dragonfly-custom.C 133 KB
Newer Older
Nikhil's avatar
Nikhil committed
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
/*
 * Copyright (C) 2013 University of Chicago.
 * See COPYRIGHT notice in top-level directory.
 *
 */

#include <ross.h>

#define DEBUG_LP 892
#include "codes/jenkins-hash.h"
#include "codes/codes_mapping.h"
#include "codes/codes.h"
#include "codes/model-net.h"
#include "codes/model-net-method.h"
#include "codes/model-net-lp.h"
16
#include "codes/net/dragonfly-custom.h"
Nikhil's avatar
Nikhil committed
17 18 19
#include "sys/file.h"
#include "codes/quickhash.h"
#include "codes/rc-stack.h"
20 21
#include <vector>
#include <map>
22
#include <set>
Nikhil's avatar
Nikhil committed
23

24 25 26 27
#ifdef ENABLE_CORTEX
#include <cortex/cortex.h>
#include <cortex/topology.h>
#endif
Nikhil's avatar
Nikhil committed
28

29
#define DUMP_CONNECTIONS 0
30
#define CREDIT_SIZE 8
31
#define DFLY_HASH_TABLE_SIZE 4999
32 33 34

// debugging parameters
#define TRACK -1
35
#define TRACK_PKT -1
36 37 38 39 40 41 42 43
#define TRACK_MSG -1
#define DEBUG 0
#define MAX_STATS 65536

#define LP_CONFIG_NM_TERM (model_net_lp_config_names[DRAGONFLY_CUSTOM])
#define LP_METHOD_NM_TERM (model_net_method_names[DRAGONFLY_CUSTOM])
#define LP_CONFIG_NM_ROUT (model_net_lp_config_names[DRAGONFLY_CUSTOM_ROUTER])
#define LP_METHOD_NM_ROUT (model_net_method_names[DRAGONFLY_CUSTOM_ROUTER])
Nikhil's avatar
Nikhil committed
44 45 46 47 48 49 50 51

using namespace std;
struct Link {
  int offset, type;
};
struct bLink {
  int offset, dest;
};
52 53 54 55 56
/* Each entry in the vector is for a router id
 * against each router id, there is a map of links (key of the map is the dest
 * router id)
 * link has information on type (green or black) and offset (number of links
 * between that particular source and dest router ID)*/
Nikhil's avatar
Nikhil committed
57
vector< map< int, vector<Link> > > intraGroupLinks;
58 59
/* contains mapping between source router and destination group via link (link
 * has dest ID)*/
Nikhil's avatar
Nikhil committed
60
vector< map< int, vector<bLink> > > interGroupLinks;
61
/*MM: Maintains a list of routers connecting the source and destination groups */
Nikhil's avatar
Nikhil committed
62 63 64 65 66 67 68 69 70 71
vector< vector< vector<int> > > connectionList;

struct IntraGroupLink {
  int src, dest, type;
};

struct InterGroupLink {
  int src, dest;
};

72 73 74 75 76 77
#ifdef ENABLE_CORTEX
/* This structure is defined at the end of the file */
extern "C" {
extern cortex_topology dragonfly_custom_cortex_topology;
}
#endif
Nikhil's avatar
Nikhil committed
78

79 80 81
static int debug_slot_count = 0;
static long term_ecount, router_ecount, term_rev_ecount, router_rev_ecount;
static long packet_gen = 0, packet_fin = 0;
Nikhil's avatar
Nikhil committed
82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100

static double maxd(double a, double b) { return a < b ? b : a; }

/* minimal and non-minimal packet counts for adaptive routing*/
static int minimal_count=0, nonmin_count=0;
static int num_routers_per_mgrp = 0;

typedef struct dragonfly_param dragonfly_param;
/* annotation-specific parameters (unannotated entry occurs at the 
 * last index) */
static uint64_t                  num_params = 0;
static dragonfly_param         * all_params = NULL;
static const config_anno_map_t * anno_map   = NULL;

/* global variables for codes mapping */
static char lp_group_name[MAX_NAME_LENGTH];
static int mapping_grp_id, mapping_type_id, mapping_rep_id, mapping_offset;

/* router magic number */
101
static int router_magic_num = 0;
Nikhil's avatar
Nikhil committed
102 103

/* terminal magic number */
104
static int terminal_magic_num = 0;
Nikhil's avatar
Nikhil committed
105

106 107 108 109
/* Hops within a group */
static int num_intra_nonmin_hops = 4;
static int num_intra_min_hops = 2;

110
static FILE * dragonfly_log = NULL;
Nikhil's avatar
Nikhil committed
111

112 113
static int sample_bytes_written = 0;
static int sample_rtr_bytes_written = 0;
Nikhil's avatar
Nikhil committed
114

115 116
static char cn_sample_file[MAX_NAME_LENGTH];
static char router_sample_file[MAX_NAME_LENGTH];
Nikhil's avatar
Nikhil committed
117

118 119
//don't do overhead here - job of MPI layer
static tw_stime mpi_soft_overhead = 0;
120

121 122 123
typedef struct terminal_custom_message_list terminal_custom_message_list;
struct terminal_custom_message_list {
    terminal_custom_message msg;
Nikhil's avatar
Nikhil committed
124
    char* event_data;
125 126
    terminal_custom_message_list *next;
    terminal_custom_message_list *prev;
Nikhil's avatar
Nikhil committed
127 128
};

129
static void init_terminal_custom_message_list(terminal_custom_message_list *thisO, 
130
    terminal_custom_message *inmsg) {
131 132 133 134
    thisO->msg = *inmsg;
    thisO->event_data = NULL;
    thisO->next = NULL;
    thisO->prev = NULL;
Nikhil's avatar
Nikhil committed
135 136
}

137 138 139 140
static void delete_terminal_custom_message_list(void *thisO) {
    terminal_custom_message_list* toDel = (terminal_custom_message_list*)thisO;
    if(toDel->event_data != NULL) free(toDel->event_data);
    free(toDel);
Nikhil's avatar
Nikhil committed
141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156
}

struct dragonfly_param
{
    // configuration parameters
    int num_routers; /*Number of routers in a group*/
    double local_bandwidth;/* bandwidth of the router-router channels within a group */
    double global_bandwidth;/* bandwidth of the inter-group router connections */
    double cn_bandwidth;/* bandwidth of the compute node channels connected to routers */
    int num_vcs; /* number of virtual channels */
    int local_vc_size; /* buffer size of the router-router channels */
    int global_vc_size; /* buffer size of the global channels */
    int cn_vc_size; /* buffer size of the compute node channels */
    int chunk_size; /* full-sized packets are broken into smaller chunks.*/
    // derived parameters
    int num_cn;
157 158
    int intra_grp_radix;
    int num_col_chans;
159
    int num_row_chans;
160 161
    int num_router_rows;
    int num_router_cols;
Nikhil's avatar
Nikhil committed
162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231
    int num_groups;
    int radix;
    int total_routers;
    int total_terminals;
    int num_global_channels;
    double cn_delay;
    double local_delay;
    double global_delay;
    double credit_delay;
    double router_delay;
};

struct dfly_hash_key
{
    uint64_t message_id;
    tw_lpid sender_id;
};

struct dfly_router_sample
{
    tw_lpid router_id;
    tw_stime* busy_time;
    int64_t* link_traffic_sample;
    tw_stime end_time;
    long fwd_events;
    long rev_events;
};

struct dfly_cn_sample
{
   tw_lpid terminal_id;
   long fin_chunks_sample;
   long data_size_sample;
   double fin_hops_sample;
   tw_stime fin_chunks_time;
   tw_stime busy_time_sample;
   tw_stime end_time;
   long fwd_events;
   long rev_events;
};

struct dfly_qhash_entry
{
   struct dfly_hash_key key;
   char * remote_event_data;
   int num_chunks;
   int remote_event_size;
   struct qhash_head hash_link;
};

/* handles terminal and router events like packet generate/send/receive/buffer */
typedef struct terminal_state terminal_state;
typedef struct router_state router_state;

/* dragonfly compute node data structure */
struct terminal_state
{
   uint64_t packet_counter;

   int packet_gen;
   int packet_fin;

   // Dragonfly specific parameters
   unsigned int router_id;
   unsigned int terminal_id;

