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;
63 xbt_swag_t keep_track = NULL;
65 /* added to manage the communication action's heap */
66 static void net_action_update_index_heap(void *action, int i)
68 ((surf_action_network_CM02_t) action)->index_heap = i;
71 /* insert action on heap using a given key and a hat (heap_action_type)
72 * a hat can be of three types for communications:
74 * NORMAL = this is a normal heap entry stating the date to finish transmitting
75 * LATENCY = this is a heap entry to warn us when the latency is payed
76 * MAX_DURATION =this is a heap entry to warn us when the max_duration limit is reached
78 static void heap_insert(surf_action_network_CM02_t action, double key, enum heap_action_type hat){
80 xbt_heap_push(net_action_heap, action, key);
83 static void heap_remove(surf_action_network_CM02_t action){
85 if(((surf_action_network_CM02_t) action)->index_heap >= 0){
86 xbt_heap_remove(net_action_heap,action->index_heap);
90 /******************************************************************************/
91 /* Factors callbacks */
92 /******************************************************************************/
93 static double constant_latency_factor(double size)
95 return sg_latency_factor;
98 static double constant_bandwidth_factor(double size)
100 return sg_bandwidth_factor;
103 static double constant_bandwidth_constraint(double rate, double bound,
109 /**********************/
111 /**********************/
112 static xbt_dynar_t parse_factor(const char *smpi_coef_string)
115 unsigned int iter = 0;
116 s_smpi_factor_t fact;
117 xbt_dynar_t smpi_factor, radical_elements, radical_elements2 = NULL;
119 smpi_factor = xbt_dynar_new(sizeof(s_smpi_factor_t), NULL);
120 radical_elements = xbt_str_split(smpi_coef_string, ";");
121 xbt_dynar_foreach(radical_elements, iter, value) {
123 radical_elements2 = xbt_str_split(value, ":");
124 if(xbt_dynar_length(radical_elements2) != 2)
125 xbt_die("Malformed radical for smpi factor!");
126 fact.factor = atol(xbt_dynar_get_as(radical_elements2,0,char*));
127 fact.value = atof(xbt_dynar_get_as(radical_elements2,1,char*));
128 xbt_dynar_push_as(smpi_factor,s_smpi_factor_t,fact);
129 XBT_DEBUG("smpi_factor:\t%ld : %f",fact.factor,fact.value);
130 xbt_dynar_free(&radical_elements2);
132 xbt_dynar_free(&radical_elements);
136 static double smpi_bandwidth_factor(double size)
139 smpi_bw_factor = parse_factor( xbt_cfg_get_string(_surf_cfg_set,"smpi/bw_factor") );
141 unsigned int iter = 0;
142 s_smpi_factor_t fact;
143 xbt_dynar_foreach(smpi_bw_factor, iter, fact) {
144 if(size >= fact.factor){
145 XBT_DEBUG("%lf >= %ld return %f",size,fact.factor,fact.value);
153 static double smpi_latency_factor(double size)
156 smpi_lat_factor = parse_factor( xbt_cfg_get_string(_surf_cfg_set,"smpi/lat_factor") );
158 unsigned int iter = 0;
159 s_smpi_factor_t fact;
160 xbt_dynar_foreach(smpi_lat_factor, iter, fact) {
161 if(size >= fact.factor){
162 XBT_DEBUG("%lf >= %ld return %f",size,fact.factor,fact.value);
169 /**--------- <copy/paste C code snippet in surf/network.c> -----------*/
171 static double smpi_bandwidth_constraint(double rate, double bound,
174 return rate < 0 ? bound : min(bound, rate * smpi_bandwidth_factor(size));
177 static double (*latency_factor_callback) (double) =
178 &constant_latency_factor;
179 static double (*bandwidth_factor_callback) (double) =
180 &constant_bandwidth_factor;
181 static double (*bandwidth_constraint_callback) (double, double, double) =
182 &constant_bandwidth_constraint;
184 static void (*gap_append) (double, const link_CM02_t, surf_action_network_CM02_t) = NULL;
185 static void (*gap_remove) (surf_action_network_CM02_t) = NULL;
187 static void* net_create_resource(const char *name,
189 tmgr_trace_t bw_trace,
191 tmgr_trace_t lat_trace,
192 e_surf_resource_state_t
194 tmgr_trace_t state_trace,
195 e_surf_link_sharing_policy_t
196 policy, xbt_dict_t properties)
