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 {
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 e_UM_t network_update_mechanism = UM_UNDEFINED;
59 static int net_selective_update = 0;
61 static int net_action_is_suspended(surf_action_t action);
62 static void update_action_remaining_lazy(double now);
64 static xbt_swag_t net_modified_set = NULL;
65 static xbt_heap_t net_action_heap = NULL;
67 /* added to manage the communication action's heap */
68 static void net_action_update_index_heap(void *action, int i)
70 ((surf_action_network_CM02_t) action)->index_heap = i;
73 /* insert action on heap using a given key and a hat (heap_action_type)
74 * a hat can be of three types for communications:
76 * NORMAL = this is a normal heap entry stating the date to finish transmitting
77 * LATENCY = this is a heap entry to warn us when the latency is payed
78 * MAX_DURATION =this is a heap entry to warn us when the max_duration limit is reached
80 static void heap_insert(surf_action_network_CM02_t action, double key,
81 enum heap_action_type hat)
84 xbt_heap_push(net_action_heap, action, key);
87 static void heap_remove(surf_action_network_CM02_t action)
90 if (((surf_action_network_CM02_t) action)->index_heap >= 0) {
91 xbt_heap_remove(net_action_heap, action->index_heap);
95 /******************************************************************************/
96 /* Factors callbacks */
97 /******************************************************************************/
98 static double constant_latency_factor(double size)
100 return sg_latency_factor;
103 static double constant_bandwidth_factor(double size)
105 return sg_bandwidth_factor;
108 static double constant_bandwidth_constraint(double rate, double bound,
114 /**********************/
116 /**********************/
117 static xbt_dynar_t parse_factor(const char *smpi_coef_string)
120 unsigned int iter = 0;
121 s_smpi_factor_t fact;
122 xbt_dynar_t smpi_factor, radical_elements, radical_elements2 = NULL;
124 smpi_factor = xbt_dynar_new(sizeof(s_smpi_factor_t), NULL);
125 radical_elements = xbt_str_split(smpi_coef_string, ";");
126 xbt_dynar_foreach(radical_elements, iter, value) {
128 radical_elements2 = xbt_str_split(value, ":");
129 if (xbt_dynar_length(radical_elements2) != 2)
130 xbt_die("Malformed radical for smpi factor!");
131 fact.factor = atol(xbt_dynar_get_as(radical_elements2, 0, char *));
132 fact.value = atof(xbt_dynar_get_as(radical_elements2, 1, char *));
133 xbt_dynar_push_as(smpi_factor, s_smpi_factor_t, fact);
134 XBT_DEBUG("smpi_factor:\t%ld : %f", fact.factor, fact.value);
135 xbt_dynar_free(&radical_elements2);
137 xbt_dynar_free(&radical_elements);
141 static double smpi_bandwidth_factor(double size)
145 parse_factor(xbt_cfg_get_string(_surf_cfg_set, "smpi/bw_factor"));
147 unsigned int iter = 0;
148 s_smpi_factor_t fact;
149 xbt_dynar_foreach(smpi_bw_factor, iter, fact) {
150 if (size >= fact.factor) {
151 XBT_DEBUG("%lf >= %ld return %f", size, fact.factor, fact.value);
159 static double smpi_latency_factor(double size)
161 if (!smpi_lat_factor)
163 parse_factor(xbt_cfg_get_string(_surf_cfg_set, "smpi/lat_factor"));
165 unsigned int iter = 0;
166 s_smpi_factor_t fact;
167 xbt_dynar_foreach(smpi_lat_factor, iter, fact) {
168 if (size >= fact.factor) {
169 XBT_DEBUG("%lf >= %ld return %f", size, fact.factor, fact.value);
177 /**--------- <copy/paste C code snippet in surf/network.c> -----------*/
179 static double smpi_bandwidth_constraint(double rate, double bound,
182 return rate < 0 ? bound : min(bound, rate * smpi_bandwidth_factor(size));
185 static double (*latency_factor_callback) (double) =
186 &constant_latency_factor;
187 static double (*bandwidth_factor_callback) (double) =
188 &constant_bandwidth_factor;
189 static double (*bandwidth_constraint_callback) (double, double, double) =
190 &constant_bandwidth_constraint;
192 static void (*gap_append) (double, const link_CM02_t,
193 surf_action_network_CM02_t) = NULL;
194 static void (*gap_remove) (surf_action_network_CM02_t) = NULL;
196 static void *net_create_resource(const char *name,
198 tmgr_trace_t bw_trace,
200 tmgr_trace_t lat_trace,