   // Each terminal will have an input and output channel with the router
   int* vc_occupancy; // NUM_VC
   int num_vcs;
   tw_stime terminal_available_time;
232 233
   terminal_custom_message_list **terminal_msgs;
   terminal_custom_message_list **terminal_msgs_tail;
Nikhil's avatar
Nikhil committed
234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253
   int in_send_loop;
   struct mn_stats dragonfly_stats_array[CATEGORY_MAX];

   struct rc_stack * st;
   int issueIdle;
   int terminal_length;

   const char * anno;
   const dragonfly_param *params;

   struct qhash_table *rank_tbl;
   uint64_t rank_tbl_pop;

   tw_stime   total_time;
   uint64_t total_msg_size;
   double total_hops;
   long finished_msgs;
   long finished_chunks;
   long finished_packets;

254
   tw_stime * last_buf_full;
Nikhil's avatar
Nikhil committed
255
   tw_stime busy_time;
256 257 258 259
   
   tw_stime max_latency;
   tw_stime min_latency;

Nikhil's avatar
Nikhil committed
260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278
   char output_buf[4096];
   /* For LP suspend functionality */
   int error_ct;

   /* For sampling */
   long fin_chunks_sample;
   long data_size_sample;
   double fin_hops_sample;
   tw_stime fin_chunks_time;
   tw_stime busy_time_sample;

   char sample_buf[4096];
   struct dfly_cn_sample * sample_stat;
   int op_arr_size;
   int max_arr_size;
   
   /* for logging forward and reverse events */
   long fwd_events;
   long rev_events;
279 280 281 282 283 284 285 286

   /* following used for ROSS model-level stats collection */
   long fin_chunks_ross_sample;
   long data_size_ross_sample;
   long fin_hops_ross_sample;
   tw_stime fin_chunks_time_ross_sample;
   tw_stime busy_time_ross_sample;
   struct dfly_cn_sample ross_sample;
Nikhil's avatar
Nikhil committed
287 288 289
};

/* terminal event type (1-4) */
290
typedef enum event_t
Nikhil's avatar
Nikhil committed
291 292 293 294 295 296 297 298
{
  T_GENERATE=1,
  T_ARRIVE,
  T_SEND,
  T_BUFFER,
  R_SEND,
  R_ARRIVE,
  R_BUFFER,
299
} event_t;
Nikhil's avatar
Nikhil committed
300 301 302 303

/* whether the last hop of a packet was global, local or a terminal */
enum last_hop
{
304
   GLOBAL=1,
Nikhil's avatar
Nikhil committed
305
   LOCAL,
306 307
   TERMINAL,
   ROOT
Nikhil's avatar
Nikhil committed
308 309 310 311 312 313 314
};

/* three forms of routing algorithms available, adaptive routing is not
 * accurate and fully functional in the current version as the formulas
 * for detecting load on global channels are not very accurate */
enum ROUTING_ALGO
{
315
    MINIMAL = 1,
Nikhil's avatar
Nikhil committed
316 317 318 319 320
    NON_MINIMAL,
    ADAPTIVE,
    PROG_ADAPTIVE
};

321 322 323 324 325
enum LINK_TYPE
{
    GREEN,
    BLACK,
};
Nikhil's avatar
Nikhil committed
326 327 328 329 330 331 332 333 334 335 336
struct router_state
{
   unsigned int router_id;
   int group_id;
   int op_arr_size;
   int max_arr_size;

   int* global_channel; 
   
   tw_stime* next_output_available_time;
   tw_stime* cur_hist_start_time;
337
   tw_stime** last_buf_full;
Nikhil's avatar
Nikhil committed
338 339 340 341

   tw_stime* busy_time;
   tw_stime* busy_time_sample;

342 343 344 345
   terminal_custom_message_list ***pending_msgs;
   terminal_custom_message_list ***pending_msgs_tail;
   terminal_custom_message_list ***queued_msgs;
   terminal_custom_message_list ***queued_msgs_tail;
Nikhil's avatar
Nikhil committed
346 347 348
   int *in_send_loop;
   int *queued_count;
   struct rc_stack * st;
349 350

   int* last_sent_chan;
Nikhil's avatar
Nikhil committed
351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367
   int** vc_occupancy;
   int64_t* link_traffic;
   int64_t * link_traffic_sample;

   const char * anno;
   const dragonfly_param *params;

   int* prev_hist_num;
   int* cur_hist_num;
   
   char output_buf[4096];
   char output_buf2[4096];

   struct dfly_router_sample * rsamples;
   
   long fwd_events;
   long rev_events;
368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403

   /* following used for ROSS model-level stats collection */
   tw_stime* busy_time_ross_sample;
   int64_t * link_traffic_ross_sample;
   struct dfly_router_sample ross_rsample;
};

/* had to pull some of the ROSS model stats collection stuff up here */
void custom_dragonfly_event_collect(terminal_custom_message *m, tw_lp *lp, char *buffer, int *collect_flag);
void custom_dragonfly_model_stat_collect(terminal_state *s, tw_lp *lp, char *buffer);
void custom_dfly_router_model_stat_collect(router_state *s, tw_lp *lp, char *buffer);
static void ross_custom_dragonfly_rsample_fn(router_state * s, tw_bf * bf, tw_lp * lp, struct dfly_router_sample *sample);
static void ross_custom_dragonfly_rsample_rc_fn(router_state * s, tw_bf * bf, tw_lp * lp, struct dfly_router_sample *sample);
static void ross_custom_dragonfly_sample_fn(terminal_state * s, tw_bf * bf, tw_lp * lp, struct dfly_cn_sample *sample);
static void ross_custom_dragonfly_sample_rc_fn(terminal_state * s, tw_bf * bf, tw_lp * lp, struct dfly_cn_sample *sample);

st_model_types custom_dragonfly_model_types[] = {
    {(rbev_trace_f) custom_dragonfly_event_collect,
     sizeof(int),
     (ev_trace_f) custom_dragonfly_event_collect,
     sizeof(int),
     (model_stat_f) custom_dragonfly_model_stat_collect,
     sizeof(tw_lpid) + sizeof(long) * 2 + sizeof(double) + sizeof(tw_stime) *2,
     (sample_event_f) ross_custom_dragonfly_sample_fn,
     (sample_revent_f) ross_custom_dragonfly_sample_rc_fn,
     sizeof(struct dfly_cn_sample) } , 
    {(rbev_trace_f) custom_dragonfly_event_collect,
     sizeof(int),
     (ev_trace_f) custom_dragonfly_event_collect,
     sizeof(int),
     (model_stat_f) custom_dfly_router_model_stat_collect,
     0, //updated in router_setup() since it's based on the radix
     (sample_event_f) ross_custom_dragonfly_rsample_fn,
     (sample_revent_f) ross_custom_dragonfly_rsample_rc_fn,
     0 } , //updated in router_setup() since it's based on the radix    
    {NULL, 0, NULL, 0, NULL, 0, NULL, NULL, 0}
Nikhil's avatar
Nikhil committed
404
};
405
/* End of ROSS model stats collection */
Nikhil's avatar
Nikhil committed
406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435

static short routing = MINIMAL;

static tw_stime         dragonfly_total_time = 0;
static tw_stime         dragonfly_max_latency = 0;


static long long       total_hops = 0;
static long long       N_finished_packets = 0;
static long long       total_msg_sz = 0;
static long long       N_finished_msgs = 0;
static long long       N_finished_chunks = 0;

static int dragonfly_rank_hash_compare(
        void *key, struct qhash_head *link)
{
    struct dfly_hash_key *message_key = (struct dfly_hash_key *)key;
    struct dfly_qhash_entry *tmp = NULL;

    tmp = qhash_entry(link, struct dfly_qhash_entry, hash_link);
    
    if (tmp->key.message_id == message_key->message_id
            && tmp->key.sender_id == message_key->sender_id)
        return 1;

    return 0;
}
static int dragonfly_hash_func(void *k, int table_size)
{
    struct dfly_hash_key *tmp = (struct dfly_hash_key *)k;
436 437 438 439
    uint32_t pc = 0, pb = 0;	
    bj_hashlittle2(tmp, sizeof(*tmp), &pc, &pb);
    return (int)(pc % (table_size - 1));
    /*uint64_t key = (~tmp->message_id) + (tmp->message_id << 18);
Nikhil's avatar
Nikhil committed
440 441 442
    key = key * 21;
    key = ~key ^ (tmp->sender_id >> 4);
    key = key * tmp->sender_id; 
443
    return (int)(key & (table_size - 1));*/
Nikhil's avatar
Nikhil committed
444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461
}

/* convert GiB/s and bytes to ns */
static tw_stime bytes_to_ns(uint64_t bytes, double GB_p_s)
{
    tw_stime time;

