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dragonfly-custom.C 122 KB
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/*
 * 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"
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#include "codes/net/dragonfly-custom.h"
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#include "sys/file.h"
#include "codes/quickhash.h"
#include "codes/rc-stack.h"
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#include <vector>
#include <map>
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#include <set>
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#ifdef ENABLE_CORTEX
#include <cortex/cortex.h>
#include <cortex/topology.h>
#endif
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#define DUMP_CONNECTIONS 0
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#define CREDIT_SIZE 8
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#define DFLY_HASH_TABLE_SIZE 4999
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// debugging parameters
#define TRACK -1
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#define TRACK_PKT -1
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#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])
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using namespace std;
struct Link {
  int offset, type;
};
struct bLink {
  int offset, dest;
};
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/* 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)*/
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vector< map< int, vector<Link> > > intraGroupLinks;
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/* contains mapping between source router and destination group via link (link
 * has dest ID)*/
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vector< map< int, vector<bLink> > > interGroupLinks;
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/*MM: Maintains a list of routers connecting the source and destination groups */
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vector< vector< vector<int> > > connectionList;

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

struct InterGroupLink {
  int src, dest;
};

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#ifdef ENABLE_CORTEX
/* This structure is defined at the end of the file */
extern "C" {
extern cortex_topology dragonfly_custom_cortex_topology;
}
#endif
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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;
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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 */
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static int router_magic_num = 0;
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/* terminal magic number */
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static int terminal_magic_num = 0;
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/* Hops within a group */
static int num_intra_nonmin_hops = 4;
static int num_intra_min_hops = 2;

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static FILE * dragonfly_log = NULL;
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static int sample_bytes_written = 0;
static int sample_rtr_bytes_written = 0;
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static char cn_sample_file[MAX_NAME_LENGTH];
static char router_sample_file[MAX_NAME_LENGTH];
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//don't do overhead here - job of MPI layer
static tw_stime mpi_soft_overhead = 0;
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typedef struct terminal_custom_message_list terminal_custom_message_list;
struct terminal_custom_message_list {
    terminal_custom_message msg;
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    char* event_data;
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    terminal_custom_message_list *next;
    terminal_custom_message_list *prev;
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};

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static void init_terminal_custom_message_list(terminal_custom_message_list *thisO, 
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    terminal_custom_message *inmsg) {
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    thisO->msg = *inmsg;
    thisO->event_data = NULL;
    thisO->next = NULL;
    thisO->prev = NULL;
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}

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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);
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}

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;
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    int intra_grp_radix;
    int num_col_chans;
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    int num_row_chans;
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    int num_router_rows;
    int num_router_cols;
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    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;
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   terminal_custom_message_list **terminal_msgs;
   terminal_custom_message_list **terminal_msgs_tail;
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   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;

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   tw_stime * last_buf_full;
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   tw_stime busy_time;
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   tw_stime max_latency;
   tw_stime min_latency;

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   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;
};

/* terminal event type (1-4) */
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typedef enum event_t
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{
  T_GENERATE=1,
  T_ARRIVE,
  T_SEND,
  T_BUFFER,
  R_SEND,
  R_ARRIVE,
  R_BUFFER,
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} event_t;
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/* whether the last hop of a packet was global, local or a terminal */
enum last_hop
{
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   GLOBAL=1,
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   LOCAL,
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   TERMINAL,
   ROOT
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};

/* 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
{
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    MINIMAL = 1,
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    NON_MINIMAL,
    ADAPTIVE,
    PROG_ADAPTIVE
};

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enum LINK_TYPE
{
    GREEN,
    BLACK,
};
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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;
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   tw_stime** last_buf_full;
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   tw_stime* busy_time;
   tw_stime* busy_time_sample;

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   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;
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   int *in_send_loop;
   int *queued_count;
   struct rc_stack * st;
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   int* last_sent_chan;
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   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;
};

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;
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    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);
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    key = key * 21;
    key = ~key ^ (tmp->sender_id >> 4);
    key = key * tmp->sender_id; 
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    return (int)(key & (table_size - 1));*/
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}