198 link_CM02_t nw_link = (link_CM02_t)
199 surf_resource_lmm_new(sizeof(s_link_CM02_t),
200 surf_network_model, name, properties,
201 network_maxmin_system,
202 sg_bandwidth_factor * bw_initial,
204 state_initial, state_trace,
205 bw_initial, bw_trace);
207 xbt_assert(!xbt_lib_get_or_null(link_lib, name, SURF_LINK_LEVEL),
208 "Link '%s' declared several times in the platform file.",
211 nw_link->lat_current = lat_initial;
214 tmgr_history_add_trace(history, lat_trace, 0.0, 0, nw_link);
216 if (policy == SURF_LINK_FATPIPE)
217 lmm_constraint_shared(nw_link->lmm_resource.constraint);
219 xbt_lib_set(link_lib, name, SURF_LINK_LEVEL, nw_link);
224 static void net_parse_link_init(sg_platf_link_cbarg_t link)
226 if(link->policy == SURF_LINK_FULLDUPLEX){
228 link_id = bprintf("%s_UP", link->id);
229 net_create_resource(link_id,
231 link->bandwidth_trace,
239 link_id = bprintf("%s_DOWN", link->id);
240 net_create_resource(link_id,
242 link->bandwidth_trace,
252 net_create_resource(link->id,
254 link->bandwidth_trace,
264 static void net_add_traces(void)
266 xbt_dict_cursor_t cursor = NULL;
267 char *trace_name, *elm;
269 static int called = 0;
274 /* connect all traces relative to network */
275 xbt_dict_foreach(trace_connect_list_link_avail, cursor, trace_name, elm) {
276 tmgr_trace_t trace = xbt_dict_get_or_null(traces_set_list, trace_name);
278 xbt_lib_get_or_null(link_lib, elm, SURF_LINK_LEVEL);
280 xbt_assert(link, "Cannot connect trace %s to link %s: link undefined",
283 "Cannot connect trace %s to link %s: trace undefined",
286 link->lmm_resource.state_event =
287 tmgr_history_add_trace(history, trace, 0.0, 0, link);
290 xbt_dict_foreach(trace_connect_list_bandwidth, cursor, trace_name, elm) {
291 tmgr_trace_t trace = xbt_dict_get_or_null(traces_set_list, trace_name);
293 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);
308 xbt_lib_get_or_null(link_lib, elm, SURF_LINK_LEVEL);
310 xbt_assert(link, "Cannot connect trace %s to link %s: link undefined",
313 "Cannot connect trace %s to link %s: trace undefined",
316 link->lat_event = tmgr_history_add_trace(history, trace, 0.0, 0, link);
320 static void net_define_callbacks(void)
322 /* Figuring out the network links */
323 sg_platf_link_add_cb(net_parse_link_init);
324 sg_platf_postparse_add_cb(net_add_traces);
327 static int net_resource_used(void *resource_id)
329 return lmm_constraint_used(network_maxmin_system,
330 ((surf_resource_lmm_t)
331 resource_id)->constraint);
334 static int net_action_unref(surf_action_t action)
337 if (!action->refcount) {
338 xbt_swag_remove(action, action->state_set);
339 if (((surf_action_network_CM02_t) action)->variable){
340 lmm_variable_free(network_maxmin_system,
341 ((surf_action_network_CM02_t) action)->variable);
343 if(network_update_mechanism == UM_LAZY){// remove action from the heap
344 heap_remove((surf_action_network_CM02_t) action);
345 xbt_swag_remove(action, net_modified_set);
348 xbt_free(((surf_action_network_CM02_t) action)->src_name);
349 xbt_free(((surf_action_network_CM02_t) action)->dst_name);
350 xbt_free(action->category);
352 surf_action_free(&action);
360 static void net_action_cancel(surf_action_t action)
362 XBT_DEBUG("cancel action %p",action);
363 surf_network_model->action_state_set(action, SURF_ACTION_FAILED);
364 if(network_update_mechanism == UM_LAZY){// remove action from the heap
365 xbt_swag_remove(action, net_modified_set);
366 heap_remove((surf_action_network_CM02_t) action);
370 void net_action_recycle(surf_action_t action)
375 #ifdef HAVE_LATENCY_BOUND_TRACKING
376 int net_get_link_latency_limited(surf_action_t action)
378 return action->latency_limited;
382 double net_action_get_remains(surf_action_t action)
384 if(network_update_mechanism == UM_LAZY)/* update remains before return it */
385 update_action_remaining(surf_get_clock());
386 return action->remains;
389 static void update_action_remaining(double now){
390 surf_action_network_CM02_t action = NULL;
