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(surf_action_network_CM02_t action, 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);
322 if (action->category) xbt_free (action->category);
324 surf_action_free(&action);
332 static void net_action_cancel(surf_action_t action)
334 XBT_DEBUG("cancel action %p", action);
335 surf_network_model->action_state_set(action, SURF_ACTION_FAILED);
336 if (network_update_mechanism == UM_LAZY) { // remove action from the heap
337 xbt_swag_remove(action, net_modified_set);
338 surf_action_lmm_heap_remove(net_action_heap,(surf_action_lmm_t) action);
342 void net_action_recycle(surf_action_t action)
347 #ifdef HAVE_LATENCY_BOUND_TRACKING
348 int net_get_link_latency_limited(surf_action_t action)
350 return action->latency_limited;
354 double net_action_get_remains(surf_action_t action)
356 XBT_IN("(%p)", action);
357 /* update remains before return it */
358 if (network_update_mechanism == UM_LAZY) /* update remains before return it */
359 net_update_action_remaining_lazy((surf_action_network_CM02_t)action,
362 return action->remains;
365 static void net_update_action_remaining_lazy(surf_action_network_CM02_t action, double now)
369 if (GENERIC_LMM_ACTION(action).suspended != 0)
372 delta = now - GENERIC_LMM_ACTION(action).last_update;
374 double_update(&(((surf_action_t)action)->remains),
375 GENERIC_LMM_ACTION(action).last_value * delta);
377 if (((surf_action_t)action)->max_duration != NO_MAX_DURATION)
378 double_update(&(((surf_action_t)action)->max_duration), delta);
380 if ((((surf_action_t)action)->remains <= 0) &&
381 (lmm_get_variable_weight(GENERIC_LMM_ACTION(action).variable) > 0)) {
382 ((surf_action_t)action)->finish = surf_get_clock();
383 surf_network_model->action_state_set((surf_action_t) action,
386 surf_action_lmm_heap_remove(net_action_heap,(surf_action_lmm_t)action);
387 } else if (((((surf_action_t)action)->max_duration != NO_MAX_DURATION)
388 && (((surf_action_t)action)->max_duration <= 0))) {
389 ((surf_action_t)action)->finish = surf_get_clock();
390 surf_network_model->action_state_set((surf_action_t) action,
392 surf_action_lmm_heap_remove(net_action_heap,(surf_action_lmm_t)action);
395 GENERIC_LMM_ACTION(action).last_update = now;
396 GENERIC_LMM_ACTION(action).last_value = lmm_variable_getvalue(GENERIC_LMM_ACTION(action).variable);
399 static double net_share_resources_full(double now)
401 s_surf_action_lmm_t s_action;
402 surf_action_network_CM02_t action = NULL;
403 xbt_swag_t running_actions =
404 surf_network_model->states.running_action_set;
407 min = generic_maxmin_share_resources(running_actions,
408 xbt_swag_offset(s_action,
410 network_maxmin_system,
413 #define VARIABLE(action) (*((lmm_variable_t*)(((char *) (action)) + xbt_swag_offset(s_action, variable) )))
415 xbt_swag_foreach(action, running_actions) {
416 #ifdef HAVE_LATENCY_BOUND_TRACKING
417 if (lmm_is_variable_limited_by_latency(GENERIC_LMM_ACTION(action).variable)) {
418 action->latency_limited = 1;
420 action->latency_limited = 0;
423 if (action->latency > 0) {
424 min = (min < 0) ? action->latency : min(min, action->latency);
428 XBT_DEBUG("Min of share resources %f", min);
433 static double net_share_resources_lazy(double now)
435 surf_action_network_CM02_t action = NULL;
