3 /* Copyright (c) 2004 Arnaud Legrand. All rights reserved. */
5 /* This program is free software; you can redistribute it and/or modify it
6 * under the terms of the license (GNU LGPL) which comes with this package. */
8 #include "network_private.h"
11 #define SG_TCP_CTE_GAMMA 20000.0
13 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(network, surf,
14 "Logging specific to the SURF network module");
16 surf_network_resource_t surf_network_resource = NULL;
18 static xbt_dict_t network_link_set = NULL;
19 xbt_dict_t network_card_set = NULL;
22 network_link_CM02_t **routing_table = NULL;
23 int *routing_table_size = NULL;
24 static network_link_CM02_t loopback = NULL;
26 static void create_routing_table(void)
28 routing_table = xbt_new0(network_link_CM02_t *, card_number * card_number);
29 routing_table_size = xbt_new0(int, card_number * card_number);
32 static void network_link_free(void *nw_link)
34 free(((network_link_CM02_t)nw_link)->name);
38 static network_link_CM02_t network_link_new(char *name,
40 tmgr_trace_t bw_trace,
42 tmgr_trace_t lat_trace,
43 e_surf_network_link_state_t
45 tmgr_trace_t state_trace,
46 e_surf_network_link_sharing_policy_t policy)
48 network_link_CM02_t nw_link = xbt_new0(s_network_link_CM02_t, 1);
51 nw_link->resource = (surf_resource_t) surf_network_resource;
53 nw_link->bw_current = bw_initial;
56 tmgr_history_add_trace(history, bw_trace, 0.0, 0, nw_link);
57 nw_link->lat_current = lat_initial;
60 tmgr_history_add_trace(history, lat_trace, 0.0, 0, nw_link);
61 nw_link->state_current = state_initial;
63 nw_link->state_event =
64 tmgr_history_add_trace(history, state_trace, 0.0, 0, nw_link);
67 lmm_constraint_new(maxmin_system, nw_link, nw_link->bw_current);
69 if(policy == SURF_NETWORK_LINK_FATPIPE)
70 lmm_constraint_shared(nw_link->constraint);
72 xbt_dict_set(network_link_set, name, nw_link, network_link_free);
77 static void network_card_free(void *nw_card)
79 free(((network_card_CM02_t)nw_card)->name);
83 static int network_card_new(const char *card_name)
85 network_card_CM02_t card = xbt_dict_get_or_null(network_card_set, card_name);
88 card = xbt_new0(s_network_card_CM02_t, 1);
89 card->name = xbt_strdup(card_name);
90 card->id = card_number++;
91 xbt_dict_set(network_card_set, card_name, card, network_card_free);
96 static void route_new(int src_id, int dst_id, char **links, int nb_link)
98 network_link_CM02_t *link_list = NULL;
101 ROUTE_SIZE(src_id, dst_id) = nb_link;
102 link_list = (ROUTE(src_id, dst_id) = xbt_new0(network_link_CM02_t, nb_link));
103 for (i = 0; i < nb_link; i++) {
104 link_list[i] = xbt_dict_get_or_null(network_link_set, links[i]);
105 xbt_assert1(link_list[i],"Invalid link name \"%s\"",links[i]);
111 static void parse_network_link(void)
115 tmgr_trace_t bw_trace;
117 tmgr_trace_t lat_trace;
118 e_surf_network_link_state_t state_initial = SURF_NETWORK_LINK_ON;
119 e_surf_network_link_sharing_policy_t policy_initial = SURF_NETWORK_LINK_SHARED;
120 tmgr_trace_t state_trace;
122 name = xbt_strdup(A_network_link_name);
123 surf_parse_get_double(&bw_initial,A_network_link_bandwidth);
124 surf_parse_get_trace(&bw_trace, A_network_link_bandwidth_file);
125 surf_parse_get_double(&lat_initial,A_network_link_latency);
126 surf_parse_get_trace(&lat_trace, A_network_link_latency_file);
128 xbt_assert0((A_network_link_state==A_network_link_state_ON)||
129 (A_network_link_state==A_network_link_state_OFF),
131 if (A_network_link_state==A_network_link_state_ON)
132 state_initial = SURF_NETWORK_LINK_ON;
133 else if (A_network_link_state==A_network_link_state_OFF)
134 state_initial = SURF_NETWORK_LINK_OFF;
136 if (A_network_link_sharing_policy==A_network_link_sharing_policy_SHARED)
137 policy_initial = SURF_NETWORK_LINK_SHARED;
138 else if (A_network_link_sharing_policy==A_network_link_sharing_policy_FATPIPE)
139 policy_initial = SURF_NETWORK_LINK_FATPIPE;
141 surf_parse_get_trace(&state_trace,A_network_link_state_file);
143 network_link_new(name, bw_initial, bw_trace,
144 lat_initial, lat_trace, state_initial, state_trace,
148 static int nb_link = 0;
149 static char **link_name = NULL;
150 static int src_id = -1;
151 static int dst_id = -1;
153 static void parse_route_set_endpoints(void)
155 src_id = network_card_new(A_route_src);
156 dst_id = network_card_new(A_route_dst);
161 static void parse_route_elem(void)
164 link_name = xbt_realloc(link_name, (nb_link) * sizeof(char *));
165 link_name[(nb_link) - 1] = xbt_strdup(A_route_element_name);
168 static void parse_route_set_route(void)
