fattree.c 97.4 KB
Newer Older
1
2
#include <ross.h>

Noah Wolfe's avatar
Noah Wolfe committed
3
#include "codes/jenkins-hash.h"
4
5
6
7
8
9
10
#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"
#include "codes/net/fattree.h"
#include "sys/file.h"
11
#include "codes/quickhash.h"
Noah Wolfe's avatar
Noah Wolfe committed
12
#include "codes/rc-stack.h"
Nikhil's avatar
Nikhil committed
13
14
#include <ctype.h>
#include <search.h>
15

Matthieu Dorier's avatar
Matthieu Dorier committed
16
17
18
19
20
#ifdef ENABLE_CORTEX
#include <cortex/cortex.h>
#include <cortex/topology.h>
#endif

21
22
23
#define CREDIT_SIZE 8
#define MEAN_PROCESS 1.0

Nikhil's avatar
Nikhil committed
24
#define TERMINAL_GUID_PREFIX ((uint64_t)(64) << 32)
25
#define FTREE_HASH_TABLE_SIZE 4999
26

27
// debugging parameters
28
29
#define TRACK_PKT -1
//#define TRACK_PKT 2820
30
#define FATTREE_HELLO 0
31
#define FATTREE_DEBUG 0
32
33
#define FATTREE_CONNECTIONS 0
#define FATTREE_MSG 0
Nikhil's avatar
Nikhil committed
34
#define DEBUG_RC 0
35

36
//Data Collection Output Files
Nikhil's avatar
Nikhil committed
37
#define PARAMS_LOG 0
38

39
40
41
#define LP_CONFIG_NM (model_net_lp_config_names[FATTREE])
#define LP_METHOD_NM (model_net_method_names[FATTREE])

42
43
44
45
46
#ifdef ENABLE_CORTEX
/* This structure is defined at the end of the file */
extern cortex_topology fattree_cortex_topology;
#endif

47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
#if DEBUG_RC
  //Reverse Compute Debug Variables
  long long packet_event_f = 0;
  long long packet_event_r = 0;
  long long t_generate_f = 0;
  long long t_generate_r = 0;
  long long t_send_f = 0;
  long long t_send_r = 0;
  long long t_arrive_f = 0;
  long long t_arrive_r = 0;
  long long t_buffer_f = 0;
  long long t_buffer_r = 0;
  long long s_send_f = 0;
  long long s_send_r = 0;
  long long s_arrive_f = 0;
  long long s_arrive_r = 0;
  long long s_buffer_f = 0;
  long long s_buffer_r = 0;
#endif

67
long fattree_packet_gen = 0, fattree_packet_fin = 0;
Nikhil's avatar
Nikhil committed
68
int dump_topo = 0;
69

70
71
72
static double maxd(double a, double b) { return a < b ? b : a; }

// arrival rate
Noah Wolfe's avatar
Noah Wolfe committed
73
//static double MEAN_INTERVAL=200.0;
74
75

typedef struct fattree_param fattree_param;
76
/* annotation-specific parameters (unannotated entry occurs at the
77
78
79
 * last index) */
static uint64_t                  num_params = 0;
static fattree_param           * all_params = NULL;
Noah Wolfe's avatar
Noah Wolfe committed
80
static const config_anno_map_t * anno_map   = NULL;
81
82
83
84
85
86
87

/* global variables for codes mapping */
static char lp_group_name[MAX_NAME_LENGTH];
static char def_group_name[MAX_NAME_LENGTH];
static int def_gname_set = 0;
static int mapping_grp_id, mapping_type_id, mapping_rep_id, mapping_offset;

Nikhil's avatar
Nikhil committed
88
89
enum ROUTING_ALGO
{
Nikhil's avatar
Nikhil committed
90
    STATIC=1,
Nikhil's avatar
Nikhil committed
91
92
    ADAPTIVE,
};
Nikhil's avatar
Nikhil committed
93
94
95
96
97
98

enum RAIL_SELECTION_ALGO
{
    RAIL_DEDICATED=1,
    RAIL_ADAPTIVE,
};
Nikhil's avatar
Nikhil committed
99
100
101
static char routing_folder[MAX_NAME_LENGTH];
static char dot_file_p[MAX_NAME_LENGTH];

102
103
104
/* switch magic number */
int switch_magic_num = 0;

105
/* terminal magic number */
106
int fattree_terminal_magic_num = 0;
107

Nikhil's avatar
Nikhil committed
108
109
110
/* global variables for DOT file generation */
static FILE *dot_file = NULL;

111
112
113
114
115
116
117
118
typedef struct fattree_message_list fattree_message_list;
struct fattree_message_list {
    fattree_message msg;
    char* event_data;
    fattree_message_list *next;
    fattree_message_list *prev;
};

119
void init_fattree_message_list(fattree_message_list *this,
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
  fattree_message *inmsg) {
    this->msg = *inmsg;
    this->event_data = NULL;
    this->next = NULL;
    this->prev = NULL;
}

void delete_fattree_message_list(fattree_message_list *this) {
    if(this->event_data != NULL) free(this->event_data);
    free(this);
}

struct fattree_param
{
  int ft_type;
  // configuration parameters
  int num_levels;
137
138
139
  int link_repetitions;
  int Ns; // number of switches per pod
  int Np; //Number of pods
140
141
142
  int *num_switches; //switches at various levels
  int *switch_radix; //radix of switches are various levels
  double link_bandwidth;/* bandwidth of a wire connecting switches */
143
  double cn_bandwidth;/* bandwidth of the compute node channels
144
145
146
                        connected to switch */
  int vc_size; /* buffer size of the link channels */
  int cn_vc_size; /* buffer size of the compute node channels */
147
  int chunk_size; /* full-sized packets are broken into smaller chunks.*/
148
  int packet_size;
149
  int num_terminals;
Nikhil's avatar
Nikhil committed
150
151
152
153
  int l1_set_size, l0_set_size;
  int l1_term_size, l0_term_size;
  int cn_per_switch;
  double tapering_ratio;
154
155
156
157
158
  double cn_delay;
  double head_delay;
  double credit_delay;
  double router_delay;
  double soft_delay;
Nikhil's avatar
Nikhil committed
159
  int routing;
Nikhil's avatar
Nikhil committed
160
161
162
163
  int rail_select;
  int rail_size_limit;
  int num_rails;
  int ports_per_nic;
164
165
};

166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
struct ftree_hash_key
{
    uint64_t message_id;
    tw_lpid sender_id;
};

struct ftree_qhash_entry
{
   struct ftree_hash_key key;
   char * remote_event_data;
   int num_chunks;
   int remote_event_size;
   struct qhash_head hash_link;
};

181
182
183
184
185
186
187
188
189
/* handles terminal and switch events like packet generate/send/receive/buffer */
typedef enum event_t event_t;
typedef struct ft_terminal_state ft_terminal_state;
typedef struct switch_state switch_state;

/* fattree compute node data structure */
struct ft_terminal_state
{
  unsigned long long packet_counter;
190
  int packet_gen;
191
  int packet_fin;
192
193
194
  // Fattree specific parameters
  unsigned int terminal_id;
  unsigned int switch_id;
Nikhil's avatar
Nikhil committed
195
196
  unsigned int rail_id;
  tw_lpid *switch_lp;
197
198