    /* bytes to GB */
    time = ((double)bytes)/(1024.0*1024.0*1024.0);
    /* GiB to s */
    time = time / GB_p_s;
    /* s to ns */
    time = time * 1000.0 * 1000.0 * 1000.0;

    return(time);
}

/* returns the dragonfly message size */
462
int dragonfly_custom_get_msg_sz(void)
Nikhil's avatar
Nikhil committed
463
{
464
	   return sizeof(terminal_custom_message);
Nikhil's avatar
Nikhil committed
465 466 467 468
}

static void free_tmp(void * ptr)
{
469
    struct dfly_qhash_entry * dfly = (dfly_qhash_entry *)ptr; 
470 471 472 473 474
    if(dfly->remote_event_data)
        free(dfly->remote_event_data);
   
    if(dfly)
        free(dfly);
Nikhil's avatar
Nikhil committed
475
}
476

477 478 479
static void append_to_terminal_custom_message_list(  
        terminal_custom_message_list ** thisq,
        terminal_custom_message_list ** thistail,
Nikhil's avatar
Nikhil committed
480
        int index, 
481
        terminal_custom_message_list *msg) {
Nikhil's avatar
Nikhil committed
482 483 484 485 486 487 488 489 490
    if(thisq[index] == NULL) {
        thisq[index] = msg;
    } else {
        thistail[index]->next = msg;
        msg->prev = thistail[index];
    } 
    thistail[index] = msg;
}

491 492 493
static void prepend_to_terminal_custom_message_list(  
        terminal_custom_message_list ** thisq,
        terminal_custom_message_list ** thistail,
Nikhil's avatar
Nikhil committed
494
        int index, 
495
        terminal_custom_message_list *msg) {
Nikhil's avatar
Nikhil committed
496 497 498 499 500 501 502 503 504
    if(thisq[index] == NULL) {
        thistail[index] = msg;
    } else {
        thisq[index]->prev = msg;
        msg->next = thisq[index];
    } 
    thisq[index] = msg;
}

505 506 507
static terminal_custom_message_list* return_head(
        terminal_custom_message_list ** thisq,
        terminal_custom_message_list ** thistail,
Nikhil's avatar
Nikhil committed
508
        int index) {
509
    terminal_custom_message_list *head = thisq[index];
Nikhil's avatar
Nikhil committed
510 511 512 513 514 515 516 517 518 519 520 521
    if(head != NULL) {
        thisq[index] = head->next;
        if(head->next != NULL) {
            head->next->prev = NULL;
            head->next = NULL;
        } else {
            thistail[index] = NULL;
        }
    }
    return head;
}

522 523 524
static terminal_custom_message_list* return_tail(
        terminal_custom_message_list ** thisq,
        terminal_custom_message_list ** thistail,
Nikhil's avatar
Nikhil committed
525
        int index) {
526
    terminal_custom_message_list *tail = thistail[index];
Nikhil's avatar
Nikhil committed
527 528 529 530 531 532 533 534 535 536 537 538 539
    assert(tail);
    if(tail->prev != NULL) {
        tail->prev->next = NULL;
        thistail[index] = tail->prev;
        tail->prev = NULL;
    } else {
        thistail[index] = NULL;
        thisq[index] = NULL;
    }
    return tail;
}

static void dragonfly_read_config(const char * anno, dragonfly_param *params){
540 541 542 543 544 545 546 547
    /*Adding init for router magic number*/
    uint32_t h1 = 0, h2 = 0; 
    bj_hashlittle2(LP_METHOD_NM_ROUT, strlen(LP_METHOD_NM_ROUT), &h1, &h2);
    router_magic_num = h1 + h2;
    
    bj_hashlittle2(LP_METHOD_NM_TERM, strlen(LP_METHOD_NM_TERM), &h1, &h2);
    terminal_magic_num = h1 + h2;
    
Nikhil's avatar
Nikhil committed
548 549
    // shorthand
    dragonfly_param *p = params;
Nikhil's avatar
Nikhil committed
550
    int myRank;
551
    MPI_Comm_rank(MPI_COMM_CODES, &myRank);
Nikhil's avatar
Nikhil committed
552

553
    int rc = configuration_get_value_int(&config, "PARAMS", "local_vc_size", anno, &p->local_vc_size);
Nikhil's avatar
Nikhil committed
554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594
    if(rc) {
        p->local_vc_size = 1024;
        fprintf(stderr, "Buffer size of local channels not specified, setting to %d\n", p->local_vc_size);
    }

    rc = configuration_get_value_int(&config, "PARAMS", "global_vc_size", anno, &p->global_vc_size);
    if(rc) {
        p->global_vc_size = 2048;
        fprintf(stderr, "Buffer size of global channels not specified, setting to %d\n", p->global_vc_size);
    }

    rc = configuration_get_value_int(&config, "PARAMS", "cn_vc_size", anno, &p->cn_vc_size);
    if(rc) {
        p->cn_vc_size = 1024;
        fprintf(stderr, "Buffer size of compute node channels not specified, setting to %d\n", p->cn_vc_size);
    }

    rc = configuration_get_value_int(&config, "PARAMS", "chunk_size", anno, &p->chunk_size);
    if(rc) {
        p->chunk_size = 512;
        fprintf(stderr, "Chunk size for packets is specified, setting to %d\n", p->chunk_size);
    }

    rc = configuration_get_value_double(&config, "PARAMS", "local_bandwidth", anno, &p->local_bandwidth);
    if(rc) {
        p->local_bandwidth = 5.25;
        fprintf(stderr, "Bandwidth of local channels not specified, setting to %lf\n", p->local_bandwidth);
    }

    rc = configuration_get_value_double(&config, "PARAMS", "global_bandwidth", anno, &p->global_bandwidth);
    if(rc) {
        p->global_bandwidth = 4.7;
        fprintf(stderr, "Bandwidth of global channels not specified, setting to %lf\n", p->global_bandwidth);
    }

    rc = configuration_get_value_double(&config, "PARAMS", "cn_bandwidth", anno, &p->cn_bandwidth);
    if(rc) {
        p->cn_bandwidth = 5.25;
        fprintf(stderr, "Bandwidth of compute node channels not specified, setting to %lf\n", p->cn_bandwidth);
    }

595
    rc = configuration_get_value_double(&config, "PARAMS", "router_delay", anno,
Nikhil's avatar
Nikhil committed
596
            &p->router_delay);
597
    if(rc) {
598 599
      p->router_delay = 100;
    }
Nikhil's avatar
Nikhil committed
600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616

    configuration_get_value(&config, "PARAMS", "cn_sample_file", anno, cn_sample_file,
            MAX_NAME_LENGTH);
    configuration_get_value(&config, "PARAMS", "rt_sample_file", anno, router_sample_file,
            MAX_NAME_LENGTH);
    
    char routing_str[MAX_NAME_LENGTH];
    configuration_get_value(&config, "PARAMS", "routing", anno, routing_str,
            MAX_NAME_LENGTH);
    if(strcmp(routing_str, "minimal") == 0)
        routing = MINIMAL;
    else if(strcmp(routing_str, "nonminimal")==0 || 
            strcmp(routing_str,"non-minimal")==0)
        routing = NON_MINIMAL;
    else if (strcmp(routing_str, "adaptive") == 0)
        routing = ADAPTIVE;
    else if (strcmp(routing_str, "prog-adaptive") == 0)
Nikhil's avatar
Nikhil committed
617
	      routing = PROG_ADAPTIVE;
Nikhil's avatar
Nikhil committed
618 619 620 621 622 623 624
    else
    {
        fprintf(stderr, 
                "No routing protocol specified, setting to minimal routing\n");
        routing = -1;
    }

625 626 627 628 629
    if(routing == PROG_ADAPTIVE)
        p->num_vcs = 10;
    else
        p->num_vcs = 8;
    
Nikhil's avatar
Nikhil committed
630 631 632
    rc = configuration_get_value_int(&config, "PARAMS", "num_groups", anno, &p->num_groups);
    if(rc) {
      printf("Number of groups not specified. Aborting");
633
      MPI_Abort(MPI_COMM_CODES, 1);
Nikhil's avatar
Nikhil committed
634
    }
635 636 637 638 639
    rc = configuration_get_value_int(&config, "PARAMS", "num_col_chans", anno, &p->num_col_chans);
    if(rc) {
//        printf("\n Number of links connecting chassis not specified, setting to default value 3 ");
        p->num_col_chans = 3;
    }
640 641 642 643 644
    rc = configuration_get_value_int(&config, "PARAMS", "num_row_chans", anno, &p->num_row_chans);
    if(rc) {
//        printf("\n Number of links connecting chassis not specified, setting to default value 3 ");
        p->num_row_chans = 1;
    }
645 646 647 648 649 650 651 652 653 654
    rc = configuration_get_value_int(&config, "PARAMS", "num_router_rows", anno, &p->num_router_rows);
    if(rc) {
        printf("\n Number of router rows not specified, setting to 6 ");
        p->num_router_rows = 6;
    }
    rc = configuration_get_value_int(&config, "PARAMS", "num_router_cols", anno, &p->num_router_cols);
    if(rc) {
        printf("\n Number of router columns not specified, setting to 16 ");
        p->num_router_cols = 16;
    }
655
    p->intra_grp_radix = (p->num_router_cols * p->num_row_chans) + (p->num_router_rows * p->num_col_chans);
656 657
    p->num_routers = p->num_router_rows * p->num_router_cols;
    
