src/surf/network.c

   1 /* Copyright (c) 2004, 2005, 2006, 2007, 2008, 2009, 2010. The SimGrid Team.
   2  * All rights reserved.                                                     */
   3
   4 /* This program is free software; you can redistribute it and/or modify it
   5  * under the terms of the license (GNU LGPL) which comes with this package. */
   6
   7 #include "network_private.h"
   8 #include "xbt/log.h"
   9 #include "xbt/str.h"
  10
  11 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(surf_network, surf,
  12                                 "Logging specific to the SURF network module");
  13
  14 surf_model_t surf_network_model = NULL;
  15 static lmm_system_t network_maxmin_system = NULL;
  16 static void (*network_solve) (lmm_system_t) = NULL;
  17
  18 double sg_latency_factor = 1.0;    /* default value; can be set by model or from command line */
  19 double sg_bandwidth_factor = 1.0;  /* default value; can be set by model or from command line */
  20 double sg_weight_S_parameter = 0.0;/* default value; can be set by model or from command line */
  21
  22 double sg_tcp_gamma = 0.0;
  23 int sg_network_fullduplex = 0;
  24
  25
  26 /******************************************************************************/
  27 /*                           Factors callbacks                                */
  28 /******************************************************************************/
  29 static double constant_latency_factor(double size)
  30 {
  31   return sg_latency_factor;
  32 }
  33
  34 static double constant_bandwidth_factor(double size)
  35 {
  36   return sg_bandwidth_factor;
  37 }
  38
  39 static double constant_bandwidth_constraint(double rate, double bound, double size)
  40 {
  41   return rate;
  42 }
  43
  44 /**********************/
  45 /*   SMPI callbacks   */
  46 /**********************/
  47 static double smpi_latency_factor(double size)
  48 {
  49   /* 1 B <= size <= 1 KiB */
  50   if (size <= 1024.0) {
  51     return 1.0056;
  52   }
  53
  54   /* 2 KiB <= size <= 32 KiB */
  55   if (size <= 32768.0) {
  56     return 1.8805;
  57   }
  58
  59   /* 64 KiB <= size <= 4 MiB */
  60   return 22.7111;
  61 }
  62
  63 static double smpi_bandwidth_factor(double size)
  64 {
  65   /* 1 B <= size <= 1 KiB */
  66   if (size <= 1024.0) {
  67     return 0.2758;
  68   }
  69
  70   /* 2 KiB <= size <= 32 KiB */
  71   if (size <= 32768.0) {
  72     return 0.5477;
  73   }
  74
  75   /* 64 KiB <= size <= 4 MiB */
  76   return 0.9359;
  77 }
  78
  79 static double smpi_bandwidth_constraint(double rate, double bound, double size)
  80 {
  81   return rate < 0 ? bound : min(bound, rate * smpi_bandwidth_factor(size));
  82 }
  83
  84
  85 static double (*latency_factor_callback)(double) = &constant_latency_factor;
  86 static double (*bandwidth_factor_callback)(double) = &constant_bandwidth_factor;
  87 static double (*bandwidth_constraint_callback)(double, double, double) = &constant_bandwidth_constraint;
  88
  89
  90 static link_CM02_t net_link_new(char *name,
  91                             double bw_initial,
  92                             tmgr_trace_t bw_trace,
  93                             double lat_initial,
  94                             tmgr_trace_t lat_trace,
  95                             e_surf_resource_state_t
  96                             state_initial,
  97                             tmgr_trace_t state_trace,
  98                             e_surf_link_sharing_policy_t
  99                             policy, xbt_dict_t properties)
 100 {
 101   link_CM02_t nw_link = (link_CM02_t)
 102     surf_resource_lmm_new(sizeof(s_link_CM02_t),
 103                           surf_network_model, name, properties,
 104                           network_maxmin_system,
 105                           sg_bandwidth_factor * bw_initial,
 106                           history,
 107                           state_initial, state_trace,
 108                           bw_initial, bw_trace);
 109
 110   xbt_assert1(!xbt_dict_get_or_null(surf_network_model->resource_set, name),
 111               "Link '%s' declared several times in the platform file.", name);