/* 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 */
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int dragonfly_custom_get_msg_sz(void)
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{
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	   return sizeof(terminal_custom_message);
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}

static void free_tmp(void * ptr)
{
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    struct dfly_qhash_entry * dfly = (dfly_qhash_entry *)ptr; 
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    if(dfly->remote_event_data)
        free(dfly->remote_event_data);
   
    if(dfly)
        free(dfly);
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}
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static void append_to_terminal_custom_message_list(  
        terminal_custom_message_list ** thisq,
        terminal_custom_message_list ** thistail,
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        int index, 
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        terminal_custom_message_list *msg) {
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    if(thisq[index] == NULL) {
        thisq[index] = msg;
    } else {
        thistail[index]->next = msg;
        msg->prev = thistail[index];
    } 
    thistail[index] = msg;
}

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static void prepend_to_terminal_custom_message_list(  
        terminal_custom_message_list ** thisq,
        terminal_custom_message_list ** thistail,
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        int index, 
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        terminal_custom_message_list *msg) {
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    if(thisq[index] == NULL) {
        thistail[index] = msg;
    } else {
        thisq[index]->prev = msg;
        msg->next = thisq[index];
    } 
    thisq[index] = msg;
}

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

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static terminal_custom_message_list* return_tail(
        terminal_custom_message_list ** thisq,
        terminal_custom_message_list ** thistail,
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        int index) {
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    terminal_custom_message_list *tail = thistail[index];
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    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){
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    /*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;
    
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    // shorthand
    dragonfly_param *p = params;
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    int myRank;
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    MPI_Comm_rank(MPI_COMM_CODES, &myRank);
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    int rc = configuration_get_value_int(&config, "PARAMS", "local_vc_size", anno, &p->local_vc_size);
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    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);
    }

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    rc = configuration_get_value_double(&config, "PARAMS", "router_delay", anno,
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            &p->router_delay);
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    if(rc) {
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      p->router_delay = 100;
    }
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    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)
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	      routing = PROG_ADAPTIVE;
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    else
    {
        fprintf(stderr, 
                "No routing protocol specified, setting to minimal routing\n");
        routing = -1;
    }

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    rc = configuration_get_value_int(&config, "PARAMS", "num_vcs_override", anno, &p->num_vcs);
    if(rc) {
        if(routing == PROG_ADAPTIVE)
            p->num_vcs = 10;
        else
            p->num_vcs = 8;
    }
    else {
        printf("Overriding num_vcs: p->num_vcs=%d\n"%p->num_vcs);
    }
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    rc = configuration_get_value_int(&config, "PARAMS", "num_groups", anno, &p->num_groups);
    if(rc) {
      printf("Number of groups not specified. Aborting");
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      MPI_Abort(MPI_COMM_CODES, 1);
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    }
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    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;
    }
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    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;
    }
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    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;
    }
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    p->intra_grp_radix = (p->num_router_cols * p->num_row_chans) + (p->num_router_rows * p->num_col_chans);
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    p->num_routers = p->num_router_rows * p->num_router_cols;
    
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    rc = configuration_get_value_int(&config, "PARAMS", "num_cns_per_router", anno, &p->num_cn);
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    if(rc) {
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        printf("\n Number of cns per router not specified, setting to %d ", p->num_routers/2);
        p->num_cn = p->num_routers/2;
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    }
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    rc = configuration_get_value_int(&config, "PARAMS", "num_global_channels", anno, &p->num_global_channels);
    if(rc) {
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        printf("\n Number of global channels per router not specified, setting to 10 ");
        p->num_global_channels = 10;
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    }
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    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;
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    p->total_routers = p->num_groups * p->num_routers;
    p->total_terminals = p->total_routers * p->num_cn;
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    // read intra group connections, store from a router's perspective
    // all links to the same router form a vector
    char intraFile[MAX_NAME_LENGTH];
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    configuration_get_value(&config, "PARAMS", "intra-group-connections", 
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        anno, intraFile, MAX_NAME_LENGTH);
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    if(strlen(intraFile) <= 0) {
      tw_error(TW_LOC, "Intra group connections file not specified. Aborting");
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    }
    FILE *groupFile = fopen(intraFile, "rb");
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    if(!groupFile)
        tw_error(TW_LOC, "intra-group file not found ");