440 ("Before share resources, the size of modified actions set is %d",
441 xbt_swag_size(net_modified_set));
443 lmm_solve(network_maxmin_system);
446 ("After share resources, The size of modified actions set is %d",
447 xbt_swag_size(net_modified_set));
449 while((action = xbt_swag_extract(net_modified_set))) {
450 int max_dur_flag = 0;
452 if (GENERIC_ACTION(action).state_set !=
453 surf_network_model->states.running_action_set)
456 /* bogus priority, skip it */
457 if (GENERIC_ACTION(action).priority <= 0)
460 net_update_action_remaining_lazy(action,now);
463 value = lmm_variable_getvalue(GENERIC_LMM_ACTION(action).variable);
465 if (GENERIC_ACTION(action).remains > 0) {
466 value = GENERIC_ACTION(action).remains / value;
474 if ((GENERIC_ACTION(action).max_duration != NO_MAX_DURATION)
476 || GENERIC_ACTION(action).start +
477 GENERIC_ACTION(action).max_duration < min)) {
478 min = GENERIC_ACTION(action).start +
479 GENERIC_ACTION(action).max_duration;
483 XBT_DEBUG("Action(%p) Start %lf Finish %lf Max_duration %lf", action,
484 GENERIC_ACTION(action).start, now + value,
485 GENERIC_ACTION(action).max_duration);
488 surf_action_lmm_heap_remove(net_action_heap,(surf_action_lmm_t)action);
489 surf_action_lmm_heap_insert(net_action_heap,(surf_action_lmm_t)action, min, max_dur_flag ? MAX_DURATION : NORMAL);
490 XBT_DEBUG("Insert at heap action(%p) min %lf now %lf", action, min,
492 } else DIE_IMPOSSIBLE;
495 //hereafter must have already the min value for this resource model
496 if (xbt_heap_size(net_action_heap) > 0)
497 min = xbt_heap_maxkey(net_action_heap) - now;
501 XBT_DEBUG("The minimum with the HEAP %lf", min);
506 static void net_update_actions_state_full(double now, double delta)
509 surf_action_network_CM02_t action = NULL;
510 surf_action_network_CM02_t next_action = NULL;
511 xbt_swag_t running_actions =
512 surf_network_model->states.running_action_set;
514 xbt_swag_t failed_actions =
515 surf_network_model->states.failed_action_set;
518 xbt_swag_foreach_safe(action, next_action, running_actions) {
520 if (action->latency > 0) {
521 if (action->latency > deltap) {
522 double_update(&(action->latency), deltap);
525 double_update(&(deltap), action->latency);
526 action->latency = 0.0;
528 if ((action->latency == 0.0) && !(GENERIC_LMM_ACTION(action).suspended))
529 lmm_update_variable_weight(network_maxmin_system, GENERIC_LMM_ACTION(action).variable,
533 if (TRACE_is_enabled()) {
534 int n = lmm_get_number_of_cnst_from_var(network_maxmin_system, GENERIC_LMM_ACTION(action).variable);
536 for (i = 0; i < n; i++){
537 lmm_constraint_t constraint = lmm_get_cnst_from_var(network_maxmin_system,
538 GENERIC_LMM_ACTION(action).variable,
540 link_CM02_t link = lmm_constraint_id(constraint);
541 TRACE_surf_link_set_utilization(link->lmm_resource.generic_resource.name,
542 ((surf_action_t)action)->category,
543 (lmm_variable_getvalue(GENERIC_LMM_ACTION(action).variable)*
544 lmm_get_cnst_weight_from_var(network_maxmin_system,
545 GENERIC_LMM_ACTION(action).variable,
552 if (!lmm_get_number_of_cnst_from_var
553 (network_maxmin_system, GENERIC_LMM_ACTION(action).variable)) {
554 /* There is actually no link used, hence an infinite bandwidth.
555 * This happens often when using models like vivaldi.
556 * In such case, just make sure that the action completes immediately.