 112
 113   nw_link->lat_current = lat_initial;
 114   if (lat_trace)
 115     nw_link->lat_event =
 116       tmgr_history_add_trace(history, lat_trace, 0.0, 0, nw_link);
 117
 118   if (policy == SURF_LINK_FATPIPE)
 119     lmm_constraint_shared(nw_link->lmm_resource.constraint);
 120
 121   xbt_dict_set(surf_network_model->resource_set, name, nw_link,
 122                surf_resource_free);
 123 #ifdef HAVE_TRACING
 124   TRACE_surf_link_declaration (name, bw_initial, lat_initial);
 125 #endif
 126
 127   return nw_link;
 128 }
 129
 130 static void net_parse_link_init(void)
 131 {
 132   char *name_link;
 133   double bw_initial;
 134   tmgr_trace_t bw_trace;
 135   double lat_initial;
 136   tmgr_trace_t lat_trace;
 137   e_surf_resource_state_t state_initial_link = SURF_RESOURCE_ON;
 138   e_surf_link_sharing_policy_t policy_initial_link = SURF_LINK_SHARED;
 139   tmgr_trace_t state_trace;
 140
 141   name_link = xbt_strdup(A_surfxml_link_id);
 142   surf_parse_get_double(&bw_initial, A_surfxml_link_bandwidth);
 143   bw_trace = tmgr_trace_new(A_surfxml_link_bandwidth_file);
 144   surf_parse_get_double(&lat_initial, A_surfxml_link_latency);
 145   lat_trace = tmgr_trace_new(A_surfxml_link_latency_file);
 146
 147   xbt_assert0((A_surfxml_link_state == A_surfxml_link_state_ON)
 148               || (A_surfxml_link_state ==
 149                   A_surfxml_link_state_OFF), "Invalid state");
 150   if (A_surfxml_link_state == A_surfxml_link_state_ON)
 151     state_initial_link = SURF_RESOURCE_ON;
 152   else if (A_surfxml_link_state == A_surfxml_link_state_OFF)
 153     state_initial_link = SURF_RESOURCE_OFF;
 154
 155   if (A_surfxml_link_sharing_policy == A_surfxml_link_sharing_policy_SHARED)
 156     policy_initial_link = SURF_LINK_SHARED;
 157   else if (A_surfxml_link_sharing_policy ==
 158            A_surfxml_link_sharing_policy_FATPIPE)
 159     policy_initial_link = SURF_LINK_FATPIPE;
 160
 161   state_trace = tmgr_trace_new(A_surfxml_link_state_file);
 162
 163   net_link_new(name_link, bw_initial, bw_trace,
 164            lat_initial, lat_trace, state_initial_link, state_trace,
 165            policy_initial_link, xbt_dict_new());
 166
 167 }
 168
 169 static void net_create_resource(char *name,
 170         double bw_initial,
 171         tmgr_trace_t bw_trace,
 172         double lat_initial,
 173         tmgr_trace_t lat_trace,
 174         e_surf_resource_state_t
 175         state_initial,
 176         tmgr_trace_t state_trace,
 177         e_surf_link_sharing_policy_t policy,
 178         xbt_dict_t properties)
 179 {
 180         net_link_new(name, bw_initial, bw_trace,
 181                    lat_initial, lat_trace, state_initial, state_trace,
 182                    policy, xbt_dict_new());
 183 }
 184 static void net_add_traces(void)
 185 {
 186   xbt_dict_cursor_t cursor = NULL;
 187   char *trace_name, *elm;
 188
 189   static int called = 0;
 190   if (called)
 191     return;
 192   called = 1;
 193
 194   /* connect all traces relative to network */
 195   xbt_dict_foreach(trace_connect_list_link_avail, cursor, trace_name, elm) {
 196     tmgr_trace_t trace = xbt_dict_get_or_null(traces_set_list, trace_name);
 197     link_CM02_t link =
 198       xbt_dict_get_or_null(surf_network_model->resource_set, elm);
 199
 200     xbt_assert2(link, "Cannot connect trace %s to link %s: link undefined",
 201                 trace_name, elm);
 202     xbt_assert2(trace, "Cannot connect trace %s to link %s: trace undefined",
 203                 trace_name, elm);
 204
 205     link->lmm_resource.state_event =
 206       tmgr_history_add_trace(history, trace, 0.0, 0, link);
 207   }
 208
 209   xbt_dict_foreach(trace_connect_list_bandwidth, cursor, trace_name, elm) {
 210     tmgr_trace_t trace = xbt_dict_get_or_null(traces_set_list, trace_name);
 211     link_CM02_t link =
 212       xbt_dict_get_or_null(surf_network_model->resource_set, elm);
 213
 214     xbt_assert2(link, "Cannot connect trace %s to link %s: link undefined",
 215                 trace_name, elm);
 216     xbt_assert2(trace, "Cannot connect trace %s to link %s: trace undefined",
 217                 trace_name, elm);
