src/surf/network_im.c

   1
   2 /*
   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.
   7  */
   8
   9 /* Copyright (c) 2009, 2010, 2011. The SimGrid Team.
  10  * All rights reserved.                                                     */
  11
  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. */
  14
  15 #include "xbt/log.h"
  16 #include "xbt/str.h"
  17 #include "surf_private.h"
  18 #include "xbt/dict.h"
  19 #include "maxmin_private.h"
  20
  21 #undef GENERIC_ACTION
  22 #define GENERIC_ACTION(action) action->generic_action
  23
  24
  25 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(surf_network_im, surf,
  26                                 "Logging specific to the SURF network module");
  27
  28
  29 enum heap_action_type{
  30   LATENCY = 100,
  31   MAX_DURATION,
  32   NORMAL,
  33   NOTSET
  34 };
  35
  36 typedef struct surf_action_network_CM02_im {
  37   s_surf_action_t generic_action;
  38   s_xbt_swag_hookup_t action_list_hookup;
  39   double latency;
  40   double lat_current;
  41   double weight;
  42   lmm_variable_t variable;
  43   double rate;
  44 #ifdef HAVE_LATENCY_BOUND_TRACKING
  45   int latency_limited;
  46 #endif
  47   int suspended;
  48 #ifdef HAVE_TRACING
  49   char *src_name;
  50   char *dst_name;
  51 #endif
  52   int index_heap;
  53   enum heap_action_type hat;
  54   double last_update;
  55 } s_surf_action_network_CM02_im_t, *surf_action_network_CM02_im_t;
  56
  57
  58 typedef struct network_link_CM02_im {
  59   s_surf_resource_lmm_t lmm_resource;   /* must remain first to be added to a trace */
  60
  61   /* Using this object with the public part of
  62      model does not make sense */
  63   double lat_current;
  64   tmgr_trace_event_t lat_event;
  65 } s_link_CM02_im_t, *link_CM02_im_t;
  66
  67
  68
  69
  70
  71
  72
  73
  74 extern surf_model_t surf_network_model;
  75 static lmm_system_t network_maxmin_system = NULL;
  76 static void (*network_solve) (lmm_system_t) = NULL;
  77
  78 extern double sg_latency_factor;
  79 extern double sg_bandwidth_factor;
  80 extern double sg_weight_S_parameter;
  81
  82 extern double sg_tcp_gamma;
  83 extern int sg_network_fullduplex;
  84
  85
  86 static void im_net_action_recycle(surf_action_t action);
  87 static int im_net_get_link_latency_limited(surf_action_t action);
  88 static int im_net_action_is_suspended(surf_action_t action);
  89 static double im_net_action_get_remains(surf_action_t action);
  90 static void im_net_action_set_max_duration(surf_action_t action, double duration);
  91 static void surf_network_model_init_CM02_im(const char *filename);
  92 static void im_net_update_actions_state(double now, double delta);
  93 static void update_action_remaining(double now);
  94
  95 static xbt_swag_t im_net_modified_set = NULL;
  96 static xbt_heap_t im_net_action_heap = NULL;
  97 xbt_swag_t keep_track = NULL;
  98 extern int sg_maxmin_selective_update;
  99
 100 /* added to manage the communication action's heap */
 101 static void im_net_action_update_index_heap(void *action, int i)
 102 {
 103   ((surf_action_network_CM02_im_t) action)->index_heap = i;
 104 }
 105
 106 /* insert action on heap using a given key and a hat (heap_action_type)
 107  * a hat can be of three types for communications:
 108  *
 109  * NORMAL = this is a normal heap entry stating the date to finish transmitting
 110  * LATENCY = this is a heap entry to warn us when the latency is payed
 111  * MAX_DURATION =this is a heap entry to warn us when the max_duration limit is reached
 112  */
 113 static void heap_insert(surf_action_network_CM02_im_t    action, double key, enum heap_action_type hat){
 114   action->hat = hat;
 115   xbt_heap_push(im_net_action_heap, action, key);
 116 }
 117
 118 static void heap_remove(surf_action_network_CM02_im_t action){
 119   action->hat = NONE;
 120   if(((surf_action_network_CM02_im_t) action)->index_heap >= 0){
 121       xbt_heap_remove(im_net_action_heap,action->index_heap);
 122   }
 123 }
 124
 125 /******************************************************************************/
 126 /*                           Factors callbacks                                */
 127 /******************************************************************************/
 128 static double im_constant_latency_factor(double size)
 129 {
 130   return sg_latency_factor;
 131 }
 132
 133 static double im_constant_bandwidth_factor(double size)
 134 {
 135   return sg_bandwidth_factor;
 136 }
 137
 138 static double im_constant_bandwidth_constraint(double rate, double bound,
 139                                             double size)
 140 {
 141   return rate;
 142 }
 143
 144