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    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];
668
    configuration_get_value(&config, "PARAMS", "inter-group-connections", 
669
        anno, interFile, MAX_NAME_LENGTH);
670 671
    if(strlen(interFile) <= 0) {
      tw_error(TW_LOC, "Inter group connections file not specified. Aborting");
672 673 674
    }
    FILE *systemFile = fopen(interFile, "rb");
    if(!myRank)
675
    {
676
      printf("Reading inter-group connectivity file: %s\n", interFile);
677 678
      printf("\n Total routers %d total groups %d ", p->total_routers, p->num_groups);
    }
679 680 681 682 683 684 685 686 687

    {
      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);
      }
688
      
689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709
      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);

710
#if DUMP_CONNECTIONS == 1
711 712 713 714 715 716 717 718
    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++) {
719
          // offset is number of local connections
720
          // type is black or green according to Cray architecture 
721 722 723 724 725 726 727
          printf("%d,%d ", it->second[l].offset, it->second[l].type);
        }
        printf(")");
      }
      printf("\n");
    }
#endif
728
#if DUMP_CONNECTIONS == 1
729 730 731
    printf("Dumping inter-group connections\n");
    for(int a = 0; a < interGroupLinks.size(); a++) {
      printf("Connections for router %d\n", a);
732 733
      map< int, vector<bLink> >  &curMap = interGroupLinks[a];
      map< int, vector<bLink> >::iterator it = curMap.begin();
734
      for(; it != curMap.end(); it++) {
735
        // dest group ID 
736 737
        printf(" ( %d - ", it->first);
        for(int l = 0; l < it->second.size(); l++) {
738 739
            // dest is dest router ID
            // offset is number of global connections
740 741 742 743 744 745 746 747
          printf("%d,%d ", it->second[l].offset, it->second[l].dest);
        }
        printf(")");
      }
      printf("\n");
    }
#endif

748
#if DUMP_CONNECTIONS == 1
749 750 751 752 753 754 755 756 757 758 759 760 761
    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) {
762
        printf("\n Total nodes %d routers %d groups %d routers per group %d radix %d\n",
763
                p->num_cn * p->total_routers, p->total_routers, p->num_groups,
764
                p->num_routers, p->radix);
765
    }
766

767 768 769
    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);
770
    p->credit_delay = bytes_to_ns(CREDIT_SIZE, p->local_bandwidth); //assume 8 bytes packet
771 772
}

773
void dragonfly_custom_configure(){
774 775 776
    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);
777
    all_params = (dragonfly_param *)malloc(num_params * sizeof(*all_params));
778 779 780 781 782 783 784 785

    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]);
    }
786 787 788
#ifdef ENABLE_CORTEX
	model_net_topology = dragonfly_custom_cortex_topology;
#endif
789 790 791
}

/* report dragonfly statistics like average and maximum packet latency, average number of hops traversed */
792
void dragonfly_custom_report_stats()
793 794 795 796 797 798 799
{
   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;

800 801 802 803 804 805 806
   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);
807
   
808 809
   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);
810 811
   if(routing == ADAPTIVE || routing == PROG_ADAPTIVE)
    {
812 813
	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);
814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832
    }

   /* 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 
833
terminal_custom_init( terminal_state * s, 
834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858
	       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);

859
   s->terminal_id = codes_mapping_get_lp_relative_id(lp->gid, 0, 0);
860
   s->router_id=(int)s->terminal_id / (s->params->num_cn);
861 862
   s->terminal_available_time = 0.0;
   s->packet_counter = 0;
863 864 865
   s->min_latency = INT_MAX;
   s->max_latency = 0;   

866 867 868 869 870 871 872 873 874 875 876 877 878 879
   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));
880
   s->last_buf_full = (tw_stime*)malloc(s->num_vcs * sizeof(tw_stime));
881 882 883

   for( i = 0; i < s->num_vcs; i++ )
    {
884
      s->last_buf_full[i] = 0.0;
885 886 887 888
      s->vc_occupancy[i]=0;
    }


