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 /******************************************************************************/
59 /* Factors callbacks */
60 /******************************************************************************/
61 static double constant_latency_factor(double size)
63 return sg_latency_factor;
66 static double constant_bandwidth_factor(double size)
68 return sg_bandwidth_factor;
71 static double constant_bandwidth_constraint(double rate, double bound,
77 /**********************/
79 /**********************/
80 static xbt_dynar_t parse_factor(const char *smpi_coef_string)
83 unsigned int iter = 0;
85 xbt_dynar_t smpi_factor, radical_elements, radical_elements2 = NULL;
87 smpi_factor = xbt_dynar_new(sizeof(s_smpi_factor_t), NULL);
88 radical_elements = xbt_str_split(smpi_coef_string, ";");
89 xbt_dynar_foreach(radical_elements, iter, value) {
91 radical_elements2 = xbt_str_split(value, ":");
92 if (xbt_dynar_length(radical_elements2) != 2)
93 xbt_die("Malformed radical for smpi factor!");
94 fact.factor = atol(xbt_dynar_get_as(radical_elements2, 0, char *));
95 fact.value = atof(xbt_dynar_get_as(radical_elements2, 1, char *));
96 xbt_dynar_push_as(smpi_factor, s_smpi_factor_t, fact);
97 XBT_DEBUG("smpi_factor:\t%ld : %f", fact.factor, fact.value);
98 xbt_dynar_free(&radical_elements2);
100 xbt_dynar_free(&radical_elements);
104 static double smpi_bandwidth_factor(double size)
108 parse_factor(xbt_cfg_get_string(_surf_cfg_set, "smpi/bw_factor"));
110 unsigned int iter = 0;
111 s_smpi_factor_t fact;
112 xbt_dynar_foreach(smpi_bw_factor, iter, fact) {
113 if (size >= fact.factor) {
114 XBT_DEBUG("%lf >= %ld return %f", size, fact.factor, fact.value);
122 static double smpi_latency_factor(double size)
124 if (!smpi_lat_factor)
126 parse_factor(xbt_cfg_get_string(_surf_cfg_set, "smpi/lat_factor"));
128 unsigned int iter = 0;
129 s_smpi_factor_t fact;
130 xbt_dynar_foreach(smpi_lat_factor, iter, fact) {
131 if (size >= fact.factor) {
132 XBT_DEBUG("%lf >= %ld return %f", size, fact.factor, fact.value);
140 /**--------- <copy/paste C code snippet in surf/network.c> -----------*/
142 static double smpi_bandwidth_constraint(double rate, double bound,
145 return rate < 0 ? bound : min(bound, rate * smpi_bandwidth_factor(size));
148 static double (*latency_factor_callback) (double) =
149 &constant_latency_factor;
150 static double (*bandwidth_factor_callback) (double) =
151 &constant_bandwidth_factor;
152 static double (*bandwidth_constraint_callback) (double, double, double) =
153 &constant_bandwidth_constraint;
155 static void (*gap_append) (double, const link_CM02_t,
156 surf_action_network_CM02_t) = NULL;
157 static void (*gap_remove) (surf_action_network_CM02_t) = NULL;
159 static void *net_create_resource(const char *name,
161 tmgr_trace_t bw_trace,
163 tmgr_trace_t lat_trace,
164 e_surf_resource_state_t
166 tmgr_trace_t state_trace,
167 e_surf_link_sharing_policy_t
168 policy, xbt_dict_t properties)
170 link_CM02_t nw_link = (link_CM02_t)
171 surf_resource_lmm_new(sizeof(s_link_CM02_t),
172 surf_network_model, name, properties,
173 surf_network_model->model_private->maxmin_system,
174 sg_bandwidth_factor * bw_initial,
176 state_initial, state_trace,
177 bw_initial, bw_trace);
179 xbt_assert(!xbt_lib_get_or_null(link_lib, name, SURF_LINK_LEVEL),
180 "Link '%s' declared several times in the platform file.",
183 nw_link->lat_current = lat_initial;
186 tmgr_history_add_trace(history, lat_trace, 0.0, 0, nw_link);
188 if (policy == SURF_LINK_FATPIPE)
189 lmm_constraint_shared(nw_link->lmm_resource.constraint);
191 xbt_lib_set(link_lib, name, SURF_LINK_LEVEL, nw_link);
192 XBT_DEBUG("Create link '%s'",name);
197 static void net_parse_link_init(sg_platf_link_cbarg_t link)
199 if (link->policy == SURF_LINK_FULLDUPLEX) {
201 link_id = bprintf("%s_UP", link->id);
202 net_create_resource(link_id,
204 link->bandwidth_trace,
208 link->state_trace, link->policy, link->properties);
210 link_id = bprintf("%s_DOWN", link->id);
211 net_create_resource(link_id,
213 link->bandwidth_trace,
217 link->state_trace, link->policy, link->properties);
220 net_create_resource(link->id,
222 link->bandwidth_trace,
226 link->state_trace, link->policy, link->properties);
230 static void net_add_traces(void)
232 xbt_dict_cursor_t cursor = NULL;
233 char *trace_name, *elm;
235 static int called = 0;
240 /* connect all traces relative to network */
241 xbt_dict_foreach(trace_connect_list_link_avail, cursor, trace_name, elm) {