  // Each terminal will have an input and output channel with the switch
Nikhil's avatar
Nikhil committed
199
200
  int *vc_occupancy; // NUM_VC
  tw_stime* terminal_available_time;
201

202
203
  struct mn_stats fattree_stats_array[CATEGORY_MAX];

204
205
  fattree_message_list **terminal_msgs;
  fattree_message_list **terminal_msgs_tail;
Nikhil's avatar
Nikhil committed
206
207
208
  int *terminal_length;
  int *in_send_loop;
  int *issueIdle;
209
210

   struct rc_stack * st;
211
212
213

  char * anno;
  fattree_param *params;
214
215
216
217
218
219
220
221
222
223
224

  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;

Nikhil's avatar
Nikhil committed
225
226
  tw_stime *last_buf_full;
  tw_stime *busy_time;
227
  char output_buf[4096];
228
  char output_buf3[4096];
229

230
231
232
233
234
  /* For sampling */
  long fin_chunks_sample;
  long data_size_sample;
  double fin_hops_sample;
  tw_stime fin_chunks_time;
Nikhil's avatar
Nikhil committed
235
236
  tw_stime busy_time_sample;

237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
};

/* terminal event type (1-4) */
enum event_t
{
  T_GENERATE=1,
  T_ARRIVE,
  T_SEND,
  T_BUFFER,
  S_SEND,
  S_ARRIVE,
  S_BUFFER,
};

enum last_hop
{
   LINK,
   TERMINAL
};

struct switch_state
{
  unsigned int switch_id;
  int switch_level;
Nikhil's avatar
Nikhil committed
261
  unsigned int rail_id;
262
263
264
265
266
267
268
269
270
271
272
  int radix;
  int num_cons;
  int num_lcons;
  int con_per_lneigh;
  int con_per_uneigh;;
  int start_lneigh;
  int end_lneigh;
  int start_uneigh;
  int unused;

  tw_stime* next_output_available_time;
273
274
275
276
277
  tw_stime* last_buf_full;

  tw_stime* busy_time;
  tw_stime* busy_time_sample;

278
279
280
281
282
283
284
285
286
287
  fattree_message_list **pending_msgs;
  fattree_message_list **pending_msgs_tail;
  fattree_message_list **queued_msgs;
  fattree_message_list **queued_msgs_tail;
  int *queued_length;
  int *in_send_loop;
  int* vc_occupancy;
  int64_t* link_traffic;
  tw_lpid *port_connections;

288
289
290
  char output_buf[4096];
  char output_buf2[4096];

Noah Wolfe's avatar
Noah Wolfe committed
291
292
  struct rc_stack * st;

293
294
  char * anno;
  fattree_param *params;
Nikhil's avatar
Nikhil committed
295
296
  /* array to store linear forwaring tables in case we use static routing */
  int *lft;
297
298
};

299
300
static tw_stime         fattree_total_time = 0;
static tw_stime         fattree_max_latency = 0;
Noah Wolfe's avatar
Noah Wolfe committed
301
//static tw_stime         max_collective = 0;
302
303
304
305
306
307
308
309


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;

310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
static int fattree_rank_hash_compare(
void *key, struct qhash_head *link)
{
    struct ftree_hash_key *message_key = (struct ftree_hash_key *)key;
    struct ftree_qhash_entry *tmp = NULL;

    tmp = qhash_entry(link, struct ftree_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 fattree_hash_func(void *k, int table_size)
{
    struct ftree_hash_key *tmp = (struct ftree_hash_key *)k;
    uint64_t key = (~tmp->message_id) + (tmp->message_id << 18);
    key = key * 21;
    key = ~key ^ (tmp->sender_id >> 4);
    key = key * tmp->sender_id;
    return (int)(key & (table_size - 1));
}

334
335
static void free_tmp(void * ptr)
{
336
    struct ftree_qhash_entry * ftree = ptr;
337
338
339
340
    free(ftree->remote_event_data);
    free(ftree);
}

341
static void append_to_fattree_message_list(
342
343
        fattree_message_list ** thisq,
        fattree_message_list ** thistail,
344
        int index,
345
346
347
348
349
350
        fattree_message_list *msg) {
    if(thisq[index] == NULL) {
        thisq[index] = msg;
    } else {
        thistail[index]->next = msg;
        msg->prev = thistail[index];
351
    }
352
353
354
    thistail[index] = msg;
}

355
static void prepend_to_fattree_message_list(
356
357
        fattree_message_list ** thisq,
        fattree_message_list ** thistail,
358
        int index,
359
360
361
362
363
364
        fattree_message_list *msg) {
    if(thisq[index] == NULL) {
        thistail[index] = msg;
    } else {
        thisq[index]->prev = msg;
        msg->next = thisq[index];
365
    }
366
367
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
404
405
406
407
408
409
410
    thisq[index] = msg;
}

static fattree_message_list* return_head(
        fattree_message_list ** thisq,
        fattree_message_list ** thistail,
        int index) {
    fattree_message_list *head = thisq[index];
    if(head != NULL) {
        thisq[index] = head->next;
        if(head->next != NULL) {
            head->next->prev = NULL;
            head->next = NULL;
        } else {
            thistail[index] = NULL;
        }
    }
    return head;
}

static fattree_message_list* return_tail(
        fattree_message_list ** thisq,
        fattree_message_list ** thistail,
        int index) {
    fattree_message_list *tail = thistail[index];
    if(tail->prev != NULL) {
        tail->prev->next = NULL;
        thistail[index] = tail->prev;
        tail->prev = NULL;
    } else {
        thistail[index] = NULL;
        thisq[index] = NULL;
    }
    return tail;
}

//decl
void switch_credit_send(switch_state * s, tw_bf * bf, fattree_message * msg,
    tw_lp * lp, int sq);
int ft_get_output_port( switch_state * s, tw_bf * bf, fattree_message * msg,
    tw_lp * lp, int *out_off );
int get_base_port(switch_state *s, int from_term, int index);


/* returns the fattree switch lp type for lp registration */
Noah Wolfe's avatar
Noah Wolfe committed
411
//static const tw_lptype* fattree_get_switch_lp_type(void);
412

413
/* returns the fattree message size */
414
415
416
417
418
static int fattree_get_msg_sz(void)
{
  return sizeof(fattree_message);
}

Nikhil's avatar
Nikhil committed
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
static inline uint64_t get_term_guid(ft_terminal_state *t)
{
  return TERMINAL_GUID_PREFIX + t->terminal_id;
}

static inline uint64_t get_switch_guid(switch_state *s)
{
  return (((uint64_t)(s->switch_level + 1)) << 32) + s->switch_id;
}

typedef struct {
  uint64_t guid;
  uint64_t port;
} guid_port_combi_t;

static int cmp_guids(const void *g1, const void *g2)
{
  uint64_t guid1 = *((uint64_t *) g1);
  uint64_t guid2 = ((guid_port_combi_t *) g2)->guid;
  if (guid1 == guid2)
    return 0;
  else
    return 1;
}