 218
 219     link->lmm_resource.power.event =
 220       tmgr_history_add_trace(history, trace, 0.0, 0, link);
 221   }
 222
 223   xbt_dict_foreach(trace_connect_list_latency, cursor, trace_name, elm) {
 224     tmgr_trace_t trace = xbt_dict_get_or_null(traces_set_list, trace_name);
 225     link_CM02_t link =
 226       xbt_dict_get_or_null(surf_network_model->resource_set, elm);
 227
 228     xbt_assert2(link, "Cannot connect trace %s to link %s: link undefined",
 229                 trace_name, elm);
 230     xbt_assert2(trace, "Cannot connect trace %s to link %s: trace undefined",
 231                 trace_name, elm);
 232
 233     link->lat_event = tmgr_history_add_trace(history, trace, 0.0, 0, link);
 234   }
 235 }
 236
 237 static void net_define_callbacks(const char *file)
 238 {
 239   /* Figuring out the network links */
 240   surfxml_add_callback(STag_surfxml_link_cb_list, &net_parse_link_init);
 241   surfxml_add_callback(ETag_surfxml_platform_cb_list, &net_add_traces);
 242 }
 243
 244 static int net_resource_used(void *resource_id)
 245 {
 246   return lmm_constraint_used(network_maxmin_system,
 247                              ((surf_resource_lmm_t) resource_id)->constraint);
 248 }
 249
 250 static int net_action_unref(surf_action_t action)
 251 {
 252   action->refcount--;
 253   if (!action->refcount) {
 254     xbt_swag_remove(action, action->state_set);
 255     if (((surf_action_network_CM02_t) action)->variable)
 256       lmm_variable_free(network_maxmin_system,
 257                         ((surf_action_network_CM02_t) action)->variable);
 258     free(action);
 259     return 1;
 260   }
 261   return 0;
 262 }
 263
 264 static void net_action_cancel(surf_action_t action)
 265 {
 266   surf_network_model->action_state_set(action, SURF_ACTION_FAILED);
 267 }
 268
 269 void net_action_recycle(surf_action_t action)
 270 {
 271   return;
 272 }
 273
 274 int net_get_link_latency(surf_action_t action)
 275 {
 276   return action->latency_limited;
 277 }
 278
 279 double net_action_get_remains(surf_action_t action)
 280 {
 281   return action->remains;
 282 }
 283
 284 static double net_share_resources(double now)
 285 {
 286   s_surf_action_network_CM02_t s_action;
 287   surf_action_network_CM02_t action = NULL;
 288   xbt_swag_t running_actions = surf_network_model->states.running_action_set;
 289   double min;
 290
 291   min = generic_maxmin_share_resources(running_actions,
 292                                        xbt_swag_offset(s_action,
 293                                                        variable),
 294                                        network_maxmin_system, network_solve);
 295
 296 #define VARIABLE(action) (*((lmm_variable_t*)(((char *) (action)) + xbt_swag_offset(s_action, variable)  )))
 297
 298   xbt_swag_foreach(action, running_actions) {
 299         if( lmm_is_variable_limited_by_latency(action->variable) ){
 300                 (action->generic_action).latency_limited = 1;
 301         }else{
 302                 (action->generic_action).latency_limited = 0;
 303         }
 304     if (action->latency > 0) {
 305       if (min < 0)
 306         min = action->latency;
 307       else if (action->latency < min)
 308         min = action->latency;
 309     }
 310   }
 311
 312   return min;
 313 }
 314
 315 static void net_update_actions_state(double now, double delta)
 316 {
 317   double deltap = 0.0;
 318   surf_action_network_CM02_t action = NULL;
 319   surf_action_network_CM02_t next_action = NULL;
 320   xbt_swag_t running_actions = surf_network_model->states.running_action_set;
 321   /*
 322      xbt_swag_t failed_actions =
 323      surf_network_model->states.failed_action_set;
 324    */
 325
 326   xbt_swag_foreach_safe(action, next_action, running_actions) {
 327 #ifdef HAVE_TRACING
 328 // COMMENTED BY DAVID
 329 //     xbt_dynar_t route = used_routing->get_route(action->src, action->dst);
 330 //
 331 //     link_CM02_t link;
 332 //     unsigned int i;
 333 //     xbt_dynar_foreach(route, i, link) {
 334 //      TRACE_surf_link_set_utilization (link->lmm_resource.generic_resource.name,