242 tmgr_trace_t trace = xbt_dict_get_or_null(traces_set_list, trace_name);
243 link_CM02_t link = xbt_lib_get_or_null(link_lib, elm, SURF_LINK_LEVEL);
245 xbt_assert(link, "Cannot connect trace %s to link %s: link undefined",
248 "Cannot connect trace %s to link %s: trace undefined",
251 link->lmm_resource.state_event =
252 tmgr_history_add_trace(history, trace, 0.0, 0, link);
255 xbt_dict_foreach(trace_connect_list_bandwidth, cursor, trace_name, elm) {
256 tmgr_trace_t trace = xbt_dict_get_or_null(traces_set_list, trace_name);
257 link_CM02_t link = xbt_lib_get_or_null(link_lib, elm, SURF_LINK_LEVEL);
259 xbt_assert(link, "Cannot connect trace %s to link %s: link undefined",
262 "Cannot connect trace %s to link %s: trace undefined",
265 link->lmm_resource.power.event =
266 tmgr_history_add_trace(history, trace, 0.0, 0, link);
269 xbt_dict_foreach(trace_connect_list_latency, cursor, trace_name, elm) {
270 tmgr_trace_t trace = xbt_dict_get_or_null(traces_set_list, trace_name);
271 link_CM02_t link = xbt_lib_get_or_null(link_lib, elm, SURF_LINK_LEVEL);
273 xbt_assert(link, "Cannot connect trace %s to link %s: link undefined",
276 "Cannot connect trace %s to link %s: trace undefined",
279 link->lat_event = tmgr_history_add_trace(history, trace, 0.0, 0, link);
283 static void net_define_callbacks(void)
285 /* Figuring out the network links */
286 sg_platf_link_add_cb(net_parse_link_init);
287 sg_platf_postparse_add_cb(net_add_traces);
290 static int net_resource_used(void *resource_id)
292 return lmm_constraint_used(surf_network_model->model_private->maxmin_system, ((surf_resource_lmm_t)
297 void net_action_recycle(surf_action_t action)
302 #ifdef HAVE_LATENCY_BOUND_TRACKING
303 int net_get_link_latency_limited(surf_action_t action)
305 return action->latency_limited;
309 static double net_share_resources_full(double now)
311 s_surf_action_lmm_t s_action;
312 surf_action_network_CM02_t action = NULL;
313 xbt_swag_t running_actions =
314 surf_network_model->states.running_action_set;
317 min = generic_maxmin_share_resources(running_actions,
318 xbt_swag_offset(s_action,
320 surf_network_model->model_private->maxmin_system,
323 #define VARIABLE(action) (*((lmm_variable_t*)(((char *) (action)) + xbt_swag_offset(s_action, variable) )))
325 xbt_swag_foreach(action, running_actions) {
326 #ifdef HAVE_LATENCY_BOUND_TRACKING
327 if (lmm_is_variable_limited_by_latency(GENERIC_LMM_ACTION(action).variable)) {
328 action->latency_limited = 1;
330 action->latency_limited = 0;
333 if (action->latency > 0) {
334 min = (min < 0) ? action->latency : min(min, action->latency);
338 XBT_DEBUG("Min of share resources %f", min);
343 static double net_share_resources_lazy(double now)
345 return generic_share_resources_lazy(now, surf_network_model);
348 static void net_update_actions_state_full(double now, double delta)
351 surf_action_network_CM02_t action = NULL;
352 surf_action_network_CM02_t next_action = NULL;
353 xbt_swag_t running_actions =
354 surf_network_model->states.running_action_set;
356 xbt_swag_t failed_actions =
357 surf_network_model->states.failed_action_set;
360 xbt_swag_foreach_safe(action, next_action, running_actions) {
362 if (action->latency > 0) {
363 if (action->latency > deltap) {
364 double_update(&(action->latency), deltap);
367 double_update(&(deltap), action->latency);
368 action->latency = 0.0;
370 if ((action->latency == 0.0) && !(GENERIC_LMM_ACTION(action).suspended))
371 lmm_update_variable_weight(surf_network_model->model_private->maxmin_system, GENERIC_LMM_ACTION(action).variable,
375 if (TRACE_is_enabled()) {
376 int n = lmm_get_number_of_cnst_from_var(surf_network_model->model_private->maxmin_system, GENERIC_LMM_ACTION(action).variable);
378 for (i = 0; i < n; i++){
379 lmm_constraint_t constraint = lmm_get_cnst_from_var(surf_network_model->model_private->maxmin_system,
380 GENERIC_LMM_ACTION(action).variable,
382 link_CM02_t link = lmm_constraint_id(constraint);
383 TRACE_surf_link_set_utilization(link->lmm_resource.generic_resource.name,
384 ((surf_action_t)action)->category,
385 (lmm_variable_getvalue(GENERIC_LMM_ACTION(action).variable)*
386 lmm_get_cnst_weight_from_var(surf_network_model->model_private->maxmin_system,
387 GENERIC_LMM_ACTION(action).variable,
394 if (!lmm_get_number_of_cnst_from_var
395 (surf_network_model->model_private->maxmin_system, GENERIC_LMM_ACTION(action).variable)) {
396 /* There is actually no link used, hence an infinite bandwidth.