/* parse external file with give forwarding tables
 * file name: 0x<switch guid>.lft
 * content: '0x<terminal guid> <egress port>' per line, e.g.:
 * `head 0x0000000100000000.lf`
 *    0x0000000100000000 0
 *    0x00000040000000ff 22
 *    0x0000000100000001 19
 */
static int read_static_lft(switch_state *s, tw_lp *lp)
{
  if (!s || !lp)
    return -1;

  char dir_name[512];
  char file_name[512];

  char *io_dir = routing_folder;
  sprintf(dir_name, "%s", io_dir);

  sprintf(file_name, "%s/0x%016"PRIx64".lft", dir_name, get_switch_guid(s));
  FILE *file = NULL;
  if (!(file = fopen(file_name, "r")))
    return -1;

  char line[UINT8_MAX];
  char *p = NULL, *e = NULL;
  uint64_t dest_guid = 0, port = 0;

  int num_added = 0;
  guid_port_combi_t *tmpLFT = calloc(s->params->num_terminals,
        sizeof(guid_port_combi_t));
  s->lft = malloc(s->params->num_terminals * sizeof(int));
  /* init all with -1 so that we find missing routing entries */
  for (int i = 0; i < s->params->num_terminals; i++) s->lft[i] = -1;

  while (fgets(line, sizeof(line), file)) {
    p = line;
    while (isspace(*p))
      p++;

    if (*p == '\0' || *p == '\n' || *p == '#')
      continue;

    dest_guid = strtoull(p, &e, 16);
    if (e == p || (!isspace(*e) && *e != '#' && *e != '\0')) {
      errno = EINVAL;
      return -1;
    }

    p = e;
    while (isspace(*p))
      p++;

    port = strtoull(p, &e, 0);
    if (e == p || (!isspace(*e) && *e != '#' && *e != '\0')) {
      errno = EINVAL;
      return -1;
    }

    if (dest_guid < TERMINAL_GUID_PREFIX){
      // we don't need switches
    } else {
      tmpLFT[num_added].guid = dest_guid;
      tmpLFT[num_added].port = port;
      num_added++;
    }
  }

  /* we want a real LFT with terminal_id as lookup index, so have to
   * convert the read lft, which might contain entries for switches
   * or is permutated, into the correct format
   */
  ft_terminal_state tmpTerm;
  for (int dest_num = 0; dest_num < s->params->num_terminals; dest_num++) {
    tmpTerm.terminal_id = dest_num;
    uint64_t key = get_term_guid(&tmpTerm);
    size_t size = s->params->num_terminals;
    guid_port_combi_t *elem = lfind(&key, tmpLFT, &size,
          sizeof(guid_port_combi_t), cmp_guids);
    assert(elem);
    // opensm uses ports=1...n, so convert back here
    //if(NULL != getenv("OSM_ROUTING"))
       s->lft[dest_num] = elem->port - 1;
    //else
    //   s->lft[dest_num] = elem->port;
  }

#if FATTREE_DEBUG
  printf("I am switch %d (guid=%016"PRIx64") and my LFT is:\n",
        s->switch_id, get_switch_guid(s));
  for (int dest_num = 0; dest_num < s->params->num_terminals; dest_num++)
     printf("\tdest %d -> egress port %d\n", dest_num, s->lft[dest_num]);
#endif

  free(tmpLFT);
  fclose(file);
  return 0;
}

static void dot_write_open_file(FILE **fout)
{
  if(!fout || *fout) return;
  if(!dump_topo) return;

  char dir_name[512];
  char file_name[512];

  char *io_dir = routing_folder;
  sprintf(dir_name, "%s", io_dir);

  char *dot_file_prefix = dot_file_p;
  int rank;
556
  MPI_Comm_rank(MPI_COMM_CODES, &rank);
Nikhil's avatar
Nikhil committed
557
558
559
560
561
562
563
  sprintf(file_name, "%s/%s.dot.%d", dir_name, dot_file_prefix, rank);
  *fout = fopen(file_name, "w+");
  if(*fout == NULL) {
    tw_error(TW_LOC, "Error opening dot file for writing");
  }
}

564
/*static void dot_write_close_file(FILE **fout)
Nikhil's avatar
Nikhil committed
565
566
567
568
569
{
  if(!fout || !(*fout)) return;
  if(!dump_topo) return;
  fclose(*fout);
  *fout = NULL;
570
}*/
Nikhil's avatar
Nikhil committed
571
572

/* sw IDs aren't unique, but level+ID info is */
573
static void dot_write_switch_info(switch_state *s, FILE *fout)
Nikhil's avatar
Nikhil committed
574
575
576
{
  if(!s || s->unused || !(s->params) || !fout) return;
  if(!dump_topo) return;
Nikhil's avatar
Nikhil committed
577
  if(s->rail_id) return;
Nikhil's avatar
Nikhil committed
578
579
580
581
582
583

  const char *root_attr = ",root_switch", *empty_attr = "";
  uint64_t switch_guid = get_switch_guid(s);
  fattree_param *p = s->params;

  fprintf(fout, "\t\"S_%d_%d\" [comment=\"0x%016"PRIx64",radix=%d%s\"];\n",
Nikhil's avatar
Nikhil committed
584
      s->switch_level, s->switch_id, switch_guid, s->radix,
Nikhil's avatar
Nikhil committed
585
586
587
588
589
590
591
592
      (p->num_levels == s->switch_level + 1) ? root_attr : empty_attr);
}

/* terminal IDs are unique in this model */
static void dot_write_term_info(ft_terminal_state *t, FILE *fout)
{
  uint64_t term_guid = t->terminal_id;
  if(!dump_topo) return;
Nikhil's avatar
Nikhil committed
593
  if(t->rail_id) return;
Nikhil's avatar
Nikhil committed
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652

  if(!t || !fout) return;
  /* need to shift the term guid, because opensm doesn't like guid=0...0 */
  //if(NULL != getenv("OSM_ROUTING"))
     term_guid = get_term_guid(t);
  fprintf(fout, "\t\"H_%d\" [comment=\"0x%016"PRIx64"\"];\n",
        t->terminal_id, term_guid);
}

static void dot_write_sw2sw_link(int lsw_lvl, int lsw_id, int lsw_port,
                                 int rsw_lvl, int rsw_id, int rsw_port,
                                 FILE *fout)
{
  int tmp_lsw_port = 0, tmp_rsw_port = 0;

  if(!fout) return;
  if(!dump_topo) return;

  /* add +1 to ports, since ibsim/opensm start with physical port number 1
   * (port 0 is internal sw port)
   */
  //if(NULL != getenv("OSM_ROUTING")) {
     tmp_lsw_port = lsw_port + 1;
     tmp_rsw_port = rsw_port + 1;
  //} else {
  //   tmp_lsw_port = lsw_port;
  //   tmp_rsw_port = rsw_port;
  //}