658
    rc = configuration_get_value_int(&config, "PARAMS", "num_cns_per_router", anno, &p->num_cn);
Nikhil's avatar
Nikhil committed
659
    if(rc) {
660 661
        printf("\n Number of cns per router not specified, setting to %d ", p->num_routers/2);
        p->num_cn = p->num_routers/2;
Nikhil's avatar
Nikhil committed
662
    }
663

664 665
    rc = configuration_get_value_int(&config, "PARAMS", "num_global_channels", anno, &p->num_global_channels);
    if(rc) {
666 667
        printf("\n Number of global channels per router not specified, setting to 10 ");
        p->num_global_channels = 10;
668
    }
669
    p->radix = (p->num_router_cols * p->num_row_chans) + (p->num_col_chans * p->num_router_rows) + p->num_global_channels + p->num_cn;
Nikhil's avatar
Nikhil committed
670 671
    p->total_routers = p->num_groups * p->num_routers;
    p->total_terminals = p->total_routers * p->num_cn;
Nikhil's avatar
Nikhil committed
672 673 674 675
    
    // read intra group connections, store from a router's perspective
    // all links to the same router form a vector
    char intraFile[MAX_NAME_LENGTH];
676
    configuration_get_value(&config, "PARAMS", "intra-group-connections", 
Nikhil's avatar
Nikhil committed
677
        anno, intraFile, MAX_NAME_LENGTH);
678 679
    if(strlen(intraFile) <= 0) {
      tw_error(TW_LOC, "Intra group connections file not specified. Aborting");
Nikhil's avatar
Nikhil committed
680 681
    }
    FILE *groupFile = fopen(intraFile, "rb");
682 683 684
    if(!groupFile)
        tw_error(TW_LOC, "intra-group file not found ");

Nikhil's avatar
Nikhil committed
685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706
    if(!myRank)
      printf("Reading intra-group connectivity file: %s\n", intraFile);

    {
      vector< int > offsets;
      offsets.resize(p->num_routers, 0);
      intraGroupLinks.resize(p->num_routers);
      IntraGroupLink newLink;

      while(fread(&newLink, sizeof(IntraGroupLink), 1, groupFile) != 0) {
        Link tmpLink;
        tmpLink.type = newLink.type;
        tmpLink.offset = offsets[newLink.src]++;
        intraGroupLinks[newLink.src][newLink.dest].push_back(tmpLink);
      }
    }

    fclose(groupFile);

    // read inter group connections, store from a router's perspective
    // also create a group level table that tells all the connecting routers
    char interFile[MAX_NAME_LENGTH];
707
    configuration_get_value(&config, "PARAMS", "inter-group-connections", 
Nikhil's avatar
Nikhil committed
708
        anno, interFile, MAX_NAME_LENGTH);
709 710
    if(strlen(interFile) <= 0) {
      tw_error(TW_LOC, "Inter group connections file not specified. Aborting");
Nikhil's avatar
Nikhil committed
711 712 713
    }
    FILE *systemFile = fopen(interFile, "rb");
    if(!myRank)
714
    {
Nikhil's avatar
Nikhil committed
715
      printf("Reading inter-group connectivity file: %s\n", interFile);
716 717
      printf("\n Total routers %d total groups %d ", p->total_routers, p->num_groups);
    }
Nikhil's avatar
Nikhil committed
718 719 720 721 722 723 724 725 726

    {
      vector< int > offsets;
      offsets.resize(p->total_routers, 0);
      interGroupLinks.resize(p->total_routers);
      connectionList.resize(p->num_groups);
      for(int g = 0; g < connectionList.size(); g++) {
        connectionList[g].resize(p->num_groups);
      }
727
      
Nikhil's avatar
Nikhil committed
728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748
      InterGroupLink newLink;

      while(fread(&newLink, sizeof(InterGroupLink), 1, systemFile) != 0) {
        bLink tmpLink;
        tmpLink.dest = newLink.dest;
        int srcG = newLink.src / p->num_routers;
        int destG = newLink.dest / p->num_routers;
        tmpLink.offset = offsets[newLink.src]++;
        interGroupLinks[newLink.src][destG].push_back(tmpLink);
        int r;
        for(r = 0; r < connectionList[srcG][destG].size(); r++) {
          if(connectionList[srcG][destG][r] == newLink.src) break;
        }
        if(r == connectionList[srcG][destG].size()) {
          connectionList[srcG][destG].push_back(newLink.src);
        }
      }
    }

    fclose(systemFile);

749
#if DUMP_CONNECTIONS == 1
Nikhil's avatar
Nikhil committed
750 751 752 753 754 755 756 757
    printf("Dumping intra-group connections\n");
    for(int a = 0; a < intraGroupLinks.size(); a++) {
      printf("Connections for router %d\n", a);
      map< int, vector<Link> >  &curMap = intraGroupLinks[a];
      map< int, vector<Link> >::iterator it = curMap.begin();
      for(; it != curMap.end(); it++) {
        printf(" ( %d - ", it->first);
        for(int l = 0; l < it->second.size(); l++) {
758
          // offset is number of local connections
759
          // type is black or green according to Cray architecture 
Nikhil's avatar
Nikhil committed
760 761 762 763 764 765 766
          printf("%d,%d ", it->second[l].offset, it->second[l].type);
        }
        printf(")");
      }
      printf("\n");
    }
#endif
767
#if DUMP_CONNECTIONS == 1
Nikhil's avatar
Nikhil committed
768 769 770
    printf("Dumping inter-group connections\n");
    for(int a = 0; a < interGroupLinks.size(); a++) {
      printf("Connections for router %d\n", a);
771 772
      map< int, vector<bLink> >  &curMap = interGroupLinks[a];
      map< int, vector<bLink> >::iterator it = curMap.begin();
Nikhil's avatar
Nikhil committed
773
      for(; it != curMap.end(); it++) {
774
        // dest group ID 
Nikhil's avatar
Nikhil committed
775 776
        printf(" ( %d - ", it->first);
        for(int l = 0; l < it->second.size(); l++) {
777 778
            // dest is dest router ID
            // offset is number of global connections
Nikhil's avatar
Nikhil committed
779 780 781 782 783 784 785 786
          printf("%d,%d ", it->second[l].offset, it->second[l].dest);
        }
        printf(")");
      }
      printf("\n");
    }
#endif

787
#if DUMP_CONNECTIONS == 1
Nikhil's avatar
Nikhil committed
788 789 790 791 792 793 794 795 796 797 798 799 800
    printf("Dumping source aries for global connections\n");
    for(int g = 0; g < p->num_groups; g++) {
      for(int g1 = 0; g1 < p->num_groups; g1++) {
        printf(" ( ");
        for(int l = 0; l < connectionList[g][g1].size(); l++) {
          printf("%d ", connectionList[g][g1][l]);
        }
        printf(")");
      }
      printf("\n");
    }
#endif
    if(!myRank) {
801
        printf("\n Total nodes %d routers %d groups %d routers per group %d radix %d\n",
Nikhil's avatar
Nikhil committed
802
                p->num_cn * p->total_routers, p->total_routers, p->num_groups,
803
                p->num_routers, p->radix);
Nikhil's avatar
Nikhil committed
804
    }
Nikhil's avatar
Nikhil committed
805

Nikhil's avatar
Nikhil committed
806 807 808
    p->cn_delay = bytes_to_ns(p->chunk_size, p->cn_bandwidth);
    p->local_delay = bytes_to_ns(p->chunk_size, p->local_bandwidth);
    p->global_delay = bytes_to_ns(p->chunk_size, p->global_bandwidth);
809
    p->credit_delay = bytes_to_ns(CREDIT_SIZE, p->local_bandwidth); //assume 8 bytes packet
Nikhil's avatar
Nikhil committed
810 811
}