889
   s->rank_tbl = NULL;
890
   s->terminal_msgs = 
891
       (terminal_custom_message_list**)malloc(s->num_vcs*sizeof(terminal_custom_message_list*));
892
   s->terminal_msgs_tail = 
893
       (terminal_custom_message_list**)malloc(s->num_vcs*sizeof(terminal_custom_message_list*));
894 895 896 897 898 899 900 901 902 903 904
   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 */
905
void router_custom_setup(router_state * r, tw_lp * lp)
906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923
{
    
    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;

924
    num_routers_per_mgrp = codes_mapping_get_lp_count (lp_group_name, 1, "modelnet_dragonfly_custom_router",
925 926 927 928 929 930 931
            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);

932
   r->router_id = codes_mapping_get_lp_relative_id(lp->gid, 0, 0);
933
   r->group_id=r->router_id/p->num_routers;
934 935
    
   //printf("\n Local router id %d global id %d ", r->router_id, lp->gid);
936 937 938 939

   r->fwd_events = 0;
   r->rev_events = 0;

940

941 942 943 944 945 946 947
   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));
948 949
  
   r->last_sent_chan = (int*) malloc(p->num_router_rows * sizeof(int));
950 951 952
   r->vc_occupancy = (int**)malloc(p->radix * sizeof(int*));
   r->in_send_loop = (int*)malloc(p->radix * sizeof(int));
   r->pending_msgs = 
953
    (terminal_custom_message_list***)malloc(p->radix * sizeof(terminal_custom_message_list**));
954
   r->pending_msgs_tail = 
955
    (terminal_custom_message_list***)malloc(p->radix * sizeof(terminal_custom_message_list**));
956
   r->queued_msgs = 
957
    (terminal_custom_message_list***)malloc(p->radix * sizeof(terminal_custom_message_list**));
958
   r->queued_msgs_tail = 
959
    (terminal_custom_message_list***)malloc(p->radix * sizeof(terminal_custom_message_list**));
960
   r->queued_count = (int*)malloc(p->radix * sizeof(int));
961
   r->last_buf_full = (tw_stime**)malloc(p->radix * sizeof(tw_stime*));
962 963 964 965
   r->busy_time = (tw_stime*)malloc(p->radix * sizeof(tw_stime));
   r->busy_time_sample = (tw_stime*)malloc(p->radix * sizeof(tw_stime));

   rc_stack_create(&r->st);
966 967 968 969

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

970 971 972 973 974 975 976 977 978 979 980 981 982 983
   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));
984 985
    r->pending_msgs[i] = (terminal_custom_message_list**)malloc(p->num_vcs * 
        sizeof(terminal_custom_message_list*));
986
    r->last_buf_full[i] = (tw_stime*)malloc(p->num_vcs * sizeof(tw_stime));
987 988 989 990 991 992
    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*));
993
        for(int j = 0; j < p->num_vcs; j++) {
994
            r->last_buf_full[i][j] = 0.0;
995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006
            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 */
1007
static tw_stime dragonfly_custom_packet_event(
1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021
        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;
1022
    terminal_custom_message * msg;
1023 1024 1025 1026 1027 1028
    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,
1029
            sender, DRAGONFLY_CUSTOM, (void**)&msg, (void**)&tmp_ptr);
1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048
    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*/
      {
1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060
        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;
        }
1061 1062 1063 1064 1065 1066 1067
     }
	   //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 */
1068
static void dragonfly_custom_packet_event_rc(tw_lp *sender)
1069 1070 1071 1072 1073 1074
{
	  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*/
1075
static void router_credit_send(router_state * s, terminal_custom_message * msg, 
1076 1077 1078
  tw_lp * lp, int sq) {
  tw_event * buf_e;
  tw_stime ts;
1079
  terminal_custom_message * buf_msg;
1080 1081 1082 1083 1084 1085 1086 1087 1088 1089 1090

  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;
1091 1092 1093 1094
  } else if(msg->last_hop == GLOBAL 
          || msg->last_hop == LOCAL
          || msg->last_hop == ROOT)
  {
1095 1096 1097 1098 1099 1100 1101
    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) {
1102
    buf_e = model_net_method_event_new(dest, ts, lp, DRAGONFLY_CUSTOM, 
1103 1104 1105
      (void**)&buf_msg, NULL);
    buf_msg->magic = terminal_magic_num;
  } else {
1106
    buf_e = model_net_method_event_new(dest, ts, lp, DRAGONFLY_CUSTOM_ROUTER,
1107 1108 1109 1110 1111 1112 1113 1114 1115 1116 1117 1118 1119 1120 1121 1122 1123 1124
            (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;
}