  /* if original right hand side is unknown we write '?' instead
   * and must fix it later ... nice topology definition ... :-(
   */
  if(-1 == rsw_port)
     fprintf(fout, "\t\"S_%d_%d\" -> \"S_%d_%d\" [comment=\"P%d->P?\"];\n",
           lsw_lvl, lsw_id, rsw_lvl, rsw_id, tmp_lsw_port);
  else
     fprintf(fout, "\t\"S_%d_%d\" -> \"S_%d_%d\" [comment=\"P%d->P%d\"];\n",
           lsw_lvl, lsw_id, rsw_lvl, rsw_id, tmp_lsw_port, tmp_rsw_port);
}

static void dot_write_sw2term_link(int lsw_lvl, int lsw_id, int lsw_port,
                                   int term_id, int dump_reverse, FILE *fout)
{
  if(!fout) return;
  if(!dump_topo) return;

  /* add +1 to ports, since ibsim/opensm start with physical port number 1
   * (port 0 is internal sw port)
   */
  //if(NULL != getenv("OSM_ROUTING"))
     lsw_port++;

  fprintf(fout, "\t\"S_%d_%d\" -> \"H_%d\" [comment=\"P%d->P1\"];\n",
        lsw_lvl, lsw_id, term_id, lsw_port);
  if(dump_reverse)
     fprintf(fout, "\t\"H_%d\" -> \"S_%d_%d\" [comment=\"P1->P%d\"];\n",
           term_id, lsw_lvl, lsw_id, lsw_port);
}

653
/*static void dot_write_term2sw_link(int term_id, int rsw_lvl, int rsw_id,
Nikhil's avatar
Nikhil committed
654
655
656
657
658
                                   int rsw_port, FILE *fout)
{
  if(!fout) return;
  if(!dump_topo) return;

659
  *//* add +1 to ports, since ibsim/opensm start with physical port number 1
Nikhil's avatar
Nikhil committed
660
661
662
   * (port 0 is internal sw port)
   */
  //if(NULL != getenv("OSM_ROUTING"))
663
  //   rsw_port++;
Nikhil's avatar
Nikhil committed
664

665
666
667
  //fprintf(fout, "\t\"H_%d\" -> \"S_%d_%d\" [comment=\"P1->P%d\"];\n",
  //      term_id, rsw_lvl, rsw_id, rsw_port);
//}
Nikhil's avatar
Nikhil committed
668
669
670
671
672
673
674
675
676
677
678
679
680
681

void post_switch_init(switch_state *s, tw_lp *lp)
{
  /* read any LFTs which might have been generated by an external routing
   * algorithm, e.g., through the use of opensm\
   */
  if(s->params->routing == STATIC && !dump_topo) {
   if(0 != read_static_lft(s, lp)) {
     tw_error(TW_LOC, "Error while reading the routing table");
   }
  }
}


Noah Wolfe's avatar
Noah Wolfe committed
682
static void fattree_read_config(const char * anno, fattree_param *p){
683
684
685
686
687
688
689
  uint32_t h1 = 0, h2 = 0;
  bj_hashlittle2(LP_METHOD_NM, strlen(LP_METHOD_NM), &h1, &h2);
  switch_magic_num = h1 + h2;
    
  bj_hashlittle2(LP_METHOD_NM, strlen(LP_METHOD_NM), &h1, &h2);
  fattree_terminal_magic_num = h1 + h2;
  
690
691
  int i;

Nikhil's avatar
Nikhil committed
692
  p->ft_type = 0;
693
  configuration_get_value_int(&config, "PARAMS", "ft_type", anno,
694
      &p->ft_type);
Nikhil's avatar
Nikhil committed
695
  if(!g_tw_mynode) printf("FT type is %d\n", p->ft_type);
Nikhil's avatar
Nikhil committed
696
697
  if(p->ft_type == 1) printf("Use of FT type 1 is deprecated; please use type 0 for similar functionality\n");
  if(p->ft_type == 2) printf("You have chosen FT type 2: this is for cases in which different NICs are desired for different rails.\n");
698

699
  configuration_get_value_int(&config, "PARAMS", "num_levels", anno,
700
701
702
703
704
705
706
      &p->num_levels);
  if(p->num_levels <= 0) {
    tw_error(TW_LOC, "Too few num_levels, Aborting\n");
  }
  if(p->num_levels > 3) {
    tw_error(TW_LOC, "Too many num_levels, only upto 3 supported Aborting\n");
  }
Nikhil's avatar
Nikhil committed
707
708
709
710
711
712
713
714
  if(!g_tw_mynode) printf("FT num levels is %d\n", p->num_levels);
  
  p->tapering_ratio = 1;
  configuration_get_value_double(&config, "PARAMS", "tapering", anno,
      &p->tapering_ratio);
  if(!g_tw_mynode) printf("FT tapering is %lf\n", p->tapering_ratio);

  p->tapering_ratio += 1;
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759

  p->num_switches = (int *) malloc (p->num_levels * sizeof(int));
  p->switch_radix = (int*) malloc (p->num_levels * sizeof(int));

  char switch_counts_str[MAX_NAME_LENGTH];
  int rc = configuration_get_value(&config, "PARAMS", "switch_count", anno,
      switch_counts_str, MAX_NAME_LENGTH);
  if (rc == 0){
    tw_error(TW_LOC, "couldn't read PARAMS:switch_count");
  }
  char* token;
  token = strtok(switch_counts_str, ",");
  i = 0;
  while(token != NULL)
  {
    sscanf(token, "%d", &p->num_switches[i]);
    if(p->num_switches[i] <= 0)
    {
      tw_error(TW_LOC, "Invalid switch count  specified "
          "(%d at pos %d), exiting... ", p->num_switches[i], i);
    }
    i++;
    token = strtok(NULL,",");
  }

  char switch_radix_str[MAX_NAME_LENGTH];
  rc = configuration_get_value(&config, "PARAMS", "switch_radix", anno,
      switch_radix_str, MAX_NAME_LENGTH);
  if (rc == 0){
    tw_error(TW_LOC, "couldn't read PARAMS:switch_radix");
  }
  token = strtok(switch_radix_str, ",");
  i = 0;
  while(token != NULL)
  {
    sscanf(token, "%d", &p->switch_radix[i]);
    if(p->switch_radix[i] <= 0)
    {
      tw_error(TW_LOC, "Invalid switch radix  specified "
          "(%d at pos %d), exiting... ", p->switch_radix[i], i);
    }
    i++;
    token = strtok(NULL,",");
  }

Nikhil's avatar
Nikhil committed
760
761
762
763
764
  if(fmod(p->switch_radix[0],  p->tapering_ratio)) {
    tw_error(TW_LOC, "Tapering ratio does not fit the given radix; tapering + 1 should"
    " evenly divide the L0 switch radix\n");
  }

765
  p->Ns = p->switch_radix[0]/2;
Nikhil's avatar
Nikhil committed
766
767
768
769
770
771
772
773
774
775
776
  if(p->num_switches[0] % p->Ns) {
    if(!g_tw_mynode) printf("Number of switches has to be a multiple of switch radix/2 (%d);" 
        "next largest value is %d\n", p->Ns, (p->num_switches[0]/p->Ns + 1)*p->Ns);
    tw_error(TW_LOC, "Incorrect number of switches");
  }

  int num_terminals = p->num_switches[0] * (p->tapering_ratio - 1)*(p->switch_radix[0]/p->tapering_ratio);
  p->num_terminals = num_terminals;
    
  p->l0_set_size = p->switch_radix[0]/2;
  p->l0_term_size = (p->tapering_ratio - 1)*(p->switch_radix[0]/p->tapering_ratio);
777