397 * This happens often when using models like vivaldi.
398 * In such case, just make sure that the action completes immediately.
400 double_update(&(GENERIC_ACTION(action).remains),
401 GENERIC_ACTION(action).remains);
403 double_update(&(GENERIC_ACTION(action).remains),
404 lmm_variable_getvalue(GENERIC_LMM_ACTION(action).variable) * deltap);
405 if (((surf_action_t)action)->max_duration != NO_MAX_DURATION)
406 double_update(&(((surf_action_t)action)->max_duration), delta);
408 if ((GENERIC_ACTION(action).remains <= 0) &&
409 (lmm_get_variable_weight(GENERIC_LMM_ACTION(action).variable) > 0)) {
410 ((surf_action_t)action)->finish = surf_get_clock();
411 surf_network_model->action_state_set((surf_action_t) action,
416 } else if ((((surf_action_t)action)->max_duration != NO_MAX_DURATION)
417 && (((surf_action_t)action)->max_duration <= 0)) {
418 ((surf_action_t)action)->finish = surf_get_clock();
419 surf_network_model->action_state_set((surf_action_t) action,
429 static void net_update_actions_state_lazy(double now, double delta)
431 surf_action_network_CM02_t action = NULL;
433 while ((xbt_heap_size(surf_network_model->model_private->action_heap) > 0)
434 && (double_equals(xbt_heap_maxkey(surf_network_model->model_private->action_heap), now))) {
435 action = xbt_heap_pop(surf_network_model->model_private->action_heap);
436 XBT_DEBUG("Action %p: finish", action);
437 GENERIC_ACTION(action).finish = surf_get_clock();
439 if (TRACE_is_enabled()) {
440 int n = lmm_get_number_of_cnst_from_var(surf_network_model->model_private->maxmin_system, GENERIC_LMM_ACTION(action).variable);
442 for (i = 0; i < n; i++){
443 lmm_constraint_t constraint = lmm_get_cnst_from_var(surf_network_model->model_private->maxmin_system,
444 GENERIC_LMM_ACTION(action).variable,
446 link_CM02_t link = lmm_constraint_id(constraint);
447 TRACE_surf_link_set_utilization(link->lmm_resource.generic_resource.name,
448 ((surf_action_t)action)->category,
449 (lmm_variable_getvalue(GENERIC_LMM_ACTION(action).variable)*
450 lmm_get_cnst_weight_from_var(surf_network_model->model_private->maxmin_system,
451 GENERIC_LMM_ACTION(action).variable,
453 GENERIC_LMM_ACTION(action).last_update,
454 now - GENERIC_LMM_ACTION(action).last_update);
459 // if I am wearing a latency hat
460 if (GENERIC_LMM_ACTION(action).hat == LATENCY) {
461 lmm_update_variable_weight(surf_network_model->model_private->maxmin_system, GENERIC_LMM_ACTION(action).variable,
463 surf_action_lmm_heap_remove(surf_network_model->model_private->action_heap,(surf_action_lmm_t)action);
464 GENERIC_LMM_ACTION(action).last_update = surf_get_clock();
466 // if I am wearing a max_duration or normal hat
467 } else if (GENERIC_LMM_ACTION(action).hat == MAX_DURATION ||
468 GENERIC_LMM_ACTION(action).hat == NORMAL) {
469 // no need to communicate anymore
470 // assume that flows that reached max_duration have remaining of 0
471 GENERIC_ACTION(action).remains = 0;
472 ((surf_action_t)action)->finish = surf_get_clock();
473 surf_network_model->action_state_set((surf_action_t) action,
475 surf_action_lmm_heap_remove(surf_network_model->model_private->action_heap,(surf_action_lmm_t)action);
481 static void net_update_resource_state(void *id,
482 tmgr_trace_event_t event_type,
483 double value, double date)
485 link_CM02_t nw_link = id;
486 /* printf("[" "%lg" "] Asking to update network card \"%s\" with value " */
487 /* "%lg" " for event %p\n", surf_get_clock(), nw_link->name, */
488 /* value, event_type); */
490 if (event_type == nw_link->lmm_resource.power.event) {
492 sg_weight_S_parameter / value - sg_weight_S_parameter /