393 xbt_swag_foreach(action, net_modified_set) {
395 if(action->suspended != 0){
399 delta = now - action->last_update;
401 double_update(&(action->generic_action.remains),
402 lmm_variable_getvalue(action->variable) * delta);
404 if (action->generic_action.max_duration != NO_MAX_DURATION)
405 double_update(&(action->generic_action.max_duration), delta);
407 if ((action->generic_action.remains <= 0) &&
408 (lmm_get_variable_weight(action->variable) > 0)) {
409 action->generic_action.finish = surf_get_clock();
410 surf_network_model->action_state_set((surf_action_t) action,
413 } else if ((action->generic_action.max_duration != NO_MAX_DURATION)
414 && (action->generic_action.max_duration <= 0)) {
415 action->generic_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_network_CM02_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 (action->generic_action).latency_limited = 1;
446 (action->generic_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;
465 XBT_DEBUG("Before share resources, the size of modified actions set is %d", xbt_swag_size(net_modified_set));
466 update_action_remaining(now);
468 keep_track = net_modified_set;
469 lmm_solve(network_maxmin_system);
472 XBT_DEBUG("After share resources, The size of modified actions set is %d", xbt_swag_size(net_modified_set));
474 xbt_swag_foreach(action, net_modified_set) {
475 int max_dur_flag = 0;
477 if (GENERIC_ACTION(action).state_set != surf_network_model->states.running_action_set){
481 /* bogus priority, skip it */
482 if (GENERIC_ACTION(action).priority <= 0){
487 value = lmm_variable_getvalue(action->variable);
489 if (GENERIC_ACTION(action).remains > 0) {
490 value = GENERIC_ACTION(action).remains / value;
498 if ((GENERIC_ACTION(action).max_duration != NO_MAX_DURATION)
500 || GENERIC_ACTION(action).start +
501 GENERIC_ACTION(action).max_duration < min)){
502 min = GENERIC_ACTION(action).start +
503 GENERIC_ACTION(action).max_duration;
507 XBT_DEBUG("Action(%p) Start %lf Finish %lf Max_duration %lf", action,
508 GENERIC_ACTION(action).start, now + value,
509 GENERIC_ACTION(action).max_duration);
511 if (action->index_heap >= 0) {
512 heap_remove((surf_action_network_CM02_t) action);
516 heap_insert((surf_action_network_CM02_t) action, min, max_dur_flag?MAX_DURATION:NORMAL);
517 XBT_DEBUG("Insert at heap action(%p) min %lf now %lf", action, min, now);
521 //hereafter must have already the min value for this resource model
522 if(xbt_heap_size(net_action_heap) > 0 ){
523 min = xbt_heap_maxkey(net_action_heap) - now ;
528 XBT_DEBUG("The minimum with the HEAP %lf", min);
533 static void net_update_actions_state_full(double now, double delta)
536 surf_action_network_CM02_t action = NULL;
537 surf_action_network_CM02_t next_action = NULL;
538 xbt_swag_t running_actions =
539 surf_network_model->states.running_action_set;
541 xbt_swag_t failed_actions =
542 surf_network_model->states.failed_action_set;
545 xbt_swag_foreach_safe(action, next_action, running_actions) {
547 if (action->latency > 0) {
548 if (action->latency > deltap) {
549 double_update(&(action->latency), deltap);
552 double_update(&(deltap), action->latency);
553 action->latency = 0.0;
555 if ((action->latency == 0.0) && !(action->suspended))
556 lmm_update_variable_weight(network_maxmin_system, action->variable,
560 if (TRACE_is_enabled()) {
561 xbt_dynar_t route=NULL;
562 routing_get_route_and_latency(action->src_name, action->dst_name,&route,NULL);
565 xbt_dynar_foreach(route, i, link) {
566 TRACE_surf_link_set_utilization(link->lmm_resource.generic_resource.name,
567 action->generic_action.data,
568 (surf_action_t) action,
569 lmm_variable_getvalue
570 (action->variable), now - delta,
575 if(!lmm_get_number_of_cnst_from_var(network_maxmin_system, action->variable)) {
576 /* There is actually no link used, hence an infinite bandwidth.
577 * This happens often when using models like vivaldi.
578 * In such case, just make sure that the action completes immediately.