170 route_new(src_id, dst_id, link_name, nb_link);
173 static void parse_file(const char *file)
177 /* Figuring out the network links */
178 surf_parse_reset_parser();
179 ETag_network_link_fun=parse_network_link;
180 surf_parse_open(file);
181 xbt_assert1((!surf_parse()),"Parse error in %s",file);
184 /* Figuring out the network cards used */
185 surf_parse_reset_parser();
186 STag_route_fun=parse_route_set_endpoints;
187 surf_parse_open(file);
188 xbt_assert1((!surf_parse()),"Parse error in %s",file);
191 create_routing_table();
193 /* Building the routes */
194 surf_parse_reset_parser();
195 STag_route_fun=parse_route_set_endpoints;
196 ETag_route_element_fun=parse_route_elem;
197 ETag_route_fun=parse_route_set_route;
198 surf_parse_open(file);
199 xbt_assert1((!surf_parse()),"Parse error in %s",file);
202 /* Adding loopback if needed */
204 for (i = 0; i < card_number; i++)
205 if(!ROUTE_SIZE(i,i)) {
207 loopback = network_link_new(xbt_strdup("__MSG_loopback__"),
208 498.00, NULL, 0.000015, NULL,
209 SURF_NETWORK_LINK_ON, NULL,
210 SURF_NETWORK_LINK_FATPIPE);
212 ROUTE(i,i) = xbt_new0(network_link_CM02_t, 1);
213 ROUTE(i,i)[0] = loopback;
217 static void *name_service(const char *name)
219 network_card_CM02_t card = xbt_dict_get_or_null(network_card_set, name);
223 static const char *get_resource_name(void *resource_id)
225 return ((network_card_CM02_t) resource_id)->name;
228 static int resource_used(void *resource_id)
230 return lmm_constraint_used(maxmin_system,
231 ((network_link_CM02_t) resource_id)->constraint);
234 static int action_free(surf_action_t action)
238 xbt_swag_remove(action, action->state_set);
239 if(((surf_action_network_CM02_t)action)->variable)
240 lmm_variable_free(maxmin_system, ((surf_action_network_CM02_t)action)->variable);
247 static void action_use(surf_action_t action)
252 static void action_cancel(surf_action_t action)
257 static void action_recycle(surf_action_t action)
262 static void action_change_state(surf_action_t action,
263 e_surf_action_state_t state)
265 /* if((state==SURF_ACTION_DONE) || (state==SURF_ACTION_FAILED)) */
266 /* if(((surf_action_network_CM02_t)action)->variable) { */
267 /* lmm_variable_disable(maxmin_system, ((surf_action_network_CM02_t)action)->variable); */
268 /* ((surf_action_network_CM02_t)action)->variable = NULL; */
271 surf_action_change_state(action, state);
275 static double share_resources(double now)
277 s_surf_action_network_CM02_t s_action;
278 surf_action_network_CM02_t action = NULL;
279 xbt_swag_t running_actions = surf_network_resource->common_public->states.running_action_set;
280 double min = generic_maxmin_share_resources(running_actions,
281 xbt_swag_offset(s_action, variable));
283 xbt_swag_foreach(action, running_actions) {
284 if(action->latency>0) {
285 if(min<0) min = action->latency;
286 else if (action->latency<min) min = action->latency;
293 static void update_actions_state(double now, double delta)
296 surf_action_network_CM02_t action = NULL;
297 surf_action_network_CM02_t next_action = NULL;
298 xbt_swag_t running_actions =
299 surf_network_resource->common_public->states.running_action_set;
301 xbt_swag_t failed_actions =
302 surf_network_resource->common_public->states.failed_action_set;
305 xbt_swag_foreach_safe(action, next_action, running_actions) {
307 if (action->latency > 0) {
308 if (action->latency > deltap) {
309 surf_double_update(&(action->latency),deltap);
312 surf_double_update(&(deltap), action->latency);
313 action->latency = 0.0;
315 if ((action->latency == 0.0) && !(action->suspended))
316 lmm_update_variable_weight(maxmin_system, action->variable, 1.0);
318 surf_double_update(&(action->generic_action.remains),
319 lmm_variable_getvalue(action->variable) * deltap);
320 if (action->generic_action.max_duration != NO_MAX_DURATION)
321 surf_double_update(&(action->generic_action.max_duration), delta);
323 /* if(action->generic_action.remains<.00001) action->generic_action.remains=0; */
325 if (action->generic_action.remains <= 0) {
326 action->generic_action.finish = surf_get_clock();
327 action_change_state((surf_action_t) action, SURF_ACTION_DONE);
328 } else if ((action->generic_action.max_duration != NO_MAX_DURATION) &&
329 (action->generic_action.max_duration <= 0)) {
330 action->generic_action.finish = surf_get_clock();
331 action_change_state((surf_action_t) action, SURF_ACTION_DONE);
332 } else { /* Need to check that none of the resource has failed */
333 lmm_constraint_t cnst = NULL;
