model-net-synthetic.c 10.6 KB
Newer Older
1 2 3 4 5 6 7 8
/*
 * Copyright (C) 2015 University of Chicago.
 * See COPYRIGHT notice in top-level directory.
 *
 */

/*
* The test program generates some synthetic traffic patterns for the model-net network models.
9
* currently it only support the dragonfly network model uniform random and nearest neighbor traffic patterns.
10 11 12 13 14 15 16 17 18
*/

#include "codes/model-net.h"
#include "codes/lp-io.h"
#include "codes/codes.h"
#include "codes/codes_mapping.h"
#include "codes/configuration.h"
#include "codes/lp-type-lookup.h"

19
#define PAYLOAD_SZ 2048
20 21 22 23 24 25 26

static int net_id = 0;
static int traffic = 1;
static double arrival_time = 1000.0;

/* whether to pull instead of push */
static int num_servers_per_rep = 0;
27 28 29 30
static int num_routers_per_grp = 0;
static int num_nodes_per_grp = 0;
static int num_groups = 0;
static int num_nodes = 0;
31

32 33 34 35 36
static char lp_io_dir[256] = {'\0'};
static lp_io_handle io_handle;
static unsigned int lp_io_use_suffix = 0;
static int do_lp_io = 0;
static int num_msgs = 20;
37 38
static unsigned int sampling_interval = 800000;
static unsigned int sampling_end_time = 1600000;
39

40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58
typedef struct svr_msg svr_msg;
typedef struct svr_state svr_state;

/* global variables for codes mapping */
static char group_name[MAX_NAME_LENGTH];
static char lp_type_name[MAX_NAME_LENGTH];
static int group_index, lp_type_index, rep_id, offset;

/* type of events */
enum svr_event
{
    KICKOFF,	   /* kickoff event */
    REMOTE,        /* remote event */
    LOCAL      /* local event */
};

/* type of synthetic traffic */
enum TRAFFIC
{
59 60 61
	UNIFORM = 1, /* sends message to a randomly selected node */
	NEAREST_GROUP = 2, /* sends message to the node connected to the neighboring router */
	NEAREST_NEIGHBOR = 3 /* sends message to the next node (potentially connected to the same router) */
62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109
};

struct svr_state
{
    int msg_sent_count;   /* requests sent */
    int msg_recvd_count;  /* requests recvd */
    int local_recvd_count; /* number of local messages received */
    tw_stime start_ts;    /* time that we started sending requests */
    tw_stime end_ts;      /* time that we ended sending requests */
};

struct svr_msg
{
    enum svr_event svr_event_type;
    tw_lpid src;          /* source of this request or ack */
    int incremented_flag; /* helper for reverse computation */
};

static void svr_init(
    svr_state * ns,
    tw_lp * lp);
static void svr_event(
    svr_state * ns,
    tw_bf * b,
    svr_msg * m,
    tw_lp * lp);
static void svr_rev_event(
    svr_state * ns,
    tw_bf * b,
    svr_msg * m,
    tw_lp * lp);
static void svr_finalize(
    svr_state * ns,
    tw_lp * lp);

tw_lptype svr_lp = {
    (init_f) svr_init,
    (pre_run_f) NULL,
    (event_f) svr_event,
    (revent_f) svr_rev_event,
    (final_f)  svr_finalize,
    (map_f) codes_mapping,
    sizeof(svr_state),
};

const tw_optdef app_opt [] =
{
        TWOPT_GROUP("Model net synthetic traffic " ),
110 111
    	TWOPT_UINT("traffic", traffic, "UNIFORM RANDOM=1, NEAREST NEIGHBOR=2 "),
    	TWOPT_UINT("num_messages", num_msgs, "Number of messages to be generated per terminal "),
112 113
    	TWOPT_UINT("sampling-interval", sampling_interval, "the sampling interval "),
    	TWOPT_UINT("sampling-end-time", sampling_end_time, "sampling end time "),
114 115 116
	    TWOPT_STIME("arrival_time", arrival_time, "INTER-ARRIVAL TIME"),
        TWOPT_CHAR("lp-io-dir", lp_io_dir, "Where to place io output (unspecified -> no output"),
        TWOPT_UINT("lp-io-use-suffix", lp_io_use_suffix, "Whether to append uniq suffix to lp-io directory (default 0)"),
117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142
        TWOPT_END()
};

const tw_lptype* svr_get_lp_type()
{
            return(&svr_lp);
}

static void svr_add_lp_type()
{
  lp_type_register("server", svr_get_lp_type());
}

static void issue_event(
    svr_state * ns,
    tw_lp * lp)
{
    tw_event *e;
    svr_msg *m;
    tw_stime kickoff_time;

    /* each server sends a dummy event to itself that will kick off the real
     * simulation
     */

