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 void (*network_solve) (lmm_system_t) = NULL;
38 xbt_dynar_t smpi_bw_factor = NULL;
39 xbt_dynar_t smpi_lat_factor = NULL;
41 typedef struct s_smpi_factor *smpi_factor_t;
42 typedef struct s_smpi_factor {
48 double sg_sender_gap = 0.0;
49 double sg_latency_factor = 1.0; /* default value; can be set by model or from command line */
50 double sg_bandwidth_factor = 1.0; /* default value; can be set by model or from command line */
51 double sg_weight_S_parameter = 0.0; /* default value; can be set by model or from command line */
53 double sg_tcp_gamma = 0.0;
54 int sg_network_crosstraffic = 0;
56 xbt_dict_t gap_lookup = NULL;
58 static int net_action_is_suspended(surf_action_t action);
59 static void net_update_action_remaining_lazy(surf_action_network_CM02_t action, double now);
61 /******************************************************************************/
62 /* Factors callbacks */
63 /******************************************************************************/
64 static double constant_latency_factor(double size)
66 return sg_latency_factor;
69 static double constant_bandwidth_factor(double size)
71 return sg_bandwidth_factor;
74 static double constant_bandwidth_constraint(double rate, double bound,
80 /**********************/
82 /**********************/
83 static xbt_dynar_t parse_factor(const char *smpi_coef_string)
86 unsigned int iter = 0;
88 xbt_dynar_t smpi_factor, radical_elements, radical_elements2 = NULL;
90 smpi_factor = xbt_dynar_new(sizeof(s_smpi_factor_t), NULL);
91 radical_elements = xbt_str_split(smpi_coef_string, ";");
92 xbt_dynar_foreach(radical_elements, iter, value) {
94 radical_elements2 = xbt_str_split(value, ":");
95 if (xbt_dynar_length(radical_elements2) != 2)
96 xbt_die("Malformed radical for smpi factor!");
97 fact.factor = atol(xbt_dynar_get_as(radical_elements2, 0, char *));
98 fact.value = atof(xbt_dynar_get_as(radical_elements2, 1, char *));
99 xbt_dynar_push_as(smpi_factor, s_smpi_factor_t, fact);
100 XBT_DEBUG("smpi_factor:\t%ld : %f", fact.factor, fact.value);
101 xbt_dynar_free(&radical_elements2);
103 xbt_dynar_free(&radical_elements);
107 static double smpi_bandwidth_factor(double size)
111 parse_factor(xbt_cfg_get_string(_surf_cfg_set, "smpi/bw_factor"));
113 unsigned int iter = 0;
114 s_smpi_factor_t fact;
115 xbt_dynar_foreach(smpi_bw_factor, iter, fact) {
116 if (size >= fact.factor) {
117 XBT_DEBUG("%lf >= %ld return %f", size, fact.factor, fact.value);
125 static double smpi_latency_factor(double size)
127 if (!smpi_lat_factor)
129 parse_factor(xbt_cfg_get_string(_surf_cfg_set, "smpi/lat_factor"));
131 unsigned int iter = 0;
132 s_smpi_factor_t fact;
133 xbt_dynar_foreach(smpi_lat_factor, iter, fact) {
134 if (size >= fact.factor) {
135 XBT_DEBUG("%lf >= %ld return %f", size, fact.factor, fact.value);
143 /**--------- <copy/paste C code snippet in surf/network.c> -----------*/
145 static double smpi_bandwidth_constraint(double rate, double bound,
148 return rate < 0 ? bound : min(bound, rate * smpi_bandwidth_factor(size));
151 static double (*latency_factor_callback) (double) =
152 &constant_latency_factor;
153 static double (*bandwidth_factor_callback) (double) =
154 &constant_bandwidth_factor;
155 static double (*bandwidth_constraint_callback) (double, double, double) =
156 &constant_bandwidth_constraint;
158 static void (*gap_append) (double, const link_CM02_t,
159 surf_action_network_CM02_t) = NULL;
160 static void (*gap_remove) (surf_action_network_CM02_t) = NULL;
162 static void *net_create_resource(const char *name,
164 tmgr_trace_t bw_trace,
166 tmgr_trace_t lat_trace,
167 e_surf_resource_state_t
169 tmgr_trace_t state_trace,
170 e_surf_link_sharing_policy_t
171 policy, xbt_dict_t properties)
173 link_CM02_t nw_link = (link_CM02_t)
174 surf_resource_lmm_new(sizeof(s_link_CM02_t),
175 surf_network_model, name, properties,
176 surf_network_model->maxmin_system,
177 sg_bandwidth_factor * bw_initial,
179 state_initial, state_trace,
180 bw_initial, bw_trace);
182 xbt_assert(!xbt_lib_get_or_null(link_lib, name, SURF_LINK_LEVEL),
183 "Link '%s' declared several times in the platform file.",
186 nw_link->lat_current = lat_initial;
189 tmgr_history_add_trace(history, lat_trace, 0.0, 0, nw_link);
191 if (policy == SURF_LINK_FATPIPE)
192 lmm_constraint_shared(nw_link->lmm_resource.constraint);
194 xbt_lib_set(link_lib, name, SURF_LINK_LEVEL, nw_link);
195 XBT_DEBUG("Create link '%s'",name);
200 static void net_parse_link_init(sg_platf_link_cbarg_t link)
202 if (link->policy == SURF_LINK_FULLDUPLEX) {
204 link_id = bprintf("%s_UP", link->id);
205 net_create_resource(link_id,