580 double_update(&(action->generic_action.remains),
581 action->generic_action.remains);
583 double_update(&(action->generic_action.remains),
584 lmm_variable_getvalue(action->variable) * deltap);
585 if (action->generic_action.max_duration != NO_MAX_DURATION)
586 double_update(&(action->generic_action.max_duration), delta);
588 if ((action->generic_action.remains <= 0) &&
589 (lmm_get_variable_weight(action->variable) > 0)) {
590 action->generic_action.finish = surf_get_clock();
591 surf_network_model->action_state_set((surf_action_t) action,
594 if(gap_remove) gap_remove(action);
595 } else if ((action->generic_action.max_duration != NO_MAX_DURATION)
596 && (action->generic_action.max_duration <= 0)) {
597 action->generic_action.finish = surf_get_clock();
598 surf_network_model->action_state_set((surf_action_t) action,
600 if(gap_remove) gap_remove(action);
607 static void net_update_actions_state_lazy(double now, double delta)
609 surf_action_network_CM02_t action = NULL;
611 while ((xbt_heap_size(net_action_heap) > 0)
612 && (double_equals(xbt_heap_maxkey(net_action_heap), now))) {
613 action = xbt_heap_pop(net_action_heap);
614 XBT_DEBUG("Action %p: finish", action);
615 GENERIC_ACTION(action).finish = surf_get_clock();
617 // if I am wearing a latency hat
618 if( action->hat == LATENCY){
619 lmm_update_variable_weight(network_maxmin_system, action->variable,
622 action->last_update = surf_get_clock();
624 // if I am wearing a max_duration or normal hat
625 }else if( action->hat == MAX_DURATION || action->hat == NORMAL ){
626 // no need to communicate anymore
627 // assume that flows that reached max_duration have remaining of 0
628 GENERIC_ACTION(action).remains = 0;
629 action->generic_action.finish = surf_get_clock();
630 surf_network_model->action_state_set((surf_action_t) action,
638 static void net_update_resource_state(void *id,
639 tmgr_trace_event_t event_type,
640 double value, double date)
642 link_CM02_t nw_link = id;
643 /* printf("[" "%lg" "] Asking to update network card \"%s\" with value " */
644 /* "%lg" " for event %p\n", surf_get_clock(), nw_link->name, */
645 /* value, event_type); */
647 if (event_type == nw_link->lmm_resource.power.event) {
649 sg_weight_S_parameter / value - sg_weight_S_parameter /
650 (nw_link->lmm_resource.power.peak *
651 nw_link->lmm_resource.power.scale);
652 lmm_variable_t var = NULL;
653 lmm_element_t elem = NULL;
654 surf_action_network_CM02_t action = NULL;
656 nw_link->lmm_resource.power.peak = value;
657 lmm_update_constraint_bound(network_maxmin_system,
658 nw_link->lmm_resource.constraint,
659 sg_bandwidth_factor *
660 (nw_link->lmm_resource.power.peak *
661 nw_link->lmm_resource.power.scale));
663 TRACE_surf_link_set_bandwidth(date, (char *)(((nw_link->lmm_resource).generic_resource).name),
664 sg_bandwidth_factor *
665 (nw_link->lmm_resource.power.peak *
666 nw_link->lmm_resource.power.scale));
668 if (sg_weight_S_parameter > 0) {
669 while ((var = lmm_get_var_from_cnst
670 (network_maxmin_system, nw_link->lmm_resource.constraint,
672 action = lmm_variable_id(var);
673 action->weight += delta;
674 if (!(action->suspended))
675 lmm_update_variable_weight(network_maxmin_system,
676 action->variable, action->weight);
679 if (tmgr_trace_event_free(event_type))
680 nw_link->lmm_resource.power.event = NULL;
681 } else if (event_type == nw_link->lat_event) {
682 double delta = value - nw_link->lat_current;
683 lmm_variable_t var = NULL;
684 lmm_element_t elem = NULL;
685 surf_action_network_CM02_t action = NULL;
687 nw_link->lat_current = value;
688 while ((var = lmm_get_var_from_cnst
689 (network_maxmin_system, nw_link->lmm_resource.constraint,
691 action = lmm_variable_id(var);
692 action->lat_current += delta;
693 action->weight += delta;
694 if (action->rate < 0)
695 lmm_update_variable_bound(network_maxmin_system, action->variable,
696 sg_tcp_gamma / (2.0 *
697 action->lat_current));
699 lmm_update_variable_bound(network_maxmin_system, action->variable,
701 sg_tcp_gamma / (2.0 *
702 action->lat_current)));
704 if (action->rate < sg_tcp_gamma / (2.0 * action->lat_current)) {
705 XBT_INFO("Flow is limited BYBANDWIDTH");
707 XBT_INFO("Flow is limited BYLATENCY, latency of flow is %f",
708 action->lat_current);