812
void dragonfly_custom_configure(){
Nikhil's avatar
Nikhil committed
813 814 815
    anno_map = codes_mapping_get_lp_anno_map(LP_CONFIG_NM_TERM);
    assert(anno_map);
    num_params = anno_map->num_annos + (anno_map->has_unanno_lp > 0);
816
    all_params = (dragonfly_param *)malloc(num_params * sizeof(*all_params));
Nikhil's avatar
Nikhil committed
817 818 819 820 821 822 823 824

    for (int i = 0; i < anno_map->num_annos; i++){
        const char * anno = anno_map->annotations[i].ptr;
        dragonfly_read_config(anno, &all_params[i]);
    }
    if (anno_map->has_unanno_lp > 0){
        dragonfly_read_config(NULL, &all_params[anno_map->num_annos]);
    }
825 826 827
#ifdef ENABLE_CORTEX
	model_net_topology = dragonfly_custom_cortex_topology;
#endif
Nikhil's avatar
Nikhil committed
828 829 830
}

/* report dragonfly statistics like average and maximum packet latency, average number of hops traversed */
831
void dragonfly_custom_report_stats()
Nikhil's avatar
Nikhil committed
832 833 834 835 836 837 838
{
   long long avg_hops, total_finished_packets, total_finished_chunks;
   long long total_finished_msgs, final_msg_sz;
   tw_stime avg_time, max_time;
   int total_minimal_packets, total_nonmin_packets;
   long total_gen, total_fin;

839 840 841 842 843 844 845
   MPI_Reduce( &total_hops, &avg_hops, 1, MPI_LONG_LONG, MPI_SUM, 0, MPI_COMM_CODES);
   MPI_Reduce( &N_finished_packets, &total_finished_packets, 1, MPI_LONG_LONG, MPI_SUM, 0, MPI_COMM_CODES);
   MPI_Reduce( &N_finished_msgs, &total_finished_msgs, 1, MPI_LONG_LONG, MPI_SUM, 0, MPI_COMM_CODES);
   MPI_Reduce( &N_finished_chunks, &total_finished_chunks, 1, MPI_LONG_LONG, MPI_SUM, 0, MPI_COMM_CODES);
   MPI_Reduce( &total_msg_sz, &final_msg_sz, 1, MPI_LONG_LONG, MPI_SUM, 0, MPI_COMM_CODES);
   MPI_Reduce( &dragonfly_total_time, &avg_time, 1,MPI_DOUBLE, MPI_SUM, 0, MPI_COMM_CODES);
   MPI_Reduce( &dragonfly_max_latency, &max_time, 1, MPI_DOUBLE, MPI_MAX, 0, MPI_COMM_CODES);
Nikhil's avatar
Nikhil committed
846
   
847 848
   MPI_Reduce( &packet_gen, &total_gen, 1, MPI_LONG, MPI_SUM, 0, MPI_COMM_CODES);
   MPI_Reduce( &packet_fin, &total_fin, 1, MPI_LONG, MPI_SUM, 0, MPI_COMM_CODES);
Nikhil's avatar
Nikhil committed
849 850
   if(routing == ADAPTIVE || routing == PROG_ADAPTIVE)
    {
851 852
	MPI_Reduce(&minimal_count, &total_minimal_packets, 1, MPI_INT, MPI_SUM, 0, MPI_COMM_CODES);
 	MPI_Reduce(&nonmin_count, &total_nonmin_packets, 1, MPI_INT, MPI_SUM, 0, MPI_COMM_CODES);
Nikhil's avatar
Nikhil committed
853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871
    }

   /* print statistics */
   if(!g_tw_mynode)
   {	
      printf(" Average number of hops traversed %f average chunk latency %lf us maximum chunk latency %lf us avg message size %lf bytes finished messages %lld finished chunks %lld \n", 
              (float)avg_hops/total_finished_chunks, avg_time/(total_finished_chunks*1000), max_time/1000, (float)final_msg_sz/total_finished_msgs, total_finished_msgs, total_finished_chunks);
     if(routing == ADAPTIVE || routing == PROG_ADAPTIVE)
              printf("\n ADAPTIVE ROUTING STATS: %d chunks routed minimally %d chunks routed non-minimally completed packets %lld \n", 
                      total_minimal_packets, total_nonmin_packets, total_finished_chunks);
 
      printf("\n Total packets generated %ld finished %ld \n", total_gen, total_fin);
   }
   return;
}


/* initialize a dragonfly compute node terminal */
void 
872
terminal_custom_init( terminal_state * s, 
Nikhil's avatar
Nikhil committed
873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897
	       tw_lp * lp )
{
    s->packet_gen = 0;
    s->packet_fin = 0;

    int i;
    char anno[MAX_NAME_LENGTH];

    // Assign the global router ID
    // TODO: be annotation-aware
    codes_mapping_get_lp_info(lp->gid, lp_group_name, &mapping_grp_id, NULL,
            &mapping_type_id, anno, &mapping_rep_id, &mapping_offset);
    if (anno[0] == '\0'){
        s->anno = NULL;
        s->params = &all_params[num_params-1];
    }
    else{
        s->anno = strdup(anno);
        int id = configuration_get_annotation_index(anno, anno_map);
        s->params = &all_params[id];
    }

   int num_lps = codes_mapping_get_lp_count(lp_group_name, 1, LP_CONFIG_NM_TERM,
           s->anno, 0);

898
   s->terminal_id = codes_mapping_get_lp_relative_id(lp->gid, 0, 0);
899
   s->router_id=(int)s->terminal_id / (s->params->num_cn);
Nikhil's avatar
Nikhil committed
900 901
   s->terminal_available_time = 0.0;
   s->packet_counter = 0;
902 903 904
   s->min_latency = INT_MAX;
   s->max_latency = 0;   

Nikhil's avatar
Nikhil committed
905 906 907 908 909 910 911 912 913 914 915 916 917 918
   s->finished_msgs = 0;
   s->finished_chunks = 0;
   s->finished_packets = 0;
   s->total_time = 0.0;
   s->total_msg_size = 0;

   s->busy_time = 0.0;

   s->fwd_events = 0;
   s->rev_events = 0;

   rc_stack_create(&s->st);
   s->num_vcs = 1;
   s->vc_occupancy = (int*)malloc(s->num_vcs * sizeof(int));
919
   s->last_buf_full = (tw_stime*)malloc(s->num_vcs * sizeof(tw_stime));
Nikhil's avatar
Nikhil committed
920 921 922

   for( i = 0; i < s->num_vcs; i++ )
    {
923
      s->last_buf_full[i] = 0.0;
Nikhil's avatar
Nikhil committed
924 925 926 927
      s->vc_occupancy[i]=0;
    }


928
   s->rank_tbl = NULL;
Nikhil's avatar
Nikhil committed
929
   s->terminal_msgs = 
930
       (terminal_custom_message_list**)malloc(s->num_vcs*sizeof(terminal_custom_message_list*));
Nikhil's avatar
Nikhil committed
931
   s->terminal_msgs_tail = 
932
       (terminal_custom_message_list**)malloc(s->num_vcs*sizeof(terminal_custom_message_list*));
Nikhil's avatar
Nikhil committed
933 934 935 936 937 938 939 940 941 942 943
   s->terminal_msgs[0] = NULL;
   s->terminal_msgs_tail[0] = NULL;
   s->terminal_length = 0;
   s->in_send_loop = 0;
   s->issueIdle = 0;

   return;
}

/* sets up the router virtual channels, global channels, 
 * local channels, compute node channels */
944
void router_custom_setup(router_state * r, tw_lp * lp)
Nikhil's avatar
Nikhil committed
945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962
{
    
    char anno[MAX_NAME_LENGTH];
    codes_mapping_get_lp_info(lp->gid, lp_group_name, &mapping_grp_id, NULL,
            &mapping_type_id, anno, &mapping_rep_id, &mapping_offset);

    if (anno[0] == '\0'){
        r->anno = NULL;
        r->params = &all_params[num_params-1];
    } else{
        r->anno = strdup(anno);
        int id = configuration_get_annotation_index(anno, anno_map);
        r->params = &all_params[id];
    }

    // shorthand
    const dragonfly_param *p = r->params;

963
    num_routers_per_mgrp = codes_mapping_get_lp_count (lp_group_name, 1, "modelnet_dragonfly_custom_router",
Nikhil's avatar
Nikhil committed
964 965 966 967 968 969 970
            NULL, 0);
    int num_grp_reps = codes_mapping_get_group_reps(lp_group_name);
    if(p->total_routers != num_grp_reps * num_routers_per_mgrp)
        tw_error(TW_LOC, "\n Config error: num_routers specified %d total routers computed in the network %d "
                "does not match with repetitions * dragonfly_router %d  ",
                p->num_routers, p->total_routers, num_grp_reps * num_routers_per_mgrp);