 145 static double (*latency_factor_callback) (double) =
 146     &im_constant_latency_factor;
 147 static double (*bandwidth_factor_callback) (double) =
 148     &im_constant_bandwidth_factor;
 149 static double (*bandwidth_constraint_callback) (double, double, double) =
 150     &im_constant_bandwidth_constraint;
 151
 152
 153 static link_CM02_im_t im_net_link_new(char *name,
 154                                 double bw_initial,
 155                                 tmgr_trace_t bw_trace,
 156                                 double lat_initial,
 157                                 tmgr_trace_t lat_trace,
 158                                 e_surf_resource_state_t
 159                                 state_initial,
 160                                 tmgr_trace_t state_trace,
 161                                 e_surf_link_sharing_policy_t
 162                                 policy, xbt_dict_t properties)
 163 {
 164   link_CM02_im_t nw_link = (link_CM02_im_t)
 165       surf_resource_lmm_new(sizeof(s_link_CM02_im_t),
 166                             surf_network_model, name, properties,
 167                             network_maxmin_system,
 168                             sg_bandwidth_factor * bw_initial,
 169                             history,
 170                             state_initial, state_trace,
 171                             bw_initial, bw_trace);
 172
 173   xbt_assert1(!xbt_dict_get_or_null
 174               (surf_network_model->resource_set, name),
 175               "Link '%s' declared several times in the platform file.",
 176               name);
 177
 178   nw_link->lat_current = lat_initial;
 179   if (lat_trace)
 180     nw_link->lat_event =
 181         tmgr_history_add_trace(history, lat_trace, 0.0, 0, nw_link);
 182
 183   if (policy == SURF_LINK_FATPIPE)
 184     lmm_constraint_shared(nw_link->lmm_resource.constraint);
 185
 186   xbt_dict_set(surf_network_model->resource_set, name, nw_link,
 187                surf_resource_free);
 188
 189
 190   return nw_link;
 191 }
 192
 193 static void im_net_parse_link_init(void)
 194 {
 195   char *name_link;
 196   double bw_initial;
 197   tmgr_trace_t bw_trace;
 198   double lat_initial;
 199   tmgr_trace_t lat_trace;
 200   e_surf_resource_state_t state_initial_link = SURF_RESOURCE_ON;
 201   e_surf_link_sharing_policy_t policy_initial_link = SURF_LINK_SHARED;
 202   tmgr_trace_t state_trace;
 203   DEBUG0("link_CM02_im");
 204   name_link = xbt_strdup(A_surfxml_link_id);
 205   surf_parse_get_double(&bw_initial, A_surfxml_link_bandwidth);
 206   bw_trace = tmgr_trace_new(A_surfxml_link_bandwidth_file);
 207   surf_parse_get_double(&lat_initial, A_surfxml_link_latency);
 208   lat_trace = tmgr_trace_new(A_surfxml_link_latency_file);
 209
 210   xbt_assert0((A_surfxml_link_state == A_surfxml_link_state_ON)
 211               || (A_surfxml_link_state ==
 212                   A_surfxml_link_state_OFF), "Invalid state");
 213   if (A_surfxml_link_state == A_surfxml_link_state_ON)
 214     state_initial_link = SURF_RESOURCE_ON;
 215   else if (A_surfxml_link_state == A_surfxml_link_state_OFF)
 216     state_initial_link = SURF_RESOURCE_OFF;
 217
 218   if (A_surfxml_link_sharing_policy == A_surfxml_link_sharing_policy_SHARED)
 219     policy_initial_link = SURF_LINK_SHARED;
 220   else
 221           {
 222           if (A_surfxml_link_sharing_policy == A_surfxml_link_sharing_policy_FATPIPE)
 223                   policy_initial_link = SURF_LINK_FATPIPE;
 224           else if (A_surfxml_link_sharing_policy == A_surfxml_link_sharing_policy_FULLDUPLEX)
 225                   policy_initial_link = SURF_LINK_FULLDUPLEX;
 226           }
 227
 228   state_trace = tmgr_trace_new(A_surfxml_link_state_file);
 229
 230   if(policy_initial_link == SURF_LINK_FULLDUPLEX)
 231   {
 232           im_net_link_new(bprintf("%s_UP",name_link), bw_initial, bw_trace,
 233                        lat_initial, lat_trace, state_initial_link, state_trace,
 234                        policy_initial_link, xbt_dict_new());
 235           im_net_link_new(bprintf("%s_DOWN",name_link), bw_initial, bw_trace,
 236                        lat_initial, lat_trace, state_initial_link, state_trace,
 237                        policy_initial_link, xbt_dict_new());
 238   }
 239   else
 240   {
 241           im_net_link_new(name_link, bw_initial, bw_trace,
 242                        lat_initial, lat_trace, state_initial_link, state_trace,
 243                        policy_initial_link, xbt_dict_new());
 244   }
 245
 246 }
 247
 248 static void im_net_create_resource(char *name,
 249                                 double bw_initial,
 250                                 tmgr_trace_t bw_trace,