207 link->bandwidth_trace,
211 link->state_trace, link->policy, link->properties);
213 link_id = bprintf("%s_DOWN", link->id);
214 net_create_resource(link_id,
216 link->bandwidth_trace,
220 link->state_trace, link->policy, link->properties);
223 net_create_resource(link->id,
225 link->bandwidth_trace,
229 link->state_trace, link->policy, link->properties);
233 static void net_add_traces(void)
235 xbt_dict_cursor_t cursor = NULL;
236 char *trace_name, *elm;
238 static int called = 0;
243 /* connect all traces relative to network */
244 xbt_dict_foreach(trace_connect_list_link_avail, cursor, trace_name, elm) {
245 tmgr_trace_t trace = xbt_dict_get_or_null(traces_set_list, trace_name);
246 link_CM02_t link = xbt_lib_get_or_null(link_lib, elm, SURF_LINK_LEVEL);
248 xbt_assert(link, "Cannot connect trace %s to link %s: link undefined",
251 "Cannot connect trace %s to link %s: trace undefined",
254 link->lmm_resource.state_event =
255 tmgr_history_add_trace(history, trace, 0.0, 0, link);
258 xbt_dict_foreach(trace_connect_list_bandwidth, cursor, trace_name, elm) {
259 tmgr_trace_t trace = xbt_dict_get_or_null(traces_set_list, trace_name);
260 link_CM02_t link = xbt_lib_get_or_null(link_lib, elm, SURF_LINK_LEVEL);
262 xbt_assert(link, "Cannot connect trace %s to link %s: link undefined",
265 "Cannot connect trace %s to link %s: trace undefined",
268 link->lmm_resource.power.event =
269 tmgr_history_add_trace(history, trace, 0.0, 0, link);
272 xbt_dict_foreach(trace_connect_list_latency, cursor, trace_name, elm) {
273 tmgr_trace_t trace = xbt_dict_get_or_null(traces_set_list, trace_name);
274 link_CM02_t link = xbt_lib_get_or_null(link_lib, elm, SURF_LINK_LEVEL);
276 xbt_assert(link, "Cannot connect trace %s to link %s: link undefined",
279 "Cannot connect trace %s to link %s: trace undefined",
282 link->lat_event = tmgr_history_add_trace(history, trace, 0.0, 0, link);
286 static void net_define_callbacks(void)
288 /* Figuring out the network links */
289 sg_platf_link_add_cb(net_parse_link_init);
290 sg_platf_postparse_add_cb(net_add_traces);
293 static int net_resource_used(void *resource_id)
295 return lmm_constraint_used(surf_network_model->maxmin_system, ((surf_resource_lmm_t)
300 static int net_action_unref(surf_action_t action)
303 if (!action->refcount) {
304 xbt_swag_remove(action, action->state_set);
305 if (((surf_action_lmm_t)action)->variable) {
306 lmm_variable_free(surf_network_model->maxmin_system,
307 ((surf_action_lmm_t) action)->variable);
309 if (surf_network_model->update_mechanism == UM_LAZY) { // remove action from the heap
310 surf_action_lmm_heap_remove(surf_network_model->action_heap,(surf_action_lmm_t) action);
311 xbt_swag_remove(action, surf_network_model->modified_set);
314 if (action->category) xbt_free (action->category);
316 surf_action_free(&action);
324 static void net_action_cancel(surf_action_t action)
326 XBT_DEBUG("cancel action %p", action);
327 surf_network_model->action_state_set(action, SURF_ACTION_FAILED);
328 if (surf_network_model->update_mechanism == UM_LAZY) { // remove action from the heap
329 xbt_swag_remove(action, surf_network_model->modified_set);
330 surf_action_lmm_heap_remove(surf_network_model->action_heap,(surf_action_lmm_t) action);
334 void net_action_recycle(surf_action_t action)
339 #ifdef HAVE_LATENCY_BOUND_TRACKING
340 int net_get_link_latency_limited(surf_action_t action)
342 return action->latency_limited;
346 double net_action_get_remains(surf_action_t action)
348 XBT_IN("(%p)", action);
349 /* update remains before return it */
350 if (surf_network_model->update_mechanism == UM_LAZY) /* update remains before return it */
351 net_update_action_remaining_lazy((surf_action_network_CM02_t)action,
354 return action->remains;
357 static void net_update_action_remaining_lazy(surf_action_network_CM02_t action, double now)
361 if (GENERIC_LMM_ACTION(action).suspended != 0)
364 delta = now - GENERIC_LMM_ACTION(action).last_update;
366 double_update(&(((surf_action_t)action)->remains),
367 GENERIC_LMM_ACTION(action).last_value * delta);
369 if (((surf_action_t)action)->max_duration != NO_MAX_DURATION)
370 double_update(&(((surf_action_t)action)->max_duration), delta);
372 if ((((surf_action_t)action)->remains <= 0) &&
373 (lmm_get_variable_weight(GENERIC_LMM_ACTION(action).variable) > 0)) {
374 ((surf_action_t)action)->finish = surf_get_clock();
375 surf_network_model->action_state_set((surf_action_t) action,
378 surf_action_lmm_heap_remove(surf_network_model->action_heap,(surf_action_lmm_t)action);
379 } else if (((((surf_action_t)action)->max_duration != NO_MAX_DURATION)
380 && (((surf_action_t)action)->max_duration <= 0))) {