 335 //           action->generic_action.data, lmm_variable_getvalue(action->variable), now-delta, delta);
 336 //     }
 337 #endif
 338     deltap = delta;
 339     if (action->latency > 0) {
 340       if (action->latency > deltap) {
 341         double_update(&(action->latency), deltap);
 342         deltap = 0.0;
 343       } else {
 344         double_update(&(deltap), action->latency);
 345         action->latency = 0.0;
 346       }
 347       if ((action->latency == 0.0) && !(action->suspended))
 348         lmm_update_variable_weight(network_maxmin_system, action->variable,
 349                                    action->weight);
 350     }
 351 #ifdef HAVE_TRACING
 352     xbt_dynar_t route = used_routing->get_route(action->src, action->dst);
 353     link_CM02_t link;
 354     unsigned int i;
 355     xbt_dynar_foreach(route, i, link) {
 356       TRACE_surf_link_set_utilization (link->lmm_resource.generic_resource.name,
 357           action->generic_action.data, lmm_variable_getvalue(action->variable), now-delta, delta);
 358     }
 359 #endif
 360     double_update(&(action->generic_action.remains),
 361                   lmm_variable_getvalue(action->variable) * deltap);
 362     if (action->generic_action.max_duration != NO_MAX_DURATION)
 363       double_update(&(action->generic_action.max_duration), delta);
 364
 365     if ((action->generic_action.remains <= 0) &&
 366         (lmm_get_variable_weight(action->variable) > 0)) {
 367       action->generic_action.finish = surf_get_clock();
 368       surf_network_model->action_state_set((surf_action_t) action,
 369                                            SURF_ACTION_DONE);
 370     } else if ((action->generic_action.max_duration != NO_MAX_DURATION)
 371                && (action->generic_action.max_duration <= 0)) {
 372       action->generic_action.finish = surf_get_clock();
 373       surf_network_model->action_state_set((surf_action_t) action,
 374                                            SURF_ACTION_DONE);
 375     }
 376   }
 377
 378   return;
 379 }
 380
 381 static void net_update_resource_state(void *id,
 382                                   tmgr_trace_event_t event_type,
 383                                   double value, double date)
 384 {
 385   link_CM02_t nw_link = id;
 386   /*   printf("[" "%lg" "] Asking to update network card \"%s\" with value " */
 387   /*     "%lg" " for event %p\n", surf_get_clock(), nw_link->name, */
 388   /*     value, event_type); */
 389
 390   if (event_type == nw_link->lmm_resource.power.event) {
 391     double delta =
 392       sg_weight_S_parameter / value - sg_weight_S_parameter /
 393       (nw_link->lmm_resource.power.peak * nw_link->lmm_resource.power.scale);
 394     lmm_variable_t var = NULL;
 395     lmm_element_t elem = NULL;
 396     surf_action_network_CM02_t action = NULL;
 397
 398     nw_link->lmm_resource.power.peak = value;
 399     lmm_update_constraint_bound(network_maxmin_system,
 400                                 nw_link->lmm_resource.constraint,
 401                                 sg_bandwidth_factor *
 402                                 (nw_link->lmm_resource.power.peak *
 403                                  nw_link->lmm_resource.power.scale));
 404 #ifdef HAVE_TRACING
 405     TRACE_surf_link_set_bandwidth (date, nw_link->lmm_resource.generic_resource.name, sg_bandwidth_factor * (nw_link->lmm_resource.power.peak * nw_link->lmm_resource.power.scale));
 406 #endif
 407     if (sg_weight_S_parameter > 0) {
 408       while ((var = lmm_get_var_from_cnst
 409               (network_maxmin_system, nw_link->lmm_resource.constraint,
 410                &elem))) {
 411         action = lmm_variable_id(var);
 412         action->weight += delta;
 413         if (!(action->suspended))
 414           lmm_update_variable_weight(network_maxmin_system, action->variable,
 415                                      action->weight);
 416       }
 417     }
 418     if (tmgr_trace_event_free(event_type))
 419       nw_link->lmm_resource.power.event = NULL;
 420   } else if (event_type == nw_link->lat_event) {
 421     double delta = value - nw_link->lat_current;
 422     lmm_variable_t var = NULL;