 251                                 double lat_initial,
 252                                 tmgr_trace_t lat_trace,
 253                                 e_surf_resource_state_t
 254                                 state_initial,
 255                                 tmgr_trace_t state_trace,
 256                                 e_surf_link_sharing_policy_t policy,
 257                                 xbt_dict_t properties)
 258 {
 259   im_net_link_new(name, bw_initial, bw_trace,
 260                lat_initial, lat_trace, state_initial, state_trace,
 261                policy, xbt_dict_new());
 262 }
 263
 264 static void im_net_add_traces(void)
 265 {
 266   xbt_dict_cursor_t cursor = NULL;
 267   char *trace_name, *elm;
 268
 269   static int called = 0;
 270   if (called)
 271     return;
 272   called = 1;
 273
 274   /* connect all traces relative to network */
 275   xbt_dict_foreach(trace_connect_list_link_avail, cursor, trace_name, elm) {
 276     tmgr_trace_t trace = xbt_dict_get_or_null(traces_set_list, trace_name);
 277     link_CM02_im_t link =
 278         xbt_dict_get_or_null(surf_network_model->resource_set, elm);
 279
 280     xbt_assert2(link, "Cannot connect trace %s to link %s: link undefined",
 281                 trace_name, elm);
 282     xbt_assert2(trace,
 283                 "Cannot connect trace %s to link %s: trace undefined",
 284                 trace_name, elm);
 285
 286     link->lmm_resource.state_event =
 287         tmgr_history_add_trace(history, trace, 0.0, 0, link);
 288   }
 289
 290   xbt_dict_foreach(trace_connect_list_bandwidth, cursor, trace_name, elm) {
 291     tmgr_trace_t trace = xbt_dict_get_or_null(traces_set_list, trace_name);
 292     link_CM02_im_t link =
 293         xbt_dict_get_or_null(surf_network_model->resource_set, elm);
 294
 295     xbt_assert2(link, "Cannot connect trace %s to link %s: link undefined",
 296                 trace_name, elm);
 297     xbt_assert2(trace,
 298                 "Cannot connect trace %s to link %s: trace undefined",
 299                 trace_name, elm);
 300
 301     link->lmm_resource.power.event =
 302         tmgr_history_add_trace(history, trace, 0.0, 0, link);
 303   }
 304
 305   xbt_dict_foreach(trace_connect_list_latency, cursor, trace_name, elm) {
 306     tmgr_trace_t trace = xbt_dict_get_or_null(traces_set_list, trace_name);
 307     link_CM02_im_t link =
 308         xbt_dict_get_or_null(surf_network_model->resource_set, elm);
 309
 310     xbt_assert2(link, "Cannot connect trace %s to link %s: link undefined",
 311                 trace_name, elm);
 312     xbt_assert2(trace,
 313                 "Cannot connect trace %s to link %s: trace undefined",
 314                 trace_name, elm);
 315
 316     link->lat_event = tmgr_history_add_trace(history, trace, 0.0, 0, link);
 317   }
 318 }
 319
 320 static void im_net_define_callbacks(const char *file)
 321 {
 322   /* Figuring out the network links */
 323   surfxml_add_callback(STag_surfxml_link_cb_list, &im_net_parse_link_init);
 324   surfxml_add_callback(ETag_surfxml_platform_cb_list, &im_net_add_traces);
 325 }
 326
 327 static int im_net_resource_used(void *resource_id)
 328 {
 329   return lmm_constraint_used(network_maxmin_system,
 330                              ((surf_resource_lmm_t)
 331                               resource_id)->constraint);
 332 }
 333
 334 static int im_net_action_unref(surf_action_t action)
 335 {
 336   action->refcount--;
 337   if (!action->refcount) {
 338     xbt_swag_remove(action, action->state_set);
 339     if (((surf_action_network_CM02_im_t) action)->variable){
 340       lmm_variable_free(network_maxmin_system,
 341                         ((surf_action_network_CM02_im_t) action)->variable);
 342     }
 343     // remove action from the heap
 344     heap_remove((surf_action_network_CM02_im_t) action);
 345
 346     xbt_swag_remove(action, im_net_modified_set);
 347 #ifdef HAVE_TRACING
 348     xbt_free(((surf_action_network_CM02_im_t) action)->src_name);
 349     xbt_free(((surf_action_network_CM02_im_t) action)->dst_name);
 350     if (action->category)
 351       xbt_free(action->category);
 352 #endif
 353     free(action);
 354     action = NULL;
 355     return 1;
 356   }
 357   return 0;
 358 }
 359
 360
 361
 362 static void im_net_action_cancel(surf_action_t action)
 363 {
 364   surf_network_model->action_state_set(action, SURF_ACTION_FAILED);
 365
 366   xbt_swag_remove(action, im_net_modified_set);
 367   // remove action from the heap
 368   heap_remove((surf_action_network_CM02_im_t) action);
 369 }
 370
 371 void im_net_action_recycle(surf_action_t action)
 372 {
 373   return;
 374 }
 375