381 ((surf_action_t)action)->finish = surf_get_clock();
382 surf_network_model->action_state_set((surf_action_t) action,
384 surf_action_lmm_heap_remove(surf_network_model->action_heap,(surf_action_lmm_t)action);
387 GENERIC_LMM_ACTION(action).last_update = now;
388 GENERIC_LMM_ACTION(action).last_value = lmm_variable_getvalue(GENERIC_LMM_ACTION(action).variable);
391 static double net_share_resources_full(double now)
393 s_surf_action_lmm_t s_action;
394 surf_action_network_CM02_t action = NULL;
395 xbt_swag_t running_actions =
396 surf_network_model->states.running_action_set;
399 min = generic_maxmin_share_resources(running_actions,
400 xbt_swag_offset(s_action,
402 surf_network_model->maxmin_system,
405 #define VARIABLE(action) (*((lmm_variable_t*)(((char *) (action)) + xbt_swag_offset(s_action, variable) )))
407 xbt_swag_foreach(action, running_actions) {
408 #ifdef HAVE_LATENCY_BOUND_TRACKING
409 if (lmm_is_variable_limited_by_latency(GENERIC_LMM_ACTION(action).variable)) {
410 action->latency_limited = 1;
412 action->latency_limited = 0;
415 if (action->latency > 0) {
416 min = (min < 0) ? action->latency : min(min, action->latency);
420 XBT_DEBUG("Min of share resources %f", min);
425 static double net_share_resources_lazy(double now)
427 surf_action_network_CM02_t action = NULL;
432 ("Before share resources, the size of modified actions set is %d",
433 xbt_swag_size(surf_network_model->modified_set));
435 lmm_solve(surf_network_model->maxmin_system);
438 ("After share resources, The size of modified actions set is %d",
439 xbt_swag_size(surf_network_model->modified_set));
441 while((action = xbt_swag_extract(surf_network_model->modified_set))) {
442 int max_dur_flag = 0;
444 if (GENERIC_ACTION(action).state_set !=
445 surf_network_model->states.running_action_set)
448 /* bogus priority, skip it */
449 if (GENERIC_ACTION(action).priority <= 0)
452 net_update_action_remaining_lazy(action,now);
455 value = lmm_variable_getvalue(GENERIC_LMM_ACTION(action).variable);
457 if (GENERIC_ACTION(action).remains > 0) {
458 value = GENERIC_ACTION(action).remains / value;
466 if ((GENERIC_ACTION(action).max_duration != NO_MAX_DURATION)
468 || GENERIC_ACTION(action).start +
469 GENERIC_ACTION(action).max_duration < min)) {
470 min = GENERIC_ACTION(action).start +
471 GENERIC_ACTION(action).max_duration;
475 XBT_DEBUG("Action(%p) Start %lf Finish %lf Max_duration %lf", action,
476 GENERIC_ACTION(action).start, now + value,
477 GENERIC_ACTION(action).max_duration);
480 surf_action_lmm_heap_remove(surf_network_model->action_heap,(surf_action_lmm_t)action);
481 surf_action_lmm_heap_insert(surf_network_model->action_heap,(surf_action_lmm_t)action, min, max_dur_flag ? MAX_DURATION : NORMAL);
482 XBT_DEBUG("Insert at heap action(%p) min %lf now %lf", action, min,
484 } else DIE_IMPOSSIBLE;
487 //hereafter must have already the min value for this resource model
488 if (xbt_heap_size(surf_network_model->action_heap) > 0)
489 min = xbt_heap_maxkey(surf_network_model->action_heap) - now;
493 XBT_DEBUG("The minimum with the HEAP %lf", min);
498 static void net_update_actions_state_full(double now, double delta)
501 surf_action_network_CM02_t action = NULL;
502 surf_action_network_CM02_t next_action = NULL;
503 xbt_swag_t running_actions =
504 surf_network_model->states.running_action_set;
506 xbt_swag_t failed_actions =
507 surf_network_model->states.failed_action_set;
510 xbt_swag_foreach_safe(action, next_action, running_actions) {
512 if (action->latency > 0) {
513 if (action->latency > deltap) {
514 double_update(&(action->latency), deltap);
517 double_update(&(deltap), action->latency);
518 action->latency = 0.0;
520 if ((action->latency == 0.0) && !(GENERIC_LMM_ACTION(action).suspended))
521 lmm_update_variable_weight(surf_network_model->maxmin_system, GENERIC_LMM_ACTION(action).variable,
525 if (TRACE_is_enabled()) {
526 int n = lmm_get_number_of_cnst_from_var(network_maxmin_system, GENERIC_LMM_ACTION(action).variable);
528 for (i = 0; i < n; i++){
529 lmm_constraint_t constraint = lmm_get_cnst_from_var(network_maxmin_system,
530 GENERIC_LMM_ACTION(action).variable,
532 link_CM02_t link = lmm_constraint_id(constraint);
533 TRACE_surf_link_set_utilization(link->lmm_resource.generic_resource.name,
534 ((surf_action_t)action)->category,
535 (lmm_variable_getvalue(GENERIC_LMM_ACTION(action).variable)*
536 lmm_get_cnst_weight_from_var(network_maxmin_system,
537 GENERIC_LMM_ACTION(action).variable,
544 if (!lmm_get_number_of_cnst_from_var
545 (surf_network_model->maxmin_system, GENERIC_LMM_ACTION(action).variable)) {
546 /* There is actually no link used, hence an infinite bandwidth.