558 double_update(&(GENERIC_ACTION(action).remains),
559 GENERIC_ACTION(action).remains);
561 double_update(&(GENERIC_ACTION(action).remains),
562 lmm_variable_getvalue(GENERIC_LMM_ACTION(action).variable) * deltap);
563 if (((surf_action_t)action)->max_duration != NO_MAX_DURATION)
564 double_update(&(((surf_action_t)action)->max_duration), delta);
566 if ((GENERIC_ACTION(action).remains <= 0) &&
567 (lmm_get_variable_weight(GENERIC_LMM_ACTION(action).variable) > 0)) {
568 ((surf_action_t)action)->finish = surf_get_clock();
569 surf_network_model->action_state_set((surf_action_t) action,
574 } else if ((((surf_action_t)action)->max_duration != NO_MAX_DURATION)
575 && (((surf_action_t)action)->max_duration <= 0)) {
576 ((surf_action_t)action)->finish = surf_get_clock();
577 surf_network_model->action_state_set((surf_action_t) action,
587 static void net_update_actions_state_lazy(double now, double delta)
589 surf_action_network_CM02_t action = NULL;
591 while ((xbt_heap_size(net_action_heap) > 0)
592 && (double_equals(xbt_heap_maxkey(net_action_heap), now))) {
593 action = xbt_heap_pop(net_action_heap);
594 XBT_DEBUG("Action %p: finish", action);
595 GENERIC_ACTION(action).finish = surf_get_clock();
597 if (TRACE_is_enabled()) {
598 int n = lmm_get_number_of_cnst_from_var(network_maxmin_system, GENERIC_LMM_ACTION(action).variable);
600 for (i = 0; i < n; i++){
601 lmm_constraint_t constraint = lmm_get_cnst_from_var(network_maxmin_system,
602 GENERIC_LMM_ACTION(action).variable,
604 link_CM02_t link = lmm_constraint_id(constraint);
605 TRACE_surf_link_set_utilization(link->lmm_resource.generic_resource.name,
606 ((surf_action_t)action)->category,
607 (lmm_variable_getvalue(GENERIC_LMM_ACTION(action).variable)*
608 lmm_get_cnst_weight_from_var(network_maxmin_system,
609 GENERIC_LMM_ACTION(action).variable,
611 GENERIC_LMM_ACTION(action).last_update,
612 now - GENERIC_LMM_ACTION(action).last_update);
617 // if I am wearing a latency hat
618 if (GENERIC_LMM_ACTION(action).hat == LATENCY) {
619 lmm_update_variable_weight(network_maxmin_system, GENERIC_LMM_ACTION(action).variable,
621 surf_action_lmm_heap_remove(net_action_heap,(surf_action_lmm_t)action);
622 GENERIC_LMM_ACTION(action).last_update = surf_get_clock();
624 // if I am wearing a max_duration or normal hat
625 } else if (GENERIC_LMM_ACTION(action).hat == MAX_DURATION ||
626 GENERIC_LMM_ACTION(action).hat == NORMAL) {
627 // no need to communicate anymore
628 // assume that flows that reached max_duration have remaining of 0
629 GENERIC_ACTION(action).remains = 0;
630 ((surf_action_t)action)->finish = surf_get_clock();
631 surf_network_model->action_state_set((surf_action_t) action,
633 surf_action_lmm_heap_remove(net_action_heap,(surf_action_lmm_t)action);
639 static void net_update_resource_state(void *id,
640 tmgr_trace_event_t event_type,
641 double value, double date)
643 link_CM02_t nw_link = id;
644 /* printf("[" "%lg" "] Asking to update network card \"%s\" with value " */
645 /* "%lg" " for event %p\n", surf_get_clock(), nw_link->name, */
646 /* value, event_type); */
648 if (event_type == nw_link->lmm_resource.power.event) {
650 sg_weight_S_parameter / value - sg_weight_S_parameter /
651 (nw_link->lmm_resource.power.peak *
652 nw_link->lmm_resource.power.scale);
653 lmm_variable_t var = NULL;
654 lmm_element_t elem = NULL;
655 surf_action_network_CM02_t action = NULL;
657 nw_link->lmm_resource.power.peak = value;
658 lmm_update_constraint_bound(network_maxmin_system,
659 nw_link->lmm_resource.constraint,
660 sg_bandwidth_factor *
661 (nw_link->lmm_resource.power.peak *
662 nw_link->lmm_resource.power.scale));
664 TRACE_surf_link_set_bandwidth(date,
666 *) (((nw_link->lmm_resource).