201 e_surf_resource_state_t
203 tmgr_trace_t state_trace,
204 e_surf_link_sharing_policy_t
205 policy, xbt_dict_t properties)
207 link_CM02_t nw_link = (link_CM02_t)
208 surf_resource_lmm_new(sizeof(s_link_CM02_t),
209 surf_network_model, name, properties,
210 network_maxmin_system,
211 sg_bandwidth_factor * bw_initial,
213 state_initial, state_trace,
214 bw_initial, bw_trace);
216 xbt_assert(!xbt_lib_get_or_null(link_lib, name, SURF_LINK_LEVEL),
217 "Link '%s' declared several times in the platform file.",
220 nw_link->lat_current = lat_initial;
223 tmgr_history_add_trace(history, lat_trace, 0.0, 0, nw_link);
225 if (policy == SURF_LINK_FATPIPE)
226 lmm_constraint_shared(nw_link->lmm_resource.constraint);
228 xbt_lib_set(link_lib, name, SURF_LINK_LEVEL, nw_link);
233 static void net_parse_link_init(sg_platf_link_cbarg_t link)
235 if (link->policy == SURF_LINK_FULLDUPLEX) {
237 link_id = bprintf("%s_UP", link->id);
238 net_create_resource(link_id,
240 link->bandwidth_trace,
244 link->state_trace, link->policy, link->properties);
246 link_id = bprintf("%s_DOWN", link->id);
247 net_create_resource(link_id,
249 link->bandwidth_trace,
253 link->state_trace, link->policy, link->properties);
256 net_create_resource(link->id,
258 link->bandwidth_trace,
262 link->state_trace, link->policy, link->properties);
266 static void net_add_traces(void)
268 xbt_dict_cursor_t cursor = NULL;
269 char *trace_name, *elm;
271 static int called = 0;
276 /* connect all traces relative to network */
277 xbt_dict_foreach(trace_connect_list_link_avail, cursor, trace_name, elm) {
278 tmgr_trace_t trace = xbt_dict_get_or_null(traces_set_list, trace_name);
279 link_CM02_t link = xbt_lib_get_or_null(link_lib, elm, SURF_LINK_LEVEL);
281 xbt_assert(link, "Cannot connect trace %s to link %s: link undefined",
284 "Cannot connect trace %s to link %s: trace undefined",
287 link->lmm_resource.state_event =
288 tmgr_history_add_trace(history, trace, 0.0, 0, link);
291 xbt_dict_foreach(trace_connect_list_bandwidth, cursor, trace_name, elm) {
292 tmgr_trace_t trace = xbt_dict_get_or_null(traces_set_list, trace_name);
293 link_CM02_t link = 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);
307 link_CM02_t link = xbt_lib_get_or_null(link_lib, elm, SURF_LINK_LEVEL);
309 xbt_assert(link, "Cannot connect trace %s to link %s: link undefined",
312 "Cannot connect trace %s to link %s: trace undefined",
315 link->lat_event = tmgr_history_add_trace(history, trace, 0.0, 0, link);
319 static void net_define_callbacks(void)
321 /* Figuring out the network links */
322 sg_platf_link_add_cb(net_parse_link_init);
323 sg_platf_postparse_add_cb(net_add_traces);
326 static int net_resource_used(void *resource_id)
328 return lmm_constraint_used(network_maxmin_system, ((surf_resource_lmm_t)
333 static int net_action_unref(surf_action_t action)
336 if (!action->refcount) {
337 xbt_swag_remove(action, action->state_set);
338 if (((surf_action_lmm_t)action)->variable) {
339 lmm_variable_free(network_maxmin_system,
340 ((surf_action_lmm_t) action)->variable);
342 if (network_update_mechanism == UM_LAZY) { // remove action from the heap
343 heap_remove((surf_action_network_CM02_t) action);
344 xbt_swag_remove(action, net_modified_set);
347 xbt_free(((surf_action_network_CM02_t) action)->src_name);
348 xbt_free(((surf_action_network_CM02_t) action)->dst_name);
349 xbt_free(action->category);
351 surf_action_free(&action);
359 static void net_action_cancel(surf_action_t action)
361 XBT_DEBUG("cancel action %p", action);
362 surf_network_model->action_state_set(action, SURF_ACTION_FAILED);
363 if (network_update_mechanism == UM_LAZY) { // remove action from the heap
364 xbt_swag_remove(action, net_modified_set);
365 heap_remove((surf_action_network_CM02_t) action);
369 void net_action_recycle(surf_action_t action)
374 #ifdef HAVE_LATENCY_BOUND_TRACKING
375 int net_get_link_latency_limited(surf_action_t action)
377 return action->latency_limited;
381 double net_action_get_remains(surf_action_t action)
383 if (network_update_mechanism == UM_LAZY) /* update remains before return it */
384 update_action_remaining_lazy(surf_get_clock());