    /* skew each kickoff event slightly to help avoid event ties later on */
143
    kickoff_time = 1.1 * g_tw_lookahead + tw_rand_exponential(lp->rng, arrival_time);
144 145 146 147 148 149 150 151 152 153 154

    e = tw_event_new(lp->gid, kickoff_time, lp);
    m = tw_event_data(e);
    m->svr_event_type = KICKOFF;
    tw_event_send(e);
}

static void svr_init(
    svr_state * ns,
    tw_lp * lp)
{
155 156
    ns->start_ts = 0.0;

157 158 159 160 161 162 163 164 165 166
    issue_event(ns, lp);
    return;
}

static void handle_kickoff_rev_event(
            svr_state * ns,
            tw_bf * b,
            svr_msg * m,
            tw_lp * lp)
{
167 168 169
    if(m->incremented_flag)
        return;

170 171 172 173
    if(b->c1)
        tw_rand_reverse_unif(lp->rng);
	
    model_net_event_rc(net_id, lp, PAYLOAD_SZ);
174
	ns->msg_sent_count--;
175
    tw_rand_reverse_unif(lp->rng);
176 177 178 179 180 181 182
}	
static void handle_kickoff_event(
	    svr_state * ns,
	    tw_bf * b,
	    svr_msg * m,
	    tw_lp * lp)
{
183
    if(ns->msg_sent_count >= num_msgs)
184 185 186 187
    {
        m->incremented_flag = 1;
        return;
    }
188 189 190 191

    m->incremented_flag = 0;

    char anno[MAX_NAME_LENGTH];
192 193 194 195 196 197 198 199 200 201 202 203 204
    tw_lpid local_dest = -1, global_dest = -1;
   
    svr_msg * m_local = malloc(sizeof(svr_msg));
    svr_msg * m_remote = malloc(sizeof(svr_msg));

    m_local->svr_event_type = LOCAL;
    m_local->src = lp->gid;

    memcpy(m_remote, m_local, sizeof(svr_msg));
    m_remote->svr_event_type = REMOTE;

    assert(net_id == DRAGONFLY); /* only supported for dragonfly model right now. */
    ns->start_ts = tw_now(lp);
205 206
    codes_mapping_get_lp_info(lp->gid, group_name, &group_index, lp_type_name, &lp_type_index, anno, &rep_id, &offset);
    int local_id = codes_mapping_get_lp_relative_id(lp->gid, 0, 0);
207

208 209 210
   /* in case of uniform random traffic, send to a random destination. */
   if(traffic == UNIFORM)
   {
211
    b->c1 = 1;
212 213
   	local_dest = tw_rand_integer(lp->rng, 0, num_nodes - 1);
   }
214
   else if(traffic == NEAREST_GROUP)
215
   {
216 217
	local_dest = (local_id + num_nodes_per_grp) % num_nodes;
	//printf("\n LP %ld sending to %ld num nodes %d ", local_id, local_dest, num_nodes);
218
   }	
219 220
   else if(traffic == NEAREST_NEIGHBOR)
   {
221
	local_dest =  (local_id + 1) % num_nodes;
222 223
//	 printf("\n LP %ld sending to %ld num nodes %d ", rep_id * 2 + offset, local_dest, num_nodes);
   }
224
   assert(local_dest < num_nodes);
225 226
//   codes_mapping_get_lp_id(group_name, lp_type_name, anno, 1, local_dest / num_servers_per_rep, local_dest % num_servers_per_rep, &global_dest);
   global_dest = codes_mapping_get_lpid_from_relative(local_dest, group_name, lp_type_name, NULL, 0);
227 228
   ns->msg_sent_count++;
   model_net_event(net_id, "test", global_dest, PAYLOAD_SZ, 0.0, sizeof(svr_msg), (const void*)m_remote, sizeof(svr_msg), (const void*)m_local, lp);
229
    
230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368
   issue_event(ns, lp);
   return;
}

static void handle_remote_rev_event(
            svr_state * ns,     
            tw_bf * b,
            svr_msg * m,
            tw_lp * lp)
{
        ns->msg_recvd_count--;
}

static void handle_remote_event(
	    svr_state * ns,
	    tw_bf * b,
	    svr_msg * m,
	    tw_lp * lp)
{
	ns->msg_recvd_count++;
}

static void handle_local_rev_event(
                svr_state * ns,
                tw_bf * b,
                svr_msg * m,
                tw_lp * lp)
{
	ns->local_recvd_count--;
}

static void handle_local_event(
                svr_state * ns,
                tw_bf * b,
                svr_msg * m,
                tw_lp * lp)
{
    ns->local_recvd_count++;
}
/* convert ns to seconds */
static tw_stime ns_to_s(tw_stime ns)
{
    return(ns / (1000.0 * 1000.0 * 1000.0));
}