667 generic_resource).name),
668 sg_bandwidth_factor *
669 (nw_link->lmm_resource.power.peak *
670 nw_link->lmm_resource.power.scale));
672 if (sg_weight_S_parameter > 0) {
673 while ((var = lmm_get_var_from_cnst
674 (network_maxmin_system, nw_link->lmm_resource.constraint,
676 action = lmm_variable_id(var);
677 action->weight += delta;
678 if (!(GENERIC_LMM_ACTION(action).suspended))
679 lmm_update_variable_weight(network_maxmin_system,
680 GENERIC_LMM_ACTION(action).variable, action->weight);
683 if (tmgr_trace_event_free(event_type))
684 nw_link->lmm_resource.power.event = NULL;
685 } else if (event_type == nw_link->lat_event) {
686 double delta = value - nw_link->lat_current;
687 lmm_variable_t var = NULL;
688 lmm_element_t elem = NULL;
689 surf_action_network_CM02_t action = NULL;
691 nw_link->lat_current = value;
692 while ((var = lmm_get_var_from_cnst
693 (network_maxmin_system, nw_link->lmm_resource.constraint,
695 action = lmm_variable_id(var);
696 action->lat_current += delta;
697 action->weight += delta;
698 if (action->rate < 0)
699 lmm_update_variable_bound(network_maxmin_system, GENERIC_LMM_ACTION(action).variable,
700 sg_tcp_gamma / (2.0 *
701 action->lat_current));
703 lmm_update_variable_bound(network_maxmin_system, GENERIC_LMM_ACTION(action).variable,
705 sg_tcp_gamma / (2.0 *
709 if (action->rate < sg_tcp_gamma / (2.0 * action->lat_current)) {
710 XBT_INFO("Flow is limited BYBANDWIDTH");
712 XBT_INFO("Flow is limited BYLATENCY, latency of flow is %f",
713 action->lat_current);
716 if (!(GENERIC_LMM_ACTION(action).suspended))
717 lmm_update_variable_weight(network_maxmin_system, GENERIC_LMM_ACTION(action).variable,
721 if (tmgr_trace_event_free(event_type))
722 nw_link->lat_event = NULL;
723 } else if (event_type == nw_link->lmm_resource.state_event) {
725 nw_link->lmm_resource.state_current = SURF_RESOURCE_ON;
727 lmm_constraint_t cnst = nw_link->lmm_resource.constraint;
728 lmm_variable_t var = NULL;
729 lmm_element_t elem = NULL;
731 nw_link->lmm_resource.state_current = SURF_RESOURCE_OFF;
732 while ((var = lmm_get_var_from_cnst
733 (network_maxmin_system, cnst, &elem))) {
734 surf_action_t action = lmm_variable_id(var);
736 if (surf_action_state_get(action) == SURF_ACTION_RUNNING ||
737 surf_action_state_get(action) == SURF_ACTION_READY) {
738 action->finish = date;
739 surf_network_model->action_state_set(action, SURF_ACTION_FAILED);
743 if (tmgr_trace_event_free(event_type))
744 nw_link->lmm_resource.state_event = NULL;
746 XBT_CRITICAL("Unknown event ! \n");
751 ("There were a resource state event, need to update actions related to the constraint (%p)",
752 nw_link->lmm_resource.constraint);
757 static surf_action_t net_communicate(sg_routing_edge_t src,
758 sg_routing_edge_t dst,
759 double size, double rate)
764 surf_action_network_CM02_t action = NULL;
765 double bandwidth_bound;
766 double latency = 0.0;
767 xbt_dynar_t back_route = NULL;
768 int constraints_per_variable = 0;
770 xbt_dynar_t route = xbt_dynar_new(sizeof(sg_routing_link_t), NULL);
772 XBT_IN("(%s,%s,%g,%g)", src->name, dst->name, size, rate);
774 routing_get_route_and_latency(src, dst, &route, &latency);
775 xbt_assert(!xbt_dynar_is_empty(route) || latency,
776 "You're trying to send data from %s to %s but there is no connection at all between these two hosts.",
777 src->name, dst->name);
779 xbt_dynar_foreach(route, i, link) {
780 if (link->lmm_resource.state_current == SURF_RESOURCE_OFF) {
785 if (sg_network_crosstraffic == 1) {
786 routing_get_route_and_latency(dst, src, &back_route, NULL);
787 xbt_dynar_foreach(back_route, i, link) {
788 if (link->lmm_resource.state_current == SURF_RESOURCE_OFF) {
796 surf_action_new(sizeof(s_surf_action_network_CM02_t), size,
797 surf_network_model, failed);
798 #ifdef HAVE_LATENCY_BOUND_TRACKING
799 action->latency_limited = 0;
801 action->weight = action->latency = latency;
803 xbt_swag_insert(action, ((surf_action_t)action)->state_set);