 423     lmm_element_t elem = NULL;
 424     surf_action_network_CM02_t action = NULL;
 425
 426     nw_link->lat_current = value;
 427     while ((var = lmm_get_var_from_cnst
 428             (network_maxmin_system, nw_link->lmm_resource.constraint,
 429              &elem))) {
 430       action = lmm_variable_id(var);
 431       action->lat_current += delta;
 432       action->weight += delta;
 433       if (action->rate < 0)
 434         lmm_update_variable_bound(network_maxmin_system, action->variable,
 435                                   sg_tcp_gamma / (2.0 * action->lat_current));
 436       else{
 437         lmm_update_variable_bound(network_maxmin_system, action->variable,
 438                                   min(action->rate,
 439                                       sg_tcp_gamma / (2.0 *
 440                                                       action->lat_current)));
 441
 442         if(action->rate < sg_tcp_gamma / (2.0 * action->lat_current) ){
 443                 INFO0("Flow is limited BYBANDWIDTH");
 444         }else{
 445                 INFO1("Flow is limited BYLATENCY, latency of flow is %f",action->lat_current);
 446         }
 447       }
 448       if (!(action->suspended))
 449         lmm_update_variable_weight(network_maxmin_system, action->variable,
 450                                    action->weight);
 451
 452     }
 453     if (tmgr_trace_event_free(event_type))
 454       nw_link->lat_event = NULL;
 455   } else if (event_type == nw_link->lmm_resource.state_event) {
 456     if (value > 0)
 457       nw_link->lmm_resource.state_current = SURF_RESOURCE_ON;
 458     else {
 459       lmm_constraint_t cnst = nw_link->lmm_resource.constraint;
 460       lmm_variable_t var = NULL;
 461       lmm_element_t elem = NULL;
 462
 463       nw_link->lmm_resource.state_current = SURF_RESOURCE_OFF;
 464       while ((var = lmm_get_var_from_cnst
 465               (network_maxmin_system, cnst, &elem))) {
 466         surf_action_t action = lmm_variable_id(var);
 467
 468         if (surf_action_state_get(action) == SURF_ACTION_RUNNING ||
 469             surf_action_state_get(action) == SURF_ACTION_READY) {
 470           action->finish = date;
 471           surf_network_model->action_state_set(action, SURF_ACTION_FAILED);
 472         }
 473       }
 474     }
 475     if (tmgr_trace_event_free(event_type))
 476       nw_link->lmm_resource.state_event = NULL;
 477   } else {
 478     CRITICAL0("Unknown event ! \n");
 479     xbt_abort();
 480   }
 481
 482   return;
 483 }
 484
 485
 486 static surf_action_t net_communicate(const char *src_name, const char *dst_name,
 487                                  int src, int dst, double size, double rate)
 488 {
 489   unsigned int i;
 490   link_CM02_t link;
 491   int failed = 0;
 492   surf_action_network_CM02_t action = NULL;
 493   double bandwidth_bound;
 494   /* LARGE PLATFORMS HACK:
 495      Add a link_CM02_t *link and a int link_nb to network_card_CM02_t. It will represent local links for this node
 496      Use the cluster_id for ->id */
 497
 498   //xbt_dynar_t route = used_routing->get_route(src, dst);  // COMMENTED BY DAVID
 499   xbt_dynar_t route = global_routing->get_route(src_name, dst_name);
 500   xbt_dynar_t back_route = NULL;
 501   int constraints_per_variable = 0;
 502
 503   if( sg_network_fullduplex == 1){
 504           //back_route = used_routing->get_route(dst, src);  // COMMENTED BY DAVID
 505           back_route = global_routing->get_route(src_name, dst_name);
 506   }
 507
 508   /* LARGE PLATFORMS HACK:
 509      total_route_size = route_size + src->link_nb + dst->nb */
 510
 511   XBT_IN4("(%s,%s,%g,%g)", src_name, dst_name, size, rate);
 512   /* LARGE PLATFORMS HACK:
 513      assert on total_route_size */
 514   xbt_assert2(xbt_dynar_length(route),
 515               "You're trying to send data from %s to %s but there is no connection between these two hosts.",
 516               src_name, dst_name);
 517
 518   xbt_dynar_foreach(route, i, link) {
 519     if (link->lmm_resource.state_current == SURF_RESOURCE_OFF) {
 520       failed = 1;
 521       break;
 522     }
 523   }
 524   action =