547 * This happens often when using models like vivaldi.
548 * In such case, just make sure that the action completes immediately.
550 double_update(&(GENERIC_ACTION(action).remains),
551 GENERIC_ACTION(action).remains);
553 double_update(&(GENERIC_ACTION(action).remains),
554 lmm_variable_getvalue(GENERIC_LMM_ACTION(action).variable) * deltap);
555 if (((surf_action_t)action)->max_duration != NO_MAX_DURATION)
556 double_update(&(((surf_action_t)action)->max_duration), delta);
558 if ((GENERIC_ACTION(action).remains <= 0) &&
559 (lmm_get_variable_weight(GENERIC_LMM_ACTION(action).variable) > 0)) {
560 ((surf_action_t)action)->finish = surf_get_clock();
561 surf_network_model->action_state_set((surf_action_t) action,
566 } else if ((((surf_action_t)action)->max_duration != NO_MAX_DURATION)
567 && (((surf_action_t)action)->max_duration <= 0)) {
568 ((surf_action_t)action)->finish = surf_get_clock();
569 surf_network_model->action_state_set((surf_action_t) action,
579 static void net_update_actions_state_lazy(double now, double delta)
581 surf_action_network_CM02_t action = NULL;
583 while ((xbt_heap_size(surf_network_model->action_heap) > 0)
584 && (double_equals(xbt_heap_maxkey(surf_network_model->action_heap), now))) {
585 action = xbt_heap_pop(surf_network_model->action_heap);
586 XBT_DEBUG("Action %p: finish", action);
587 GENERIC_ACTION(action).finish = surf_get_clock();
589 if (TRACE_is_enabled()) {
590 int n = lmm_get_number_of_cnst_from_var(network_maxmin_system, GENERIC_LMM_ACTION(action).variable);
592 for (i = 0; i < n; i++){
593 lmm_constraint_t constraint = lmm_get_cnst_from_var(network_maxmin_system,
594 GENERIC_LMM_ACTION(action).variable,
596 link_CM02_t link = lmm_constraint_id(constraint);
597 TRACE_surf_link_set_utilization(link->lmm_resource.generic_resource.name,
598 ((surf_action_t)action)->category,
599 (lmm_variable_getvalue(GENERIC_LMM_ACTION(action).variable)*
600 lmm_get_cnst_weight_from_var(network_maxmin_system,
601 GENERIC_LMM_ACTION(action).variable,
603 GENERIC_LMM_ACTION(action).last_update,
604 now - GENERIC_LMM_ACTION(action).last_update);
609 // if I am wearing a latency hat
610 if (GENERIC_LMM_ACTION(action).hat == LATENCY) {
611 lmm_update_variable_weight(surf_network_model->maxmin_system, GENERIC_LMM_ACTION(action).variable,
613 surf_action_lmm_heap_remove(surf_network_model->action_heap,(surf_action_lmm_t)action);
614 GENERIC_LMM_ACTION(action).last_update = surf_get_clock();
616 // if I am wearing a max_duration or normal hat
617 } else if (GENERIC_LMM_ACTION(action).hat == MAX_DURATION ||
618 GENERIC_LMM_ACTION(action).hat == NORMAL) {
619 // no need to communicate anymore
620 // assume that flows that reached max_duration have remaining of 0
621 GENERIC_ACTION(action).remains = 0;
622 ((surf_action_t)action)->finish = surf_get_clock();
623 surf_network_model->action_state_set((surf_action_t) action,
625 surf_action_lmm_heap_remove(surf_network_model->action_heap,(surf_action_lmm_t)action);
631 static void net_update_resource_state(void *id,
632 tmgr_trace_event_t event_type,
633 double value, double date)
635 link_CM02_t nw_link = id;
636 /* printf("[" "%lg" "] Asking to update network card \"%s\" with value " */
637 /* "%lg" " for event %p\n", surf_get_clock(), nw_link->name, */
638 /* value, event_type); */
640 if (event_type == nw_link->lmm_resource.power.event) {
642 sg_weight_S_parameter / value - sg_weight_S_parameter /
643 (nw_link->lmm_resource.power.peak *
644 nw_link->lmm_resource.power.scale);
645 lmm_variable_t var = NULL;
646 lmm_element_t elem = NULL;
647 surf_action_network_CM02_t action = NULL;
649 nw_link->lmm_resource.power.peak = value;
650 lmm_update_constraint_bound(surf_network_model->maxmin_system,
651 nw_link->lmm_resource.constraint,
652 sg_bandwidth_factor *
653 (nw_link->lmm_resource.power.peak *
654 nw_link->lmm_resource.power.scale));
656 TRACE_surf_link_set_bandwidth(date,
658 *) (((nw_link->lmm_resource).