778
  if(p->num_levels == 2) {
Nikhil's avatar
Nikhil committed
779
    p->num_switches[1] = p->num_switches[0]/p->tapering_ratio/2;
780
    p->switch_radix[1] = p->switch_radix[0];
Nikhil's avatar
Nikhil committed
781
782
    p->l1_set_size =  p->num_switches[1];
    p->l1_term_size = num_terminals;
783
  } else {
Nikhil's avatar
Nikhil committed
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
    p->switch_radix[1] = p->switch_radix[2] = p->switch_radix[0];
	  p->l1_set_size = p->switch_radix[0]/p->tapering_ratio;
    p->l1_term_size = p->l0_set_size * p->l0_term_size;
    p->Np = p->num_switches[0]/p->l0_set_size;
    p->num_switches[1] =  p->Np * p->l1_set_size;
    p->link_repetitions = p->switch_radix[0]/p->Np;
    if(p->l1_set_size % p->link_repetitions) {
      while(p->l1_set_size % p->link_repetitions) {
        p->link_repetitions--;
      }
    } 
    int halfPods = p->l1_set_size/p->link_repetitions;
    p->num_switches[2] = halfPods * p->Ns;
    if(!g_tw_mynode) printf("Pods %d; L2 pods %d; Link repetition:%d; l1_set_size %d\n", 
        p->Np, halfPods, p->link_repetitions, p->l1_set_size);
  }

  if(p->ft_type == 1 && p->num_levels == 3) {
    if(p->Np != p->switch_radix[0] && p->Np !=  p->switch_radix[0]/2) {
      if(!g_tw_mynode) {
        printf("ft_type 1 should be used for a system with %d or %d pods, which "
        "needs %d or %d L0 switches, respectively\n",  p->switch_radix[0], 
         p->switch_radix[0]/2,  p->switch_radix[0] *  p->switch_radix[0]/2,
          p->switch_radix[0]/2 *  p->switch_radix[0]/2);
      }
      tw_error(TW_LOC, "Incorrect number of switches for ft_type 1");
    }
811
812
  }

Nikhil's avatar
Nikhil committed
813
  for(int jj=0;jj<3 && !g_tw_mynode;jj++)
814
815
  {
    printf("num_switches[%d]=%d\n",jj,p->num_switches[jj]);
816
817
  }

Nikhil's avatar
Nikhil committed
818
  rc = configuration_get_value_int(&config, "PARAMS", "packet_size", anno,
819
      &p->packet_size);
Nikhil's avatar
Nikhil committed
820
  if(rc) {
821
    p->packet_size = 512;
Nikhil's avatar
Nikhil committed
822
823
824
825
826
827
828
829
830
  }
  if(!g_tw_mynode) printf("FT packet size is %d\n", p->packet_size);

  p->num_rails = 1;
  configuration_get_value_int(&config, "PARAMS", "num_rails", anno, &p->num_rails);
  if(!g_tw_mynode) printf("FT num rails is %d\n", p->num_rails);
  
  if(p->ft_type == 2) {
    p->ports_per_nic = 1;
Nikhil's avatar
Nikhil committed
831
832
  } else {
    p->ports_per_nic = p->num_rails;
833
  }
834

835
836
837
  p->router_delay = 50;
  configuration_get_value_double(&config, "PARAMS", "router_delay", anno,
      &p->router_delay);
Nikhil's avatar
Nikhil committed
838
  if(!g_tw_mynode) printf("FT router delay is %.1lf\n", p->router_delay);
839

840
841
842
843
  p->soft_delay = 1000;
  configuration_get_value_double(&config, "PARAMS", "soft_delay", anno,
      &p->soft_delay);

Nikhil's avatar
Nikhil committed
844
845
846
  rc = configuration_get_value_int(&config, "PARAMS", "vc_size", anno, &p->vc_size);
  if(rc) {
    p->vc_size = 8 * p->packet_size;
847
  }
Nikhil's avatar
Nikhil committed
848
  if(!g_tw_mynode) printf("FT buffer size links is %d\n", p->vc_size);
849

Nikhil's avatar
Nikhil committed
850
  rc = configuration_get_value_int(&config, "PARAMS", "cn_vc_size", anno,
851
      &p->cn_vc_size);
Nikhil's avatar
Nikhil committed
852
853
  if(rc) {
    p->cn_vc_size = 8 * p->packet_size;
854
  }
Nikhil's avatar
Nikhil committed
855
  if(!g_tw_mynode) printf("FT buffer size injection is %d\n", p->cn_vc_size);
856

857
  rc = configuration_get_value_int(&config, "PARAMS", "chunk_size", anno, &p->chunk_size);
Nikhil's avatar
Nikhil committed
858
859
860
  if(rc) {
    p->chunk_size = 512;
  }
861

Nikhil's avatar
Nikhil committed
862
863
864
865
866
867
868
869
870
871
872
  char routing_str[MAX_NAME_LENGTH];
  configuration_get_value(&config, "PARAMS", "routing", anno, routing_str,
      MAX_NAME_LENGTH);
  if(strcmp(routing_str, "static") == 0)
    p->routing = STATIC;
  else if(strcmp(routing_str, "adaptive")==0)
    p->routing = ADAPTIVE;
  else
  {
    p->routing = ADAPTIVE;
  }
Nikhil's avatar
Nikhil committed
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
  if(!g_tw_mynode) printf("FT routing is %d\n", p->routing);
  
  char rail_select_str[MAX_NAME_LENGTH];
  configuration_get_value(&config, "PARAMS", "rail_select", anno, rail_select_str,
      MAX_NAME_LENGTH);
  if(strcmp(rail_select_str, "dedicated") == 0)
    p->rail_select = RAIL_DEDICATED;
  else if(strcmp(rail_select_str, "adaptive")==0)
    p->rail_select = RAIL_ADAPTIVE;
  else {
    p->rail_select = RAIL_DEDICATED;
  }
  if(!g_tw_mynode) printf("FT rail selection is %d\n", p->rail_select);

  p->rail_size_limit = 32768;
  configuration_get_value_int(&config, "PARAMS", "rail_select_limit", anno,
      &p->rail_size_limit);
  if(!g_tw_mynode) printf("FT rail select limit  is %d\n", p->rail_size_limit);
Nikhil's avatar
Nikhil committed
891
892
893
  
  configuration_get_value_int(&config, "PARAMS", "dump_topo", anno,
      &dump_topo);
894

Nikhil's avatar
Nikhil committed
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
  routing_folder[0] = '\0';
  rc = configuration_get_value(&config, "PARAMS", "routing_folder", anno, routing_folder,
      MAX_NAME_LENGTH);

  if(routing_folder[0] == '\0') {
    if(dump_topo || p->routing == STATIC) {
      tw_error(TW_LOC, "routing_folder has to be provided with dump_topo || static routing");
    }
  }
 
  dot_file_p[0] = '\0'; 
  rc = configuration_get_value(&config, "PARAMS", "dot_file", anno, dot_file_p,
      MAX_NAME_LENGTH);
  
  if(dot_file_p[0] == '\0') {
    if(dump_topo) {
      tw_error(TW_LOC, "dot_file has to be provided with dump_topo");
    }
  }
  