711 if (!(action->suspended))
712 lmm_update_variable_weight(network_maxmin_system, action->variable,
716 if (tmgr_trace_event_free(event_type))
717 nw_link->lat_event = NULL;
718 } else if (event_type == nw_link->lmm_resource.state_event) {
720 nw_link->lmm_resource.state_current = SURF_RESOURCE_ON;
722 lmm_constraint_t cnst = nw_link->lmm_resource.constraint;
723 lmm_variable_t var = NULL;
724 lmm_element_t elem = NULL;
726 nw_link->lmm_resource.state_current = SURF_RESOURCE_OFF;
727 while ((var = lmm_get_var_from_cnst
728 (network_maxmin_system, cnst, &elem))) {
729 surf_action_t action = lmm_variable_id(var);
731 if (surf_action_state_get(action) == SURF_ACTION_RUNNING ||
732 surf_action_state_get(action) == SURF_ACTION_READY) {
733 action->finish = date;
734 surf_network_model->action_state_set(action, SURF_ACTION_FAILED);
738 if (tmgr_trace_event_free(event_type))
739 nw_link->lmm_resource.state_event = NULL;
741 XBT_CRITICAL("Unknown event ! \n");
745 XBT_DEBUG("There were a resource state event, need to update actions related to the constraint (%p)", nw_link->lmm_resource.constraint);
750 static surf_action_t net_communicate(const char *src_name,
751 const char *dst_name, double size,
757 surf_action_network_CM02_t action = NULL;
758 double bandwidth_bound;
760 xbt_dynar_t back_route = NULL;
761 int constraints_per_variable = 0;
763 xbt_dynar_t route=xbt_dynar_new(global_routing->size_of_link,NULL);
765 XBT_IN("(%s,%s,%g,%g)", src_name, dst_name, size, rate);
767 routing_get_route_and_latency(src_name, dst_name, &route, &latency);
768 xbt_assert(!xbt_dynar_is_empty(route) || latency,
769 "You're trying to send data from %s to %s but there is no connection at all between these two hosts.",
772 xbt_dynar_foreach(route, i, link) {
773 if (link->lmm_resource.state_current == SURF_RESOURCE_OFF) {
778 if (sg_network_crosstraffic == 1) {
779 routing_get_route_and_latency(dst_name, src_name, &back_route,NULL);
780 xbt_dynar_foreach(back_route, i, link) {
781 if (link->lmm_resource.state_current == SURF_RESOURCE_OFF) {
789 surf_action_new(sizeof(s_surf_action_network_CM02_t), size,
790 surf_network_model, failed);
791 #ifdef HAVE_LATENCY_BOUND_TRACKING
792 (action->generic_action).latency_limited = 0;
794 action->weight = action->latency = latency;
796 xbt_swag_insert(action, action->generic_action.state_set);
798 if(network_update_mechanism == UM_LAZY){
799 action->index_heap = -1;
800 action->last_update = surf_get_clock();
803 bandwidth_bound = -1.0;
804 if(sg_weight_S_parameter>0) {
805 xbt_dynar_foreach(route, i, link) {
807 sg_weight_S_parameter /
808 (link->lmm_resource.power.peak * link->lmm_resource.power.scale);
811 xbt_dynar_foreach(route, i, link) {
812 double bb = bandwidth_factor_callback(size) *
813 (link->lmm_resource.power.peak * link->lmm_resource.power.scale);
814 bandwidth_bound = (bandwidth_bound < 0.0)?bb:min(bandwidth_bound,bb);
817 action->lat_current = action->latency;
818 action->latency *= latency_factor_callback(size);
820 bandwidth_constraint_callback(action->rate, bandwidth_bound,
823 xbt_assert(!xbt_dynar_is_empty(route),"Using a model with a gap (e.g., SMPI) with a platform without links (e.g. vivaldi)!!!");
825 link = *(link_CM02_t*)xbt_dynar_get_ptr(route, 0);
826 gap_append(size, link, action);
827 XBT_DEBUG("Comm %p: %s -> %s gap=%f (lat=%f)",
828 action, src_name, dst_name, action->sender.gap, action->latency);
831 constraints_per_variable = xbt_dynar_length(route);
832 if (back_route != NULL)
833 constraints_per_variable += xbt_dynar_length(back_route);
835 if (action->latency > 0){
837 lmm_variable_new(network_maxmin_system, action, 0.0, -1.0,
838 constraints_per_variable);
839 if(network_update_mechanism == UM_LAZY){
840 // add to the heap the event when the latency is payed
841 XBT_DEBUG("Added action (%p) one latency event at date %f", action, action->latency + action->last_update);
842 heap_insert(action, action->latency + action->last_update, xbt_dynar_is_empty(route)?NORMAL:LATENCY);
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, action->variable,
851 (action->lat_current > 0)?
852 sg_tcp_gamma / (2.0 * action->lat_current) :-1.0);
854 lmm_update_variable_bound(network_maxmin_system, action->variable,
855 (action->lat_current > 0)?