659 generic_resource).name),
660 sg_bandwidth_factor *
661 (nw_link->lmm_resource.power.peak *
662 nw_link->lmm_resource.power.scale));
664 if (sg_weight_S_parameter > 0) {
665 while ((var = lmm_get_var_from_cnst
666 (surf_network_model->maxmin_system, nw_link->lmm_resource.constraint,
668 action = lmm_variable_id(var);
669 action->weight += delta;
670 if (!(GENERIC_LMM_ACTION(action).suspended))
671 lmm_update_variable_weight(surf_network_model->maxmin_system,
672 GENERIC_LMM_ACTION(action).variable, action->weight);
675 if (tmgr_trace_event_free(event_type))
676 nw_link->lmm_resource.power.event = NULL;
677 } else if (event_type == nw_link->lat_event) {
678 double delta = value - nw_link->lat_current;
679 lmm_variable_t var = NULL;
680 lmm_element_t elem = NULL;
681 surf_action_network_CM02_t action = NULL;
683 nw_link->lat_current = value;
684 while ((var = lmm_get_var_from_cnst
685 (surf_network_model->maxmin_system, nw_link->lmm_resource.constraint,
687 action = lmm_variable_id(var);
688 action->lat_current += delta;
689 action->weight += delta;
690 if (action->rate < 0)
691 lmm_update_variable_bound(surf_network_model->maxmin_system, GENERIC_LMM_ACTION(action).variable,
692 sg_tcp_gamma / (2.0 *
693 action->lat_current));
695 lmm_update_variable_bound(surf_network_model->maxmin_system, GENERIC_LMM_ACTION(action).variable,
697 sg_tcp_gamma / (2.0 *
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 (!(GENERIC_LMM_ACTION(action).suspended))
709 lmm_update_variable_weight(surf_network_model->maxmin_system, GENERIC_LMM_ACTION(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 (surf_network_model->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");
743 ("There were a resource state event, need to update actions related to the constraint (%p)",
744 nw_link->lmm_resource.constraint);
749 static surf_action_t net_communicate(sg_routing_edge_t src,
750 sg_routing_edge_t dst,
751 double size, double rate)
756 surf_action_network_CM02_t action = NULL;
757 double bandwidth_bound;
758 double latency = 0.0;
759 xbt_dynar_t back_route = NULL;
760 int constraints_per_variable = 0;
762 xbt_dynar_t route = xbt_dynar_new(sizeof(sg_routing_link_t), NULL);
764 XBT_IN("(%s,%s,%g,%g)", src->name, dst->name, size, rate);
766 routing_get_route_and_latency(src, dst, &route, &latency);
767 xbt_assert(!xbt_dynar_is_empty(route) || latency,
768 "You're trying to send data from %s to %s but there is no connection at all between these two hosts.",
769 src->name, dst->name);
771 xbt_dynar_foreach(route, i, link) {
772 if (link->lmm_resource.state_current == SURF_RESOURCE_OFF) {
777 if (sg_network_crosstraffic == 1) {
778 routing_get_route_and_latency(dst, src, &back_route, NULL);
779 xbt_dynar_foreach(back_route, i, link) {
780 if (link->lmm_resource.state_current == SURF_RESOURCE_OFF) {
788 surf_action_new(sizeof(s_surf_action_network_CM02_t), size,
789 surf_network_model, failed);
790 #ifdef HAVE_LATENCY_BOUND_TRACKING
791 action->latency_limited = 0;
793 action->weight = action->latency = latency;
795 xbt_swag_insert(action, ((surf_action_t)action)->state_set);
797 if (surf_network_model->update_mechanism == UM_LAZY) {
798 GENERIC_LMM_ACTION(action).index_heap = -1;
799 GENERIC_LMM_ACTION(action).last_update = surf_get_clock();
802 bandwidth_bound = -1.0;
803 if (sg_weight_S_parameter > 0) {
804 xbt_dynar_foreach(route, i, link) {
806 sg_weight_S_parameter /
807 (link->lmm_resource.power.peak * link->lmm_resource.power.scale);
810 xbt_dynar_foreach(route, i, link) {
811 double bb = bandwidth_factor_callback(size) *
812 (link->lmm_resource.power.peak * link->lmm_resource.power.scale);
814 (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, size);
822 xbt_assert(!xbt_dynar_is_empty(route),
823 "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,
832 constraints_per_variable = xbt_dynar_length(route);
833 if (back_route != NULL)
834 constraints_per_variable += xbt_dynar_length(back_route);
836 if (action->latency > 0) {
837 GENERIC_LMM_ACTION(action).variable =
838 lmm_variable_new(surf_network_model->maxmin_system, action, 0.0, -1.0,
839 constraints_per_variable);
840 if (surf_network_model->update_mechanism == UM_LAZY) {
841 // add to the heap the event when the latency is payed
842 XBT_DEBUG("Added action (%p) one latency event at date %f", action,
843 action->latency + GENERIC_LMM_ACTION(action).last_update);
844 surf_action_lmm_heap_insert(surf_network_model->action_heap,(surf_action_lmm_t)action, action->latency + GENERIC_LMM_ACTION(action).last_update,
845 xbt_dynar_is_empty(route) ? NORMAL : LATENCY);
848 GENERIC_LMM_ACTION(action).variable =
849 lmm_variable_new(surf_network_model->maxmin_system, action, 1.0, -1.0,
850 constraints_per_variable);
852 if (action->rate < 0) {
853 lmm_update_variable_bound(surf_network_model->maxmin_system, GENERIC_LMM_ACTION(action).variable,
854 (action->lat_current > 0) ?