805 if (network_update_mechanism == UM_LAZY) {
806 GENERIC_LMM_ACTION(action).index_heap = -1;
807 GENERIC_LMM_ACTION(action).last_update = surf_get_clock();
810 bandwidth_bound = -1.0;
811 if (sg_weight_S_parameter > 0) {
812 xbt_dynar_foreach(route, i, link) {
814 sg_weight_S_parameter /
815 (link->lmm_resource.power.peak * link->lmm_resource.power.scale);
818 xbt_dynar_foreach(route, i, link) {
819 double bb = bandwidth_factor_callback(size) *
820 (link->lmm_resource.power.peak * link->lmm_resource.power.scale);
822 (bandwidth_bound < 0.0) ? bb : min(bandwidth_bound, bb);
825 action->lat_current = action->latency;
826 action->latency *= latency_factor_callback(size);
828 bandwidth_constraint_callback(action->rate, bandwidth_bound, size);
830 xbt_assert(!xbt_dynar_is_empty(route),
831 "Using a model with a gap (e.g., SMPI) with a platform without links (e.g. vivaldi)!!!");
833 link = *(link_CM02_t *) xbt_dynar_get_ptr(route, 0);
834 gap_append(size, link, action);
835 XBT_DEBUG("Comm %p: %s -> %s gap=%f (lat=%f)",
836 action, src->name, dst->name, action->sender.gap,
840 constraints_per_variable = xbt_dynar_length(route);
841 if (back_route != NULL)
842 constraints_per_variable += xbt_dynar_length(back_route);
844 if (action->latency > 0) {
845 GENERIC_LMM_ACTION(action).variable =
846 lmm_variable_new(network_maxmin_system, action, 0.0, -1.0,
847 constraints_per_variable);
848 if (network_update_mechanism == UM_LAZY) {
849 // add to the heap the event when the latency is payed
850 XBT_DEBUG("Added action (%p) one latency event at date %f", action,
851 action->latency + GENERIC_LMM_ACTION(action).last_update);
852 surf_action_lmm_heap_insert(net_action_heap,(surf_action_lmm_t)action, action->latency + GENERIC_LMM_ACTION(action).last_update,
853 xbt_dynar_is_empty(route) ? NORMAL : LATENCY);
856 GENERIC_LMM_ACTION(action).variable =
857 lmm_variable_new(network_maxmin_system, action, 1.0, -1.0,
858 constraints_per_variable);
860 if (action->rate < 0) {
861 lmm_update_variable_bound(network_maxmin_system, GENERIC_LMM_ACTION(action).variable,
862 (action->lat_current > 0) ?
863 sg_tcp_gamma / (2.0 *
864 action->lat_current) : -1.0);
866 lmm_update_variable_bound(network_maxmin_system, GENERIC_LMM_ACTION(action).variable,
867 (action->lat_current > 0) ?
869 sg_tcp_gamma / (2.0 *
870 action->lat_current))
874 xbt_dynar_foreach(route, i, link) {
875 lmm_expand(network_maxmin_system, link->lmm_resource.constraint,
876 GENERIC_LMM_ACTION(action).variable, 1.0);
879 if (sg_network_crosstraffic == 1) {
880 XBT_DEBUG("Fullduplex active adding backward flow using 5%%");
881 xbt_dynar_foreach(back_route, i, link) {
882 lmm_expand(network_maxmin_system, link->lmm_resource.constraint,
883 GENERIC_LMM_ACTION(action).variable, .05);
887 xbt_dynar_free(&route);
890 return (surf_action_t) action;
893 static xbt_dynar_t net_get_route(void *src, void *dst)
895 xbt_dynar_t route = NULL;
896 routing_get_route_and_latency(src, dst, &route, NULL);
900 static double net_get_link_bandwidth(const void *link)
902 surf_resource_lmm_t lmm = (surf_resource_lmm_t) link;
903 return lmm->power.peak * lmm->power.scale;
906 static double net_get_link_latency(const void *link)
908 return ((link_CM02_t) link)->lat_current;
911 static int net_link_shared(const void *link)
914 lmm_constraint_is_shared(((surf_resource_lmm_t) link)->constraint);
917 static void net_action_suspend(surf_action_t action)
919 ((surf_action_network_CM02_t) action)->generic_lmm_action.suspended = 1;
920 lmm_update_variable_weight(network_maxmin_system,
921 ((surf_action_network_CM02_t)
922 action)->generic_lmm_action.variable, 0.0);
924 if (network_update_mechanism == UM_LAZY) // remove action from the heap
925 surf_action_lmm_heap_remove(net_action_heap,(surf_action_lmm_t)action);
928 static void net_action_resume(surf_action_t action)
930 if (((surf_action_network_CM02_t) action)->generic_lmm_action.suspended) {
931 lmm_update_variable_weight(network_maxmin_system,