493 (nw_link->lmm_resource.power.peak *
494 nw_link->lmm_resource.power.scale);
495 lmm_variable_t var = NULL;
496 lmm_element_t elem = NULL;
497 surf_action_network_CM02_t action = NULL;
499 nw_link->lmm_resource.power.peak = value;
500 lmm_update_constraint_bound(surf_network_model->model_private->maxmin_system,
501 nw_link->lmm_resource.constraint,
502 sg_bandwidth_factor *
503 (nw_link->lmm_resource.power.peak *
504 nw_link->lmm_resource.power.scale));
506 TRACE_surf_link_set_bandwidth(date,
508 *) (((nw_link->lmm_resource).
509 generic_resource).name),
510 sg_bandwidth_factor *
511 (nw_link->lmm_resource.power.peak *
512 nw_link->lmm_resource.power.scale));
514 if (sg_weight_S_parameter > 0) {
515 while ((var = lmm_get_var_from_cnst
516 (surf_network_model->model_private->maxmin_system, nw_link->lmm_resource.constraint,
518 action = lmm_variable_id(var);
519 action->weight += delta;
520 if (!(GENERIC_LMM_ACTION(action).suspended))
521 lmm_update_variable_weight(surf_network_model->model_private->maxmin_system,
522 GENERIC_LMM_ACTION(action).variable, action->weight);
525 if (tmgr_trace_event_free(event_type))
526 nw_link->lmm_resource.power.event = NULL;
527 } else if (event_type == nw_link->lat_event) {
528 double delta = value - nw_link->lat_current;
529 lmm_variable_t var = NULL;
530 lmm_element_t elem = NULL;
531 surf_action_network_CM02_t action = NULL;
533 nw_link->lat_current = value;
534 while ((var = lmm_get_var_from_cnst
535 (surf_network_model->model_private->maxmin_system, nw_link->lmm_resource.constraint,
537 action = lmm_variable_id(var);
538 action->lat_current += delta;
539 action->weight += delta;
540 if (action->rate < 0)
541 lmm_update_variable_bound(surf_network_model->model_private->maxmin_system, GENERIC_LMM_ACTION(action).variable,
542 sg_tcp_gamma / (2.0 *
543 action->lat_current));
545 lmm_update_variable_bound(surf_network_model->model_private->maxmin_system, GENERIC_LMM_ACTION(action).variable,
547 sg_tcp_gamma / (2.0 *
551 if (action->rate < sg_tcp_gamma / (2.0 * action->lat_current)) {
552 XBT_INFO("Flow is limited BYBANDWIDTH");
554 XBT_INFO("Flow is limited BYLATENCY, latency of flow is %f",
555 action->lat_current);
558 if (!(GENERIC_LMM_ACTION(action).suspended))
559 lmm_update_variable_weight(surf_network_model->model_private->maxmin_system, GENERIC_LMM_ACTION(action).variable,
563 if (tmgr_trace_event_free(event_type))
564 nw_link->lat_event = NULL;
565 } else if (event_type == nw_link->lmm_resource.state_event) {
567 nw_link->lmm_resource.state_current = SURF_RESOURCE_ON;
569 lmm_constraint_t cnst = nw_link->lmm_resource.constraint;
570 lmm_variable_t var = NULL;
571 lmm_element_t elem = NULL;
573 nw_link->lmm_resource.state_current = SURF_RESOURCE_OFF;
574 while ((var = lmm_get_var_from_cnst
575 (surf_network_model->model_private->maxmin_system, cnst, &elem))) {
576 surf_action_t action = lmm_variable_id(var);
578 if (surf_action_state_get(action) == SURF_ACTION_RUNNING ||
579 surf_action_state_get(action) == SURF_ACTION_READY) {
580 action->finish = date;
581 surf_network_model->action_state_set(action, SURF_ACTION_FAILED);
585 if (tmgr_trace_event_free(event_type))
586 nw_link->lmm_resource.state_event = NULL;
588 XBT_CRITICAL("Unknown event ! \n");
593 ("There were a resource state event, need to update actions related to the constraint (%p)",
594 nw_link->lmm_resource.constraint);
599 static surf_action_t net_communicate(sg_routing_edge_t src,
600 sg_routing_edge_t dst,
601 double size, double rate)
606 surf_action_network_CM02_t action = NULL;
607 double bandwidth_bound;