/* convert seconds to ns */
static tw_stime s_to_ns(tw_stime ns)
{
    return(ns * (1000.0 * 1000.0 * 1000.0));
}

static void svr_finalize(
    svr_state * ns,
    tw_lp * lp)
{
    ns->end_ts = tw_now(lp);

    printf("server %llu recvd %d bytes in %f seconds, %f MiB/s sent_count %d recvd_count %d local_count %d \n", (unsigned long long)lp->gid, PAYLOAD_SZ*ns->msg_recvd_count, ns_to_s(ns->end_ts-ns->start_ts),
        ((double)(PAYLOAD_SZ*ns->msg_sent_count)/(double)(1024*1024)/ns_to_s(ns->end_ts-ns->start_ts)), ns->msg_sent_count, ns->msg_recvd_count, ns->local_recvd_count);
    return;
}

static void svr_rev_event(
    svr_state * ns,
    tw_bf * b,
    svr_msg * m,
    tw_lp * lp)
{
    switch (m->svr_event_type)
    {
	case REMOTE:
		handle_remote_rev_event(ns, b, m, lp);
		break;
	case LOCAL:
		handle_local_rev_event(ns, b, m, lp);
		break;
	case KICKOFF:
		handle_kickoff_rev_event(ns, b, m, lp);
		break;
	default:
		assert(0);
		break;
    }
}

static void svr_event(
    svr_state * ns,
    tw_bf * b,
    svr_msg * m,
    tw_lp * lp)
{
   switch (m->svr_event_type)
    {
        case REMOTE:
            handle_remote_event(ns, b, m, lp);
            break;
        case LOCAL:
            handle_local_event(ns, b, m, lp);
            break;
	case KICKOFF:
	    handle_kickoff_event(ns, b, m, lp);
	    break;
        default:
            printf("\n Invalid message type %d ", m->svr_event_type);
            assert(0);
        break;
    }
}

int main(
    int argc,
    char **argv)
{
    int nprocs;
    int rank;
    int num_nets;
    int *net_ids;

    tw_opt_add(app_opt);
    tw_init(&argc, &argv);

    if(argc < 2)
    {
            printf("\n Usage: mpirun <args> --sync=2/3 mapping_file_name.conf (optional --nkp) ");
            MPI_Finalize();
            return 0;
    }

    MPI_Comm_rank(MPI_COMM_WORLD, &rank);
    MPI_Comm_size(MPI_COMM_WORLD, &nprocs);

    configuration_load(argv[2], MPI_COMM_WORLD, &config);

    model_net_register();
    svr_add_lp_type();

    codes_mapping_setup();

    net_ids = model_net_configure(&num_nets);
369
    //assert(num_nets==1);
370 371 372
    net_id = *net_ids;
    free(net_ids);

373 374
    /* 5 days of simulation time */
    g_tw_ts_end = s_to_ns(5 * 24 * 60 * 60);
375
    model_net_enable_sampling(sampling_interval, sampling_end_time);
376

377
    if(net_id != DRAGONFLY)
378
    {
379 380 381
	printf("\n The test works with dragonfly model configuration only! ");
        MPI_Finalize();
        return 0;
382
    }
383 384
    num_servers_per_rep = codes_mapping_get_lp_count("MODELNET_GRP", 1, "server",
            NULL, 1);
385
    configuration_get_value_int(&config, "PARAMS", "num_routers", NULL, &num_routers_per_grp);
386 387 388 389
    
    num_groups = (num_routers_per_grp * (num_routers_per_grp/2) + 1);
    num_nodes = num_groups * num_routers_per_grp * (num_routers_per_grp / 2);
    num_nodes_per_grp = num_routers_per_grp * (num_routers_per_grp / 2);
390

Misbah Mubarak's avatar
Misbah Mubarak committed
391 392
    assert(num_nodes);

393
    if(lp_io_dir[0])
394
    {
395 396 397 398
        do_lp_io = 1;
        int flags = lp_io_use_suffix ? LP_IO_UNIQ_SUFFIX : 0;
        int ret = lp_io_prepare(lp_io_dir, flags, &io_handle, MPI_COMM_WORLD);
        assert(ret == 0 || !"lp_io_prepare failure");
399 400
    }
    tw_run();
401 402 403
    if (do_lp_io){
        int ret = lp_io_flush(io_handle, MPI_COMM_WORLD);
        assert(ret == 0 || !"lp_io_flush failure");
404
    }
405
    model_net_report_stats(net_id);
406 407 408 409
    tw_end();
    return 0;
}

Jonathan Jenkins's avatar
Jonathan Jenkins committed
410 411 412 413 414 415 416 417
/*
 * Local variables:
 *  c-indent-level: 4
 *  c-basic-offset: 4
 * End:
 *
 * vim: ft=c ts=8 sts=4 sw=4 expandtab
 */