 376 #ifdef HAVE_LATENCY_BOUND_TRACKING
 377 int im_net_get_link_latency_limited(surf_action_t action)
 378 {
 379   return action->latency_limited;
 380 }
 381 #endif
 382
 383 double im_net_action_get_remains(surf_action_t action)
 384 {
 385   /* update remains before return it */
 386   update_action_remaining(surf_get_clock());
 387   return action->remains;
 388 }
 389
 390 static void update_action_remaining(double now){
 391   surf_action_network_CM02_im_t action = NULL;
 392   double delta = 0.0;
 393
 394   xbt_swag_foreach(action, im_net_modified_set) {
 395
 396     if(action->suspended != 0){
 397         continue;
 398     }
 399
 400     delta = now - action->last_update;
 401
 402     double_update(&(action->generic_action.remains),
 403                   lmm_variable_getvalue(action->variable) * delta);
 404
 405     if (action->generic_action.max_duration != NO_MAX_DURATION)
 406       double_update(&(action->generic_action.max_duration), delta);
 407
 408     if ((action->generic_action.remains <= 0) &&
 409         (lmm_get_variable_weight(action->variable) > 0)) {
 410       action->generic_action.finish = surf_get_clock();
 411       surf_network_model->action_state_set((surf_action_t) action,
 412                                            SURF_ACTION_DONE);
 413       heap_remove(action);
 414     } else if ((action->generic_action.max_duration != NO_MAX_DURATION)
 415                && (action->generic_action.max_duration <= 0)) {
 416       action->generic_action.finish = surf_get_clock();
 417       surf_network_model->action_state_set((surf_action_t) action,
 418                                            SURF_ACTION_DONE);
 419       heap_remove(action);
 420     }
 421
 422     action->last_update = now;
 423   }
 424 }
 425
 426 static double im_net_share_resources(double now)
 427 {
 428   surf_action_network_CM02_im_t action = NULL;
 429   double min=-1;
 430   double value;
 431
 432   DEBUG1("Before share resources, the size of modified actions set is %d", xbt_swag_size(im_net_modified_set));
 433   update_action_remaining(now);
 434
 435   lmm_solve(network_maxmin_system);
 436
 437   DEBUG1("After share resources, The size of modified actions set is %d", xbt_swag_size(im_net_modified_set));
 438
 439    xbt_swag_foreach(action, im_net_modified_set) {
 440      if (GENERIC_ACTION(action).state_set != surf_network_model->states.running_action_set){
 441        continue;
 442      }
 443
 444      /* bogus priority, skip it */
 445      if (GENERIC_ACTION(action).priority <= 0){
 446          continue;
 447      }
 448
 449      min = -1;
 450      value = lmm_variable_getvalue(action->variable);
 451      if (value > 0) {
 452          if (GENERIC_ACTION(action).remains > 0) {
 453              value = GENERIC_ACTION(action).remains / value;
 454              min = now + value;
 455          } else {
 456              value = 0.0;
 457              min = now;
 458          }
 459      }
 460
 461      if ((GENERIC_ACTION(action).max_duration != NO_MAX_DURATION)
 462          && (min == -1
 463              || GENERIC_ACTION(action).start +
 464              GENERIC_ACTION(action).max_duration < min)){
 465        min =   GENERIC_ACTION(action).start +
 466                GENERIC_ACTION(action).max_duration;
 467      }
 468
 469      DEBUG4("Action(%p) Start %lf Finish %lf Max_duration %lf", action,
 470                 GENERIC_ACTION(action).start, now + value,
 471                 GENERIC_ACTION(action).max_duration);
 472
 473
 474
 475      if (action->index_heap >= 0) {
 476          heap_remove((surf_action_network_CM02_im_t) action);
 477      }
 478
 479      if (min != -1) {
 480          heap_insert((surf_action_network_CM02_im_t) action, min, NORMAL);
 481          DEBUG3("Insert at heap action(%p) min %lf now %lf", action, min, now);
 482      }
 483    }
 484
 485    //hereafter must have already the min value for this resource model
 486    if(xbt_heap_size(im_net_action_heap) > 0 ){
 487        min = xbt_heap_maxkey(im_net_action_heap) - now ;
 488    }else{
 489        min = -1;
 490    }
 491
 492    DEBUG1("The minimum with the HEAP %lf", min);
 493
 494
 495   return min;
 496 }
 497
 498 static void im_net_update_actions_state(double now, double delta)
 499 {
 500   surf_action_network_CM02_im_t action = NULL;
 501
 502   while ((xbt_heap_size(im_net_action_heap) > 0)
 503          && (double_equals(xbt_heap_maxkey(im_net_action_heap), now))) {
 504     action = xbt_heap_pop(im_net_action_heap);
 505     DEBUG1("Action %p: finish", action);
 506     GENERIC_ACTION(action).finish = surf_get_clock();
 507
 508     // if I am wearing a latency heat