608 double latency = 0.0;
609 xbt_dynar_t back_route = NULL;
610 int constraints_per_variable = 0;
612 xbt_dynar_t route = xbt_dynar_new(sizeof(sg_routing_link_t), NULL);
614 XBT_IN("(%s,%s,%g,%g)", src->name, dst->name, size, rate);
616 routing_get_route_and_latency(src, dst, &route, &latency);
617 xbt_assert(!xbt_dynar_is_empty(route) || latency,
618 "You're trying to send data from %s to %s but there is no connection at all between these two hosts.",
619 src->name, dst->name);
621 xbt_dynar_foreach(route, i, link) {
622 if (link->lmm_resource.state_current == SURF_RESOURCE_OFF) {
627 if (sg_network_crosstraffic == 1) {
628 routing_get_route_and_latency(dst, src, &back_route, NULL);
629 xbt_dynar_foreach(back_route, i, link) {
630 if (link->lmm_resource.state_current == SURF_RESOURCE_OFF) {
638 surf_action_new(sizeof(s_surf_action_network_CM02_t), size,
639 surf_network_model, failed);
640 #ifdef HAVE_LATENCY_BOUND_TRACKING
641 action->latency_limited = 0;
643 action->weight = action->latency = latency;
645 xbt_swag_insert(action, ((surf_action_t)action)->state_set);
647 if (surf_network_model->model_private->update_mechanism == UM_LAZY) {
648 GENERIC_LMM_ACTION(action).index_heap = -1;
649 GENERIC_LMM_ACTION(action).last_update = surf_get_clock();
652 bandwidth_bound = -1.0;
653 if (sg_weight_S_parameter > 0) {
654 xbt_dynar_foreach(route, i, link) {
656 sg_weight_S_parameter /
657 (link->lmm_resource.power.peak * link->lmm_resource.power.scale);
660 xbt_dynar_foreach(route, i, link) {
661 double bb = bandwidth_factor_callback(size) *
662 (link->lmm_resource.power.peak * link->lmm_resource.power.scale);
664 (bandwidth_bound < 0.0) ? bb : min(bandwidth_bound, bb);
667 action->lat_current = action->latency;
668 action->latency *= latency_factor_callback(size);
670 bandwidth_constraint_callback(action->rate, bandwidth_bound, size);
672 xbt_assert(!xbt_dynar_is_empty(route),
673 "Using a model with a gap (e.g., SMPI) with a platform without links (e.g. vivaldi)!!!");
675 link = *(link_CM02_t *) xbt_dynar_get_ptr(route, 0);
676 gap_append(size, link, action);
677 XBT_DEBUG("Comm %p: %s -> %s gap=%f (lat=%f)",
678 action, src->name, dst->name, action->sender.gap,
682 constraints_per_variable = xbt_dynar_length(route);
683 if (back_route != NULL)
684 constraints_per_variable += xbt_dynar_length(back_route);
686 if (action->latency > 0) {
687 GENERIC_LMM_ACTION(action).variable =
688 lmm_variable_new(surf_network_model->model_private->maxmin_system, action, 0.0, -1.0,
689 constraints_per_variable);
690 if (surf_network_model->model_private->update_mechanism == UM_LAZY) {
691 // add to the heap the event when the latency is payed
692 XBT_DEBUG("Added action (%p) one latency event at date %f", action,
693 action->latency + GENERIC_LMM_ACTION(action).last_update);
694 surf_action_lmm_heap_insert(surf_network_model->model_private->action_heap,(surf_action_lmm_t)action, action->latency + GENERIC_LMM_ACTION(action).last_update,
695 xbt_dynar_is_empty(route) ? NORMAL : LATENCY);
698 GENERIC_LMM_ACTION(action).variable =
699 lmm_variable_new(surf_network_model->model_private->maxmin_system, action, 1.0, -1.0,
700 constraints_per_variable);
702 if (action->rate < 0) {
703 lmm_update_variable_bound(surf_network_model->model_private->maxmin_system, GENERIC_LMM_ACTION(action).variable,
704 (action->lat_current > 0) ?
705 sg_tcp_gamma / (2.0 *
706 action->lat_current) : -1.0);
708 lmm_update_variable_bound(surf_network_model->model_private->maxmin_system, GENERIC_LMM_ACTION(action).variable,
709 (action->lat_current > 0) ?