 525     surf_action_new(sizeof(s_surf_action_network_CM02_t), size,
 526                     surf_network_model, failed);
 527   (action->generic_action).latency_limited = 0;
 528
 529   xbt_swag_insert(action, action->generic_action.state_set);
 530   action->rate = rate;
 531
 532   action->latency = 0.0;
 533   action->weight = 0.0;
 534   bandwidth_bound = -1.0;
 535   xbt_dynar_foreach(route, i, link) {
 536     action->latency += link->lat_current;
 537     action->weight +=
 538       link->lat_current +
 539       sg_weight_S_parameter /
 540       (link->lmm_resource.power.peak * link->lmm_resource.power.scale);
 541     if(bandwidth_bound < 0.0)
 542       bandwidth_bound = (*bandwidth_factor_callback)(size) * (link->lmm_resource.power.peak * link->lmm_resource.power.scale);
 543     else
 544       bandwidth_bound = min(bandwidth_bound, (*bandwidth_factor_callback)(size) * (link->lmm_resource.power.peak * link->lmm_resource.power.scale));
 545   }
 546   /* LARGE PLATFORMS HACK:
 547      Add src->link and dst->link latencies */
 548   action->lat_current = action->latency;
 549   action->latency *= (*latency_factor_callback)(size);
 550   action->rate = (*bandwidth_constraint_callback)(action->rate, bandwidth_bound, size);
 551
 552   /* LARGE PLATFORMS HACK:
 553      lmm_variable_new(..., total_route_size) */
 554   if(back_route != NULL){
 555           constraints_per_variable = xbt_dynar_length(route)+xbt_dynar_length(back_route);
 556   }else{
 557           constraints_per_variable = xbt_dynar_length(route);
 558   }
 559
 560   if (action->latency > 0)
 561     action->variable =
 562       lmm_variable_new(network_maxmin_system, action, 0.0, -1.0,constraints_per_variable);
 563   else
 564     action->variable =
 565       lmm_variable_new(network_maxmin_system, action, 1.0, -1.0,constraints_per_variable);
 566
 567   if (action->rate < 0) {
 568     if (action->lat_current > 0)
 569       lmm_update_variable_bound(network_maxmin_system, action->variable,
 570                                 sg_tcp_gamma / (2.0 * action->lat_current));
 571     else
 572       lmm_update_variable_bound(network_maxmin_system, action->variable,
 573                                 -1.0);
 574   } else {
 575     if (action->lat_current > 0)
 576       lmm_update_variable_bound(network_maxmin_system, action->variable,
 577                                 min(action->rate,
 578                                     sg_tcp_gamma / (2.0 *
 579                                                     action->lat_current)));
 580     else
 581       lmm_update_variable_bound(network_maxmin_system, action->variable,
 582                                 action->rate);
 583   }
 584
 585   xbt_dynar_foreach(route, i, link) {
 586     lmm_expand(network_maxmin_system, link->lmm_resource.constraint,
 587                action->variable, 1.0);
 588   }
 589
 590   if( sg_network_fullduplex == 1){
 591           DEBUG1("Fullduplex active adding backward flow using 5%c", '%');
 592           xbt_dynar_foreach(back_route, i, link) {
 593                   lmm_expand(network_maxmin_system, link->lmm_resource.constraint,
 594                action->variable, .05);
 595           }
 596   }  /* LARGE PLATFORMS HACK:
 597      expand also with src->link and dst->link */
 598
 599   /* saving the src and dst of this communication */
 600   action->src = src;
 601   action->dst = dst;
 602
 603   XBT_OUT;
 604
 605   return (surf_action_t) action;
 606 }
 607
 608 static double net_get_link_bandwidth(const void *link)
 609 {
 610   surf_resource_lmm_t lmm = (surf_resource_lmm_t) link;
 611   return lmm->power.peak * lmm->power.scale;
 612 }
 613
 614 static int net_link_shared(const void *link)
 615 {
 616   return lmm_constraint_is_shared(((surf_resource_lmm_t) link)->constraint);
 617 }
 618
 619 static void net_action_suspend(surf_action_t action)
 620 {
 621   ((surf_action_network_CM02_t) action)->suspended = 1;
 622   lmm_update_variable_weight(network_maxmin_system,
 623                              ((surf_action_network_CM02_t) action)->variable,
 624                              0.0);
 625 }
 626
 627 static void net_action_resume(surf_action_t action)