335 network_link_CM02_t nw_link = NULL;
338 lmm_get_cnst_from_var(maxmin_system, action->variable,
340 nw_link = lmm_constraint_id(cnst);
341 if (nw_link->state_current == SURF_NETWORK_LINK_OFF) {
342 action->generic_action.finish = surf_get_clock();
343 action_change_state((surf_action_t) action, SURF_ACTION_FAILED);
353 static void update_resource_state(void *id,
354 tmgr_trace_event_t event_type,
357 network_link_CM02_t nw_link = id;
358 /* printf("[" "%lg" "] Asking to update network card \"%s\" with value " */
359 /* "%lg" " for event %p\n", surf_get_clock(), nw_link->name, */
360 /* value, event_type); */
362 if (event_type == nw_link->bw_event) {
363 nw_link->bw_current = value;
364 lmm_update_constraint_bound(maxmin_system, nw_link->constraint,
365 nw_link->bw_current);
366 } else if (event_type == nw_link->lat_event) {
367 double delta = value - nw_link->lat_current;
368 lmm_variable_t var = NULL;
369 surf_action_network_CM02_t action = NULL;
371 nw_link->lat_current = value;
372 while (lmm_get_var_from_cnst(maxmin_system, nw_link->constraint, &var)) {
373 action = lmm_variable_id(var);
374 action->lat_current += delta;
376 lmm_update_variable_bound(maxmin_system, action->variable,
377 SG_TCP_CTE_GAMMA / action->lat_current);
379 lmm_update_variable_bound(maxmin_system, action->variable,
380 min(action->rate,SG_TCP_CTE_GAMMA / action->lat_current));
382 } else if (event_type == nw_link->state_event) {
384 nw_link->state_current = SURF_NETWORK_LINK_ON;
386 nw_link->state_current = SURF_NETWORK_LINK_OFF;
388 CRITICAL0("Unknown event ! \n");
395 static surf_action_t communicate(void *src, void *dst, double size, double rate)
397 surf_action_network_CM02_t action = NULL;
398 network_card_CM02_t card_src = src;
399 network_card_CM02_t card_dst = dst;
400 int route_size = ROUTE_SIZE(card_src->id, card_dst->id);
401 network_link_CM02_t *route = ROUTE(card_src->id, card_dst->id);
404 xbt_assert2(route_size,"You're trying to send data from %s to %s but there is no connexion between these two cards.", card_src->name, card_dst->name);
406 action = xbt_new0(s_surf_action_network_CM02_t, 1);
408 action->generic_action.using = 1;
409 action->generic_action.cost = size;
410 action->generic_action.remains = size;
411 action->generic_action.max_duration = NO_MAX_DURATION;
412 action->generic_action.start = -1.0;
413 action->generic_action.finish = -1.0;
414 action->generic_action.resource_type =
415 (surf_resource_t) surf_network_resource;
416 action->suspended = 0; /* Should be useless because of the
417 calloc but it seems to help valgrind... */
418 action->generic_action.state_set =
419 surf_network_resource->common_public->states.running_action_set;
421 xbt_swag_insert(action, action->generic_action.state_set);
424 action->latency = 0.0;
425 for (i = 0; i < route_size; i++)
426 action->latency += route[i]->lat_current;
427 action->lat_current = action->latency;
429 if(action->latency>0)
430 action->variable = lmm_variable_new(maxmin_system, action, 0.0, -1.0,
433 action->variable = lmm_variable_new(maxmin_system, action, 1.0, -1.0,
437 if(action->lat_current>0)
438 lmm_update_variable_bound(maxmin_system, action->variable,
439 SG_TCP_CTE_GAMMA / action->lat_current);
441 lmm_update_variable_bound(maxmin_system, action->variable, -1.0);
443 if(action->lat_current>0)
444 lmm_update_variable_bound(maxmin_system, action->variable,
445 min(action->rate,SG_TCP_CTE_GAMMA / action->lat_current));
447 lmm_update_variable_bound(maxmin_system, action->variable, action->rate);
450 for (i = 0; i < route_size; i++)
451 lmm_expand(maxmin_system, route[i]->constraint, action->variable, 1.0);
453 return (surf_action_t) action;
456 static void action_suspend(surf_action_t action)
458 ((surf_action_network_CM02_t) action)->suspended = 1;
459 lmm_update_variable_weight(maxmin_system,
460 ((surf_action_network_CM02_t) action)->variable, 0.0);
463 static void action_resume(surf_action_t action)
465 lmm_update_variable_weight(maxmin_system,
466 ((surf_action_network_CM02_t) action)->variable, 1.0);
467 ((surf_action_network_CM02_t) action)->suspended = 0;
470 static int action_is_suspended(surf_action_t action)
472 return ((surf_action_network_CM02_t) action)->suspended;
475 static void action_set_max_duration(surf_action_t action, double duration)
477 action->max_duration = duration;
480 static void finalize(void)
484 xbt_dict_free(&network_card_set);
485 xbt_dict_free(&network_link_set);
486 xbt_swag_free(surf_network_resource->common_public->states.