711 sg_tcp_gamma / (2.0 *
712 action->lat_current))
716 xbt_dynar_foreach(route, i, link) {
717 lmm_expand(surf_network_model->model_private->maxmin_system, link->lmm_resource.constraint,
718 GENERIC_LMM_ACTION(action).variable, 1.0);
721 if (sg_network_crosstraffic == 1) {
722 XBT_DEBUG("Fullduplex active adding backward flow using 5%%");
723 xbt_dynar_foreach(back_route, i, link) {
724 lmm_expand(surf_network_model->model_private->maxmin_system, link->lmm_resource.constraint,
725 GENERIC_LMM_ACTION(action).variable, .05);
729 xbt_dynar_free(&route);
732 return (surf_action_t) action;
735 static xbt_dynar_t net_get_route(void *src, void *dst)
737 xbt_dynar_t route = NULL;
738 routing_get_route_and_latency(src, dst, &route, NULL);
742 static double net_get_link_bandwidth(const void *link)
744 surf_resource_lmm_t lmm = (surf_resource_lmm_t) link;
745 return lmm->power.peak * lmm->power.scale;
748 static double net_get_link_latency(const void *link)
750 return ((link_CM02_t) link)->lat_current;
753 static int net_link_shared(const void *link)
756 lmm_constraint_is_shared(((surf_resource_lmm_t) link)->constraint);
759 static void net_finalize(void)
761 lmm_system_free(surf_network_model->model_private->maxmin_system);
762 surf_network_model->model_private->maxmin_system = NULL;
764 if (surf_network_model->model_private->update_mechanism == UM_LAZY) {
765 xbt_heap_free(surf_network_model->model_private->action_heap);
766 xbt_swag_free(surf_network_model->model_private->modified_set);
769 surf_model_exit(surf_network_model);
770 surf_network_model = NULL;
773 xbt_dynar_free(&smpi_bw_factor);
775 xbt_dynar_free(&smpi_lat_factor);
778 static void smpi_gap_append(double size, const link_CM02_t link,
779 surf_action_network_CM02_t action)
781 const char *src = link->lmm_resource.generic_resource.name;
783 surf_action_network_CM02_t last_action;
786 if (sg_sender_gap > 0.0) {
788 gap_lookup = xbt_dict_new();
790 fifo = (xbt_fifo_t) xbt_dict_get_or_null(gap_lookup, src);
791 action->sender.gap = 0.0;
792 if (fifo && xbt_fifo_size(fifo) > 0) {
793 /* Compute gap from last send */
795 (surf_action_network_CM02_t)
796 xbt_fifo_get_item_content(xbt_fifo_get_last_item(fifo));
797 bw = net_get_link_bandwidth(link);
799 last_action->sender.gap + max(sg_sender_gap,
800 last_action->sender.size / bw);
801 action->latency += action->sender.gap;
803 /* Append action as last send */
804 action->sender.link_name = link->lmm_resource.generic_resource.name;
806 (xbt_fifo_t) xbt_dict_get_or_null(gap_lookup,
807 action->sender.link_name);
809 fifo = xbt_fifo_new();
810 xbt_dict_set(gap_lookup, action->sender.link_name, fifo, NULL);
812 action->sender.fifo_item = xbt_fifo_push(fifo, action);
813 action->sender.size = size;
817 static void smpi_gap_remove(surf_action_network_CM02_t action)
822 if (sg_sender_gap > 0.0 && action->sender.link_name
823 && action->sender.fifo_item) {
825 (xbt_fifo_t) xbt_dict_get_or_null(gap_lookup,
826 action->sender.link_name);
827 xbt_fifo_remove_item(fifo, action->sender.fifo_item);
828 size = xbt_fifo_size(fifo);
831 xbt_dict_remove(gap_lookup, action->sender.link_name);
832 size = xbt_dict_length(gap_lookup);
834 xbt_dict_free(&gap_lookup);
840 static void set_update_mechanism(void)
842 char *optim = xbt_cfg_get_string(_surf_cfg_set, "network/optim");
844 xbt_cfg_get_int(_surf_cfg_set, "network/maxmin_selective_update");
846 if (!strcmp(optim, "Full")) {
847 surf_network_model->model_private->update_mechanism = UM_FULL;
848 surf_network_model->model_private->selective_update = select;
849 } else if (!strcmp(optim, "Lazy")) {
850 surf_network_model->model_private->update_mechanism = UM_LAZY;
851 surf_network_model->model_private->selective_update = 1;
852 xbt_assert((select == 1)
854 (xbt_cfg_is_default_value
855 (_surf_cfg_set, "network/maxmin_selective_update")),
856 "Disabling selective update while using the lazy update mechanism is dumb!");
858 xbt_die("Unsupported optimization (%s) for this model", optim);
862 static void surf_network_model_init_internal(void)
864 s_surf_action_network_CM02_t comm;
865 surf_network_model = surf_model_init();
