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 = 1;
  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_add_traces(void)
 170 {
 171   xbt_dict_cursor_t cursor = NULL;
 172   char *trace_name, *elm;
 173
 174   static int called = 0;
 175   if (called)
 176     return;
 177   called = 1;
 178
 179   /* connect all traces relative to network */
 180   xbt_dict_foreach(trace_connect_list_link_avail, cursor, trace_name, elm) {
 181     tmgr_trace_t trace = xbt_dict_get_or_null(traces_set_list, trace_name);
 182     link_CM02_t link =
 183       xbt_dict_get_or_null(surf_network_model->resource_set, elm);
 184
 185     xbt_assert2(link, "Cannot connect trace %s to link %s: link undefined",
 186                 trace_name, elm);
 187     xbt_assert2(trace, "Cannot connect trace %s to link %s: trace undefined",
 188                 trace_name, elm);
 189
 190     link->lmm_resource.state_event =
 191       tmgr_history_add_trace(history, trace, 0.0, 0, link);
 192   }
 193
 194   xbt_dict_foreach(trace_connect_list_bandwidth, cursor, trace_name, elm) {
 195     tmgr_trace_t trace = xbt_dict_get_or_null(traces_set_list, trace_name);
 196     link_CM02_t link =
 197       xbt_dict_get_or_null(surf_network_model->resource_set, elm);
 198
 199     xbt_assert2(link, "Cannot connect trace %s to link %s: link undefined",
 200                 trace_name, elm);
 201     xbt_assert2(trace, "Cannot connect trace %s to link %s: trace undefined",
 202                 trace_name, elm);
 203
 204     link->lmm_resource.power.event =
 205       tmgr_history_add_trace(history, trace, 0.0, 0, link);
 206   }
 207
 208   xbt_dict_foreach(trace_connect_list_latency, cursor, trace_name, elm) {
 209     tmgr_trace_t trace = xbt_dict_get_or_null(traces_set_list, trace_name);
 210     link_CM02_t link =
 211       xbt_dict_get_or_null(surf_network_model->resource_set, elm);
 212
 213     xbt_assert2(link, "Cannot connect trace %s to link %s: link undefined",
 214                 trace_name, elm);
 215     xbt_assert2(trace, "Cannot connect trace %s to link %s: trace undefined",
 216                 trace_name, elm);
 217
 218     link->lat_event = tmgr_history_add_trace(history, trace, 0.0, 0, link);
 219   }
 220 }
 221
 222 static void net_define_callbacks(const char *file)
 223 {
 224   /* Figuring out the network links */
 225   surfxml_add_callback(STag_surfxml_link_cb_list, &net_parse_link_init);
 226   surfxml_add_callback(ETag_surfxml_platform_cb_list, &net_add_traces);
 227 }
 228
 229 static int net_resource_used(void *resource_id)
 230 {
 231   return lmm_constraint_used(network_maxmin_system,
 232                              ((surf_resource_lmm_t) resource_id)->constraint);
 233 }
 234
 235 static int net_action_unref(surf_action_t action)
 236 {
 237   action->refcount--;
 238   if (!action->refcount) {
 239     xbt_swag_remove(action, action->state_set);
 240     if (((surf_action_network_CM02_t) action)->variable)
 241       lmm_variable_free(network_maxmin_system,
 242                         ((surf_action_network_CM02_t) action)->variable);
 243     free(action);
 244     return 1;
 245   }
 246   return 0;
 247 }
 248
 249 static void net_action_cancel(surf_action_t action)
 250 {
 251   surf_network_model->action_state_set((surf_action_t) action,
 252                                        SURF_ACTION_FAILED);
 253   return;
 254 }
 255
 256 static void net_action_recycle(surf_action_t action)
 257 {
 258   return;
 259 }
 260
 261 static int net_get_link_latency(surf_action_t action)
 262 {
 263   return action->latency_limited;
 264 }
 265
 266 static double net_action_get_remains(surf_action_t action)