855 sg_tcp_gamma / (2.0 *
856 action->lat_current) : -1.0);
858 lmm_update_variable_bound(surf_network_model->maxmin_system, GENERIC_LMM_ACTION(action).variable,
859 (action->lat_current > 0) ?
861 sg_tcp_gamma / (2.0 *
862 action->lat_current))
866 xbt_dynar_foreach(route, i, link) {
867 lmm_expand(surf_network_model->maxmin_system, link->lmm_resource.constraint,
868 GENERIC_LMM_ACTION(action).variable, 1.0);
871 if (sg_network_crosstraffic == 1) {
872 XBT_DEBUG("Fullduplex active adding backward flow using 5%%");
873 xbt_dynar_foreach(back_route, i, link) {
874 lmm_expand(surf_network_model->maxmin_system, link->lmm_resource.constraint,
875 GENERIC_LMM_ACTION(action).variable, .05);
879 xbt_dynar_free(&route);
882 return (surf_action_t) action;
885 static xbt_dynar_t net_get_route(void *src, void *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)->generic_lmm_action.suspended = 1;
912 lmm_update_variable_weight(surf_network_model->maxmin_system,
913 ((surf_action_network_CM02_t)
914 action)->generic_lmm_action.variable, 0.0);
916 if (surf_network_model->update_mechanism == UM_LAZY) // remove action from the heap
917 surf_action_lmm_heap_remove(surf_network_model->action_heap,(surf_action_lmm_t)action);
920 static void net_action_resume(surf_action_t action)
922 if (((surf_action_network_CM02_t) action)->generic_lmm_action.suspended) {
923 lmm_update_variable_weight(surf_network_model->maxmin_system,
924 ((surf_action_network_CM02_t)
925 action)->generic_lmm_action.variable,
926 ((surf_action_network_CM02_t)
928 ((surf_action_network_CM02_t) action)->generic_lmm_action.suspended = 0;
929 if (surf_network_model->update_mechanism == UM_LAZY) // remove action from the heap
930 surf_action_lmm_heap_remove(surf_network_model->action_heap,(surf_action_lmm_t)action);
934 static int net_action_is_suspended(surf_action_t action)
936 return ((surf_action_network_CM02_t) action)->generic_lmm_action.suspended;
939 void net_action_set_max_duration(surf_action_t action, double duration)
941 action->max_duration = duration;
942 if (surf_network_model->update_mechanism == UM_LAZY) // remove action from the heap
943 surf_action_lmm_heap_remove(surf_network_model->action_heap,(surf_action_lmm_t)action);
947 static void net_action_set_category(surf_action_t action,
948 const char *category)
950 action->category = xbt_strdup(category);
954 static void net_finalize(void)
956 lmm_system_free(surf_network_model->maxmin_system);
957 surf_network_model->maxmin_system = NULL;
959 if (surf_network_model->update_mechanism == UM_LAZY) {
960 xbt_heap_free(surf_network_model->action_heap);
961 xbt_swag_free(surf_network_model->modified_set);
964 surf_model_exit(surf_network_model);
965 surf_network_model = NULL;
968 xbt_dynar_free(&smpi_bw_factor);
970 xbt_dynar_free(&smpi_lat_factor);
973 static void smpi_gap_append(double size, const link_CM02_t link,
974 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 */
990 (surf_action_network_CM02_t)
991 xbt_fifo_get_item_content(xbt_fifo_get_last_item(fifo));
992 bw = net_get_link_bandwidth(link);
994 last_action->sender.gap + max(sg_sender_gap,
995 last_action->sender.size / bw);
996 action->latency += action->sender.gap;
998 /* Append action as last send */
999 action->sender.link_name = link->lmm_resource.generic_resource.name;
1001 (xbt_fifo_t) xbt_dict_get_or_null(gap_lookup,
1002 action->sender.link_name);
1004 fifo = xbt_fifo_new();
1005 xbt_dict_set(gap_lookup, action->sender.link_name, fifo, NULL);
1007 action->sender.fifo_item = xbt_fifo_push(fifo, action);
1008 action->sender.size = size;
1012 static void smpi_gap_remove(surf_action_network_CM02_t action)
1017 if (sg_sender_gap > 0.0 && action->sender.link_name
1018 && action->sender.fifo_item) {
1020 (xbt_fifo_t) xbt_dict_get_or_null(gap_lookup,
1021 action->sender.link_name);
1022 xbt_fifo_remove_item(fifo, action->sender.fifo_item);
1023 size = xbt_fifo_size(fifo);
1025 xbt_fifo_free(fifo);
1026 xbt_dict_remove(gap_lookup, action->sender.link_name);
1027 size = xbt_dict_length(gap_lookup);
1029 xbt_dict_free(&gap_lookup);
1035 static void set_update_mechanism(void)
1037 char *optim = xbt_cfg_get_string(_surf_cfg_set, "network/optim");
1039 xbt_cfg_get_int(_surf_cfg_set, "network/maxmin_selective_update");
1041 if (!strcmp(optim, "Full")) {
1042 surf_network_model->update_mechanism = UM_FULL;
1043 surf_network_model->selective_update = select;