385 return action->remains;
388 static void update_action_remaining_lazy(double now)
390 surf_action_network_CM02_t action = NULL;
393 xbt_swag_foreach(action, net_modified_set) {
395 if (GENERIC_LMM_ACTION(action).suspended != 0) {
399 delta = now - action->last_update;
401 double_update(&(((surf_action_t)action)->remains),
402 lmm_variable_getvalue(((surf_action_lmm_t) action)->variable) * delta);
404 if (((surf_action_t)action)->max_duration != NO_MAX_DURATION)
405 double_update(&(((surf_action_t)action)->max_duration), delta);
407 if ((((surf_action_t)action)->remains <= 0) &&
408 (lmm_get_variable_weight(((surf_action_lmm_t)action)->variable) > 0)) {
409 ((surf_action_t)action)->finish = surf_get_clock();
410 surf_network_model->action_state_set((surf_action_t) action,
413 } else if (((((surf_action_t)action)->max_duration != NO_MAX_DURATION)
414 && (((surf_action_t)action)->max_duration <= 0))) {
415 ((surf_action_t)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_lmm_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 GENERIC_LMM_ACTION(action).latency_limited = 1;
446 GENERIC_LMM_ACTION(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;
466 ("Before share resources, the size of modified actions set is %d",
467 xbt_swag_size(net_modified_set));
468 update_action_remaining_lazy(now);
470 lmm_solve(network_maxmin_system);
473 ("After share resources, The size of modified actions set is %d",
474 xbt_swag_size(net_modified_set));
476 xbt_swag_foreach(action, net_modified_set) {
477 int max_dur_flag = 0;
479 if (GENERIC_ACTION(action).state_set !=
480 surf_network_model->states.running_action_set)
483 /* bogus priority, skip it */
484 if (GENERIC_ACTION(action).priority <= 0)
488 value = lmm_variable_getvalue(GENERIC_LMM_ACTION(action).variable);
490 if (GENERIC_ACTION(action).remains > 0) {
491 value = GENERIC_ACTION(action).remains / value;
499 if ((GENERIC_ACTION(action).max_duration != NO_MAX_DURATION)
501 || GENERIC_ACTION(action).start +
502 GENERIC_ACTION(action).max_duration < min)) {
503 min = GENERIC_ACTION(action).start +
504 GENERIC_ACTION(action).max_duration;
508 XBT_DEBUG("Action(%p) Start %lf Finish %lf Max_duration %lf", action,
509 GENERIC_ACTION(action).start, now + value,
510 GENERIC_ACTION(action).max_duration);
512 if (action->index_heap >= 0) {
517 heap_insert((surf_action_network_CM02_t) action, min,
518 max_dur_flag ? MAX_DURATION : NORMAL);
519 XBT_DEBUG("Insert at heap action(%p) min %lf now %lf", action, min,
524 //hereafter must have already the min value for this resource model
525 if (xbt_heap_size(net_action_heap) > 0)
526 min = xbt_heap_maxkey(net_action_heap) - now;
530 XBT_DEBUG("The minimum with the HEAP %lf", min);
535 static void net_update_actions_state_full(double now, double delta)
538 surf_action_network_CM02_t action = NULL;
539 surf_action_network_CM02_t next_action = NULL;
540 xbt_swag_t running_actions =
541 surf_network_model->states.running_action_set;
543 xbt_swag_t failed_actions =
544 surf_network_model->states.failed_action_set;
547 xbt_swag_foreach_safe(action, next_action, running_actions) {
549 if (action->latency > 0) {
550 if (action->latency > deltap) {
551 double_update(&(action->latency), deltap);
554 double_update(&(deltap), action->latency);
555 action->latency = 0.0;
557 if ((action->latency == 0.0) && !(GENERIC_LMM_ACTION(action).suspended))
558 lmm_update_variable_weight(network_maxmin_system, GENERIC_LMM_ACTION(action).variable,
562 if (TRACE_is_enabled()) {
563 xbt_dynar_t route = NULL;
564 routing_get_route_and_latency(action->src_name, action->dst_name,
568 xbt_dynar_foreach(route, i, link) {
569 TRACE_surf_link_set_utilization(link->lmm_resource.
570 generic_resource.name,
571 (((surf_action_t)action)->data,
572 (surf_action_t) action,
573 lmm_variable_getvalue(action->
579 if (!lmm_get_number_of_cnst_from_var
580 (network_maxmin_system, GENERIC_LMM_ACTION(action).variable)) {
581 /* There is actually no link used, hence an infinite bandwidth.
582 * This happens often when using models like vivaldi.
583 * In such case, just make sure that the action completes immediately.