Nikhil's avatar
Nikhil committed
915
  rc = configuration_get_value_double(&config, "PARAMS", "link_bandwidth", anno,
916
      &p->link_bandwidth);
Nikhil's avatar
Nikhil committed
917
  if(rc) {
918
919
920
    p->link_bandwidth = 5;
  }

Nikhil's avatar
Nikhil committed
921
  rc = configuration_get_value_double(&config, "PARAMS", "cn_bandwidth", anno,
922
923
924
925
      &p->cn_bandwidth);
  if(!p->cn_bandwidth) {
    p->cn_bandwidth = 5;
  }
Nikhil's avatar
Nikhil committed
926
927
928
  
  if(!g_tw_mynode) printf("FT bandwidths link %.1lf node %.1lf\n", 
      p->link_bandwidth, p->cn_bandwidth);
929

930
931
932
933
#if FATTREE_DEBUG
  printf("l1_set_size:%d l1_term_size:%d\n",p->l1_set_size,p->l1_term_size);
#endif

934
935
936
937
938
939
940
941
942
943
944
  p->cn_delay = (1.0 / p->cn_bandwidth);
  p->head_delay = (1.0 / p->link_bandwidth);
  p->credit_delay = (1.0 / p->link_bandwidth) * 8; //assume 8 bytes packet
}

static void fattree_configure(){
  anno_map = codes_mapping_get_lp_anno_map(LP_CONFIG_NM);
  assert(anno_map);
  num_params = anno_map->num_annos + (anno_map->has_unanno_lp > 0);
  all_params = malloc(num_params * sizeof(*all_params));

Noah Wolfe's avatar
Noah Wolfe committed
945
946
  for (int i = 0; i < anno_map->num_annos; i++){
    const char * anno = anno_map->annotations[i].ptr;
947
948
949
950
951
    fattree_read_config(anno, &all_params[i]);
  }
  if (anno_map->has_unanno_lp > 0){
    fattree_read_config(NULL, &all_params[anno_map->num_annos]);
  }
952
953
954
#ifdef ENABLE_CORTEX
  model_net_topology = fattree_cortex_topology;
#endif
955
956
957
958
959
}

/* initialize a fattree compute node terminal */
void ft_terminal_init( ft_terminal_state * s, tw_lp * lp )
{
960
    s->packet_gen = 0;
961
962
    s->packet_fin = 0;

963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
    char anno[MAX_NAME_LENGTH];

    if(def_gname_set == 0) {
      def_gname_set = 1;
      codes_mapping_get_lp_info(0, def_group_name, &mapping_grp_id, NULL,
          &mapping_type_id, anno, &mapping_rep_id, &mapping_offset);
    }

    // Assign the global switch ID
    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,
           s->anno, 0);

Nikhil's avatar
Nikhil committed
986
   if(s->params->ft_type == 2) {
Nikhil's avatar
Nikhil committed
987
    num_lps /= s->params->num_rails;
988
   }
Nikhil's avatar
Nikhil committed
989
990
991
992
993
994

   if(num_lps != s->params->l0_term_size) {
     tw_error(TW_LOC, "Number of NICs per repetition per rail has to be equal to "
         "%d, not the given value of %d\n", s->params->l0_term_size, num_lps);
   }
  
Nikhil's avatar
Nikhil committed
995
   if(s->params->ft_type == 2) {
Nikhil's avatar
Nikhil committed
996
997
998
999
1000
1001
1002
1003
    s->terminal_id = (mapping_rep_id * num_lps) + (mapping_offset/s->params->num_rails);
    s->rail_id = (mapping_offset % s->params->num_rails);
   } else {
    s->terminal_id = (mapping_rep_id * num_lps) + mapping_offset;
    s->rail_id = 0;
   }
   s->switch_id = s->terminal_id / s->params->l0_term_size;
   s->switch_lp = (tw_lpid*)malloc(s->params->ports_per_nic * sizeof(tw_lpid));
Nikhil's avatar
Nikhil committed
1004
   if(s->params->ft_type == 2) {
Nikhil's avatar
Nikhil committed
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
     codes_mapping_get_lp_id(lp_group_name, "fattree_switch", NULL, 1,
         s->switch_id, 0 + s->params->num_levels * s->rail_id, &s->switch_lp[0]);
   } else {
     for(int i = 0; i < s->params->ports_per_nic; i++) {
       codes_mapping_get_lp_id(lp_group_name, "fattree_switch", NULL, 1,
           s->switch_id, 0 + s->params->num_levels * i, &s->switch_lp[i]);
     }
   }
   s->terminal_available_time = (tw_stime*) malloc(s->params->ports_per_nic * sizeof(tw_stime));
   s->vc_occupancy = (int*) malloc(s->params->ports_per_nic * sizeof(int));
   s->terminal_length = (int*) malloc(s->params->ports_per_nic * sizeof(int));
   s->in_send_loop = (int*) malloc(s->params->ports_per_nic * sizeof(int));
   s->issueIdle = (int*) malloc(s->params->ports_per_nic * sizeof(int));
1018
   s->terminal_msgs =
Nikhil's avatar
Nikhil committed
1019
     (fattree_message_list**)malloc(s->params->ports_per_nic*sizeof(fattree_message_list*));
1020
   s->terminal_msgs_tail =
Nikhil's avatar
Nikhil committed
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
     (fattree_message_list**)malloc(s->params->ports_per_nic*sizeof(fattree_message_list*));
   s->last_buf_full = (tw_stime*) malloc(s->params->ports_per_nic * sizeof(tw_stime));
   s->busy_time = (tw_stime*) malloc(s->params->ports_per_nic * sizeof(tw_stime));
   for(int i = 0; i < s->params->ports_per_nic; i++) {
     s->terminal_available_time[i] = 0.0;
     s->vc_occupancy[i] = 0;
     s->terminal_msgs[i] = NULL;
     s->terminal_msgs_tail[i] = NULL;
     s->terminal_length[i] = 0;
     s->in_send_loop[i] = 0;
     s->issueIdle[i] = 0;
     s->last_buf_full[i] = 0;
     s->busy_time[i] = 0;
   }
   s->packet_counter = 0;
1036
1037
1038
1039
1040
1041
   s->finished_msgs = 0;
   s->finished_chunks = 0;
   s->finished_packets = 0;
   s->total_time = 0.0;
   s->total_msg_size = 0;

Nikhil's avatar
Nikhil committed
1042
1043
1044
#if FATTREE_DEBUG
   printf("I am terminal %d (%llu), connected to switch %d in rail id %d\n", s->terminal_id,
       LLU(lp->gid), s->switch_id, s->rail_id);
1045
#endif
Noah Wolfe's avatar
Noah Wolfe committed
1046
1047
1048

   rc_stack_create(&s->st);

1049
1050
1051
   s->rank_tbl = NULL;
   //if(!s->rank_tbl)
   //  tw_error(TW_LOC, "\n Hash table not initialized! ");
1052