 509     if( action->hat ==  LATENCY){
 510         lmm_update_variable_weight(network_maxmin_system, action->variable,
 511                                            action->weight);
 512         heap_remove(action);
 513         action->last_update = surf_get_clock();
 514
 515         DEBUG1("Action (%p) is not limited by latency anymore", action);
 516 #ifdef HAVE_LATENCY_BOUND_TRACKING
 517           GENERIC_ACTION(action).latency_limited = 0;
 518 #endif
 519
 520     // if I am wearing a max_duration or normal hat
 521     }else if( action->hat == MAX_DURATION || action->hat == NORMAL ){
 522         // no need to communicate anymore
 523         // assume that flows that reached max_duration have remaining of 0
 524         GENERIC_ACTION(action).remains = 0;
 525         action->generic_action.finish = surf_get_clock();
 526               surf_network_model->action_state_set((surf_action_t) action,
 527                                                    SURF_ACTION_DONE);
 528         heap_remove(action);
 529     }
 530   }
 531   return;
 532 }
 533
 534 static void im_net_update_resource_state(void *id,
 535                                       tmgr_trace_event_t event_type,
 536                                       double value, double date)
 537 {
 538   link_CM02_im_t nw_link = id;
 539   /*   printf("[" "%lg" "] Asking to update network card \"%s\" with value " */
 540   /*     "%lg" " for event %p\n", surf_get_clock(), nw_link->name, */
 541   /*     value, event_type); */
 542
 543   if (event_type == nw_link->lmm_resource.power.event) {
 544     double delta =
 545         sg_weight_S_parameter / value - sg_weight_S_parameter /
 546         (nw_link->lmm_resource.power.peak *
 547          nw_link->lmm_resource.power.scale);
 548     lmm_variable_t var = NULL;
 549     lmm_element_t elem = NULL;
 550     surf_action_network_CM02_im_t action = NULL;
 551
 552     nw_link->lmm_resource.power.peak = value;
 553     lmm_update_constraint_bound(network_maxmin_system,
 554                                 nw_link->lmm_resource.constraint,
 555                                 sg_bandwidth_factor *
 556                                 (nw_link->lmm_resource.power.peak *
 557                                  nw_link->lmm_resource.power.scale));
 558 #ifdef HAVE_TRACING
 559     TRACE_surf_link_set_bandwidth(date, (char *)(((nw_link->lmm_resource).generic_resource).name),
 560                                   sg_bandwidth_factor *
 561                                   (nw_link->lmm_resource.power.peak *
 562                                    nw_link->lmm_resource.power.scale));
 563 #endif
 564     if (sg_weight_S_parameter > 0) {
 565       while ((var = lmm_get_var_from_cnst
 566               (network_maxmin_system, nw_link->lmm_resource.constraint,
 567                &elem))) {
 568         action = lmm_variable_id(var);
 569         action->weight += delta;
 570         if (!(action->suspended))
 571           lmm_update_variable_weight(network_maxmin_system,
 572                                      action->variable, action->weight);
 573       }
 574     }
 575     if (tmgr_trace_event_free(event_type))
 576       nw_link->lmm_resource.power.event = NULL;
 577   } else if (event_type == nw_link->lat_event) {
 578     double delta = value - nw_link->lat_current;
 579     lmm_variable_t var = NULL;
 580     lmm_element_t elem = NULL;
 581     surf_action_network_CM02_im_t action = NULL;
 582
 583     nw_link->lat_current = value;
 584     while ((var = lmm_get_var_from_cnst
 585             (network_maxmin_system, nw_link->lmm_resource.constraint,
 586              &elem))) {
 587       action = lmm_variable_id(var);
 588       action->lat_current += delta;
 589       action->weight += delta;
 590       if (action->rate < 0)
 591         lmm_update_variable_bound(network_maxmin_system, action->variable,
 592                                   sg_tcp_gamma / (2.0 *
 593                                                   action->lat_current));
 594       else {
 595         lmm_update_variable_bound(network_maxmin_system, action->variable,
 596                                   min(action->rate,
 597                                       sg_tcp_gamma / (2.0 *
 598                                                       action->lat_current)));
 599
 600         if (action->rate < sg_tcp_gamma / (2.0 * action->lat_current)) {
 601           INFO0("Flow is limited BYBANDWIDTH");
 602         } else {
 603           INFO1("Flow is limited BYLATENCY, latency of flow is %f",
 604                 action->lat_current);
 605         }
 606       }
 607       if (!(action->suspended))