971
   r->router_id = codes_mapping_get_lp_relative_id(lp->gid, 0, 0);
Nikhil's avatar
Nikhil committed
972
   r->group_id=r->router_id/p->num_routers;
973 974
    
   //printf("\n Local router id %d global id %d ", r->router_id, lp->gid);
Nikhil's avatar
Nikhil committed
975 976 977

   r->fwd_events = 0;
   r->rev_events = 0;
978 979
   r->ross_rsample.fwd_events = 0;
   r->ross_rsample.rev_events = 0;
Nikhil's avatar
Nikhil committed
980

981

Nikhil's avatar
Nikhil committed
982 983 984 985 986 987 988
   r->global_channel = (int*)malloc(p->num_global_channels * sizeof(int));
   r->next_output_available_time = (tw_stime*)malloc(p->radix * sizeof(tw_stime));
   r->cur_hist_start_time = (tw_stime*)malloc(p->radix * sizeof(tw_stime));
   r->link_traffic = (int64_t*)malloc(p->radix * sizeof(int64_t));
   r->link_traffic_sample = (int64_t*)malloc(p->radix * sizeof(int64_t));
   r->cur_hist_num = (int*)malloc(p->radix * sizeof(int));
   r->prev_hist_num = (int*)malloc(p->radix * sizeof(int));
989 990
  
   r->last_sent_chan = (int*) malloc(p->num_router_rows * sizeof(int));
Nikhil's avatar
Nikhil committed
991 992 993
   r->vc_occupancy = (int**)malloc(p->radix * sizeof(int*));
   r->in_send_loop = (int*)malloc(p->radix * sizeof(int));
   r->pending_msgs = 
994
    (terminal_custom_message_list***)malloc(p->radix * sizeof(terminal_custom_message_list**));
Nikhil's avatar
Nikhil committed
995
   r->pending_msgs_tail = 
996
    (terminal_custom_message_list***)malloc(p->radix * sizeof(terminal_custom_message_list**));
Nikhil's avatar
Nikhil committed
997
   r->queued_msgs = 
998
    (terminal_custom_message_list***)malloc(p->radix * sizeof(terminal_custom_message_list**));
Nikhil's avatar
Nikhil committed
999
   r->queued_msgs_tail = 
1000
    (terminal_custom_message_list***)malloc(p->radix * sizeof(terminal_custom_message_list**));
Nikhil's avatar
Nikhil committed
1001
   r->queued_count = (int*)malloc(p->radix * sizeof(int));
1002
   r->last_buf_full = (tw_stime**)malloc(p->radix * sizeof(tw_stime*));
Nikhil's avatar
Nikhil committed
1003 1004 1005
   r->busy_time = (tw_stime*)malloc(p->radix * sizeof(tw_stime));
   r->busy_time_sample = (tw_stime*)malloc(p->radix * sizeof(tw_stime));

1006 1007 1008 1009 1010 1011 1012 1013 1014 1015
   /* set up for ROSS stats sampling */
   r->link_traffic_ross_sample = (int64_t*)calloc(p->radix, sizeof(int64_t));
   r->busy_time_ross_sample = (tw_stime*)calloc(p->radix, sizeof(tw_stime));
   if (g_st_model_stats)
       lp->model_types->mstat_sz = sizeof(tw_lpid) + (sizeof(int64_t) + sizeof(tw_stime)) * p->radix;
   if (g_st_use_analysis_lps)
       lp->model_types->sample_struct_sz = sizeof(struct dfly_router_sample) + (sizeof(tw_stime) + sizeof(int64_t)) * p->radix;
   r->ross_rsample.busy_time = (tw_stime*)calloc(p->radix, sizeof(tw_stime));
   r->ross_rsample.link_traffic_sample = (int64_t*)calloc(p->radix, sizeof(int64_t));

Nikhil's avatar
Nikhil committed
1016
   rc_stack_create(&r->st);
1017 1018 1019 1020

   for(int i = 0; i < p->num_router_rows; i++)
       r->last_sent_chan[i] = 0;

Nikhil's avatar
Nikhil committed
1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034
   for(int i=0; i < p->radix; i++)
    {
       // Set credit & router occupancy
    r->busy_time[i] = 0.0;
    r->busy_time_sample[i] = 0.0;
	r->next_output_available_time[i]=0;
	r->cur_hist_start_time[i] = 0;
    r->link_traffic[i]=0;
    r->link_traffic_sample[i] = 0;
	r->cur_hist_num[i] = 0;
	r->prev_hist_num[i] = 0;
    r->queued_count[i] = 0;    
    r->in_send_loop[i] = 0;
    r->vc_occupancy[i] = (int*)malloc(p->num_vcs * sizeof(int));
1035 1036
    r->pending_msgs[i] = (terminal_custom_message_list**)malloc(p->num_vcs * 
        sizeof(terminal_custom_message_list*));
1037
    r->last_buf_full[i] = (tw_stime*)malloc(p->num_vcs * sizeof(tw_stime));
1038 1039 1040 1041 1042 1043
    r->pending_msgs_tail[i] = (terminal_custom_message_list**)malloc(p->num_vcs * 
        sizeof(terminal_custom_message_list*));
    r->queued_msgs[i] = (terminal_custom_message_list**)malloc(p->num_vcs * 
        sizeof(terminal_custom_message_list*));
    r->queued_msgs_tail[i] = (terminal_custom_message_list**)malloc(p->num_vcs * 
        sizeof(terminal_custom_message_list*));
Nikhil's avatar
Nikhil committed
1044
        for(int j = 0; j < p->num_vcs; j++) {
1045
            r->last_buf_full[i][j] = 0.0;
Nikhil's avatar
Nikhil committed
1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057
            r->vc_occupancy[i][j] = 0;
            r->pending_msgs[i][j] = NULL;
            r->pending_msgs_tail[i][j] = NULL;
            r->queued_msgs[i][j] = NULL;
            r->queued_msgs_tail[i][j] = NULL;
        }
    }
   return;
}	


/* dragonfly packet event , generates a dragonfly packet on the compute node */
1058
static tw_stime dragonfly_custom_packet_event(
Nikhil's avatar
Nikhil committed
1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072
        model_net_request const * req,
        uint64_t message_offset,
        uint64_t packet_size,
        tw_stime offset,
        mn_sched_params const * sched_params,
        void const * remote_event,
        void const * self_event,
        tw_lp *sender,
        int is_last_pckt)
{
    (void)message_offset;
    (void)sched_params;
    tw_event * e_new;
    tw_stime xfer_to_nic_time;
1073
    terminal_custom_message * msg;
Nikhil's avatar
Nikhil committed
1074 1075 1076 1077 1078 1079
    char* tmp_ptr;

    xfer_to_nic_time = codes_local_latency(sender); 
    //e_new = tw_event_new(sender->gid, xfer_to_nic_time+offset, sender);
    //msg = tw_event_data(e_new);
    e_new = model_net_method_event_new(sender->gid, xfer_to_nic_time+offset,
1080
            sender, DRAGONFLY_CUSTOM, (void**)&msg, (void**)&tmp_ptr);
Nikhil's avatar
Nikhil committed
1081 1082 1083 1084 1085 1086 1087 1088 1089 1090 1091 1092 1093 1094 1095 1096 1097 1098 1099
    strcpy(msg->category, req->category);
    msg->final_dest_gid = req->final_dest_lp;
    msg->total_size = req->msg_size;
    msg->sender_lp=req->src_lp;
    msg->sender_mn_lp = sender->gid;
    msg->packet_size = packet_size;
    msg->travel_start_time = tw_now(sender);
    msg->remote_event_size_bytes = 0;
    msg->local_event_size_bytes = 0;
    msg->type = T_GENERATE;
    msg->dest_terminal_id = req->dest_mn_lp;
    msg->message_id = req->msg_id;
    msg->is_pull = req->is_pull;
    msg->pull_size = req->pull_size;
    msg->magic = terminal_magic_num; 
    msg->msg_start_time = req->msg_start_time;

    if(is_last_pckt) /* Its the last packet so pass in remote and local event information*/
      {
1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 1110 1111
        if(req->remote_event_size > 0)
         {
            msg->remote_event_size_bytes = req->remote_event_size;
            memcpy(tmp_ptr, remote_event, req->remote_event_size);
            tmp_ptr += req->remote_event_size;
        }
        if(req->self_event_size > 0)
        {
            msg->local_event_size_bytes = req->self_event_size;
            memcpy(tmp_ptr, self_event, req->self_event_size);
            tmp_ptr += req->self_event_size;
        }
Nikhil's avatar
Nikhil committed
1112 1113 1114 1115 1116 1117 1118
     }
	   //printf("\n dragonfly remote event %d local event %d last packet %d %lf ", msg->remote_event_size_bytes, msg->local_event_size_bytes, is_last_pckt, xfer_to_nic_time);
    tw_event_send(e_new);
    return xfer_to_nic_time;
}

