_heap_new(8,NULL);
1079 xbt_heap_set_update_callback(net_action_heap, net_action_update_index_heap);
1080 net_modified_set = xbt_swag_new(xbt_swag_offset(comm, action_list_hookup));
1081 network_maxmin_system->keep_track = net_modified_set;
1085 static void set_update_mechanism(void) {
1087 TRACE_set_network_update_mechanism ();
1090 char *optim = xbt_cfg_get_string(_surf_cfg_set, "network/optim");
1091 int select = xbt_cfg_get_int(_surf_cfg_set, "network/maxmin_selective_update");
1093 if(!strcmp(optim,"Full")) {
1094 network_update_mechanism = UM_FULL;
1095 net_selective_update = select;
1096 } else if (!strcmp(optim,"Lazy")) {
1097 network_update_mechanism = UM_LAZY;
1098 net_selective_update = 1;
1099 xbt_assert((select==1) || (xbt_cfg_is_default_value(_surf_cfg_set,"network/maxmin_selective_update")),
1100 "Disabling selective update while using the lazy update mechanism is dumb!");
1102 xbt_die("Unsupported optimization (%s) for this model",optim);
1106 /************************************************************************/
1107 /* New model based on LV08 and experimental results of MPI ping-pongs */
1108 /************************************************************************/
1109 /* @Inproceedings{smpi_ipdps, */
1110 /* author={Pierre-Nicolas Clauss and Mark Stillwell and Stéphane Genaud and Frédéric Suter and Henri Casanova and Martin Quinson}, */
1111 /* title={Single Node On-Line Simulation of {MPI} Applications with SMPI}, */
1112 /* booktitle={25th IEEE International Parallel and Distributed Processing Symposium (IPDPS'11)}, */
1113 /* address={Anchorage (Alaska) USA}, */
1117 void surf_network_model_init_SMPI(void)
1120 if (surf_network_model)
1122 set_update_mechanism();
1124 surf_network_model_init_internal();
1125 latency_factor_callback = &smpi_latency_factor;
1126 bandwidth_factor_callback = &smpi_bandwidth_factor;
1127 bandwidth_constraint_callback = &smpi_bandwidth_constraint;
1128 gap_append = &smpi_gap_append;
1129 gap_remove = &smpi_gap_remove;
1130 net_define_callbacks();
1131 xbt_dynar_push(model_list, &surf_network_model);
1132 network_solve = lmm_solve;
1134 xbt_cfg_setdefault_double(_surf_cfg_set, "network/sender_gap", 10e-6);
1135 xbt_cfg_setdefault_double(_surf_cfg_set, "network/weight_S", 8775);
1138 /************************************************************************/
1139 /* New model based on optimizations discussed during Pedro Velho's thesis*/
1140 /************************************************************************/
1141 /* @techreport{VELHO:2011:HAL-00646896:1, */
1142 /* url = {http://hal.inria.fr/hal-00646896/en/}, */
1143 /* title = {{Flow-level network models: have we reached the limits?}}, */
1144 /* author = {Velho, Pedro and Schnorr, Lucas and Casanova, Henri and Legrand, Arnaud}, */
1145 /* type = {Rapport de recherche}, */
1146 /* institution = {INRIA}, */
1147 /* number = {RR-7821}, */
1148 /* year = {2011}, */
1150 /* pdf = {http://hal.inria.fr/hal-00646896/PDF/rr-validity.pdf}, */
1152 void surf_network_model_init_LegrandVelho(void)
1154 if (surf_network_model)
1157 set_update_mechanism();
1159 surf_network_model_init_internal();
1160 net_define_callbacks();
1161 xbt_dynar_push(model_list, &surf_network_model);
1162 network_solve = lmm_solve;
1164 xbt_cfg_setdefault_double(_surf_cfg_set, "network/latency_factor", 13.01);
1165 xbt_cfg_setdefault_double(_surf_cfg_set, "network/bandwidth_factor",0.97);
1166 xbt_cfg_setdefault_double(_surf_cfg_set, "network/weight_S", 20537);
1169 /***************************************************************************/
1170 /* The nice TCP sharing model designed by Loris Marchal and Henri Casanova */
1171 /***************************************************************************/
1172 /* @TechReport{ rr-lip2002-40, */
1173 /* author = {Henri Casanova and Loris Marchal}, */
1174 /* institution = {LIP}, */
1175 /* title = {A Network Model for Simulation of Grid Application}, */
1176 /* number = {2002-40}, */
1177 /* month = {oct}, */
1180 void surf_network_model_init_CM02(void)
1183 if (surf_network_model)
1186 set_update_mechanism();
1187 surf_network_model_init_internal();
1188 net_define_callbacks();
1189 xbt_dynar_push(model_list, &surf_network_model);
1190 network_solve = lmm_solve;
1192 xbt_cfg_setdefault_double(_surf_cfg_set, "network/latency_factor", 1.0);
1193 xbt_cfg_setdefault_double(_surf_cfg_set, "network/bandwidth_factor", 1.0);
1194 xbt_cfg_setdefault_double(_surf_cfg_set, "network/weight_S", 0.0);
1197 /***************************************************************************/
1198 /* The models from Steven H. Low */
1199 /***************************************************************************/
1200 /* @article{Low03, */
1201 /* author={Steven H. Low}, */
1202 /* title={A Duality Model of {TCP} and Queue Management Algorithms}, */
1204 /* journal={{IEEE/ACM} Transactions on Networking}, */
1205 /* volume={11}, number={4}, */
1207 void surf_network_model_init_Reno(void)
1209 if (surf_network_model)
1212 set_update_mechanism();
1213 surf_network_model_init_internal();
1214 net_define_callbacks();
1216 xbt_dynar_push(model_list, &surf_network_model);
1217 lmm_set_default_protocol_function(func_reno_f, func_reno_fp,
1219 network_solve = lagrange_solve;
1221 xbt_cfg_setdefault_double(_surf_cfg_set, "network/latency_factor", 10.4);
1222 xbt_cfg_setdefault_double(_surf_cfg_set, "network/bandwidth_factor",
1224 xbt_cfg_setdefault_double(_surf_cfg_set, "network/weight_S", 8775);
1228 void surf_network_model_init_Reno2(void)
1230 if (surf_network_model)
1233 set_update_mechanism();
1234 surf_network_model_init_internal();
1235 net_define_callbacks();
1237 xbt_dynar_push(model_list, &surf_network_model);
1238 lmm_set_default_protocol_function(func_reno2_f, func_reno2_fp,
1240 network_solve = lagrange_solve;
1242 xbt_cfg_setdefault_double(_surf_cfg_set, "network/latency_factor", 10.4);
1243 xbt_cfg_setdefault_double(_surf_cfg_set, "network/bandwidth_factor",
1245 xbt_cfg_setdefault_double(_surf_cfg_set, "network/weight_S_parameter",
1249 void surf_network_model_init_Vegas(void)
1251 if (surf_network_model)
1254 set_update_mechanism();
1255 surf_network_model_init_internal();
1256 net_define_callbacks();
1258 xbt_dynar_push(model_list, &surf_network_model);
1259 lmm_set_default_protocol_function(func_vegas_f, func_vegas_fp,
1261 network_solve = lagrange_solve;
1263 xbt_cfg_setdefault_double(_surf_cfg_set, "network/latency_factor", 10.4);
1264 xbt_cfg_setdefault_double(_surf_cfg_set, "network/bandwidth_factor",
1266 xbt_cfg_setdefault_double(_surf_cfg_set, "network/weight_S", 8775);