932 ((surf_action_network_CM02_t)
933 action)->generic_lmm_action.variable,
934 ((surf_action_network_CM02_t)
936 ((surf_action_network_CM02_t) action)->generic_lmm_action.suspended = 0;
937 if (network_update_mechanism == UM_LAZY) // remove action from the heap
938 surf_action_lmm_heap_remove(net_action_heap,(surf_action_lmm_t)action);
942 static int net_action_is_suspended(surf_action_t action)
944 return ((surf_action_network_CM02_t) action)->generic_lmm_action.suspended;
947 void net_action_set_max_duration(surf_action_t action, double duration)
949 action->max_duration = duration;
950 if (network_update_mechanism == UM_LAZY) // remove action from the heap
951 surf_action_lmm_heap_remove(net_action_heap,(surf_action_lmm_t)action);
955 static void net_action_set_category(surf_action_t action,
956 const char *category)
958 action->category = xbt_strdup(category);
962 static void net_finalize(void)
964 surf_model_exit(surf_network_model);
965 surf_network_model = NULL;
967 lmm_system_free(network_maxmin_system);
968 network_maxmin_system = NULL;
970 if (network_update_mechanism == UM_LAZY) {
971 xbt_heap_free(net_action_heap);
972 xbt_swag_free(net_modified_set);
976 xbt_dynar_free(&smpi_bw_factor);
978 xbt_dynar_free(&smpi_lat_factor);
981 static void smpi_gap_append(double size, const link_CM02_t link,
982 surf_action_network_CM02_t action)
984 const char *src = link->lmm_resource.generic_resource.name;
986 surf_action_network_CM02_t last_action;
989 if (sg_sender_gap > 0.0) {
991 gap_lookup = xbt_dict_new();
993 fifo = (xbt_fifo_t) xbt_dict_get_or_null(gap_lookup, src);
994 action->sender.gap = 0.0;
995 if (fifo && xbt_fifo_size(fifo) > 0) {
996 /* Compute gap from last send */
998 (surf_action_network_CM02_t)
999 xbt_fifo_get_item_content(xbt_fifo_get_last_item(fifo));
1000 bw = net_get_link_bandwidth(link);
1001 action->sender.gap =
1002 last_action->sender.gap + max(sg_sender_gap,
1003 last_action->sender.size / bw);
1004 action->latency += action->sender.gap;
1006 /* Append action as last send */
1007 action->sender.link_name = link->lmm_resource.generic_resource.name;
1009 (xbt_fifo_t) xbt_dict_get_or_null(gap_lookup,
1010 action->sender.link_name);
1012 fifo = xbt_fifo_new();
1013 xbt_dict_set(gap_lookup, action->sender.link_name, fifo, NULL);
1015 action->sender.fifo_item = xbt_fifo_push(fifo, action);
1016 action->sender.size = size;
1020 static void smpi_gap_remove(surf_action_network_CM02_t action)
1025 if (sg_sender_gap > 0.0 && action->sender.link_name
1026 && action->sender.fifo_item) {
1028 (xbt_fifo_t) xbt_dict_get_or_null(gap_lookup,
1029 action->sender.link_name);
1030 xbt_fifo_remove_item(fifo, action->sender.fifo_item);
1031 size = xbt_fifo_size(fifo);
1033 xbt_fifo_free(fifo);
1034 xbt_dict_remove(gap_lookup, action->sender.link_name);
1035 size = xbt_dict_length(gap_lookup);
1037 xbt_dict_free(&gap_lookup);
1043 static void surf_network_model_init_internal(void)
1045 s_surf_action_network_CM02_t comm;
1046 surf_network_model = surf_model_init();
1048 surf_network_model->name = "network";
1049 surf_network_model->action_unref = net_action_unref;
1050 surf_network_model->action_cancel = net_action_cancel;
1051 surf_network_model->action_recycle = net_action_recycle;
1052 surf_network_model->get_remains = net_action_get_remains;
1053 #ifdef HAVE_LATENCY_BOUND_TRACKING
1054 surf_network_model->get_latency_limited = net_get_link_latency_limited;
1057 surf_network_model->set_category = net_action_set_category;
1060 surf_network_model->model_private->resource_used = net_resource_used;
1061 if (network_update_mechanism == UM_LAZY) {
1062 surf_network_model->model_private->share_resources =
1063 net_share_resources_lazy;
1064 surf_network_model->model_private->update_actions_state =
1065 net_update_actions_state_lazy;
1066 } else if (network_update_mechanism == UM_FULL) {
1067 surf_network_model->model_private->share_resources =
1068 net_share_resources_full;