1044 } else if (!strcmp(optim, "Lazy")) {
1045 surf_network_model->update_mechanism = UM_LAZY;
1046 surf_network_model->selective_update = 1;
1047 xbt_assert((select == 1)
1049 (xbt_cfg_is_default_value
1050 (_surf_cfg_set, "network/maxmin_selective_update")),
1051 "Disabling selective update while using the lazy update mechanism is dumb!");
1053 xbt_die("Unsupported optimization (%s) for this model", optim);
1057 static void surf_network_model_init_internal(void)
1059 s_surf_action_network_CM02_t comm;
1060 surf_network_model = surf_model_init();
1062 set_update_mechanism();
1064 surf_network_model->name = "network";
1065 surf_network_model->action_unref = net_action_unref;
1066 surf_network_model->action_cancel = net_action_cancel;
1067 surf_network_model->action_recycle = net_action_recycle;
1068 surf_network_model->get_remains = net_action_get_remains;
1069 #ifdef HAVE_LATENCY_BOUND_TRACKING
1070 surf_network_model->get_latency_limited = net_get_link_latency_limited;
1073 surf_network_model->set_category = net_action_set_category;
1076 surf_network_model->model_private->resource_used = net_resource_used;
1077 if (surf_network_model->update_mechanism == UM_LAZY) {
1078 surf_network_model->model_private->share_resources =
1079 net_share_resources_lazy;
1080 surf_network_model->model_private->update_actions_state =
1081 net_update_actions_state_lazy;
1082 } else if (surf_network_model->update_mechanism == UM_FULL) {
1083 surf_network_model->model_private->share_resources =
1084 net_share_resources_full;
1085 surf_network_model->model_private->update_actions_state =
1086 net_update_actions_state_full;
1089 surf_network_model->model_private->update_resource_state =
1090 net_update_resource_state;
1091 surf_network_model->model_private->finalize = net_finalize;
1093 surf_network_model->suspend = net_action_suspend;
1094 surf_network_model->resume = net_action_resume;
1095 surf_network_model->is_suspended = net_action_is_suspended;
1096 surf_cpu_model->set_max_duration = net_action_set_max_duration;
1098 surf_network_model->extension.network.communicate = net_communicate;
1099 surf_network_model->extension.network.get_route = net_get_route;
1100 surf_network_model->extension.network.get_link_bandwidth =
1101 net_get_link_bandwidth;
1102 surf_network_model->extension.network.get_link_latency =
1103 net_get_link_latency;
1104 surf_network_model->extension.network.link_shared = net_link_shared;
1105 surf_network_model->extension.network.add_traces = net_add_traces;
1106 surf_network_model->extension.network.create_resource =
1107 net_create_resource;
1109 if (!surf_network_model->maxmin_system)
1110 surf_network_model->maxmin_system = lmm_system_new(surf_network_model->selective_update);
1112 routing_model_create(net_create_resource("__loopback__",
1113 498000000, NULL, 0.000015, NULL,
1114 SURF_RESOURCE_ON, NULL,
1115 SURF_LINK_FATPIPE, NULL));
1117 if (surf_network_model->update_mechanism == UM_LAZY) {
1118 surf_network_model->action_heap = xbt_heap_new(8, NULL);
1119 xbt_heap_set_update_callback(surf_network_model->action_heap,
1120 surf_action_lmm_update_index_heap);
1121 surf_network_model->modified_set =
1122 xbt_swag_new(xbt_swag_offset(comm, generic_lmm_action.action_list_hookup));
1123 surf_network_model->maxmin_system->keep_track = surf_network_model->modified_set;
1127 /************************************************************************/
1128 /* New model based on LV08 and experimental results of MPI ping-pongs */
1129 /************************************************************************/
1130 /* @Inproceedings{smpi_ipdps, */
1131 /* author={Pierre-Nicolas Clauss and Mark Stillwell and Stéphane Genaud and Frédéric Suter and Henri Casanova and Martin Quinson}, */
1132 /* title={Single Node On-Line Simulation of {MPI} Applications with SMPI}, */
1133 /* booktitle={25th IEEE International Parallel and Distributed Processing Symposium (IPDPS'11)}, */
1134 /* address={Anchorage (Alaska) USA}, */
1138 void surf_network_model_init_SMPI(void)
1141 if (surf_network_model)
1144 surf_network_model_init_internal();
1145 latency_factor_callback = &smpi_latency_factor;
1146 bandwidth_factor_callback = &smpi_bandwidth_factor;
1147 bandwidth_constraint_callback = &smpi_bandwidth_constraint;
1148 gap_append = &smpi_gap_append;
1149 gap_remove = &smpi_gap_remove;
1150 net_define_callbacks();