/* dragonfly packet event reverse handler */
1119
static void dragonfly_custom_packet_event_rc(tw_lp *sender)
Nikhil's avatar
Nikhil committed
1120 1121 1122 1123 1124 1125
{
	  codes_local_latency_reverse(sender);
	    return;
}

/*When a packet is sent from the current router and a buffer slot becomes available, a credit is sent back to schedule another packet event*/
1126
static void router_credit_send(router_state * s, terminal_custom_message * msg, 
Nikhil's avatar
Nikhil committed
1127 1128 1129
  tw_lp * lp, int sq) {
  tw_event * buf_e;
  tw_stime ts;
1130
  terminal_custom_message * buf_msg;
Nikhil's avatar
Nikhil committed
1131 1132 1133 1134 1135 1136 1137 1138 1139 1140 1141

  int dest = 0,  type = R_BUFFER;
  int is_terminal = 0;

  const dragonfly_param *p = s->params;
 
  // Notify sender terminal about available buffer space
  if(msg->last_hop == TERMINAL) {
    dest = msg->src_terminal_id;
    type = T_BUFFER;
    is_terminal = 1;
1142 1143 1144 1145
  } else if(msg->last_hop == GLOBAL 
          || msg->last_hop == LOCAL
          || msg->last_hop == ROOT)
  {
Nikhil's avatar
Nikhil committed
1146 1147 1148 1149 1150 1151 1152
    dest = msg->intm_lp_id;
  } else
    printf("\n Invalid message type");

  ts = g_tw_lookahead + p->credit_delay +  tw_rand_unif(lp->rng);
	
  if (is_terminal) {
1153
    buf_e = model_net_method_event_new(dest, ts, lp, DRAGONFLY_CUSTOM, 
Nikhil's avatar
Nikhil committed
1154 1155 1156
      (void**)&buf_msg, NULL);
    buf_msg->magic = terminal_magic_num;
  } else {
1157
    buf_e = model_net_method_event_new(dest, ts, lp, DRAGONFLY_CUSTOM_ROUTER,
Nikhil's avatar
Nikhil committed
1158 1159 1160 1161 1162 1163 1164 1165 1166 1167 1168 1169 1170 1171 1172 1173 1174 1175
            (void**)&buf_msg, NULL);
    buf_msg->magic = router_magic_num;
  }
 
  if(sq == -1) {
    buf_msg->vc_index = msg->vc_index;
    buf_msg->output_chan = msg->output_chan;
  } else {
    buf_msg->vc_index = msg->saved_vc;
    buf_msg->output_chan = msg->saved_channel;
  }
  
  buf_msg->type = type;

  tw_event_send(buf_e);
  return;
}

1176
static void packet_generate_rc(terminal_state * s, tw_bf * bf, terminal_custom_message * msg, tw_lp * lp)
Nikhil's avatar
Nikhil committed
1177 1178 1179 1180 1181 1182 1183
{
   s->packet_gen--;
   packet_gen--;
   
   tw_rand_reverse_unif(lp->rng);

   int num_chunks = msg->packet_size/s->params->chunk_size;
1184
   if(msg->packet_size < s->params->chunk_size)
Nikhil's avatar
Nikhil committed
1185 1186 1187 1188
       num_chunks++;

   int i;
   for(i = 0; i < num_chunks; i++) {
1189
        delete_terminal_custom_message_list(return_tail(s->terminal_msgs, 
Nikhil's avatar
Nikhil committed
1190 1191 1192 1193 1194 1195 1196 1197 1198
          s->terminal_msgs_tail, 0));
        s->terminal_length -= s->params->chunk_size;
   }
    if(bf->c5) {
        codes_local_latency_reverse(lp);
        s->in_send_loop = 0;
    }
      if(bf->c11) {
        s->issueIdle = 0;
1199 1200 1201 1202
        if(bf->c8)
        {
            s->last_buf_full[0] = msg->saved_busy_time;
        }
Nikhil's avatar
Nikhil committed
1203 1204 1205 1206 1207 1208 1209 1210 1211
      }
     struct mn_stats* stat;
     stat = model_net_find_stats(msg->category, s->dragonfly_stats_array);
     stat->send_count--;
     stat->send_bytes -= msg->packet_size;
     stat->send_time -= (1/s->params->cn_bandwidth) * msg->packet_size;
}

/* generates packet at the current dragonfly compute node */
1212
static void packet_generate(terminal_state * s, tw_bf * bf, terminal_custom_message * msg, 
Nikhil's avatar
Nikhil committed
1213 1214 1215 1216 1217 1218 1219 1220 1221 1222 1223
  tw_lp * lp) {
  packet_gen++;
  s->packet_gen++;

  tw_stime ts, nic_ts;

  assert(lp->gid != msg->dest_terminal_id);
  const dragonfly_param *p = s->params;

  int total_event_size;
  uint64_t num_chunks = msg->packet_size / p->chunk_size;
1224 1225
  double cn_delay = s->params->cn_delay;

1226
  if (msg->packet_size < s->params->chunk_size) 
Nikhil's avatar
Nikhil committed
1227 1228
      num_chunks++;

1229 1230 1231 1232
  if(msg->packet_size < s->params->chunk_size)
      cn_delay = bytes_to_ns(msg->packet_size % s->params->chunk_size, s->params->cn_bandwidth);

  nic_ts = g_tw_lookahead + (num_chunks * cn_delay) + tw_rand_unif(lp->rng);
Nikhil's avatar
Nikhil committed
1233 1234 1235 1236 1237 1238 1239 1240 1241 1242 1243 1244
  
  msg->packet_ID = lp->gid + g_tw_nlp * s->packet_counter;
  msg->my_N_hop = 0;
  msg->my_l_hop = 0;
  msg->my_g_hop = 0;

  //if(msg->dest_terminal_id == TRACK)
  if(msg->packet_ID == LLU(TRACK_PKT))
    printf("\n Packet %llu generated at terminal %d dest %llu size %llu num chunks %llu ", 
            msg->packet_ID, s->terminal_id, LLU(msg->dest_terminal_id),
            LLU(msg->packet_size), LLU(num_chunks));

1245
  for(int i = 0; i < num_chunks; i++)
Nikhil's avatar
Nikhil committed
1246
  {
1247 1248
    terminal_custom_message_list *cur_chunk = (terminal_custom_message_list*)malloc(
      sizeof(terminal_custom_message_list));
Nikhil's avatar
Nikhil committed
1249
    msg->origin_router_id = s->router_id;
1250
    init_terminal_custom_message_list(cur_chunk, msg);
Nikhil's avatar
Nikhil committed
1251 1252 1253 1254 1255 1256
  
    if(msg->remote_event_size_bytes + msg->local_event_size_bytes > 0) {
      cur_chunk->event_data = (char*)malloc(
          msg->remote_event_size_bytes + msg->local_event_size_bytes);
    }
    
1257
    void * m_data_src = model_net_method_get_edata(DRAGONFLY_CUSTOM, msg);
Nikhil's avatar
Nikhil committed
1258 1259 1260 1261 1262 1263 1264 1265 1266 1267 1268
    if (msg->remote_event_size_bytes){
      memcpy(cur_chunk->event_data, m_data_src, msg->remote_event_size_bytes);
    }
    if (msg->local_event_size_bytes){ 
      m_data_src = (char*)m_data_src + msg->remote_event_size_bytes;
      memcpy((char*)cur_chunk->event_data + msg->remote_event_size_bytes, 
          m_data_src, msg->local_event_size_bytes);
    }

    cur_chunk->msg.chunk_id = i;
    cur_chunk->msg.origin_router_id = s->router_id;
1269
    append_to_terminal_custom_message_list(s->terminal_msgs, s->terminal_msgs_tail,
Nikhil's avatar
Nikhil committed
1270 1271 1272 1273 1274 1275 1276 1277 1278
      0, cur_chunk);
    s->terminal_length += s->params->chunk_size;
  }

  if(s->terminal_length < 2 * s->params->cn_vc_size) {
    model_net_method_idle_event(nic_ts, 0, lp);
  } else {
    bf->c11 = 1;
    s->issueIdle = 1;
1279 1280 1281 1282 1283 1284 1285 1286

      if(s->last_buf_full[0] == 0.0)
      {
        bf->c8 = 1;
        msg->saved_busy_time = s->last_buf_full[0];
        /* TODO: Assumes a single vc from terminal to router */
        s->last_buf_full[0] = tw_now(lp);
      }
Nikhil's avatar
Nikhil committed
1287 1288 1289 1290 1291
  }
  
  if(s->in_send_loop == 0) {
    bf->c5 = 1;
    ts = codes_local_latency(lp);
1292
    terminal_custom_message *m;
1293
    tw_event* e = model_net_method_event_new(lp->gid, ts, lp, DRAGONFLY_CUSTOM, 
Nikhil's avatar
Nikhil committed
1294 1295 1296 1297 1298 1299 1300
      (void**)&m, NULL);
    m->type = T_SEND;
    m->magic = terminal_magic_num;
    s->in_send_loop = 1;
    tw_event_send(e);
  }