 608         lmm_update_variable_weight(network_maxmin_system, action->variable,
 609                                    action->weight);
 610
 611     }
 612     if (tmgr_trace_event_free(event_type))
 613       nw_link->lat_event = NULL;
 614   } else if (event_type == nw_link->lmm_resource.state_event) {
 615     if (value > 0)
 616       nw_link->lmm_resource.state_current = SURF_RESOURCE_ON;
 617     else {
 618       lmm_constraint_t cnst = nw_link->lmm_resource.constraint;
 619       lmm_variable_t var = NULL;
 620       lmm_element_t elem = NULL;
 621
 622       nw_link->lmm_resource.state_current = SURF_RESOURCE_OFF;
 623       while ((var = lmm_get_var_from_cnst
 624               (network_maxmin_system, cnst, &elem))) {
 625         surf_action_t action = lmm_variable_id(var);
 626
 627         if (surf_action_state_get(action) == SURF_ACTION_RUNNING ||
 628             surf_action_state_get(action) == SURF_ACTION_READY) {
 629           action->finish = date;
 630           surf_network_model->action_state_set(action, SURF_ACTION_FAILED);
 631         }
 632       }
 633     }
 634     if (tmgr_trace_event_free(event_type))
 635       nw_link->lmm_resource.state_event = NULL;
 636   } else {
 637     CRITICAL0("Unknown event ! \n");
 638     xbt_abort();
 639   }
 640
 641   DEBUG1("There were a resource state event, need to update actions related to the constraint (%p)", nw_link->lmm_resource.constraint);
 642   return;
 643 }
 644
 645
 646 static surf_action_t im_net_communicate(const char *src_name,
 647                                      const char *dst_name, double size,
 648                                      double rate)
 649 {
 650   unsigned int i;
 651   link_CM02_im_t link;
 652   int failed = 0;
 653   surf_action_network_CM02_im_t action = NULL;
 654   double bandwidth_bound;
 655   /* LARGE PLATFORMS HACK:
 656      Add a link_CM02_im_t *link and a int link_nb to network_card_CM02_im_t. It will represent local links for this node
 657      Use the cluster_id for ->id */
 658
 659   xbt_dynar_t back_route = NULL;
 660   int constraints_per_variable = 0;
 661   // I will need this route for some time so let's call get_route_no_cleanup
 662   xbt_dynar_t route = global_routing->get_route_no_cleanup(src_name, dst_name);
 663
 664
 665   if (sg_network_fullduplex == 1) {
 666     back_route = global_routing->get_route(dst_name, src_name);
 667   }
 668
 669   /* LARGE PLATFORMS HACK:
 670      total_route_size = route_size + src->link_nb + dst->nb */
 671
 672   XBT_IN4("(%s,%s,%g,%g)", src_name, dst_name, size, rate);
 673   /* LARGE PLATFORMS HACK:
 674      assert on total_route_size */
 675   xbt_assert2(xbt_dynar_length(route),
 676               "You're trying to send data from %s to %s but there is no connection between these two hosts.",
 677               src_name, dst_name);
 678
 679   xbt_dynar_foreach(route, i, link) {
 680     if (link->lmm_resource.state_current == SURF_RESOURCE_OFF) {
 681       failed = 1;
 682       break;
 683     }
 684   }
 685   action =
 686       surf_action_new(sizeof(s_surf_action_network_CM02_im_t), size,
 687                       surf_network_model, failed);
 688
 689
 690 #ifdef HAVE_LATENCY_BOUND_TRACKING
 691   (action->generic_action).latency_limited = 0;
 692 #endif
 693
 694   xbt_swag_insert(action, action->generic_action.state_set);
 695   action->rate = rate;
 696   action->index_heap = -1;
 697   action->latency = 0.0;
 698   action->weight = 0.0;
 699   action->last_update = surf_get_clock();
 700
 701   bandwidth_bound = -1.0;
 702   xbt_dynar_foreach(route, i, link) {
 703     action->latency += link->lat_current;
 704     action->weight +=
 705         link->lat_current +
 706         sg_weight_S_parameter /
 707         (link->lmm_resource.power.peak * link->lmm_resource.power.scale);
 708     if (bandwidth_bound < 0.0)
 709       bandwidth_bound =
 710           (*bandwidth_factor_callback) (size) *
 711           (link->lmm_resource.power.peak * link->lmm_resource.power.scale);
 712     else
 713       bandwidth_bound =
 714           min(bandwidth_bound,
 715               (*bandwidth_factor_callback) (size) *
 716               (link->lmm_resource.power.peak *
 717                link->lmm_resource.power.scale));
 718   }
 719   /* LARGE PLATFORMS HACK:
 720      Add src->link and dst->link latencies */
 721   action->lat_current = action->latency;
 722   action->latency *= (*latency_factor_callback) (size);
 723   action->rate =
 724       (*bandwidth_constraint_callback) (action->rate, bandwidth_bound,
 725                                         size);
 726
 727   /* LARGE PLATFORMS HACK:
 728      lmm_variable_new(..., total_route_size) */
 729   if (back_route != NULL) {