1125
static void packet_generate_rc(terminal_state * s, tw_bf * bf, terminal_custom_message * msg, tw_lp * lp)
1126 1127 1128 1129 1130 1131 1132
{
   s->packet_gen--;
   packet_gen--;
   
   tw_rand_reverse_unif(lp->rng);

   int num_chunks = msg->packet_size/s->params->chunk_size;
1133
   if(msg->packet_size < s->params->chunk_size)
1134 1135 1136 1137
       num_chunks++;

   int i;
   for(i = 0; i < num_chunks; i++) {
1138
        delete_terminal_custom_message_list(return_tail(s->terminal_msgs, 
1139 1140 1141 1142 1143 1144 1145 1146 1147
          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;
1148 1149 1150 1151
        if(bf->c8)
        {
            s->last_buf_full[0] = msg->saved_busy_time;
        }
1152 1153 1154 1155 1156 1157 1158 1159 1160
      }
     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 */
1161
static void packet_generate(terminal_state * s, tw_bf * bf, terminal_custom_message * msg, 
1162 1163 1164 1165 1166 1167 1168 1169 1170 1171 1172
  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;
1173 1174
  double cn_delay = s->params->cn_delay;

1175
  if (msg->packet_size < s->params->chunk_size) 
1176 1177
      num_chunks++;

1178 1179 1180 1181
  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);
1182
  
1183
  msg->packet_ID = s->packet_counter;
1184 1185 1186 1187 1188 1189 1190 1191 1192 1193
  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));

1194
  for(int i = 0; i < num_chunks; i++)
1195
  {
1196 1197
    terminal_custom_message_list *cur_chunk = (terminal_custom_message_list*)malloc(
      sizeof(terminal_custom_message_list));
1198
    msg->origin_router_id = s->router_id;
1199
    init_terminal_custom_message_list(cur_chunk, msg);
1200 1201 1202 1203 1204 1205
  
    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);
    }
    
1206
    void * m_data_src = model_net_method_get_edata(DRAGONFLY_CUSTOM, msg);
1207 1208 1209 1210 1211 1212 1213 1214 1215 1216 1217
    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;
1218
    append_to_terminal_custom_message_list(s->terminal_msgs, s->terminal_msgs_tail,
1219 1220 1221 1222 1223 1224 1225 1226 1227
      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;
1228 1229 1230 1231 1232 1233 1234 1235

      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);
      }
1236 1237 1238 1239 1240
  }
  
  if(s->in_send_loop == 0) {
    bf->c5 = 1;
    ts = codes_local_latency(lp);
1241
    terminal_custom_message *m;
1242
    tw_event* e = model_net_method_event_new(lp->gid, ts, lp, DRAGONFLY_CUSTOM, 
1243 1244 1245 1246 1247 1248 1249
      (void**)&m, NULL);
    m->type = T_SEND;
    m->magic = terminal_magic_num;
    s->in_send_loop = 1;
    tw_event_send(e);
  }

1250
  total_event_size = model_net_get_msg_sz(DRAGONFLY_CUSTOM) + 
1251 1252 1253 1254 1255 1256 1257 1258 1259 1260 1261 1262
      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;
}

1263
static void packet_send_rc(terminal_state * s, tw_bf * bf, terminal_custom_message * msg,
1264 1265
        tw_lp * lp)
{
1266 1267 1268
      if(bf->c10)
         s->last_buf_full[0] = msg->saved_busy_time;
      
1269 1270 1271 1272 1273 1274 1275 1276 1277 1278 1279 1280 1281 1282 1283
      if(bf->c1) {
        s->in_send_loop = 1;
        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;

1284
      terminal_custom_message_list* cur_entry = (terminal_custom_message_list *)rc_stack_pop(s->st);
1285