867 set_update_mechanism();
869 surf_network_model->name = "network";
870 surf_network_model->action_unref = surf_action_unref;
871 surf_network_model->action_cancel = surf_action_cancel;
872 surf_network_model->action_recycle = net_action_recycle;
874 surf_network_model->get_remains = surf_action_get_remains;
876 #ifdef HAVE_LATENCY_BOUND_TRACKING
877 surf_network_model->get_latency_limited = net_get_link_latency_limited;
880 surf_network_model->set_category = surf_action_set_category;
883 surf_network_model->model_private->resource_used = net_resource_used;
884 if (surf_network_model->model_private->update_mechanism == UM_LAZY) {
885 surf_network_model->model_private->share_resources =
886 net_share_resources_lazy;
887 surf_network_model->model_private->update_actions_state =
888 net_update_actions_state_lazy;
889 } else if (surf_network_model->model_private->update_mechanism == UM_FULL) {
890 surf_network_model->model_private->share_resources =
891 net_share_resources_full;
892 surf_network_model->model_private->update_actions_state =
893 net_update_actions_state_full;
896 surf_network_model->model_private->update_resource_state =
897 net_update_resource_state;
898 surf_network_model->model_private->finalize = net_finalize;
900 surf_network_model->suspend = surf_action_suspend;
901 surf_network_model->resume = surf_action_resume;
902 surf_network_model->is_suspended = surf_action_is_suspended;
903 surf_cpu_model->set_max_duration = surf_action_set_max_duration;
905 surf_network_model->extension.network.communicate = net_communicate;
906 surf_network_model->extension.network.get_route = net_get_route;
907 surf_network_model->extension.network.get_link_bandwidth =
908 net_get_link_bandwidth;
909 surf_network_model->extension.network.get_link_latency =
910 net_get_link_latency;
911 surf_network_model->extension.network.link_shared = net_link_shared;
912 surf_network_model->extension.network.add_traces = net_add_traces;
913 surf_network_model->extension.network.create_resource =
916 if (!surf_network_model->model_private->maxmin_system)
917 surf_network_model->model_private->maxmin_system = lmm_system_new(surf_network_model->model_private->selective_update);
919 routing_model_create(net_create_resource("__loopback__",
920 498000000, NULL, 0.000015, NULL,
921 SURF_RESOURCE_ON, NULL,
922 SURF_LINK_FATPIPE, NULL));
924 if (surf_network_model->model_private->update_mechanism == UM_LAZY) {
925 surf_network_model->model_private->action_heap = xbt_heap_new(8, NULL);
926 xbt_heap_set_update_callback(surf_network_model->model_private->action_heap,
927 surf_action_lmm_update_index_heap);
928 surf_network_model->model_private->modified_set =
929 xbt_swag_new(xbt_swag_offset(comm, generic_lmm_action.action_list_hookup));
930 surf_network_model->model_private->maxmin_system->keep_track = surf_network_model->model_private->modified_set;
934 /************************************************************************/
935 /* New model based on LV08 and experimental results of MPI ping-pongs */
936 /************************************************************************/
937 /* @Inproceedings{smpi_ipdps, */
938 /* author={Pierre-Nicolas Clauss and Mark Stillwell and Stéphane Genaud and Frédéric Suter and Henri Casanova and Martin Quinson}, */
939 /* title={Single Node On-Line Simulation of {MPI} Applications with SMPI}, */
940 /* booktitle={25th IEEE International Parallel and Distributed Processing Symposium (IPDPS'11)}, */
941 /* address={Anchorage (Alaska) USA}, */
945 void surf_network_model_init_SMPI(void)
948 if (surf_network_model)
951 surf_network_model_init_internal();
952 latency_factor_callback = &smpi_latency_factor;
953 bandwidth_factor_callback = &smpi_bandwidth_factor;
954 bandwidth_constraint_callback = &smpi_bandwidth_constraint;
955 gap_append = &smpi_gap_append;
956 gap_remove = &smpi_gap_remove;
957 net_define_callbacks();
958 xbt_dynar_push(model_list, &surf_network_model);
959 network_solve = lmm_solve;
961 xbt_cfg_setdefault_double(_surf_cfg_set, "network/sender_gap", 10e-6);
962 xbt_cfg_setdefault_double(_surf_cfg_set, "network/weight_S", 8775);