 267 {
 268   return action->remains;
 269 }
 270
 271 static double net_share_resources(double now)
 272 {
 273   s_surf_action_network_CM02_t s_action;
 274   surf_action_network_CM02_t action = NULL;
 275   xbt_swag_t running_actions = surf_network_model->states.running_action_set;
 276   double min;
 277
 278   min = generic_maxmin_share_resources(running_actions,
 279                                        xbt_swag_offset(s_action,
 280                                                        variable),
 281                                        network_maxmin_system, network_solve);
 282
 283 #define VARIABLE(action) (*((lmm_variable_t*)(((char *) (action)) + xbt_swag_offset(s_action, variable)  )))
 284
 285   xbt_swag_foreach(action, running_actions) {
 286         if( lmm_is_variable_limited_by_latency(action->variable) ){
 287                 (action->generic_action).latency_limited = 1;
 288         }else{
 289                 (action->generic_action).latency_limited = 0;
 290         }
 291     if (action->latency > 0) {
 292       if (min < 0)
 293         min = action->latency;
 294       else if (action->latency < min)
 295         min = action->latency;
 296     }
 297   }
 298
 299   return min;
 300 }
 301
 302 static void net_update_actions_state(double now, double delta)
 303 {
 304   double deltap = 0.0;
 305   surf_action_network_CM02_t action = NULL;
 306   surf_action_network_CM02_t next_action = NULL;
 307   xbt_swag_t running_actions = surf_network_model->states.running_action_set;
 308   /*
 309      xbt_swag_t failed_actions =
 310      surf_network_model->states.failed_action_set;
 311    */
 312
 313   xbt_swag_foreach_safe(action, next_action, running_actions) {
 314
 315 #ifdef HAVE_TRACING
 316     xbt_dynar_t route = used_routing->get_route(action->src, action->dst);
 317     link_CM02_t link;
 318     unsigned int i;
 319     xbt_dynar_foreach(route, i, link) {
 320         TRACE_surf_link_set_utilization (link->lmm_resource.generic_resource.name,
 321           action->generic_action.data, lmm_variable_getvalue(action->variable), now-delta, delta);
 322     }
 323 #endif
 324
 325     deltap = delta;
 326     if (action->latency > 0) {
 327       if (action->latency > deltap) {
 328         double_update(&(action->latency), deltap);
 329         deltap = 0.0;
 330       } else {
 331         double_update(&(deltap), action->latency);
 332         action->latency = 0.0;
 333       }
 334       if ((action->latency == 0.0) && !(action->suspended))
 335         lmm_update_variable_weight(network_maxmin_system, action->variable,
 336                                    action->weight);
 337     }
 338     double_update(&(action->generic_action.remains),
 339                   lmm_variable_getvalue(action->variable) * deltap);
 340     if (action->generic_action.max_duration != NO_MAX_DURATION)
 341       double_update(&(action->generic_action.max_duration), delta);
 342
 343     if ((action->generic_action.remains <= 0) &&
 344         (lmm_get_variable_weight(action->variable) > 0)) {
 345       action->generic_action.finish = surf_get_clock();
 346       surf_network_model->action_state_set((surf_action_t) action,
 347                                            SURF_ACTION_DONE);
 348     } else if ((action->generic_action.max_duration != NO_MAX_DURATION)
 349                && (action->generic_action.max_duration <= 0)) {
 350       action->generic_action.finish = surf_get_clock();
 351       surf_network_model->action_state_set((surf_action_t) action,
 352                                            SURF_ACTION_DONE);
 353     }
 354   }
 355
 356   return;