585 double_update(&(GENERIC_ACTION(action).remains),
586 GENERIC_ACTION(action).remains);
588 double_update(&(GENERIC_ACTION(action).remains),
589 lmm_variable_getvalue(GENERIC_LMM_ACTION(action).variable) * deltap);
590 if (((surf_action_t)action)->max_duration != NO_MAX_DURATION)
591 double_update(&(((surf_action_t)action)->max_duration), delta);
593 if ((GENERIC_ACTION(action).remains <= 0) &&
594 (lmm_get_variable_weight(GENERIC_LMM_ACTION(action).variable) > 0)) {
595 ((surf_action_t)action)->finish = surf_get_clock();
596 surf_network_model->action_state_set((surf_action_t) action,
601 } else if ((((surf_action_t)action)->max_duration != NO_MAX_DURATION)
602 && (((surf_action_t)action)->max_duration <= 0)) {
603 ((surf_action_t)action)->finish = surf_get_clock();
604 surf_network_model->action_state_set((surf_action_t) action,
614 static void net_update_actions_state_lazy(double now, double delta)
616 surf_action_network_CM02_t action = NULL;
618 while ((xbt_heap_size(net_action_heap) > 0)
619 && (double_equals(xbt_heap_maxkey(net_action_heap), now))) {
620 action = xbt_heap_pop(net_action_heap);
621 XBT_DEBUG("Action %p: finish", action);
622 GENERIC_ACTION(action).finish = surf_get_clock();
624 // if I am wearing a latency hat
625 if (action->hat == LATENCY) {
626 lmm_update_variable_weight(network_maxmin_system, GENERIC_LMM_ACTION(action).variable,
629 action->last_update = surf_get_clock();
631 // if I am wearing a max_duration or normal hat
632 } else if (action->hat == MAX_DURATION || action->hat == NORMAL) {
633 // no need to communicate anymore
634 // assume that flows that reached max_duration have remaining of 0
635 GENERIC_ACTION(action).remains = 0;
636 ((surf_action_t)action)->finish = surf_get_clock();
637 surf_network_model->action_state_set((surf_action_t) action,
645 static void net_update_resource_state(void *id,
646 tmgr_trace_event_t event_type,
647 double value, double date)
649 link_CM02_t nw_link = id;
650 /* printf("[" "%lg" "] Asking to update network card \"%s\" with value " */
651 /* "%lg" " for event %p\n", surf_get_clock(), nw_link->name, */
652 /* value, event_type); */
654 if (event_type == nw_link->lmm_resource.power.event) {
656 sg_weight_S_parameter / value - sg_weight_S_parameter /
657 (nw_link->lmm_resource.power.peak *
658 nw_link->lmm_resource.power.scale);
659 lmm_variable_t var = NULL;
660 lmm_element_t elem = NULL;
661 surf_action_network_CM02_t action = NULL;
663 nw_link->lmm_resource.power.peak = value;
664 lmm_update_constraint_bound(network_maxmin_system,
665 nw_link->lmm_resource.constraint,
666 sg_bandwidth_factor *
667 (nw_link->lmm_resource.power.peak *
668 nw_link->lmm_resource.power.scale));
670 TRACE_surf_link_set_bandwidth(date,
672 *) (((nw_link->lmm_resource).
673 generic_resource).name),
674 sg_bandwidth_factor *
675 (nw_link->lmm_resource.power.peak *
676 nw_link->lmm_resource.power.scale));
678 if (sg_weight_S_parameter > 0) {
679 while ((var = lmm_get_var_from_cnst
680 (network_maxmin_system, nw_link->lmm_resource.constraint,
682 action = lmm_variable_id(var);
683 action->weight += delta;
684 if (!(GENERIC_LMM_ACTION(action).suspended))
685 lmm_update_variable_weight(network_maxmin_system,
686 GENERIC_LMM_ACTION(action).variable, action->weight);
689 if (tmgr_trace_event_free(event_type))
690 nw_link->lmm_resource.power.event = NULL;
691 } else if (event_type == nw_link->lat_event) {
692 double delta = value - nw_link->lat_current;
693 lmm_variable_t var = NULL;
694 lmm_element_t elem = NULL;
695 surf_action_network_CM02_t action = NULL;
697 nw_link->lat_current = value;
698 while ((var = lmm_get_var_from_cnst
699 (network_maxmin_system, nw_link->lmm_resource.constraint,
701 action = lmm_variable_id(var);
702 action->lat_current += delta;
703 action->weight += delta;
704 if (action->rate < 0)
705 lmm_update_variable_bound(network_maxmin_system, GENERIC_LMM_ACTION(action).variable,
706 sg_tcp_gamma / (2.0 *
707 action->lat_current));
709 lmm_update_variable_bound(network_maxmin_system, GENERIC_LMM_ACTION(action).variable,
711 sg_tcp_gamma / (2.0 *
715 if (action->rate < sg_tcp_gamma / (2.0 * action->lat_current)) {
716 XBT_INFO("Flow is limited BYBANDWIDTH");
718 XBT_INFO("Flow is limited BYLATENCY, latency of flow is %f",
719 action->lat_current);
722 if (!(GENERIC_LMM_ACTION(action).suspended))
723 lmm_update_variable_weight(network_maxmin_system, GENERIC_LMM_ACTION(action).variable,