856 min(action->rate, sg_tcp_gamma / (2.0 * action->lat_current))
860 xbt_dynar_foreach(route, i, link) {
861 lmm_expand(network_maxmin_system, link->lmm_resource.constraint,
862 action->variable, 1.0);
865 if (sg_network_crosstraffic == 1) {
866 XBT_DEBUG("Fullduplex active adding backward flow using 5%%");
867 xbt_dynar_foreach(back_route, i, link) {
868 lmm_expand(network_maxmin_system, link->lmm_resource.constraint,
869 action->variable, .05);
874 if (TRACE_is_enabled()) {
875 action->src_name = xbt_strdup(src_name);
876 action->dst_name = xbt_strdup(dst_name);
878 action->src_name = action->dst_name = NULL;
882 xbt_dynar_free(&route);
885 return (surf_action_t) action;
888 static xbt_dynar_t net_get_route(const char *src, const char *dst)
890 xbt_dynar_t route=NULL;
891 routing_get_route_and_latency(src, dst,&route,NULL);
895 static double net_get_link_bandwidth(const void *link)
897 surf_resource_lmm_t lmm = (surf_resource_lmm_t) link;
898 return lmm->power.peak * lmm->power.scale;
901 static double net_get_link_latency(const void *link)
903 return ((link_CM02_t) link)->lat_current;
906 static int net_link_shared(const void *link)
909 lmm_constraint_is_shared(((surf_resource_lmm_t) link)->constraint);
912 static void net_action_suspend(surf_action_t action)
914 ((surf_action_network_CM02_t) action)->suspended = 1;
915 lmm_update_variable_weight(network_maxmin_system,
916 ((surf_action_network_CM02_t)
917 action)->variable, 0.0);
919 if(network_update_mechanism == UM_LAZY)// remove action from the heap
920 heap_remove((surf_action_network_CM02_t) action);
923 static void net_action_resume(surf_action_t action)
925 if (((surf_action_network_CM02_t) action)->suspended) {
926 lmm_update_variable_weight(network_maxmin_system,
927 ((surf_action_network_CM02_t)
929 ((surf_action_network_CM02_t)
931 ((surf_action_network_CM02_t) action)->suspended = 0;
932 if(network_update_mechanism == UM_LAZY)// remove action from the heap
933 heap_remove((surf_action_network_CM02_t) action);
937 static int net_action_is_suspended(surf_action_t action)
939 return ((surf_action_network_CM02_t) action)->suspended;
942 void net_action_set_max_duration(surf_action_t action, double duration)
944 action->max_duration = duration;
945 if(network_update_mechanism == UM_LAZY)// remove action from the heap
946 heap_remove((surf_action_network_CM02_t) action);
950 static void net_action_set_category(surf_action_t action, const char *category)
952 action->category = xbt_strdup (category);
956 static void net_finalize(void)
958 surf_model_exit(surf_network_model);
959 surf_network_model = NULL;
961 lmm_system_free(network_maxmin_system);
962 network_maxmin_system = NULL;
964 if(network_update_mechanism == UM_LAZY){
965 xbt_heap_free(net_action_heap);
966 xbt_swag_free(net_modified_set);
970 xbt_dynar_free(&smpi_bw_factor);
972 xbt_dynar_free(&smpi_lat_factor);
975 static void smpi_gap_append(double size, const link_CM02_t link, surf_action_network_CM02_t action) {
976 const char* src = link->lmm_resource.generic_resource.name;
978 surf_action_network_CM02_t last_action;
981 if(sg_sender_gap > 0.0) {
983 gap_lookup = xbt_dict_new();
985 fifo = (xbt_fifo_t)xbt_dict_get_or_null(gap_lookup, src);
986 action->sender.gap = 0.0;
987 if(fifo && xbt_fifo_size(fifo) > 0) {
988 /* Compute gap from last send */
989 last_action = (surf_action_network_CM02_t)xbt_fifo_get_item_content(xbt_fifo_get_last_item(fifo));
990 bw = net_get_link_bandwidth(link);
991 action->sender.gap = last_action->sender.gap + max(sg_sender_gap, last_action->sender.size / bw);
992 action->latency += action->sender.gap;
994 /* Append action as last send */
995 action->sender.link_name = link->lmm_resource.generic_resource.name;
996 fifo = (xbt_fifo_t)xbt_dict_get_or_null(gap_lookup, action->sender.link_name);
998 fifo = xbt_fifo_new();
999 xbt_dict_set(gap_lookup, action->sender.link_name, fifo, NULL);
1001 action->sender.fifo_item = xbt_fifo_push(fifo, action);
1002 action->sender.size = size;
1006 static void smpi_gap_remove(surf_action_network_CM02_t action) {
1010 if(sg_sender_gap > 0.0 && action->sender.link_name && action->sender.fifo_item) {
1011 fifo = (xbt_fifo_t)xbt_dict_get_or_null(gap_lookup, action->sender.link_name);
1012 xbt_fifo_remove_item(fifo, action->sender.fifo_item);
1013 size = xbt_fifo_size(fifo);
1015 xbt_fifo_free(fifo);
1016 xbt_dict_remove(gap_lookup, action->sender.link_name);
1017 size = xbt_dict_length(gap_lookup);
1019 xbt_dict_free(&gap_lookup);