 357 }
 358
 359 static void net_update_resource_state(void *id,
 360                                   tmgr_trace_event_t event_type,
 361                                   double value, double date)
 362 {
 363   link_CM02_t nw_link = id;
 364   /*   printf("[" "%lg" "] Asking to update network card \"%s\" with value " */
 365   /*     "%lg" " for event %p\n", surf_get_clock(), nw_link->name, */
 366   /*     value, event_type); */
 367
 368   if (event_type == nw_link->lmm_resource.power.event) {
 369     double delta =
 370       sg_weight_S_parameter / value - sg_weight_S_parameter /
 371       (nw_link->lmm_resource.power.peak * nw_link->lmm_resource.power.scale);
 372     lmm_variable_t var = NULL;
 373     lmm_element_t elem = NULL;
 374     surf_action_network_CM02_t action = NULL;
 375
 376     nw_link->lmm_resource.power.peak = value;
 377     lmm_update_constraint_bound(network_maxmin_system,
 378                                 nw_link->lmm_resource.constraint,
 379                                 sg_bandwidth_factor *
 380                                 (nw_link->lmm_resource.power.peak *
 381                                  nw_link->lmm_resource.power.scale));
 382 #ifdef HAVE_TRACING
 383     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));
 384 #endif
 385     if (sg_weight_S_parameter > 0) {
 386       while ((var = lmm_get_var_from_cnst
 387               (network_maxmin_system, nw_link->lmm_resource.constraint,
 388                &elem))) {
 389         action = lmm_variable_id(var);
 390         action->weight += delta;
 391         if (!(action->suspended))
 392           lmm_update_variable_weight(network_maxmin_system, action->variable,
 393                                      action->weight);
 394       }
 395     }
 396     if (tmgr_trace_event_free(event_type))
 397       nw_link->lmm_resource.power.event = NULL;
 398   } else if (event_type == nw_link->lat_event) {
 399     double delta = value - nw_link->lat_current;
 400     lmm_variable_t var = NULL;
 401     lmm_element_t elem = NULL;
 402     surf_action_network_CM02_t action = NULL;
 403
 404     nw_link->lat_current = value;
 405     while ((var = lmm_get_var_from_cnst
 406             (network_maxmin_system, nw_link->lmm_resource.constraint,
 407              &elem))) {
 408       action = lmm_variable_id(var);
 409       action->lat_current += delta;
 410       action->weight += delta;
 411       if (action->rate < 0)
 412         lmm_update_variable_bound(network_maxmin_system, action->variable,
 413                                   sg_tcp_gamma / (2.0 * action->lat_current));
 414       else{
 415         lmm_update_variable_bound(network_maxmin_system, action->variable,
 416                                   min(action->rate,
 417                                       sg_tcp_gamma / (2.0 *
 418                                                       action->lat_current)));
 419
 420         if(action->rate < sg_tcp_gamma / (2.0 * action->lat_current) ){
 421                 INFO0("Flow is limited BYBANDWIDTH");
 422         }else{
 423                 INFO1("Flow is limited BYLATENCY, latency of flow is %f",action->lat_current);
 424         }
 425       }
 426       if (!(action->suspended))
 427         lmm_update_variable_weight(network_maxmin_system, action->variable,
 428                                    action->weight);
 429
 430     }
 431     if (tmgr_trace_event_free(event_type))
 432       nw_link->lat_event = NULL;
 433   } else if (event_type == nw_link->lmm_resource.state_event) {
 434     if (value > 0)
 435       nw_link->lmm_resource.state_current = SURF_RESOURCE_ON;
 436     else {