727 if (tmgr_trace_event_free(event_type))
728 nw_link->lat_event = NULL;
729 } else if (event_type == nw_link->lmm_resource.state_event) {
731 nw_link->lmm_resource.state_current = SURF_RESOURCE_ON;
733 lmm_constraint_t cnst = nw_link->lmm_resource.constraint;
734 lmm_variable_t var = NULL;
735 lmm_element_t elem = NULL;
737 nw_link->lmm_resource.state_current = SURF_RESOURCE_OFF;
738 while ((var = lmm_get_var_from_cnst
739 (network_maxmin_system, cnst, &elem))) {
740 surf_action_t action = lmm_variable_id(var);
742 if (surf_action_state_get(action) == SURF_ACTION_RUNNING ||
743 surf_action_state_get(action) == SURF_ACTION_READY) {
744 action->finish = date;
745 surf_network_model->action_state_set(action, SURF_ACTION_FAILED);
749 if (tmgr_trace_event_free(event_type))
750 nw_link->lmm_resource.state_event = NULL;
752 XBT_CRITICAL("Unknown event ! \n");
757 ("There were a resource state event, need to update actions related to the constraint (%p)",
758 nw_link->lmm_resource.constraint);
763 static surf_action_t net_communicate(const char *src_name,
764 const char *dst_name, double size,
770 surf_action_network_CM02_t action = NULL;
771 double bandwidth_bound;
772 double latency = 0.0;
773 xbt_dynar_t back_route = NULL;
774 int constraints_per_variable = 0;
776 xbt_dynar_t route = xbt_dynar_new(global_routing->size_of_link, NULL);
778 XBT_IN("(%s,%s,%g,%g)", src_name, dst_name, size, rate);
780 routing_get_route_and_latency(src_name, dst_name, &route, &latency);
781 xbt_assert(!xbt_dynar_is_empty(route) || latency,
782 "You're trying to send data from %s to %s but there is no connection at all between these two hosts.",
785 xbt_dynar_foreach(route, i, link) {
786 if (link->lmm_resource.state_current == SURF_RESOURCE_OFF) {
791 if (sg_network_crosstraffic == 1) {
792 routing_get_route_and_latency(dst_name, src_name, &back_route, NULL);
793 xbt_dynar_foreach(back_route, i, link) {
794 if (link->lmm_resource.state_current == SURF_RESOURCE_OFF) {
802 surf_action_new(sizeof(s_surf_action_network_CM02_t), size,
803 surf_network_model, failed);
804 #ifdef HAVE_LATENCY_BOUND_TRACKING
805 (GENERIC_LMM_ACTION(action)).latency_limited = 0;
807 action->weight = action->latency = latency;
809 xbt_swag_insert(action, ((surf_action_t)action)->state_set);
811 if (network_update_mechanism == UM_LAZY) {
812 action->index_heap = -1;
813 action->last_update = surf_get_clock();
816 bandwidth_bound = -1.0;
817 if (sg_weight_S_parameter > 0) {
818 xbt_dynar_foreach(route, i, link) {
820 sg_weight_S_parameter /
821 (link->lmm_resource.power.peak * link->lmm_resource.power.scale);
824 xbt_dynar_foreach(route, i, link) {
825 double bb = bandwidth_factor_callback(size) *
826 (link->lmm_resource.power.peak * link->lmm_resource.power.scale);
828 (bandwidth_bound < 0.0) ? bb : min(bandwidth_bound, bb);
831 action->lat_current = action->latency;
832 action->latency *= latency_factor_callback(size);
834 bandwidth_constraint_callback(action->rate, bandwidth_bound, size);
836 xbt_assert(!xbt_dynar_is_empty(route),
837 "Using a model with a gap (e.g., SMPI) with a platform without links (e.g. vivaldi)!!!");
839 link = *(link_CM02_t *) xbt_dynar_get_ptr(route, 0);
840 gap_append(size, link, action);
841 XBT_DEBUG("Comm %p: %s -> %s gap=%f (lat=%f)",
842 action, src_name, dst_name, action->sender.gap,
846 constraints_per_variable = xbt_dynar_length(route);
847 if (back_route != NULL)
848 constraints_per_variable += xbt_dynar_length(back_route);
850 if (action->latency > 0) {
851 GENERIC_LMM_ACTION(action).variable =
852 lmm_variable_new(network_maxmin_system, action, 0.0, -1.0,
853 constraints_per_variable);
854 if (network_update_mechanism == UM_LAZY) {
855 // add to the heap the event when the latency is payed
856 XBT_DEBUG("Added action (%p) one latency event at date %f", action,
857 action->latency + action->last_update);
858 heap_insert(action, action->latency + action->last_update,
859 xbt_dynar_is_empty(route) ? NORMAL : LATENCY);
862 GENERIC_LMM_ACTION(action).variable =
863 lmm_variable_new(network_maxmin_system, action, 1.0, -1.0,
864 constraints_per_variable);
866 if (action->rate < 0) {
867 lmm_update_variable_bound(network_maxmin_system, GENERIC_LMM_ACTION(action).variable,
868 (action->lat_current > 0) ?
869 sg_tcp_gamma / (2.0 *
870 action->lat_current) : -1.0);
872 lmm_update_variable_bound(network_maxmin_system, GENERIC_LMM_ACTION(action).variable,
873 (action->lat_current > 0) ?