1286
      prepend_to_terminal_custom_message_list(s->terminal_msgs, 
1287 1288 1289 1290 1291 1292 1293
              s->terminal_msgs_tail, 0, cur_entry);
      if(bf->c3) {
        tw_rand_reverse_unif(lp->rng);
      }
      if(bf->c4) {
        s->in_send_loop = 1;
      }
1294
      if(bf->c5)
1295
      {
1296
          tw_rand_reverse_unif(lp->rng);
1297
          s->issueIdle = 1;
1298 1299 1300
          if(bf->c6)
          {
            s->busy_time = msg->saved_total_time;
1301
            s->last_buf_full[0] = msg->saved_busy_time;
1302 1303
            s->busy_time_sample = msg->saved_sample_time;
          }
1304
      }
1305 1306 1307
      return;
}
/* sends the packet from the current dragonfly compute node to the attached router */
1308
static void packet_send(terminal_state * s, tw_bf * bf, terminal_custom_message * msg, 
1309 1310 1311 1312
  tw_lp * lp) {
  
  tw_stime ts;
  tw_event *e;
1313
  terminal_custom_message *m;
1314 1315
  tw_lpid router_id;

1316
  terminal_custom_message_list* cur_entry = s->terminal_msgs[0];
1317

1318 1319 1320 1321 1322 1323 1324 1325 1326 1327
  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);
      }
  }

1328 1329 1330 1331 1332 1333 1334 1335
  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;
1336
  if(cur_entry->msg.packet_size < s->params->chunk_size)
1337 1338 1339
    num_chunks++;

  tw_stime delay = s->params->cn_delay;
1340
  if((cur_entry->msg.packet_size < s->params->chunk_size) && (cur_entry->msg.chunk_id == num_chunks - 1))
1341 1342 1343 1344 1345 1346 1347
       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;

1348
  ts = s->terminal_available_time - tw_now(lp);
1349 1350 1351 1352
  //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,
1353 1354
      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);
1355 1356
  // we are sending an event to the router, so no method_event here
  void * remote_event;
1357
  e = model_net_method_event_new(router_id, ts, lp,
1358
          DRAGONFLY_CUSTOM_ROUTER, (void**)&m, &remote_event);
1359
  memcpy(m, &cur_entry->msg, sizeof(terminal_custom_message));
1360 1361 1362 1363 1364 1365 1366 1367 1368 1369 1370
  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;
1371
  m->intm_rtr_id = -1;
1372 1373 1374 1375 1376 1377
  tw_event_send(e);


  if(cur_entry->msg.chunk_id == num_chunks - 1 && 
      (cur_entry->msg.local_event_size_bytes > 0)) {
    bf->c2 = 1;
1378 1379
    tw_stime local_ts = codes_local_latency(lp); 
    tw_event *e_new = tw_event_new(cur_entry->msg.sender_lp, local_ts, lp);
1380 1381 1382 1383 1384 1385 1386 1387 1388
    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); 
1389
  rc_stack_push(lp, cur_entry, delete_terminal_custom_message_list, s->st);
1390 1391 1392 1393 1394 1395 1396 1397
  s->terminal_length -= s->params->chunk_size;

  cur_entry = s->terminal_msgs[0];

  /* if there is another packet inline then schedule another send event */
  if(cur_entry != NULL &&
    s->vc_occupancy[0] + s->params->chunk_size <= s->params->cn_vc_size) {
    bf->c3 = 1;
1398
    terminal_custom_message *m_new;
1399
    ts += tw_rand_unif(lp->rng);
1400
    e = model_net_method_event_new(lp->gid, ts, lp, DRAGONFLY_CUSTOM, 
1401 1402 1403 1404 1405 1406 1407 1408 1409
      (void**)&m_new, NULL);
    m_new->type = T_SEND;
    m_new->magic = terminal_magic_num;
    tw_event_send(e);
  } else {
      /* If not then the LP will wait for another credit or packet generation */
    bf->c4 = 1;
    s->in_send_loop = 0;
  }
1410
  if(s->issueIdle) {
1411 1412
    bf->c5 = 1;
    s->issueIdle = 0;
1413 1414 1415
    ts += tw_rand_unif(lp->rng);
    model_net_method_idle_event(ts, 0, lp);
   
1416
    if(s->last_buf_full[0] > 0.0)
1417 1418 1419
    {
        bf->c6 = 1;
        msg->saved_total_time = s->busy_time;
1420
        msg->saved_busy_time = s->last_buf_full[0];
1421 1422
        msg->saved_sample_time = s->busy_time_sample;