 437       lmm_constraint_t cnst = nw_link->lmm_resource.constraint;
 438       lmm_variable_t var = NULL;
 439       lmm_element_t elem = NULL;
 440
 441       nw_link->lmm_resource.state_current = SURF_RESOURCE_OFF;
 442       while ((var = lmm_get_var_from_cnst
 443               (network_maxmin_system, cnst, &elem))) {
 444         surf_action_t action = lmm_variable_id(var);
 445
 446         if (surf_action_state_get(action) == SURF_ACTION_RUNNING ||
 447             surf_action_state_get(action) == SURF_ACTION_READY) {
 448           action->finish = date;
 449           surf_network_model->action_state_set(action, SURF_ACTION_FAILED);
 450         }
 451       }
 452     }
 453     if (tmgr_trace_event_free(event_type))
 454       nw_link->lmm_resource.state_event = NULL;
 455   } else {
 456     CRITICAL0("Unknown event ! \n");
 457     xbt_abort();
 458   }
 459
 460   return;
 461 }
 462
 463
 464 static surf_action_t net_communicate(const char *src_name, const char *dst_name,
 465                                  int src, int dst, double size, double rate)
 466 {
 467   unsigned int i;
 468   link_CM02_t link;
 469   int failed = 0;
 470   surf_action_network_CM02_t action = NULL;
 471   double bandwidth_bound;
 472   /* LARGE PLATFORMS HACK:
 473      Add a link_CM02_t *link and a int link_nb to network_card_CM02_t. It will represent local links for this node
 474      Use the cluster_id for ->id */
 475   xbt_dynar_t route = used_routing->get_route(src, dst);
 476   xbt_dynar_t back_route = NULL;
 477   int constraints_per_variable = 0;
 478
 479   if( sg_network_fullduplex == 1){
 480           back_route = used_routing->get_route(dst, src);
 481   }
 482
 483   /* LARGE PLATFORMS HACK:
 484      total_route_size = route_size + src->link_nb + dst->nb */
 485
 486   XBT_IN4("(%s,%s,%g,%g)", src_name, dst_name, size, rate);
 487   /* LARGE PLATFORMS HACK:
 488      assert on total_route_size */
 489   xbt_assert2(xbt_dynar_length(route),
 490               "You're trying to send data from %s to %s but there is no connection between these two hosts.",
 491               src_name, dst_name);
 492
 493   xbt_dynar_foreach(route, i, link) {
 494     if (link->lmm_resource.state_current == SURF_RESOURCE_OFF) {
 495       failed = 1;
 496       break;
 497     }
 498   }
 499   action =
 500     surf_action_new(sizeof(s_surf_action_network_CM02_t), size,
 501                     surf_network_model, failed);
 502   (action->generic_action).latency_limited = 0;
 503
 504   xbt_swag_insert(action, action->generic_action.state_set);
 505   action->rate = rate;
 506
 507   action->latency = 0.0;
 508   action->weight = 0.0;
 509   bandwidth_bound = -1.0;
 510   xbt_dynar_foreach(route, i, link) {
 511     action->latency += link->lat_current;
 512     action->weight +=
 513       link->lat_current +
 514       sg_weight_S_parameter /
 515       (link->lmm_resource.power.peak * link->lmm_resource.power.scale);
 516     if(bandwidth_bound < 0.0)
 517       bandwidth_bound = (*bandwidth_factor_callback)(size) * (link->lmm_resource.power.peak * link->lmm_resource.power.scale);
 518     else
 519       bandwidth_bound = min(bandwidth_bound, (*bandwidth_factor_callback)(size) * (link->lmm_resource.power.peak * link->lmm_resource.power.scale));
 520   }
 521   /* LARGE PLATFORMS HACK:
 522      Add src->link and dst->link latencies */
 523   action->lat_current = action->latency;
 524   action->latency *= (*latency_factor_callback)(size);
 525   action->rate = (*bandwidth_constraint_callback)(action->rate, bandwidth_bound, size);
 526
 527   /* LARGE PLATFORMS HACK:
 528      lmm_variable_new(..., total_route_size) */