 628 {
 629   if (((surf_action_network_CM02_t) action)->suspended) {
 630     lmm_update_variable_weight(network_maxmin_system,
 631                                ((surf_action_network_CM02_t)
 632                                 action)->variable,
 633                                ((surf_action_network_CM02_t) action)->weight);
 634     ((surf_action_network_CM02_t) action)->suspended = 0;
 635   }
 636 }
 637
 638 static int net_action_is_suspended(surf_action_t action)
 639 {
 640   return ((surf_action_network_CM02_t) action)->suspended;
 641 }
 642
 643 void net_action_set_max_duration(surf_action_t action, double duration)
 644 {
 645   action->max_duration = duration;
 646 }
 647
 648 static void net_finalize(void)
 649 {
 650   surf_model_exit(surf_network_model);
 651   surf_network_model = NULL;
 652
 653   //used_routing->finalize(); // COMMENTED BY DAVID
 654
 655   global_routing->finalize();
 656
 657   lmm_system_free(network_maxmin_system);
 658   network_maxmin_system = NULL;
 659 }
 660
 661 static void surf_network_model_init_internal(void)
 662 {
 663   surf_network_model = surf_model_init();
 664
 665   surf_network_model->name = "network";
 666   surf_network_model->action_unref = net_action_unref;
 667   surf_network_model->action_cancel = net_action_cancel;
 668   surf_network_model->action_recycle = net_action_recycle;
 669   surf_network_model->get_remains = net_action_get_remains;
 670   surf_network_model->get_latency_limited = net_get_link_latency;
 671
 672   surf_network_model->model_private->resource_used = net_resource_used;
 673   surf_network_model->model_private->share_resources = net_share_resources;
 674   surf_network_model->model_private->update_actions_state =
 675     net_update_actions_state;
 676   surf_network_model->model_private->update_resource_state =
 677     net_update_resource_state;
 678   surf_network_model->model_private->finalize = net_finalize;
 679
 680   surf_network_model->suspend = net_action_suspend;
 681   surf_network_model->resume = net_action_resume;
 682   surf_network_model->is_suspended = net_action_is_suspended;
 683   surf_cpu_model->set_max_duration = net_action_set_max_duration;
 684
 685   surf_network_model->extension.network.communicate = net_communicate;
 686   surf_network_model->extension.network.get_link_bandwidth =
 687     net_get_link_bandwidth;
 688   surf_network_model->extension.network.link_shared = net_link_shared;
 689   surf_network_model->extension.network.add_traces = net_add_traces;
 690   surf_network_model->extension.network.create_resource = net_create_resource;
 691
 692   if (!network_maxmin_system)
 693     network_maxmin_system = lmm_system_new();
 694
 695   routing_model_create(sizeof(link_CM02_t),
 696                        net_link_new(xbt_strdup("__loopback__"),
 697                                 498000000, NULL, 0.000015, NULL,
 698                                 SURF_RESOURCE_ON, NULL, SURF_LINK_FATPIPE,
 699                                 NULL));
 700 }
 701
 702
 703
 704 /************************************************************************/
 705 /* New model based on LV08 and experimental results of MPI ping-pongs   */
 706 /************************************************************************/
 707 void surf_network_model_init_SMPI(const char *filename)
 708 {
 709
 710   if (surf_network_model)
 711     return;
 712   surf_network_model_init_internal();
 713   latency_factor_callback = &smpi_latency_factor;
 714   bandwidth_factor_callback = &smpi_bandwidth_factor;
 715   bandwidth_constraint_callback = &smpi_bandwidth_constraint;
 716   net_define_callbacks(filename);
 717   xbt_dynar_push(model_list, &surf_network_model);
 718   network_solve = lmm_solve;
 719
 720   xbt_cfg_setdefault_double(_surf_cfg_set,"network/weight_S", 8775);
 721
 722   update_model_description(surf_network_model_description,
 723                            "SMPI", surf_network_model);
 724 }
 725
 726 /************************************************************************/
 727 /* New model based on optimizations discussed during this thesis        */