 730     constraints_per_variable =
 731         xbt_dynar_length(route) + xbt_dynar_length(back_route);
 732   } else {
 733     constraints_per_variable = xbt_dynar_length(route);
 734   }
 735
 736   if (action->latency > 0){
 737       action->variable =
 738         lmm_variable_new(network_maxmin_system, action, 0.0, -1.0,
 739                          constraints_per_variable);
 740     // add to the heap the event when the latency is payed
 741     DEBUG2("Added action (%p) one latency event at date %f", action, action->latency + action->last_update);
 742     heap_insert(action, action->latency + action->last_update, LATENCY);
 743 #ifdef HAVE_LATENCY_BOUND_TRACKING
 744         (action->generic_action).latency_limited = 1;
 745 #endif
 746   }
 747   else
 748     action->variable =
 749         lmm_variable_new(network_maxmin_system, action, 1.0, -1.0,
 750                          constraints_per_variable);
 751
 752   if (action->rate < 0) {
 753     if (action->lat_current > 0)
 754       lmm_update_variable_bound(network_maxmin_system, action->variable,
 755                                 sg_tcp_gamma / (2.0 *
 756                                                 action->lat_current));
 757     else
 758       lmm_update_variable_bound(network_maxmin_system, action->variable,
 759                                 -1.0);
 760   } else {
 761     if (action->lat_current > 0)
 762       lmm_update_variable_bound(network_maxmin_system, action->variable,
 763                                 min(action->rate,
 764                                     sg_tcp_gamma / (2.0 *
 765                                                     action->lat_current)));
 766     else
 767       lmm_update_variable_bound(network_maxmin_system, action->variable,
 768                                 action->rate);
 769   }
 770
 771   xbt_dynar_foreach(route, i, link) {
 772     lmm_expand(network_maxmin_system, link->lmm_resource.constraint,
 773                action->variable, 1.0);
 774   }
 775
 776   if (sg_network_fullduplex == 1) {
 777     DEBUG1("Fullduplex active adding backward flow using 5%c", '%');
 778     xbt_dynar_foreach(back_route, i, link) {
 779       lmm_expand(network_maxmin_system, link->lmm_resource.constraint,
 780                  action->variable, .05);
 781     }
 782   }
 783
 784   /* LARGE PLATFORMS HACK:
 785      expand also with src->link and dst->link */
 786 #ifdef HAVE_TRACING
 787   action->src_name = xbt_new(char, strlen(src_name) + 1);
 788   strncpy(action->src_name, src_name, strlen(src_name) + 1);
 789
 790   action->dst_name = xbt_new(char, strlen(dst_name) + 1);
 791   strncpy(action->dst_name, dst_name, strlen(dst_name) + 1);
 792 #endif
 793
 794   xbt_dynar_free(&route);
 795   XBT_OUT;
 796
 797   return (surf_action_t) action;
 798 }
 799
 800 static xbt_dynar_t im_net_get_route(const char *src, const char *dst)
 801 {
 802   return global_routing->get_route(src, dst);
 803 }
 804
 805 static double im_net_get_link_bandwidth(const void *link)
 806 {
 807   surf_resource_lmm_t lmm = (surf_resource_lmm_t) link;
 808   return lmm->power.peak * lmm->power.scale;
 809 }
 810
 811 static double im_net_get_link_latency(const void *link)
 812 {
 813   return ((link_CM02_im_t) link)->lat_current;
 814 }
 815
 816 static int im_net_link_shared(const void *link)
 817 {
 818   return
 819       lmm_constraint_is_shared(((surf_resource_lmm_t) link)->constraint);
 820 }
 821
 822 static void im_net_action_suspend(surf_action_t action)
 823 {
 824   ((surf_action_network_CM02_im_t) action)->suspended = 1;
 825   lmm_update_variable_weight(network_maxmin_system,
 826                              ((surf_action_network_CM02_im_t)
 827                               action)->variable, 0.0);
 828
 829   // remove action from the heap
 830   heap_remove((surf_action_network_CM02_im_t) action);
 831 }
 832
 833 static void im_net_action_resume(surf_action_t action)
 834 {
 835   if (((surf_action_network_CM02_im_t) action)->suspended) {
 836     lmm_update_variable_weight(network_maxmin_system,
 837                                ((surf_action_network_CM02_im_t)
 838                                 action)->variable,
 839                                ((surf_action_network_CM02_im_t)
 840                                 action)->weight);
 841     ((surf_action_network_CM02_im_t) action)->suspended = 0;
 842     // remove action from the heap
 843     heap_remove((surf_action_network_CM02_im_t) action);
 844   }
 845 }
 846
 847 static int im_net_action_is_suspended(surf_action_t action)
 848 {
 849   return ((surf_action_network_CM02_im_t) action)->suspended;
 850 }
 851