 529   if(back_route != NULL){
 530           constraints_per_variable = xbt_dynar_length(route)+xbt_dynar_length(back_route);
 531   }else{
 532           constraints_per_variable = xbt_dynar_length(route);
 533   }
 534
 535   if (action->latency > 0)
 536     action->variable =
 537       lmm_variable_new(network_maxmin_system, action, 0.0, -1.0,constraints_per_variable);
 538   else
 539     action->variable =
 540       lmm_variable_new(network_maxmin_system, action, 1.0, -1.0,constraints_per_variable);
 541
 542   if (action->rate < 0) {
 543     if (action->lat_current > 0)
 544       lmm_update_variable_bound(network_maxmin_system, action->variable,
 545                                 sg_tcp_gamma / (2.0 * action->lat_current));
 546     else
 547       lmm_update_variable_bound(network_maxmin_system, action->variable,
 548                                 -1.0);
 549   } else {
 550     if (action->lat_current > 0)
 551       lmm_update_variable_bound(network_maxmin_system, action->variable,
 552                                 min(action->rate,
 553                                     sg_tcp_gamma / (2.0 *
 554                                                     action->lat_current)));
 555     else
 556       lmm_update_variable_bound(network_maxmin_system, action->variable,
 557                                 action->rate);
 558   }
 559
 560   xbt_dynar_foreach(route, i, link) {
 561     lmm_expand(network_maxmin_system, link->lmm_resource.constraint,
 562                action->variable, 1.0);
 563   }
 564
 565   if( sg_network_fullduplex == 1){
 566           DEBUG1("Fullduplex active adding backward flow using 5%c", '%');
 567           xbt_dynar_foreach(back_route, i, link) {
 568                   lmm_expand(network_maxmin_system, link->lmm_resource.constraint,
 569                action->variable, .05);
 570           }
 571   }  /* LARGE PLATFORMS HACK:
 572      expand also with src->link and dst->link */
 573
 574   /* saving the src and dst of this communication */
 575   action->src = src;
 576   action->dst = dst;
 577
 578   XBT_OUT;
 579
 580   return (surf_action_t) action;
 581 }
 582
 583 static double net_get_link_bandwidth(const void *link)
 584 {
 585   surf_resource_lmm_t lmm = (surf_resource_lmm_t) link;
 586   return lmm->power.peak * lmm->power.scale;
 587 }
 588
 589 static int net_link_shared(const void *link)
 590 {
 591   return lmm_constraint_is_shared(((surf_resource_lmm_t) link)->constraint);
 592 }
 593
 594 static void net_action_suspend(surf_action_t action)
 595 {
 596   ((surf_action_network_CM02_t) action)->suspended = 1;
 597   lmm_update_variable_weight(network_maxmin_system,
 598                              ((surf_action_network_CM02_t) action)->variable,
 599                              0.0);
 600 }
 601
 602 static void net_action_resume(surf_action_t action)
 603 {
 604   if (((surf_action_network_CM02_t) action)->suspended) {
 605     lmm_update_variable_weight(network_maxmin_system,
 606                                ((surf_action_network_CM02_t)
 607                                 action)->variable,
 608                                ((surf_action_network_CM02_t) action)->weight);
 609     ((surf_action_network_CM02_t) action)->suspended = 0;
 610   }
 611 }
 612
 613 static int net_action_is_suspended(surf_action_t action)
 614 {
 615   return ((surf_action_network_CM02_t) action)->suspended;
 616 }
 617
 618 static void net_action_set_max_duration(surf_action_t action, double duration)
 619 {
 620   action->max_duration = duration;
 621 }
 622
 623
 624 /**
 625  * FIXME : this should be done in the binding code !!