Nikhil's avatar
Nikhil committed
1053
1054
1055
1056
   /* dump partial topology into DOT format
    * skip term2sw link part, because we are missing the remote switch port
    * in this stage of the code
    */
Nikhil's avatar
Nikhil committed
1057
   if(!dot_file && !s->rail_id)
Nikhil's avatar
Nikhil committed
1058
1059
1060
1061
     dot_write_open_file(&dot_file);
   dot_write_term_info(s, dot_file);

   /* ensure the DOT file is out before reading it with external tools */
Nikhil's avatar
Nikhil committed
1062
   if(dot_file && !s->rail_id)
Nikhil's avatar
Nikhil committed
1063
1064
     fflush(dot_file);

1065
1066
1067
1068
1069
1070
   return;
}

/* sets up the switch */
void switch_init(switch_state * r, tw_lp * lp)
{
1071

1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
  char anno[MAX_NAME_LENGTH];

  if(def_gname_set == 0) {
    def_gname_set = 1;
    codes_mapping_get_lp_info(0, def_group_name, &mapping_grp_id, NULL,
        &mapping_type_id, anno, &mapping_rep_id, &mapping_offset);
  }

  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
  fattree_param *p = r->params;
Nikhil's avatar
Nikhil committed
1094
1095
1096
  if(mapping_rep_id >= p->num_switches[mapping_offset % p->num_levels]) {
    r->unused = 1;
    return;
1097
1098
1099
1100
  }

  r->unused = 0;

Nikhil's avatar
Nikhil committed
1101
1102
1103
1104
1105
1106
  if((mapping_offset % p->num_levels) == 0) {
    r->switch_id = mapping_rep_id;
  } else if((mapping_offset % p->num_levels) ==  1) {
    r->switch_id = mapping_rep_id + p->num_switches[0];
  } else {
    r->switch_id = mapping_rep_id + p->num_switches[0] + p->num_switches[1];
1107
  }
Nikhil's avatar
Nikhil committed
1108
  r->rail_id = mapping_offset / p->num_levels;
1109

Nikhil's avatar
Nikhil committed
1110
  r->switch_level = mapping_offset % p->num_levels;
1111
1112
1113

  r->radix = p->switch_radix[r->switch_level];

1114
  r->next_output_available_time = (tw_stime*) malloc (r->radix *
1115
1116
1117
1118
1119
      sizeof(tw_stime));
  r->vc_occupancy = (int*) malloc (r->radix * sizeof(int));
  r->in_send_loop = (int*) malloc (r->radix * sizeof(int));
  r->link_traffic = (int64_t*) malloc (r->radix * sizeof(int64_t));
  r->port_connections = (tw_lpid*) malloc (r->radix * sizeof(tw_lpid));
1120
  r->pending_msgs =
1121
    (fattree_message_list**)malloc(r->radix * sizeof(fattree_message_list*));
1122
  r->pending_msgs_tail =
1123
    (fattree_message_list**)malloc(r->radix * sizeof(fattree_message_list*));
1124
  r->queued_msgs =
1125
    (fattree_message_list**)malloc(r->radix * sizeof(fattree_message_list*));
1126
  r->queued_msgs_tail =
1127
1128
    (fattree_message_list**)malloc(r->radix * sizeof(fattree_message_list*));
  r->queued_length = (int*)malloc(r->radix * sizeof(int));
Nikhil's avatar
Nikhil committed
1129
  r->lft = NULL;
1130

1131
1132
1133
1134
  r->last_buf_full = (tw_stime*)malloc(r->radix * sizeof(tw_stime));
  r->busy_time = (tw_stime*)malloc(r->radix * sizeof(tw_stime));
  r->busy_time_sample = (tw_stime*)malloc(r->radix * sizeof(tw_stime));

Noah Wolfe's avatar
Noah Wolfe committed
1135
1136
  rc_stack_create(&r->st);

1137
1138
1139
  for(int i = 0; i < r->radix; i++)
  {
    // Set credit & switch occupancy
1140
1141
1142
    r->last_buf_full[i] = 0.0;
    r->busy_time[i] = 0.0;
    r->busy_time_sample[i] = 0.0;
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
    r->next_output_available_time[i] = 0;
    r->vc_occupancy[i] = 0;
    r->in_send_loop[i] = 0;
    r->link_traffic[i] = 0;
    r->pending_msgs[i] = NULL;
    r->pending_msgs_tail[i] = NULL;
    r->queued_msgs[i] = NULL;
    r->queued_msgs_tail[i] = NULL;
    r->queued_length[i] = 0;
  }

Nikhil's avatar
Nikhil committed
1154
  /* dump partial topology info into DOT format (switch radix, guid, ...) */
Nikhil's avatar
Nikhil committed
1155
  if(!dot_file && !r->rail_id)
Nikhil's avatar
Nikhil committed
1156
    dot_write_open_file(&dot_file);
1157
  dot_write_switch_info(r, dot_file);
Nikhil's avatar
Nikhil committed
1158

1159
1160
#if FATTREE_CONNECTIONS || FATTREE_DEBUG
    tw_lpid next_switch_lid;
1161
1162
	int written = 0;
    int written_2 = 0;
1163
#endif
1164