875 sg_tcp_gamma / (2.0 *
876 action->lat_current))
880 xbt_dynar_foreach(route, i, link) {
881 lmm_expand(network_maxmin_system, link->lmm_resource.constraint,
882 GENERIC_LMM_ACTION(action).variable, 1.0);
885 if (sg_network_crosstraffic == 1) {
886 XBT_DEBUG("Fullduplex active adding backward flow using 5%%");
887 xbt_dynar_foreach(back_route, i, link) {
888 lmm_expand(network_maxmin_system, link->lmm_resource.constraint,
889 GENERIC_LMM_ACTION(action).variable, .05);
893 if (TRACE_is_enabled()) {
894 action->src_name = xbt_strdup(src_name);
895 action->dst_name = xbt_strdup(dst_name);
897 action->src_name = action->dst_name = NULL;
901 xbt_dynar_free(&route);
904 return (surf_action_t) action;
907 static xbt_dynar_t net_get_route(const char *src, const char *dst)
909 xbt_dynar_t route = NULL;
910 routing_get_route_and_latency(src, dst, &route, NULL);
914 static double net_get_link_bandwidth(const void *link)
916 surf_resource_lmm_t lmm = (surf_resource_lmm_t) link;
917 return lmm->power.peak * lmm->power.scale;
920 static double net_get_link_latency(const void *link)
922 return ((link_CM02_t) link)->lat_current;
925 static int net_link_shared(const void *link)
928 lmm_constraint_is_shared(((surf_resource_lmm_t) link)->constraint);
931 static void net_action_suspend(surf_action_t action)
933 ((surf_action_network_CM02_t) action)->generic_lmm_action.suspended = 1;
934 lmm_update_variable_weight(network_maxmin_system,
935 ((surf_action_network_CM02_t)
936 action)->generic_lmm_action.variable, 0.0);
938 if (network_update_mechanism == UM_LAZY) // remove action from the heap
939 heap_remove((surf_action_network_CM02_t) action);
942 static void net_action_resume(surf_action_t action)
944 if (((surf_action_network_CM02_t) action)->generic_lmm_action.suspended) {
945 lmm_update_variable_weight(network_maxmin_system,
946 ((surf_action_network_CM02_t)
947 action)->generic_lmm_action.variable,
948 ((surf_action_network_CM02_t)
950 ((surf_action_network_CM02_t) action)->generic_lmm_action.suspended = 0;
951 if (network_update_mechanism == UM_LAZY) // remove action from the heap
952 heap_remove((surf_action_network_CM02_t) action);
956 static int net_action_is_suspended(surf_action_t action)
958 return ((surf_action_network_CM02_t) action)->generic_lmm_action.suspended;
961 void net_action_set_max_duration(surf_action_t action, double duration)
963 action->max_duration = duration;
964 if (network_update_mechanism == UM_LAZY) // remove action from the heap
965 heap_remove((surf_action_network_CM02_t) action);
969 static void net_action_set_category(surf_action_t action,
970 const char *category)
972 action->category = xbt_strdup(category);
976 static void net_finalize(void)
978 surf_model_exit(surf_network_model);
979 surf_network_model = NULL;
981 lmm_system_free(network_maxmin_system);
982 network_maxmin_system = NULL;
984 if (network_update_mechanism == UM_LAZY) {
985 xbt_heap_free(net_action_heap);
986 xbt_swag_free(net_modified_set);
990 xbt_dynar_free(&smpi_bw_factor);
992 xbt_dynar_free(&smpi_lat_factor);
995 static void smpi_gap_append(double size, const link_CM02_t link,
996 surf_action_network_CM02_t action)
998 const char *src = link->lmm_resource.generic_resource.name;
1000 surf_action_network_CM02_t last_action;
1003 if (sg_sender_gap > 0.0) {
1005 gap_lookup = xbt_dict_new();
1007 fifo = (xbt_fifo_t) xbt_dict_get_or_null(gap_lookup, src);
1008 action->sender.gap = 0.0;
1009 if (fifo && xbt_fifo_size(fifo) > 0) {
1010 /* Compute gap from last send */
1012 (surf_action_network_CM02_t)
1013 xbt_fifo_get_item_content(xbt_fifo_get_last_item(fifo));
1014 bw = net_get_link_bandwidth(link);
1015 action->sender.gap =
1016 last_action->sender.gap + max(sg_sender_gap,
1017 last_action->sender.size / bw);
1018 action->latency += action->sender.gap;
1020 /* Append action as last send */
1021 action->sender.link_name = link->lmm_resource.generic_resource.name;
1023 (xbt_fifo_t) xbt_dict_get_or_null(gap_lookup,
1024 action->sender.link_name);
1026 fifo = xbt_fifo_new();
1027 xbt_dict_set(gap_lookup, action->sender.link_name, fifo, NULL);
1029 action->sender.fifo_item = xbt_fifo_push(fifo, action);
1030 action->sender.size = size;
1034 static void smpi_gap_remove(surf_action_network_CM02_t action)
1039 if (sg_sender_gap > 0.0 && action->sender.link_name
1040 && action->sender.fifo_item) {
1042 (xbt_fifo_t) xbt_dict_get_or_null(gap_lookup,
1043 action->sender.link_name);
1044 xbt_fifo_remove_item(fifo, action->sender.fifo_item);
1045 size = xbt_fifo_size(fifo);
1047 xbt_fifo_free(fifo);