 626  */
 627 void network_create_resource(char *name,
 628         double initial_bandwidth,double initial_latency)
 629 {
 630
 631         char* name_link;
 632         double bw_initial;
 633         tmgr_trace_t bw_trace;
 634         double lat_initial;
 635         tmgr_trace_t lat_trace;
 636         e_surf_resource_state_t state_initial_link = SURF_RESOURCE_ON;
 637         e_surf_link_sharing_policy_t policy_initial_link = SURF_LINK_SHARED;
 638         tmgr_trace_t state_trace;
 639
 640         name_link = xbt_strdup(name);
 641         bw_initial = initial_bandwidth;
 642         bw_trace = tmgr_trace_new("");
 643         lat_initial = initial_latency;
 644         lat_trace = tmgr_trace_new("");
 645         // FIXME Hard Coded Values
 646         //state_initial_link = SURF_RESOURCE_ON;
 647         //policy_initial_link = SURF_LINK_SHARED;
 648         state_trace = tmgr_trace_new("");
 649
 650         net_link_new(name_link, bw_initial, bw_trace,
 651                    lat_initial, lat_trace, state_initial_link, state_trace,
 652                    policy_initial_link, xbt_dict_new());
 653 }
 654
 655 static void net_finalize(void)
 656 {
 657   surf_model_exit(surf_network_model);
 658   surf_network_model = NULL;
 659
 660   used_routing->finalize();
 661   lmm_system_free(network_maxmin_system);
 662   network_maxmin_system = NULL;
 663 }
 664
 665 static void surf_network_model_init_internal(void)
 666 {
 667   surf_network_model = surf_model_init();
 668
 669   surf_network_model->name = "network";
 670   surf_network_model->action_unref = net_action_unref;
 671   surf_network_model->action_cancel = net_action_cancel;
 672   surf_network_model->action_recycle = net_action_recycle;
 673   surf_network_model->get_remains = net_action_get_remains;
 674   surf_network_model->get_latency_limited = net_get_link_latency;
 675
 676   surf_network_model->model_private->resource_used = net_resource_used;
 677   surf_network_model->model_private->share_resources = net_share_resources;
 678   surf_network_model->model_private->update_actions_state =
 679     net_update_actions_state;
 680   surf_network_model->model_private->update_resource_state =
 681     net_update_resource_state;
 682   surf_network_model->model_private->finalize = net_finalize;
 683
 684   surf_network_model->suspend = net_action_suspend;
 685   surf_network_model->resume = net_action_resume;
 686   surf_network_model->is_suspended = net_action_is_suspended;
 687   surf_cpu_model->set_max_duration = net_action_set_max_duration;
 688
 689   surf_network_model->extension.network.communicate = net_communicate;
 690   surf_network_model->extension.network.get_link_bandwidth =
 691     net_get_link_bandwidth;
 692   surf_network_model->extension.network.link_shared = net_link_shared;
 693   surf_network_model->extension.network.create_resource = network_create_resource;
 694   surf_network_model->extension.network.add_traces = net_add_traces;
 695
 696   if (!network_maxmin_system)
 697     network_maxmin_system = lmm_system_new();
 698
 699   routing_model_create(sizeof(link_CM02_t),
 700                        net_link_new(xbt_strdup("__loopback__"),
 701                                 498000000, NULL, 0.000015, NULL,
 702                                 SURF_RESOURCE_ON, NULL, SURF_LINK_FATPIPE,
 703                                 NULL));
 704 }
 705
 706
 707
 708 /************************************************************************/
 709 /* New model based on LV08 and experimental results of MPI ping-pongs   */
 710 /************************************************************************/
 711 void surf_network_model_init_SMPI(const char *filename)
 712 {
 713
 714   if (surf_network_model)
 715     return;
 716   surf_network_model_init_internal();
 717   latency_factor_callback = &smpi_latency_factor;
 718   bandwidth_factor_callback = &smpi_bandwidth_factor;
 719   bandwidth_constraint_callback = &smpi_bandwidth_constraint;
 720   net_define_callbacks(filename);
 721   xbt_dynar_push(model_list, &surf_network_model);
 722   network_solve = lmm_solve;
 723
 724   xbt_cfg_setdefault_double(_surf_cfg_set,"network/weight_S", 8775);
 725
 726   update_model_description(surf_network_model_description,
 727                            "SMPI", surf_network_model);
 728 }
 729