1025 static void surf_network_model_init_internal(void)
1027 s_surf_action_network_CM02_t comm;
1028 surf_network_model = surf_model_init();
1030 surf_network_model->name = "network";
1031 surf_network_model->action_unref = net_action_unref;
1032 surf_network_model->action_cancel = net_action_cancel;
1033 surf_network_model->action_recycle = net_action_recycle;
1034 surf_network_model->get_remains = net_action_get_remains;
1035 #ifdef HAVE_LATENCY_BOUND_TRACKING
1036 surf_network_model->get_latency_limited = net_get_link_latency_limited;
1039 surf_network_model->set_category = net_action_set_category;
1042 surf_network_model->model_private->resource_used = net_resource_used;
1043 if(network_update_mechanism == UM_LAZY) {
1044 surf_network_model->model_private->share_resources = net_share_resources_lazy;
1045 surf_network_model->model_private->update_actions_state = net_update_actions_state_lazy;
1046 } else if(network_update_mechanism == UM_FULL) {
1047 surf_network_model->model_private->share_resources = net_share_resources_full;
1048 surf_network_model->model_private->update_actions_state = net_update_actions_state_full;
1051 surf_network_model->model_private->update_resource_state =
1052 net_update_resource_state;
1053 surf_network_model->model_private->finalize = net_finalize;
1055 surf_network_model->suspend = net_action_suspend;
1056 surf_network_model->resume = net_action_resume;
1057 surf_network_model->is_suspended = net_action_is_suspended;
1058 surf_cpu_model->set_max_duration = net_action_set_max_duration;
1060 surf_network_model->extension.network.communicate = net_communicate;
1061 surf_network_model->extension.network.get_route = net_get_route;
1062 surf_network_model->extension.network.get_link_bandwidth =
1063 net_get_link_bandwidth;
1064 surf_network_model->extension.network.get_link_latency =
1065 net_get_link_latency;
1066 surf_network_model->extension.network.link_shared = net_link_shared;
1067 surf_network_model->extension.network.add_traces = net_add_traces;
1068 surf_network_model->extension.network.create_resource =
1069 net_create_resource;
1071 if (!network_maxmin_system)
1072 network_maxmin_system = lmm_system_new(net_selective_update);
1074 routing_model_create(sizeof(link_CM02_t),
1075 net_create_resource("__loopback__",
1076 498000000, NULL, 0.000015, NULL,
1077 SURF_RESOURCE_ON, NULL,
1078 SURF_LINK_FATPIPE, NULL));
1080 if(network_update_mechanism == UM_LAZY){
1081 net_action_heap = xbt_heap_new(8,NULL);
1082 xbt_heap_set_update_callback(net_action_heap, net_action_update_index_heap);
1084 xbt_swag_new(xbt_swag_offset(comm, action_list_hookup));
1088 static void set_update_mechanism(void) {
1090 TRACE_set_network_update_mechanism ();
1093 char *optim = xbt_cfg_get_string(_surf_cfg_set, "network/optim");
1094 int select = xbt_cfg_get_int(_surf_cfg_set, "network/maxmin_selective_update");
1096 if(!strcmp(optim,"Full")) {
1097 network_update_mechanism = UM_FULL;
1098 net_selective_update = select;
1099 } else if (!strcmp(optim,"Lazy")) {
1100 network_update_mechanism = UM_LAZY;
1101 net_selective_update = 1;
1102 xbt_assert((select==1) || (xbt_cfg_is_default_value(_surf_cfg_set,"network/maxmin_selective_update")),
1103 "Disabling selective update while using the lazy update mechanism is dumb!");
1105 xbt_die("Unsupported optimization (%s) for this model",optim);
1109 /************************************************************************/
1110 /* New model based on LV08 and experimental results of MPI ping-pongs */
1111 /************************************************************************/
1112 /* @Inproceedings{smpi_ipdps, */
1113 /* author={Pierre-Nicolas Clauss and Mark Stillwell and Stéphane Genaud and Frédéric Suter and Henri Casanova and Martin Quinson}, */
1114 /* title={Single Node On-Line Simulation of {MPI} Applications with SMPI}, */
1115 /* booktitle={25th IEEE International Parallel and Distributed Processing Symposium (IPDPS'11)}, */
1116 /* address={Anchorage (Alaska) USA}, */
1120 void surf_network_model_init_SMPI(void)
1123 if (surf_network_model)
1125 set_update_mechanism();
1127 surf_network_model_init_internal();
1128 latency_factor_callback = &smpi_latency_factor;
1129 bandwidth_factor_callback = &smpi_bandwidth_factor;
1130 bandwidth_constraint_callback = &smpi_bandwidth_constraint;
1131 gap_append = &smpi_gap_append;
1132 gap_remove = &smpi_gap_remove;
1133 net_define_callbacks();
1134 xbt_dynar_push(model_list, &surf_network_model);
1135 network_solve = lmm_solve;