1048 xbt_dict_remove(gap_lookup, action->sender.link_name);
1049 size = xbt_dict_length(gap_lookup);
1051 xbt_dict_free(&gap_lookup);
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 surf_network_model->name = "network";
1063 surf_network_model->action_unref = net_action_unref;
1064 surf_network_model->action_cancel = net_action_cancel;
1065 surf_network_model->action_recycle = net_action_recycle;
1066 surf_network_model->get_remains = net_action_get_remains;
1067 #ifdef HAVE_LATENCY_BOUND_TRACKING
1068 surf_network_model->get_latency_limited = net_get_link_latency_limited;
1071 surf_network_model->set_category = net_action_set_category;
1074 surf_network_model->model_private->resource_used = net_resource_used;
1075 if (network_update_mechanism == UM_LAZY) {
1076 surf_network_model->model_private->share_resources =
1077 net_share_resources_lazy;
1078 surf_network_model->model_private->update_actions_state =
1079 net_update_actions_state_lazy;
1080 } else if (network_update_mechanism == UM_FULL) {
1081 surf_network_model->model_private->share_resources =
1082 net_share_resources_full;
1083 surf_network_model->model_private->update_actions_state =
1084 net_update_actions_state_full;
1087 surf_network_model->model_private->update_resource_state =
1088 net_update_resource_state;
1089 surf_network_model->model_private->finalize = net_finalize;
1091 surf_network_model->suspend = net_action_suspend;
1092 surf_network_model->resume = net_action_resume;
1093 surf_network_model->is_suspended = net_action_is_suspended;
1094 surf_cpu_model->set_max_duration = net_action_set_max_duration;
1096 surf_network_model->extension.network.communicate = net_communicate;
1097 surf_network_model->extension.network.get_route = net_get_route;
1098 surf_network_model->extension.network.get_link_bandwidth =
1099 net_get_link_bandwidth;
1100 surf_network_model->extension.network.get_link_latency =
1101 net_get_link_latency;
1102 surf_network_model->extension.network.link_shared = net_link_shared;
1103 surf_network_model->extension.network.add_traces = net_add_traces;
1104 surf_network_model->extension.network.create_resource =
1105 net_create_resource;
1107 if (!network_maxmin_system)
1108 network_maxmin_system = lmm_system_new(net_selective_update);
1110 routing_model_create(sizeof(link_CM02_t),
1111 net_create_resource("__loopback__",
1112 498000000, NULL, 0.000015, NULL,
1113 SURF_RESOURCE_ON, NULL,
1114 SURF_LINK_FATPIPE, NULL));
1116 if (network_update_mechanism == UM_LAZY) {
1117 net_action_heap = xbt_heap_new(8, NULL);
1118 xbt_heap_set_update_callback(net_action_heap,
1119 net_action_update_index_heap);
1121 xbt_swag_new(xbt_swag_offset(comm, action_list_hookup));
1122 network_maxmin_system->keep_track = net_modified_set;
1126 static void set_update_mechanism(void)
1129 TRACE_set_network_update_mechanism();
1132 char *optim = xbt_cfg_get_string(_surf_cfg_set, "network/optim");
1134 xbt_cfg_get_int(_surf_cfg_set, "network/maxmin_selective_update");
1136 if (!strcmp(optim, "Full")) {
1137 network_update_mechanism = UM_FULL;
1138 net_selective_update = select;
1139 } else if (!strcmp(optim, "Lazy")) {
1140 network_update_mechanism = UM_LAZY;
1141 net_selective_update = 1;
1142 xbt_assert((select == 1)
1144 (xbt_cfg_is_default_value
1145 (_surf_cfg_set, "network/maxmin_selective_update")),
1146 "Disabling selective update while using the lazy update mechanism is dumb!");
1148 xbt_die("Unsupported optimization (%s) for this model", optim);
1152 /************************************************************************/
1153 /* New model based on LV08 and experimental results of MPI ping-pongs */
1154 /************************************************************************/
1155 /* @Inproceedings{smpi_ipdps, */
1156 /* author={Pierre-Nicolas Clauss and Mark Stillwell and Stéphane Genaud and Frédéric Suter and Henri Casanova and Martin Quinson}, */
1157 /* title={Single Node On-Line Simulation of {MPI} Applications with SMPI}, */
1158 /* booktitle={25th IEEE International Parallel and Distributed Processing Symposium (IPDPS'11)}, */
1159 /* address={Anchorage (Alaska) USA}, */
1163 void surf_network_model_init_SMPI(void)
1166 if (surf_network_model)
1168 set_update_mechanism();
1170 surf_network_model_init_internal();
1171 latency_factor_callback = &smpi_latency_factor;
1172 bandwidth_factor_callback = &smpi_bandwidth_factor;
1173 bandwidth_constraint_callback = &smpi_bandwidth_constraint;
1174 gap_append = &smpi_gap_append;
1175 gap_remove = &smpi_gap_remove;
1176 net_define_callbacks();