 730 /************************************************************************/
 731 /* New model based on optimizations discussed during this thesis        */
 732 /************************************************************************/
 733 void surf_network_model_init_LegrandVelho(const char *filename)
 734 {
 735
 736   if (surf_network_model)
 737     return;
 738   surf_network_model_init_internal();
 739   net_define_callbacks(filename);
 740   xbt_dynar_push(model_list, &surf_network_model);
 741   network_solve = lmm_solve;
 742
 743   xbt_cfg_setdefault_double(_surf_cfg_set,"network/latency_factor",10.4);
 744   xbt_cfg_setdefault_double(_surf_cfg_set,"network/bandwidth_factor", 0.92);
 745   xbt_cfg_setdefault_double(_surf_cfg_set,"network/weight_S", 8775);
 746
 747   update_model_description(surf_network_model_description,
 748                            "LV08", surf_network_model);
 749 }
 750
 751 /***************************************************************************/
 752 /* The nice TCP sharing model designed by Loris Marchal and Henri Casanova */
 753 /***************************************************************************/
 754 /* @TechReport{      rr-lip2002-40, */
 755 /*   author        = {Henri Casanova and Loris Marchal}, */
 756 /*   institution   = {LIP}, */
 757 /*   title         = {A Network Model for Simulation of Grid Application}, */
 758 /*   number        = {2002-40}, */
 759 /*   month         = {oct}, */
 760 /*   year          = {2002} */
 761 /* } */
 762 void surf_network_model_init_CM02(const char *filename)
 763 {
 764
 765   if (surf_network_model)
 766     return;
 767   surf_network_model_init_internal();
 768   net_define_callbacks(filename);
 769   xbt_dynar_push(model_list, &surf_network_model);
 770   network_solve = lmm_solve;
 771
 772   update_model_description(surf_network_model_description,
 773                            "CM02", surf_network_model);
 774 }
 775
 776 void surf_network_model_init_Reno(const char *filename)
 777 {
 778   if (surf_network_model)
 779     return;
 780   surf_network_model_init_internal();
 781   net_define_callbacks(filename);
 782
 783   xbt_dynar_push(model_list, &surf_network_model);
 784   lmm_set_default_protocol_function(func_reno_f, func_reno_fp, func_reno_fpi);
 785   network_solve = lagrange_solve;
 786
 787   xbt_cfg_setdefault_double(_surf_cfg_set,"network/latency_factor", 10.4);
 788   xbt_cfg_setdefault_double(_surf_cfg_set,"network/bandwidth_factor", 0.92);
 789   xbt_cfg_setdefault_double(_surf_cfg_set,"network/weight_S", 8775);
 790
 791   update_model_description(surf_network_model_description,
 792                            "Reno", surf_network_model);
 793 }
 794
 795
 796 void surf_network_model_init_Reno2(const char *filename)
 797 {
 798   if (surf_network_model)
 799     return;
 800   surf_network_model_init_internal();
 801   net_define_callbacks(filename);
 802
 803   xbt_dynar_push(model_list, &surf_network_model);
 804   lmm_set_default_protocol_function(func_reno2_f, func_reno2_fp,
 805                                     func_reno2_fpi);
 806   network_solve = lagrange_solve;
 807
 808   xbt_cfg_setdefault_double(_surf_cfg_set,"network/latency_factor", 10.4);
 809   xbt_cfg_setdefault_double(_surf_cfg_set,"network/bandwidth_factor", 0.92);
 810   xbt_cfg_setdefault_double(_surf_cfg_set,"network/weight_S_parameter", 8775);
 811
 812   update_model_description(surf_network_model_description,
 813                            "Reno2", surf_network_model);
 814 }
 815
 816 void surf_network_model_init_Vegas(const char *filename)
 817 {
 818   if (surf_network_model)
 819     return;
 820   surf_network_model_init_internal();
 821   net_define_callbacks(filename);
 822
 823   xbt_dynar_push(model_list, &surf_network_model);
 824   lmm_set_default_protocol_function(func_vegas_f, func_vegas_fp,
 825                                     func_vegas_fpi);
 826   network_solve = lagrange_solve;
 827
 828   xbt_cfg_setdefault_double(_surf_cfg_set,"network/latency_factor", 10.4);
 829   xbt_cfg_setdefault_double(_surf_cfg_set,"network/bandwidth_factor", 0.92);
 830   xbt_cfg_setdefault_double(_surf_cfg_set,"network/weight_S", 8775);
 831
 832   update_model_description(surf_network_model_description,
 833                            "Vegas", surf_network_model);
 834 }
 835
 836