 728 /************************************************************************/
 729 void surf_network_model_init_LegrandVelho(const char *filename)
 730 {
 731
 732   if (surf_network_model)
 733     return;
 734   surf_network_model_init_internal();
 735   net_define_callbacks(filename);
 736   xbt_dynar_push(model_list, &surf_network_model);
 737   network_solve = lmm_solve;
 738
 739   xbt_cfg_setdefault_double(_surf_cfg_set,"network/latency_factor",10.4);
 740   xbt_cfg_setdefault_double(_surf_cfg_set,"network/bandwidth_factor", 0.92);
 741   xbt_cfg_setdefault_double(_surf_cfg_set,"network/weight_S", 8775);
 742
 743   update_model_description(surf_network_model_description,
 744                            "LV08", surf_network_model);
 745 }
 746
 747 /***************************************************************************/
 748 /* The nice TCP sharing model designed by Loris Marchal and Henri Casanova */
 749 /***************************************************************************/
 750 /* @TechReport{      rr-lip2002-40, */
 751 /*   author        = {Henri Casanova and Loris Marchal}, */
 752 /*   institution   = {LIP}, */
 753 /*   title         = {A Network Model for Simulation of Grid Application}, */
 754 /*   number        = {2002-40}, */
 755 /*   month         = {oct}, */
 756 /*   year          = {2002} */
 757 /* } */
 758 void surf_network_model_init_CM02(const char *filename)
 759 {
 760
 761   if (surf_network_model)
 762     return;
 763   surf_network_model_init_internal();
 764   net_define_callbacks(filename);
 765   xbt_dynar_push(model_list, &surf_network_model);
 766   network_solve = lmm_solve;
 767
 768   update_model_description(surf_network_model_description,
 769                            "CM02", surf_network_model);
 770 }
 771
 772 void surf_network_model_init_Reno(const char *filename)
 773 {
 774   if (surf_network_model)
 775     return;
 776   surf_network_model_init_internal();
 777   net_define_callbacks(filename);
 778
 779   xbt_dynar_push(model_list, &surf_network_model);
 780   lmm_set_default_protocol_function(func_reno_f, func_reno_fp, func_reno_fpi);
 781   network_solve = lagrange_solve;
 782
 783   xbt_cfg_setdefault_double(_surf_cfg_set,"network/latency_factor", 10.4);
 784   xbt_cfg_setdefault_double(_surf_cfg_set,"network/bandwidth_factor", 0.92);
 785   xbt_cfg_setdefault_double(_surf_cfg_set,"network/weight_S", 8775);
 786
 787   update_model_description(surf_network_model_description,
 788                            "Reno", surf_network_model);
 789 }
 790
 791
 792 void surf_network_model_init_Reno2(const char *filename)
 793 {
 794   if (surf_network_model)
 795     return;
 796   surf_network_model_init_internal();
 797   net_define_callbacks(filename);
 798
 799   xbt_dynar_push(model_list, &surf_network_model);
 800   lmm_set_default_protocol_function(func_reno2_f, func_reno2_fp,
 801                                     func_reno2_fpi);
 802   network_solve = lagrange_solve;
 803
 804   xbt_cfg_setdefault_double(_surf_cfg_set,"network/latency_factor", 10.4);
 805   xbt_cfg_setdefault_double(_surf_cfg_set,"network/bandwidth_factor", 0.92);
 806   xbt_cfg_setdefault_double(_surf_cfg_set,"network/weight_S_parameter", 8775);
 807
 808   update_model_description(surf_network_model_description,
 809                            "Reno2", surf_network_model);
 810 }
 811
 812 void surf_network_model_init_Vegas(const char *filename)
 813 {
 814   if (surf_network_model)
 815     return;
 816   surf_network_model_init_internal();
 817   net_define_callbacks(filename);
 818
 819   xbt_dynar_push(model_list, &surf_network_model);
 820   lmm_set_default_protocol_function(func_vegas_f, func_vegas_fp,
 821                                     func_vegas_fpi);
 822   network_solve = lagrange_solve;
 823
 824   xbt_cfg_setdefault_double(_surf_cfg_set,"network/latency_factor", 10.4);
 825   xbt_cfg_setdefault_double(_surf_cfg_set,"network/bandwidth_factor", 0.92);
 826   xbt_cfg_setdefault_double(_surf_cfg_set,"network/weight_S", 8775);
 827
 828   update_model_description(surf_network_model_description,
 829                            "Vegas", surf_network_model);
 830 }
 831
 832