1069 surf_network_model->model_private->update_actions_state =
1070 net_update_actions_state_full;
1073 surf_network_model->model_private->update_resource_state =
1074 net_update_resource_state;
1075 surf_network_model->model_private->finalize = net_finalize;
1077 surf_network_model->suspend = net_action_suspend;
1078 surf_network_model->resume = net_action_resume;
1079 surf_network_model->is_suspended = net_action_is_suspended;
1080 surf_cpu_model->set_max_duration = net_action_set_max_duration;
1082 surf_network_model->extension.network.communicate = net_communicate;
1083 surf_network_model->extension.network.get_route = net_get_route;
1084 surf_network_model->extension.network.get_link_bandwidth =
1085 net_get_link_bandwidth;
1086 surf_network_model->extension.network.get_link_latency =
1087 net_get_link_latency;
1088 surf_network_model->extension.network.link_shared = net_link_shared;
1089 surf_network_model->extension.network.add_traces = net_add_traces;
1090 surf_network_model->extension.network.create_resource =
1091 net_create_resource;
1093 if (!network_maxmin_system)
1094 network_maxmin_system = lmm_system_new(net_selective_update);
1096 routing_model_create(net_create_resource("__loopback__",
1097 498000000, NULL, 0.000015, NULL,
1098 SURF_RESOURCE_ON, NULL,
1099 SURF_LINK_FATPIPE, NULL));
1101 if (network_update_mechanism == UM_LAZY) {
1102 net_action_heap = xbt_heap_new(8, NULL);
1103 xbt_heap_set_update_callback(net_action_heap,
1104 surf_action_lmm_update_index_heap);
1106 xbt_swag_new(xbt_swag_offset(comm, generic_lmm_action.action_list_hookup));
1107 network_maxmin_system->keep_track = net_modified_set;
1111 static void set_update_mechanism(void)
1113 char *optim = xbt_cfg_get_string(_surf_cfg_set, "network/optim");
1115 xbt_cfg_get_int(_surf_cfg_set, "network/maxmin_selective_update");
1117 if (!strcmp(optim, "Full")) {
1118 network_update_mechanism = UM_FULL;
1119 net_selective_update = select;
1120 } else if (!strcmp(optim, "Lazy")) {
1121 network_update_mechanism = UM_LAZY;
1122 net_selective_update = 1;
1123 xbt_assert((select == 1)
1125 (xbt_cfg_is_default_value
1126 (_surf_cfg_set, "network/maxmin_selective_update")),
1127 "Disabling selective update while using the lazy update mechanism is dumb!");
1129 xbt_die("Unsupported optimization (%s) for this model", optim);
1133 /************************************************************************/
1134 /* New model based on LV08 and experimental results of MPI ping-pongs */
1135 /************************************************************************/
1136 /* @Inproceedings{smpi_ipdps, */
1137 /* author={Pierre-Nicolas Clauss and Mark Stillwell and Stéphane Genaud and Frédéric Suter and Henri Casanova and Martin Quinson}, */
1138 /* title={Single Node On-Line Simulation of {MPI} Applications with SMPI}, */
1139 /* booktitle={25th IEEE International Parallel and Distributed Processing Symposium (IPDPS'11)}, */
1140 /* address={Anchorage (Alaska) USA}, */
1144 void surf_network_model_init_SMPI(void)
1147 if (surf_network_model)
1149 set_update_mechanism();
1151 surf_network_model_init_internal();
1152 latency_factor_callback = &smpi_latency_factor;
1153 bandwidth_factor_callback = &smpi_bandwidth_factor;
1154 bandwidth_constraint_callback = &smpi_bandwidth_constraint;
1155 gap_append = &smpi_gap_append;
1156 gap_remove = &smpi_gap_remove;
1157 net_define_callbacks();
1158 xbt_dynar_push(model_list, &surf_network_model);
1159 network_solve = lmm_solve;
1161 xbt_cfg_setdefault_double(_surf_cfg_set, "network/sender_gap", 10e-6);
1162 xbt_cfg_setdefault_double(_surf_cfg_set, "network/weight_S", 8775);
1165 /************************************************************************/
1166 /* New model based on optimizations discussed during Pedro Velho's thesis*/
1167 /************************************************************************/
1168 /* @techreport{VELHO:2011:HAL-00646896:1, */
1169 /* url = {http://hal.inria.fr/hal-00646896/en/}, */