1177 xbt_dynar_push(model_list, &surf_network_model);
1178 network_solve = lmm_solve;
1180 xbt_cfg_setdefault_double(_surf_cfg_set, "network/sender_gap", 10e-6);
1181 xbt_cfg_setdefault_double(_surf_cfg_set, "network/weight_S", 8775);
1184 /************************************************************************/
1185 /* New model based on optimizations discussed during Pedro Velho's thesis*/
1186 /************************************************************************/
1187 /* @techreport{VELHO:2011:HAL-00646896:1, */
1188 /* url = {http://hal.inria.fr/hal-00646896/en/}, */
1189 /* title = {{Flow-level network models: have we reached the limits?}}, */
1190 /* author = {Velho, Pedro and Schnorr, Lucas and Casanova, Henri and Legrand, Arnaud}, */
1191 /* type = {Rapport de recherche}, */
1192 /* institution = {INRIA}, */
1193 /* number = {RR-7821}, */
1194 /* year = {2011}, */
1196 /* pdf = {http://hal.inria.fr/hal-00646896/PDF/rr-validity.pdf}, */
1198 void surf_network_model_init_LegrandVelho(void)
1200 if (surf_network_model)
1203 set_update_mechanism();
1205 surf_network_model_init_internal();
1206 net_define_callbacks();
1207 xbt_dynar_push(model_list, &surf_network_model);
1208 network_solve = lmm_solve;
1210 xbt_cfg_setdefault_double(_surf_cfg_set, "network/latency_factor",
1212 xbt_cfg_setdefault_double(_surf_cfg_set, "network/bandwidth_factor",
1214 xbt_cfg_setdefault_double(_surf_cfg_set, "network/weight_S", 20537);
1217 /***************************************************************************/
1218 /* The nice TCP sharing model designed by Loris Marchal and Henri Casanova */
1219 /***************************************************************************/
1220 /* @TechReport{ rr-lip2002-40, */
1221 /* author = {Henri Casanova and Loris Marchal}, */
1222 /* institution = {LIP}, */
1223 /* title = {A Network Model for Simulation of Grid Application}, */
1224 /* number = {2002-40}, */
1225 /* month = {oct}, */
1228 void surf_network_model_init_CM02(void)
1231 if (surf_network_model)
1234 set_update_mechanism();
1235 surf_network_model_init_internal();
1236 net_define_callbacks();
1237 xbt_dynar_push(model_list, &surf_network_model);
1238 network_solve = lmm_solve;
1240 xbt_cfg_setdefault_double(_surf_cfg_set, "network/latency_factor", 1.0);
1241 xbt_cfg_setdefault_double(_surf_cfg_set, "network/bandwidth_factor",
1243 xbt_cfg_setdefault_double(_surf_cfg_set, "network/weight_S", 0.0);
1246 /***************************************************************************/
1247 /* The models from Steven H. Low */
1248 /***************************************************************************/
1249 /* @article{Low03, */
1250 /* author={Steven H. Low}, */
1251 /* title={A Duality Model of {TCP} and Queue Management Algorithms}, */
1253 /* journal={{IEEE/ACM} Transactions on Networking}, */
1254 /* volume={11}, number={4}, */
1256 void surf_network_model_init_Reno(void)
1258 if (surf_network_model)
1261 set_update_mechanism();
1262 surf_network_model_init_internal();
1263 net_define_callbacks();
1265 xbt_dynar_push(model_list, &surf_network_model);
1266 lmm_set_default_protocol_function(func_reno_f, func_reno_fp,
1268 network_solve = lagrange_solve;
1270 xbt_cfg_setdefault_double(_surf_cfg_set, "network/latency_factor", 10.4);
1271 xbt_cfg_setdefault_double(_surf_cfg_set, "network/bandwidth_factor",
1273 xbt_cfg_setdefault_double(_surf_cfg_set, "network/weight_S", 8775);
1277 void surf_network_model_init_Reno2(void)
1279 if (surf_network_model)
1282 set_update_mechanism();
1283 surf_network_model_init_internal();
1284 net_define_callbacks();
1286 xbt_dynar_push(model_list, &surf_network_model);
1287 lmm_set_default_protocol_function(func_reno2_f, func_reno2_fp,
1289 network_solve = lagrange_solve;
1291 xbt_cfg_setdefault_double(_surf_cfg_set, "network/latency_factor", 10.4);
1292 xbt_cfg_setdefault_double(_surf_cfg_set, "network/bandwidth_factor",
1294 xbt_cfg_setdefault_double(_surf_cfg_set, "network/weight_S_parameter",
1298 void surf_network_model_init_Vegas(void)
1300 if (surf_network_model)
1303 set_update_mechanism();
1304 surf_network_model_init_internal();
1305 net_define_callbacks();
1307 xbt_dynar_push(model_list, &surf_network_model);
1308 lmm_set_default_protocol_function(func_vegas_f, func_vegas_fp,
1310 network_solve = lagrange_solve;
1312 xbt_cfg_setdefault_double(_surf_cfg_set, "network/latency_factor", 10.4);
1313 xbt_cfg_setdefault_double(_surf_cfg_set, "network/bandwidth_factor",
1315 xbt_cfg_setdefault_double(_surf_cfg_set, "network/weight_S", 8775);