1137 xbt_cfg_setdefault_double(_surf_cfg_set, "network/sender_gap", 10e-6);
1138 xbt_cfg_setdefault_double(_surf_cfg_set, "network/weight_S", 8775);
1141 /************************************************************************/
1142 /* New model based on optimizations discussed during Pedro Velho's thesis*/
1143 /************************************************************************/
1144 /* @techreport{VELHO:2011:HAL-00646896:1, */
1145 /* url = {http://hal.inria.fr/hal-00646896/en/}, */
1146 /* title = {{Flow-level network models: have we reached the limits?}}, */
1147 /* author = {Velho, Pedro and Schnorr, Lucas and Casanova, Henri and Legrand, Arnaud}, */
1148 /* type = {Rapport de recherche}, */
1149 /* institution = {INRIA}, */
1150 /* number = {RR-7821}, */
1151 /* year = {2011}, */
1153 /* pdf = {http://hal.inria.fr/hal-00646896/PDF/rr-validity.pdf}, */
1155 void surf_network_model_init_LegrandVelho(void)
1157 if (surf_network_model)
1160 set_update_mechanism();
1162 surf_network_model_init_internal();
1163 net_define_callbacks();
1164 xbt_dynar_push(model_list, &surf_network_model);
1165 network_solve = lmm_solve;
1167 xbt_cfg_setdefault_double(_surf_cfg_set, "network/latency_factor", 13.01);
1168 xbt_cfg_setdefault_double(_surf_cfg_set, "network/bandwidth_factor",0.97);
1169 xbt_cfg_setdefault_double(_surf_cfg_set, "network/weight_S", 20537);
1172 /***************************************************************************/
1173 /* The nice TCP sharing model designed by Loris Marchal and Henri Casanova */
1174 /***************************************************************************/
1175 /* @TechReport{ rr-lip2002-40, */
1176 /* author = {Henri Casanova and Loris Marchal}, */
1177 /* institution = {LIP}, */
1178 /* title = {A Network Model for Simulation of Grid Application}, */
1179 /* number = {2002-40}, */
1180 /* month = {oct}, */
1183 void surf_network_model_init_CM02(void)
1186 if (surf_network_model)
1189 set_update_mechanism();
1190 surf_network_model_init_internal();
1191 net_define_callbacks();
1192 xbt_dynar_push(model_list, &surf_network_model);
1193 network_solve = lmm_solve;
1195 xbt_cfg_setdefault_double(_surf_cfg_set, "network/latency_factor", 1.0);
1196 xbt_cfg_setdefault_double(_surf_cfg_set, "network/bandwidth_factor", 1.0);
1197 xbt_cfg_setdefault_double(_surf_cfg_set, "network/weight_S", 0.0);
1200 /***************************************************************************/
1201 /* The models from Steven H. Low */
1202 /***************************************************************************/
1203 /* @article{Low03, */
1204 /* author={Steven H. Low}, */
1205 /* title={A Duality Model of {TCP} and Queue Management Algorithms}, */
1207 /* journal={{IEEE/ACM} Transactions on Networking}, */
1208 /* volume={11}, number={4}, */
1210 void surf_network_model_init_Reno(void)
1212 if (surf_network_model)
1215 set_update_mechanism();
1216 surf_network_model_init_internal();
1217 net_define_callbacks();
1219 xbt_dynar_push(model_list, &surf_network_model);
1220 lmm_set_default_protocol_function(func_reno_f, func_reno_fp,
1222 network_solve = lagrange_solve;
1224 xbt_cfg_setdefault_double(_surf_cfg_set, "network/latency_factor", 10.4);
1225 xbt_cfg_setdefault_double(_surf_cfg_set, "network/bandwidth_factor",
1227 xbt_cfg_setdefault_double(_surf_cfg_set, "network/weight_S", 8775);
1231 void surf_network_model_init_Reno2(void)
1233 if (surf_network_model)
1236 set_update_mechanism();
1237 surf_network_model_init_internal();
1238 net_define_callbacks();
1240 xbt_dynar_push(model_list, &surf_network_model);
1241 lmm_set_default_protocol_function(func_reno2_f, func_reno2_fp,
1243 network_solve = lagrange_solve;
1245 xbt_cfg_setdefault_double(_surf_cfg_set, "network/latency_factor", 10.4);
1246 xbt_cfg_setdefault_double(_surf_cfg_set, "network/bandwidth_factor",
1248 xbt_cfg_setdefault_double(_surf_cfg_set, "network/weight_S_parameter",
1252 void surf_network_model_init_Vegas(void)
1254 if (surf_network_model)
1257 set_update_mechanism();
1258 surf_network_model_init_internal();
1259 net_define_callbacks();
1261 xbt_dynar_push(model_list, &surf_network_model);
1262 lmm_set_default_protocol_function(func_vegas_f, func_vegas_fp,
1264 network_solve = lagrange_solve;
1266 xbt_cfg_setdefault_double(_surf_cfg_set, "network/latency_factor", 10.4);
1267 xbt_cfg_setdefault_double(_surf_cfg_set, "network/bandwidth_factor",
1269 xbt_cfg_setdefault_double(_surf_cfg_set, "network/weight_S", 8775);