1170 /* title = {{Flow-level network models: have we reached the limits?}}, */
1171 /* author = {Velho, Pedro and Schnorr, Lucas and Casanova, Henri and Legrand, Arnaud}, */
1172 /* type = {Rapport de recherche}, */
1173 /* institution = {INRIA}, */
1174 /* number = {RR-7821}, */
1175 /* year = {2011}, */
1177 /* pdf = {http://hal.inria.fr/hal-00646896/PDF/rr-validity.pdf}, */
1179 void surf_network_model_init_LegrandVelho(void)
1181 if (surf_network_model)
1184 set_update_mechanism();
1186 surf_network_model_init_internal();
1187 net_define_callbacks();
1188 xbt_dynar_push(model_list, &surf_network_model);
1189 network_solve = lmm_solve;
1191 xbt_cfg_setdefault_double(_surf_cfg_set, "network/latency_factor",
1193 xbt_cfg_setdefault_double(_surf_cfg_set, "network/bandwidth_factor",
1195 xbt_cfg_setdefault_double(_surf_cfg_set, "network/weight_S", 20537);
1198 /***************************************************************************/
1199 /* The nice TCP sharing model designed by Loris Marchal and Henri Casanova */
1200 /***************************************************************************/
1201 /* @TechReport{ rr-lip2002-40, */
1202 /* author = {Henri Casanova and Loris Marchal}, */
1203 /* institution = {LIP}, */
1204 /* title = {A Network Model for Simulation of Grid Application}, */
1205 /* number = {2002-40}, */
1206 /* month = {oct}, */
1209 void surf_network_model_init_CM02(void)
1212 if (surf_network_model)
1215 set_update_mechanism();
1216 surf_network_model_init_internal();
1217 net_define_callbacks();
1218 xbt_dynar_push(model_list, &surf_network_model);
1219 network_solve = lmm_solve;
1221 xbt_cfg_setdefault_double(_surf_cfg_set, "network/latency_factor", 1.0);
1222 xbt_cfg_setdefault_double(_surf_cfg_set, "network/bandwidth_factor",
1224 xbt_cfg_setdefault_double(_surf_cfg_set, "network/weight_S", 0.0);
1227 /***************************************************************************/
1228 /* The models from Steven H. Low */
1229 /***************************************************************************/
1230 /* @article{Low03, */
1231 /* author={Steven H. Low}, */
1232 /* title={A Duality Model of {TCP} and Queue Management Algorithms}, */
1234 /* journal={{IEEE/ACM} Transactions on Networking}, */
1235 /* volume={11}, number={4}, */
1237 void surf_network_model_init_Reno(void)
1239 if (surf_network_model)
1242 set_update_mechanism();
1243 surf_network_model_init_internal();
1244 net_define_callbacks();
1246 xbt_dynar_push(model_list, &surf_network_model);
1247 lmm_set_default_protocol_function(func_reno_f, func_reno_fp,
1249 network_solve = lagrange_solve;
1251 xbt_cfg_setdefault_double(_surf_cfg_set, "network/latency_factor", 10.4);
1252 xbt_cfg_setdefault_double(_surf_cfg_set, "network/bandwidth_factor",
1254 xbt_cfg_setdefault_double(_surf_cfg_set, "network/weight_S", 8775);
1258 void surf_network_model_init_Reno2(void)
1260 if (surf_network_model)
1263 set_update_mechanism();
1264 surf_network_model_init_internal();
1265 net_define_callbacks();
1267 xbt_dynar_push(model_list, &surf_network_model);
1268 lmm_set_default_protocol_function(func_reno2_f, func_reno2_fp,
1270 network_solve = lagrange_solve;
1272 xbt_cfg_setdefault_double(_surf_cfg_set, "network/latency_factor", 10.4);
1273 xbt_cfg_setdefault_double(_surf_cfg_set, "network/bandwidth_factor",
1275 xbt_cfg_setdefault_double(_surf_cfg_set, "network/weight_S_parameter",
1279 void surf_network_model_init_Vegas(void)
1281 if (surf_network_model)
1284 set_update_mechanism();
1285 surf_network_model_init_internal();
1286 net_define_callbacks();
1288 xbt_dynar_push(model_list, &surf_network_model);
1289 lmm_set_default_protocol_function(func_vegas_f, func_vegas_fp,
1291 network_solve = lagrange_solve;
1293 xbt_cfg_setdefault_double(_surf_cfg_set, "network/latency_factor", 10.4);
1294 xbt_cfg_setdefault_double(_surf_cfg_set, "network/bandwidth_factor",
1296 xbt_cfg_setdefault_double(_surf_cfg_set, "network/weight_S", 8775);