1423 1424 1425
        s->busy_time += (tw_now(lp) - s->last_buf_full[0]);
        s->busy_time_sample += (tw_now(lp) - s->last_buf_full[0]);
        s->last_buf_full[0] = 0.0;
1426
    }
1427
  }
1428 1429 1430
  return;
}

1431
static void packet_arrive_rc(terminal_state * s, tw_bf * bf, terminal_custom_message * msg, tw_lp * lp)
1432 1433 1434 1435 1436 1437 1438 1439 1440 1441 1442 1443 1444 1445 1446 1447 1448 1449 1450 1451 1452 1453 1454 1455 1456 1457 1458 1459 1460 1461 1462 1463 1464 1465 1466 1467 1468 1469 1470 1471 1472 1473 1474 1475 1476
{
    if(bf->c31)
    {
      s->packet_fin--;
      packet_fin--;
    }
      tw_rand_reverse_unif(lp->rng);
      if(msg->path_type == MINIMAL)
        minimal_count--;
      if(msg->path_type == NON_MINIMAL)
        nonmin_count--;

      N_finished_chunks--;
      s->finished_chunks--;
      s->fin_chunks_sample--;

      total_hops -= msg->my_N_hop;
       s->total_hops -= msg->my_N_hop;
       s->fin_hops_sample -= msg->my_N_hop;
       dragonfly_total_time  = msg->saved_total_time;
       s->fin_chunks_time = msg->saved_sample_time;
       s->total_time = msg->saved_avg_time;
      
      struct qhash_head * hash_link = NULL;
      struct dfly_qhash_entry * tmp = NULL; 
      
      struct dfly_hash_key key;
      key.message_id = msg->message_id;
      key.sender_id = msg->sender_lp;
      
      hash_link = qhash_search(s->rank_tbl, &key);
      tmp = qhash_entry(hash_link, struct dfly_qhash_entry, hash_link);
      
      mn_stats* stat;
      stat = model_net_find_stats(msg->category, s->dragonfly_stats_array);
      stat->recv_time = msg->saved_rcv_time;

      if(bf->c1)
      {
        stat->recv_count--;
        stat->recv_bytes -= msg->packet_size;
        N_finished_packets--;
        s->finished_packets--;
      }
       if(bf->c3)
1477
       {
1478
          dragonfly_max_latency = msg->saved_available_time;
1479
       }
1480 1481 1482 1483 1484
      
       if(bf->c22)
	{
          s->max_latency = msg->saved_available_time;
	} 
1485 1486 1487
       if(bf->c7)
        {
            //assert(!hash_link);
1488 1489
            if(bf->c8) 
              tw_rand_reverse_unif(lp->rng);
1490 1491 1492 1493
            N_finished_msgs--;
            s->finished_msgs--;
            total_msg_sz -= msg->total_size;
            s->total_msg_size -= msg->total_size;
1494
            s->data_size_sample -= msg->total_size;
1495

1496
	        struct dfly_qhash_entry * d_entry_pop = (dfly_qhash_entry *)rc_stack_pop(s->st);
1497 1498
            qhash_add(s->rank_tbl, &key, &(d_entry_pop->hash_link));
            s->rank_tbl_pop++; 
1499 1500 1501
            
            if(s->rank_tbl_pop >= DFLY_HASH_TABLE_SIZE)
                tw_error(TW_LOC, "\n Exceeded allocated qhash size, increase hash size in dragonfly model");
1502 1503 1504 1505 1506 1507 1508 1509 1510 1511 1512

            hash_link = &(d_entry_pop->hash_link);
            tmp = d_entry_pop; 

            if(bf->c4)
                model_net_event_rc2(lp, &msg->event_rc);
        }
      
       assert(tmp);
       tmp->num_chunks--;