 852 void im_net_action_set_max_duration(surf_action_t action, double duration)
 853 {
 854   action->max_duration = duration;
 855   // remove action from the heap
 856   heap_remove((surf_action_network_CM02_im_t) action);
 857 }
 858
 859
 860 static void im_net_finalize(void)
 861 {
 862   surf_model_exit(surf_network_model);
 863   surf_network_model = NULL;
 864
 865   global_routing->finalize();
 866
 867   lmm_system_free(network_maxmin_system);
 868   network_maxmin_system = NULL;
 869
 870   xbt_heap_free(im_net_action_heap);
 871   xbt_swag_free(im_net_modified_set);
 872
 873 }
 874
 875 static void im_surf_network_model_init_internal(void)
 876 {
 877   s_surf_action_network_CM02_im_t comm;
 878   INFO0("You are using the UNSAFE lazy management optimization, I hope you know what you are doing.");
 879   INFO0("====> For now this optimization is only available for LV08_im network model.");
 880
 881   surf_network_model = surf_model_init();
 882
 883   surf_network_model->name = "network";
 884   surf_network_model->action_unref = im_net_action_unref;
 885   surf_network_model->action_cancel = im_net_action_cancel;
 886   surf_network_model->action_recycle = im_net_action_recycle;
 887   surf_network_model->get_remains = im_net_action_get_remains;
 888 #ifdef HAVE_LATENCY_BOUND_TRACKING
 889   surf_network_model->get_latency_limited = im_net_get_link_latency_limited;
 890 #endif
 891
 892   surf_network_model->model_private->resource_used = im_net_resource_used;
 893   surf_network_model->model_private->share_resources = im_net_share_resources;
 894   surf_network_model->model_private->update_actions_state =
 895                   im_net_update_actions_state;
 896   surf_network_model->model_private->update_resource_state =
 897                   im_net_update_resource_state;
 898   surf_network_model->model_private->finalize = im_net_finalize;
 899
 900   surf_network_model->suspend = im_net_action_suspend;
 901   surf_network_model->resume = im_net_action_resume;
 902   surf_network_model->is_suspended = im_net_action_is_suspended;
 903   surf_cpu_model->set_max_duration = im_net_action_set_max_duration;
 904
 905   surf_network_model->extension.network.communicate = im_net_communicate;
 906   surf_network_model->extension.network.get_route = im_net_get_route;
 907   surf_network_model->extension.network.get_link_bandwidth =
 908                   im_net_get_link_bandwidth;
 909   surf_network_model->extension.network.get_link_latency =
 910                   im_net_get_link_latency;
 911   surf_network_model->extension.network.link_shared = im_net_link_shared;
 912   surf_network_model->extension.network.add_traces = im_net_add_traces;
 913   surf_network_model->extension.network.create_resource =
 914                   im_net_create_resource;
 915
 916
 917   if (!network_maxmin_system){
 918         sg_maxmin_selective_update = 1;
 919     network_maxmin_system = lmm_system_new();
 920   }
 921   im_net_action_heap = xbt_heap_new(8,NULL);
 922
 923   xbt_heap_set_update_callback(im_net_action_heap, im_net_action_update_index_heap);
 924
 925   routing_model_create(sizeof(link_CM02_im_t),        im_net_link_new(xbt_strdup("__loopback__"),
 926                                                                       498000000, NULL, 0.000015, NULL,
 927                                                                       SURF_RESOURCE_ON, NULL,
 928                                                                       SURF_LINK_FATPIPE, NULL),
 929                               im_net_get_link_latency);
 930   im_net_modified_set =
 931       xbt_swag_new(xbt_swag_offset(comm, action_list_hookup));
 932   keep_track = im_net_modified_set;
 933 }
 934
 935
 936
 937 /************************************************************************/
 938 /* New model based on optimizations discussed during this thesis        */
 939 /************************************************************************/
 940 void im_surf_network_model_init_LegrandVelho(const char *filename)
 941 {
 942
 943   if (surf_network_model)
 944     return;
 945   im_surf_network_model_init_internal();
 946   im_net_define_callbacks(filename);
 947   xbt_dynar_push(model_list, &surf_network_model);
 948   network_solve = lmm_solve;
 949
 950   xbt_cfg_setdefault_double(_surf_cfg_set, "network/latency_factor", 10.4);
 951   xbt_cfg_setdefault_double(_surf_cfg_set, "network/bandwidth_factor",
 952                             0.92);
 953   xbt_cfg_setdefault_double(_surf_cfg_set, "network/weight_S", 8775);
 954
 955   update_model_description(surf_network_model_description,
 956                            "LV08_im", surf_network_model);
 957 }
 958
 959
 960