1165
1166
1167
  //set lps connected to each port
  r->num_cons = 0;
  r->num_lcons = 0;
Nikhil's avatar
Nikhil committed
1168
1169
1170
#if FATTREE_DEBUG
  printf("I am switch %d (%llu), level %d, radix %d, rail id %d\n", r->switch_id,
    LLU(lp->gid), r->switch_level, r->radix, r->rail_id);
1171
1172
1173
#endif
  //if at level 0, first half ports go to terminals
  if(r->switch_level == 0) {
Nikhil's avatar
Nikhil committed
1174
    int term_rails, term_railid;
Nikhil's avatar
Nikhil committed
1175
    if(p->ft_type == 2) {
Nikhil's avatar
Nikhil committed
1176
1177
1178
1179
1180
1181
1182
1183
      term_rails = p->num_rails;
      term_railid = r->rail_id;
    } else {
      term_rails = 1;
      term_railid = 0;
    }
    int start_terminal = r->switch_id * p->l0_term_size;
    int end_terminal = start_terminal + p->l0_term_size;
1184
1185
    for(int term = start_terminal; term < end_terminal; term++) {
      tw_lpid nextTerm;
Nikhil's avatar
Nikhil committed
1186
1187
      int rep = term / p->l0_term_size;
      int off = (term % p->l0_term_size) * term_rails + term_railid;
1188
1189
1190
      codes_mapping_get_lp_id(def_group_name, LP_CONFIG_NM, NULL, 1,
          rep, off, &nextTerm);
      r->port_connections[r->num_cons++] = nextTerm;
1191
#if FATTREE_CONNECTIONS
Nikhil's avatar
Nikhil committed
1192
	    written += sprintf(r->output_buf + written, "%u, %llu, ", r->switch_id+p->num_terminals,LLU(codes_mapping_get_lp_relative_id(nextTerm,0,0)/term_rails));
1193
#endif
1194
1195
      r->num_lcons++;
#if FATTREE_DEBUG
Nikhil's avatar
Nikhil committed
1196
1197
      printf("L0->term I am switch %d, connect to terminal %d (%llu) at port %d, rail id %d yes collecting\n",
          r->switch_id, term, LLU(nextTerm), r->num_cons - 1, r->rail_id);
1198
#endif
Nikhil's avatar
Nikhil committed
1199
      /* write sw2term links and (reverse link, too) into DOT file */
Nikhil's avatar
Nikhil committed
1200
1201
1202
      if(!r->rail_id) {
        dot_write_sw2term_link(r->switch_level, r->switch_id, r->num_cons - 1, term, 1, dot_file);
      }
1203
1204
1205
1206
    }
    r->start_lneigh = start_terminal;
    r->end_lneigh = end_terminal;
    r->con_per_lneigh = 1;
Nikhil's avatar
Nikhil committed
1207
    assert(r->num_lcons == p->l0_term_size);
1208
1209
1210
    int l1_set;
    if(p->num_levels == 2) {
      l1_set = 0;
Nikhil's avatar
Nikhil committed
1211
      r->con_per_uneigh = 2;
1212
    } else {
Nikhil's avatar
Nikhil committed
1213
      l1_set = r->switch_id / p->l0_set_size;
Nikhil's avatar
Nikhil committed
1214
      r->con_per_uneigh = 1;
1215
1216
1217
1218
1219
    }
    int l1_base = l1_set * p->l1_set_size;
    r->start_uneigh = p->num_switches[0] + l1_base;
    for(int l1 = 0; l1 < p->l1_set_size; l1++) {
      tw_lpid nextTerm;
Nikhil's avatar
Nikhil committed
1220
      assert(l1_base < p->num_switches[1]);
1221
      codes_mapping_get_lp_id(lp_group_name, "fattree_switch", NULL, 1,
Nikhil's avatar
Nikhil committed
1222
          l1_base, 1 + r->rail_id * p->num_levels, &nextTerm);
1223
1224
      for(int con = 0; con < r->con_per_uneigh; con++) {
        r->port_connections[r->num_cons++] = nextTerm;
Nikhil's avatar
Nikhil committed
1225
#if FATTREE_CONNECTIONS
1226
1227
        codes_mapping_get_lp_info(nextTerm, lp_group_name, &mapping_grp_id, NULL,
            &mapping_type_id, anno, &mapping_rep_id, &mapping_offset);
Nikhil's avatar
Nikhil committed
1228
1229
        next_switch_lid = mapping_rep_id +  p->num_switches[0];
	      written += sprintf(r->output_buf + written, "%u, %llu, ", r->switch_id+p->num_terminals,LLU(next_switch_lid)+p->num_terminals);
1230
#endif
1231
#if FATTREE_DEBUG
Nikhil's avatar
Nikhil committed
1232
1233
    printf("L0->L1 I am switch %d, connect to upper switch %d L1 (%llu) rel_id:%llu at port %d, rail id %d yes collecting\n",
          r->switch_id, l1_base, LLU(nextTerm), LLU(next_switch_lid), r->num_cons - 1, r->rail_id);
1234
#endif
Nikhil's avatar
Nikhil committed
1235
        /* write all inter switch links to DOT file (initialized before) */
Nikhil's avatar
Nikhil committed
1236
1237
1238
1239
        if(!r->rail_id) {
          dot_write_sw2sw_link(r->switch_level, r->switch_id, r->num_cons - 1,
              r->switch_level + 1, p->num_switches[0] + l1_base, -1, dot_file);
        }
1240
1241
1242
1243
      }
      l1_base++;
    }
  } else if (r->switch_level == 1) {
Nikhil's avatar
Nikhil committed
1244
    int l0_base;
1245
1246
1247
1248
    if(p->num_levels == 2) {
      l0_base = 0;
      r->start_lneigh = 0;
      r->end_lneigh = p->num_switches[0];
Nikhil's avatar
Nikhil committed
1249
      r->con_per_lneigh = 2;
1250
1251
    } else {
      l0_base = ((r->switch_id - p->num_switches[0]) / p->l1_set_size) *
Nikhil's avatar
Nikhil committed
1252
        p->l0_set_size;
1253
      r->start_lneigh = l0_base;
Nikhil's avatar
Nikhil committed
1254
      r->end_lneigh = l0_base + p->l0_set_size;
Nikhil's avatar
Nikhil committed
1255
      r->con_per_lneigh = 1;
1256
    }
Nikhil's avatar
Nikhil committed
1257
    for(int l0 = 0; l0 < p->l0_set_size; l0++) {
1258
1259
      tw_lpid nextTerm;
      codes_mapping_get_lp_id(def_group_name, "fattree_switch", NULL, 1,
Nikhil's avatar
Nikhil committed
1260
          l0_base, 0 + r->rail_id * p->num_levels, &nextTerm);
1261
1262
      for(int con = 0; con < r->con_per_lneigh; con++) {
        r->port_connections[r->num_cons++] = nextTerm;
Nikhil's avatar
Nikhil committed
1263
#if FATTREE_CONNECTIONS
1264
1265
        codes_mapping_get_lp_info(nextTerm, lp_group_name, &mapping_grp_id, NULL,
            &mapping_type_id, anno, &mapping_rep_id, &mapping_offset);
Nikhil's avatar
Nikhil committed
1266
        next_switch_lid = mapping_rep_id;
1267
1268
        written_2 += sprintf(r->output_buf2 + written_2, "%u, %llu, ", r->switch_id+p->num_terminals,LLU(next_switch_lid)+p->num_terminals);
#endif
1269
1270
        r->num_lcons++;
#if FATTREE_DEBUG
Nikhil's avatar
Nikhil committed
1271
1272
        printf("L1->L0 I am switch %d, connect to switch %d L0 (%llu) rel_id:%llu at port %d, rail id %d not collecting\n",
            r->switch_id, l0_base, LLU(nextTerm), LLU(next_switch_lid), r->num_cons - 1, r->rail_id);
1273
#endif
Nikhil's avatar
Nikhil committed
1274
        /* write all inter switch links to DOT file (initialized before) */
Nikhil's avatar
Nikhil committed
1275
1276
1277
1278
        if(!r->rail_id) {
          dot_write_sw2sw_link(r->switch_level, r->switch_id, r->num_cons - 1,
              r->switch_level - 1, l0_base, -1, dot_file);
        }
1279
1280
1281
1282
      }
      l0_base++;
    }
    if(p->num_levels == 3) {
Nikhil's avatar
Nikhil committed
1283
1284
1285
1286
      int rep = p->link_repetitions;
      int l2 = ((r->switch_id - p->num_switches[0]) % p->l1_set_size)/rep * p->Ns;
      r->con_per_uneigh = 1;
      for(int off = 0; off < p->Ns; off++) {
1287
        tw_lpid nextTerm;
Nikhil's avatar
Nikhil committed
1288
        assert(l2 + off < p->num_switches[2]);
1289
        codes_mapping_get_lp_id(lp_group_name, "fattree_switch", NULL, 1,
Nikhil's avatar
Nikhil committed
1290
1291
            l2 + off, 2 + r->rail_id * p->num_levels, &nextTerm);
        for(int con = 0; con < r->con_per_uneigh; con++) {