488 xbt_swag_free(surf_network_resource->common_public->states.
490 xbt_swag_free(surf_network_resource->common_public->states.
492 xbt_swag_free(surf_network_resource->common_public->states.
494 free(surf_network_resource->common_public);
495 free(surf_network_resource->common_private);
496 free(surf_network_resource->extension_public);
498 free(surf_network_resource);
499 surf_network_resource = NULL;
502 for (i = 0; i < card_number; i++)
503 for (j = 0; j < card_number; j++)
506 routing_table = NULL;
507 free(routing_table_size);
508 routing_table_size = NULL;
512 static void surf_network_resource_init_internal(void)
514 s_surf_action_t action;
516 surf_network_resource = xbt_new0(s_surf_network_resource_t, 1);
518 surf_network_resource->common_private =
519 xbt_new0(s_surf_resource_private_t, 1);
520 surf_network_resource->common_public =
521 xbt_new0(s_surf_resource_public_t, 1);
522 surf_network_resource->extension_public =
523 xbt_new0(s_surf_network_resource_extension_public_t, 1);
525 surf_network_resource->common_public->states.ready_action_set =
526 xbt_swag_new(xbt_swag_offset(action, state_hookup));
527 surf_network_resource->common_public->states.running_action_set =
528 xbt_swag_new(xbt_swag_offset(action, state_hookup));
529 surf_network_resource->common_public->states.failed_action_set =
530 xbt_swag_new(xbt_swag_offset(action, state_hookup));
531 surf_network_resource->common_public->states.done_action_set =
532 xbt_swag_new(xbt_swag_offset(action, state_hookup));
534 surf_network_resource->common_public->name_service = name_service;
535 surf_network_resource->common_public->get_resource_name =
537 surf_network_resource->common_public->action_get_state =
538 surf_action_get_state;
539 surf_network_resource->common_public->action_free = action_free;
540 surf_network_resource->common_public->action_use = action_use;
541 surf_network_resource->common_public->action_cancel = action_cancel;
542 surf_network_resource->common_public->action_recycle = action_recycle;
543 surf_network_resource->common_public->action_change_state =
545 surf_network_resource->common_public->action_set_data = surf_action_set_data;
546 surf_network_resource->common_public->name = "network";
548 surf_network_resource->common_private->resource_used = resource_used;
549 surf_network_resource->common_private->share_resources = share_resources;
550 surf_network_resource->common_private->update_actions_state =
551 update_actions_state;
552 surf_network_resource->common_private->update_resource_state =
553 update_resource_state;
554 surf_network_resource->common_private->finalize = finalize;
556 surf_network_resource->common_public->suspend = action_suspend;
557 surf_network_resource->common_public->resume = action_resume;
558 surf_network_resource->common_public->is_suspended = action_is_suspended;
559 surf_cpu_resource->common_public->set_max_duration = action_set_max_duration;
561 surf_network_resource->extension_public->communicate = communicate;
563 network_link_set = xbt_dict_new();
564 network_card_set = xbt_dict_new();
566 xbt_assert0(maxmin_system, "surf_init has to be called first!");
569 /***************************************************************************/
570 /* The nice TCP sharing model designed by Loris Marchal and Henri Casanova */
571 /***************************************************************************/
572 /* @TechReport{ rr-lip2002-40, */
573 /* author = {Henri Casanova and Loris Marchal}, */
574 /* institution = {LIP}, */
575 /* title = {A Network Model for Simulation of Grid Application}, */
576 /* number = {2002-40}, */
580 void surf_network_resource_init_CM02(const char *filename)
582 if (surf_network_resource)
584 surf_network_resource_init_internal();
585 parse_file(filename);
586 xbt_dynar_push(resource_list, &surf_network_resource);