1301
  total_event_size = model_net_get_msg_sz(DRAGONFLY_CUSTOM) + 
Nikhil's avatar
Nikhil committed
1302 1303 1304 1305 1306 1307 1308 1309 1310 1311 1312 1313
      msg->remote_event_size_bytes + msg->local_event_size_bytes;
  mn_stats* stat;
  stat = model_net_find_stats(msg->category, s->dragonfly_stats_array);
  stat->send_count++;
  stat->send_bytes += msg->packet_size;
  stat->send_time += (1/p->cn_bandwidth) * msg->packet_size;
  if(stat->max_event_size < total_event_size)
	  stat->max_event_size = total_event_size;

  return;
}

1314
static void packet_send_rc(terminal_state * s, tw_bf * bf, terminal_custom_message * msg,
Nikhil's avatar
Nikhil committed
1315 1316 1317 1318
        tw_lp * lp)
{
      if(bf->c1) {
        s->in_send_loop = 1;
1319 1320 1321 1322
        
        if(bf->c10)
            s->last_buf_full[0] = msg->saved_busy_time;
        
Nikhil's avatar
Nikhil committed
1323 1324 1325 1326 1327 1328 1329 1330 1331 1332 1333 1334 1335
        return;
      }
      
      tw_rand_reverse_unif(lp->rng);
      s->terminal_available_time = msg->saved_available_time;
      if(bf->c2) {
        codes_local_latency_reverse(lp);
      }
     
      s->terminal_length += s->params->chunk_size;
      s->packet_counter--;
      s->vc_occupancy[0] -= s->params->chunk_size;

1336
      terminal_custom_message_list* cur_entry = (terminal_custom_message_list *)rc_stack_pop(s->st);
Nikhil's avatar
Nikhil committed
1337

1338
      prepend_to_terminal_custom_message_list(s->terminal_msgs, 
Nikhil's avatar
Nikhil committed
1339 1340 1341 1342 1343 1344 1345
              s->terminal_msgs_tail, 0, cur_entry);
      if(bf->c3) {
        tw_rand_reverse_unif(lp->rng);
      }
      if(bf->c4) {
        s->in_send_loop = 1;
      }
1346
      if(bf->c5)
Nikhil's avatar
Nikhil committed
1347
      {
1348
          tw_rand_reverse_unif(lp->rng);
Nikhil's avatar
Nikhil committed
1349
          s->issueIdle = 1;
1350 1351 1352
          if(bf->c6)
          {
            s->busy_time = msg->saved_total_time;
1353
            s->last_buf_full[0] = msg->saved_busy_time;
1354
            s->busy_time_sample = msg->saved_sample_time;
1355 1356
            s->ross_sample.busy_time_sample = msg->saved_sample_time;
            s->busy_time_ross_sample = msg->saved_busy_time_ross;
1357
          }
1358
      }
Nikhil's avatar
Nikhil committed
1359 1360 1361
      return;
}
/* sends the packet from the current dragonfly compute node to the attached router */
1362
static void packet_send(terminal_state * s, tw_bf * bf, terminal_custom_message * msg, 
Nikhil's avatar
Nikhil committed
1363 1364 1365 1366
  tw_lp * lp) {
  
  tw_stime ts;
  tw_event *e;
1367
  terminal_custom_message *m;
Nikhil's avatar
Nikhil committed
1368 1369
  tw_lpid router_id;

1370
  terminal_custom_message_list* cur_entry = s->terminal_msgs[0];
Nikhil's avatar
Nikhil committed
1371

1372 1373 1374 1375 1376 1377 1378 1379 1380 1381
  if(s->vc_occupancy[0] + s->params->chunk_size > s->params->cn_vc_size)
  {
      if(s->last_buf_full[0] == 0.0)
      {
        bf->c10 = 1;
        msg->saved_busy_time = s->last_buf_full[0];
        s->last_buf_full[0] = tw_now(lp);
      }
  }

Nikhil's avatar
Nikhil committed
1382 1383 1384 1385 1386 1387 1388 1389
  if(s->vc_occupancy[0] + s->params->chunk_size > s->params->cn_vc_size 
      || cur_entry == NULL) {
    bf->c1 = 1;
    s->in_send_loop = 0;
    return;
  }

  uint64_t num_chunks = cur_entry->msg.packet_size/s->params->chunk_size;
1390
  if(cur_entry->msg.packet_size < s->params->chunk_size)
Nikhil's avatar
Nikhil committed
1391 1392 1393
    num_chunks++;

  tw_stime delay = s->params->cn_delay;
1394
  if((cur_entry->msg.packet_size < s->params->chunk_size) && (cur_entry->msg.chunk_id == num_chunks - 1))
Nikhil's avatar
Nikhil committed
1395 1396 1397 1398 1399 1400 1401
       delay = bytes_to_ns(cur_entry->msg.packet_size % s->params->chunk_size, s->params->cn_bandwidth); 

  msg->saved_available_time = s->terminal_available_time;
  ts = g_tw_lookahead + delay + tw_rand_unif(lp->rng);
  s->terminal_available_time = maxd(s->terminal_available_time, tw_now(lp));
  s->terminal_available_time += ts;

1402
  ts = s->terminal_available_time - tw_now(lp);
Nikhil's avatar
Nikhil committed
1403 1404 1405 1406
  //TODO: be annotation-aware
  codes_mapping_get_lp_info(lp->gid, lp_group_name, &mapping_grp_id, NULL,
      &mapping_type_id, NULL, &mapping_rep_id, &mapping_offset);
  codes_mapping_get_lp_id(lp_group_name, LP_CONFIG_NM_ROUT, NULL, 1,
1407 1408
      s->router_id / num_routers_per_mgrp, s->router_id % num_routers_per_mgrp, &router_id);
//  printf("\n Local router id %d global router id %d ", s->router_id, router_id);
Nikhil's avatar
Nikhil committed
1409 1410
  // we are sending an event to the router, so no method_event here
  void * remote_event;
1411
  e = model_net_method_event_new(router_id, ts, lp,
1412
          DRAGONFLY_CUSTOM_ROUTER, (void**)&m, &remote_event);
1413
  memcpy(m, &cur_entry->msg, sizeof(terminal_custom_message));
Nikhil's avatar
Nikhil committed
1414 1415 1416 1417 1418 1419 1420 1421 1422 1423 1424
  if (m->remote_event_size_bytes){
    memcpy(remote_event, cur_entry->event_data, m->remote_event_size_bytes);
  }

  m->type = R_ARRIVE;
  m->src_terminal_id = lp->gid;
  m->vc_index = 0;
  m->last_hop = TERMINAL;
  m->magic = router_magic_num;
  m->path_type = -1;
  m->local_event_size_bytes = 0;
1425
  m->intm_rtr_id = -1;
Nikhil's avatar
Nikhil committed
1426 1427 1428 1429 1430 1431
  tw_event_send(e);


  if(cur_entry->msg.chunk_id == num_chunks - 1 && 
      (cur_entry->msg.local_event_size_bytes > 0)) {
    bf->c2 = 1;
1432 1433
    tw_stime local_ts = codes_local_latency(lp); 
    tw_event *e_new = tw_event_new(cur_entry->msg.sender_lp, local_ts, lp);
Nikhil's avatar
Nikhil committed
1434 1435 1436 1437 1438 1439 1440 1441 1442
    void * m_new = tw_event_data(e_new);
    void *local_event = (char*)cur_entry->event_data + 
      cur_entry->msg.remote_event_size_bytes;
    memcpy(m_new, local_event, cur_entry->msg.local_event_size_bytes);
    tw_event_send(e_new);
  }
  s->packet_counter++;
  s->vc_occupancy[0] += s->params->chunk_size;
  cur_entry = return_head(s->terminal_msgs, s->terminal_msgs_tail, 0); 
Misbah Mubarak's avatar