1151 xbt_dynar_push(model_list, &surf_network_model);
1152 network_solve = lmm_solve;
1154 xbt_cfg_setdefault_double(_surf_cfg_set, "network/sender_gap", 10e-6);
1155 xbt_cfg_setdefault_double(_surf_cfg_set, "network/weight_S", 8775);
1158 /************************************************************************/
1159 /* New model based on optimizations discussed during Pedro Velho's thesis*/
1160 /************************************************************************/
1161 /* @techreport{VELHO:2011:HAL-00646896:1, */
1162 /* url = {http://hal.inria.fr/hal-00646896/en/}, */
1163 /* title = {{Flow-level network models: have we reached the limits?}}, */
1164 /* author = {Velho, Pedro and Schnorr, Lucas and Casanova, Henri and Legrand, Arnaud}, */
1165 /* type = {Rapport de recherche}, */
1166 /* institution = {INRIA}, */
1167 /* number = {RR-7821}, */
1168 /* year = {2011}, */
1170 /* pdf = {http://hal.inria.fr/hal-00646896/PDF/rr-validity.pdf}, */
1172 void surf_network_model_init_LegrandVelho(void)
1174 if (surf_network_model)
1177 surf_network_model_init_internal();
1178 net_define_callbacks();
1179 xbt_dynar_push(model_list, &surf_network_model);
1180 network_solve = lmm_solve;
1182 xbt_cfg_setdefault_double(_surf_cfg_set, "network/latency_factor",
1184 xbt_cfg_setdefault_double(_surf_cfg_set, "network/bandwidth_factor",
1186 xbt_cfg_setdefault_double(_surf_cfg_set, "network/weight_S", 20537);
1189 /***************************************************************************/
1190 /* The nice TCP sharing model designed by Loris Marchal and Henri Casanova */
1191 /***************************************************************************/
1192 /* @TechReport{ rr-lip2002-40, */
1193 /* author = {Henri Casanova and Loris Marchal}, */
1194 /* institution = {LIP}, */
1195 /* title = {A Network Model for Simulation of Grid Application}, */
1196 /* number = {2002-40}, */
1197 /* month = {oct}, */
1200 void surf_network_model_init_CM02(void)
1203 if (surf_network_model)
1206 surf_network_model_init_internal();
1207 net_define_callbacks();
1208 xbt_dynar_push(model_list, &surf_network_model);
1209 network_solve = lmm_solve;
1211 xbt_cfg_setdefault_double(_surf_cfg_set, "network/latency_factor", 1.0);
1212 xbt_cfg_setdefault_double(_surf_cfg_set, "network/bandwidth_factor",
1214 xbt_cfg_setdefault_double(_surf_cfg_set, "network/weight_S", 0.0);
1217 /***************************************************************************/
1218 /* The models from Steven H. Low */
1219 /***************************************************************************/
1220 /* @article{Low03, */
1221 /* author={Steven H. Low}, */
1222 /* title={A Duality Model of {TCP} and Queue Management Algorithms}, */
1224 /* journal={{IEEE/ACM} Transactions on Networking}, */
1225 /* volume={11}, number={4}, */
1227 void surf_network_model_init_Reno(void)
1229 if (surf_network_model)
1232 surf_network_model_init_internal();
1233 net_define_callbacks();
1235 xbt_dynar_push(model_list, &surf_network_model);
1236 lmm_set_default_protocol_function(func_reno_f, func_reno_fp,
1238 network_solve = lagrange_solve;
1240 xbt_cfg_setdefault_double(_surf_cfg_set, "network/latency_factor", 10.4);
1241 xbt_cfg_setdefault_double(_surf_cfg_set, "network/bandwidth_factor",
1243 xbt_cfg_setdefault_double(_surf_cfg_set, "network/weight_S", 8775);
1247 void surf_network_model_init_Reno2(void)
1249 if (surf_network_model)
1252 surf_network_model_init_internal();
1253 net_define_callbacks();
1255 xbt_dynar_push(model_list, &surf_network_model);
1256 lmm_set_default_protocol_function(func_reno2_f, func_reno2_fp,
1258 network_solve = lagrange_solve;
1260 xbt_cfg_setdefault_double(_surf_cfg_set, "network/latency_factor", 10.4);
1261 xbt_cfg_setdefault_double(_surf_cfg_set, "network/bandwidth_factor",
1263 xbt_cfg_setdefault_double(_surf_cfg_set, "network/weight_S_parameter",
1267 void surf_network_model_init_Vegas(void)
1269 if (surf_network_model)
1272 surf_network_model_init_internal();
1273 net_define_callbacks();
1275 xbt_dynar_push(model_list, &surf_network_model);
1276 lmm_set_default_protocol_function(func_vegas_f, func_vegas_fp,
1278 network_solve = lagrange_solve;
1280 xbt_cfg_setdefault_double(_surf_cfg_set, "network/latency_factor", 10.4);
1281 xbt_cfg_setdefault_double(_surf_cfg_set, "network/bandwidth_factor",
1283 xbt_cfg_setdefault_double(_surf_cfg_set, "network/weight_S", 8775);