965 /************************************************************************/
966 /* New model based on optimizations discussed during Pedro Velho's thesis*/
967 /************************************************************************/
968 /* @techreport{VELHO:2011:HAL-00646896:1, */
969 /* url = {http://hal.inria.fr/hal-00646896/en/}, */
970 /* title = {{Flow-level network models: have we reached the limits?}}, */
971 /* author = {Velho, Pedro and Schnorr, Lucas and Casanova, Henri and Legrand, Arnaud}, */
972 /* type = {Rapport de recherche}, */
973 /* institution = {INRIA}, */
974 /* number = {RR-7821}, */
977 /* pdf = {http://hal.inria.fr/hal-00646896/PDF/rr-validity.pdf}, */
979 void surf_network_model_init_LegrandVelho(void)
981 if (surf_network_model)
984 surf_network_model_init_internal();
985 net_define_callbacks();
986 xbt_dynar_push(model_list, &surf_network_model);
987 network_solve = lmm_solve;
989 xbt_cfg_setdefault_double(_surf_cfg_set, "network/latency_factor",
991 xbt_cfg_setdefault_double(_surf_cfg_set, "network/bandwidth_factor",
993 xbt_cfg_setdefault_double(_surf_cfg_set, "network/weight_S", 20537);
996 /***************************************************************************/
997 /* The nice TCP sharing model designed by Loris Marchal and Henri Casanova */
998 /***************************************************************************/
999 /* @TechReport{ rr-lip2002-40, */
1000 /* author = {Henri Casanova and Loris Marchal}, */
1001 /* institution = {LIP}, */
1002 /* title = {A Network Model for Simulation of Grid Application}, */
1003 /* number = {2002-40}, */
1004 /* month = {oct}, */
1007 void surf_network_model_init_CM02(void)
1010 if (surf_network_model)
1013 surf_network_model_init_internal();
1014 net_define_callbacks();
1015 xbt_dynar_push(model_list, &surf_network_model);
1016 network_solve = lmm_solve;
1018 xbt_cfg_setdefault_double(_surf_cfg_set, "network/latency_factor", 1.0);
1019 xbt_cfg_setdefault_double(_surf_cfg_set, "network/bandwidth_factor",
1021 xbt_cfg_setdefault_double(_surf_cfg_set, "network/weight_S", 0.0);
1024 /***************************************************************************/
1025 /* The models from Steven H. Low */
1026 /***************************************************************************/
1027 /* @article{Low03, */
1028 /* author={Steven H. Low}, */
1029 /* title={A Duality Model of {TCP} and Queue Management Algorithms}, */
1031 /* journal={{IEEE/ACM} Transactions on Networking}, */
1032 /* volume={11}, number={4}, */
1034 void surf_network_model_init_Reno(void)
1036 if (surf_network_model)
1039 surf_network_model_init_internal();
1040 net_define_callbacks();
1042 xbt_dynar_push(model_list, &surf_network_model);
1043 lmm_set_default_protocol_function(func_reno_f, func_reno_fp,
1045 network_solve = lagrange_solve;
1047 xbt_cfg_setdefault_double(_surf_cfg_set, "network/latency_factor", 10.4);
1048 xbt_cfg_setdefault_double(_surf_cfg_set, "network/bandwidth_factor",
1050 xbt_cfg_setdefault_double(_surf_cfg_set, "network/weight_S", 8775);
1054 void surf_network_model_init_Reno2(void)
1056 if (surf_network_model)
1059 surf_network_model_init_internal();
1060 net_define_callbacks();
1062 xbt_dynar_push(model_list, &surf_network_model);
1063 lmm_set_default_protocol_function(func_reno2_f, func_reno2_fp,
1065 network_solve = lagrange_solve;
1067 xbt_cfg_setdefault_double(_surf_cfg_set, "network/latency_factor", 10.4);
1068 xbt_cfg_setdefault_double(_surf_cfg_set, "network/bandwidth_factor",
1070 xbt_cfg_setdefault_double(_surf_cfg_set, "network/weight_S_parameter",
1074 void surf_network_model_init_Vegas(void)
1076 if (surf_network_model)
1079 surf_network_model_init_internal();
1080 net_define_callbacks();
1082 xbt_dynar_push(model_list, &surf_network_model);
1083 lmm_set_default_protocol_function(func_vegas_f, func_vegas_fp,
1085 network_solve = lagrange_solve;
1087 xbt_cfg_setdefault_double(_surf_cfg_set, "network/latency_factor", 10.4);
1088 xbt_cfg_setdefault_double(_surf_cfg_set, "network/bandwidth_factor",
1090 xbt_cfg_setdefault_double(_surf_cfg_set, "network/weight_S", 8775);