1513 1514 1515 1516 1517 1518
       if(bf->c5)
	   {
	        qhash_del(hash_link);
	        free_tmp(tmp);	
            s->rank_tbl_pop--;
	    }
1519 1520
       return;
}
1521
static void send_remote_event(terminal_state * s, terminal_custom_message * msg, tw_lp * lp, tw_bf * bf, char * event_data, int remote_event_size)
1522
{
1523
        void * tmp_ptr = model_net_method_get_edata(DRAGONFLY_CUSTOM, msg);
1524
        //tw_stime ts = g_tw_lookahead + bytes_to_ns(msg->remote_event_size_bytes, (1/s->params->cn_bandwidth));
1525
        tw_stime ts = g_tw_lookahead + mpi_soft_overhead + tw_rand_unif(lp->rng);
1526 1527 1528 1529 1530 1531 1532 1533 1534 1535 1536 1537 1538 1539 1540 1541 1542 1543 1544 1545 1546 1547 1548
        if (msg->is_pull){
            bf->c4 = 1;
            struct codes_mctx mc_dst =
                codes_mctx_set_global_direct(msg->sender_mn_lp);
            struct codes_mctx mc_src =
                codes_mctx_set_global_direct(lp->gid);
            int net_id = model_net_get_id(LP_METHOD_NM_TERM);

            model_net_set_msg_param(MN_MSG_PARAM_START_TIME, MN_MSG_PARAM_START_TIME_VAL, &(msg->msg_start_time));
            
            msg->event_rc = model_net_event_mctx(net_id, &mc_src, &mc_dst, msg->category,
                    msg->sender_lp, msg->pull_size, ts,
                    remote_event_size, tmp_ptr, 0, NULL, lp);
        }
        else{
            tw_event * e = tw_event_new(msg->final_dest_gid, ts, lp);
            void * m_remote = tw_event_data(e);
            memcpy(m_remote, event_data, remote_event_size);
            tw_event_send(e); 
        }
    return;
}
/* packet arrives at the destination terminal */
1549
static void packet_arrive(terminal_state * s, tw_bf * bf, terminal_custom_message * msg, 
1550 1551 1552 1553 1554
  tw_lp * lp) {

    // NIC aggregation - should this be a separate function?
    // Trigger an event on receiving server

1555 1556 1557
    if(!s->rank_tbl)
        s->rank_tbl = qhash_init(dragonfly_rank_hash_compare, dragonfly_hash_func, DFLY_HASH_TABLE_SIZE);
    
1558 1559 1560 1561 1562 1563 1564 1565 1566 1567 1568 1569 1570 1571 1572 1573 1574 1575 1576 1577 1578 1579 1580 1581 1582 1583 1584 1585 1586 1587 1588
    struct dfly_hash_key key;
    key.message_id = msg->message_id; 
    key.sender_id = msg->sender_lp;
    
    struct qhash_head *hash_link = NULL;
    struct dfly_qhash_entry * tmp = NULL;
      
    hash_link = qhash_search(s->rank_tbl, &key);
    
    if(hash_link)
        tmp = qhash_entry(hash_link, struct dfly_qhash_entry, hash_link);

    uint64_t total_chunks = msg->total_size / s->params->chunk_size;

    if(msg->total_size % s->params->chunk_size)
          total_chunks++;

    if(!total_chunks)
          total_chunks = 1;

    /*if(tmp)
    {
        if(tmp->num_chunks >= total_chunks || tmp->num_chunks < 0)
        {
           //tw_output(lp, "\n invalid number of chunks %d for LP %ld ", tmp->num_chunks, lp->gid);
           tw_lp_suspend(lp, 0, 0);
           return;
        }
    }*/
    assert(lp->gid == msg->dest_terminal_id);

1589
    if(msg->packet_ID == LLU(TRACK_PKT))
1590
        printf("\n Packet %d arrived at lp %llu hops %d ", msg->sender_lp, LLU(lp->gid), msg->my_N_hop);
1591 1592 1593 1594 1595
  
  tw_stime ts = g_tw_lookahead + s->params->credit_delay + tw_rand_unif(lp->rng);

  // no method_event here - message going to router
  tw_event * buf_e;
1596
  terminal_custom_message * buf_msg;
1597
  buf_e = model_net_method_event_new(msg->intm_lp_id, ts, lp,
1598
          DRAGONFLY_CUSTOM_ROUTER, (void**)&buf_msg, NULL);
1599 1600 1601 1602 1603 1604 1605 1606 1607 1608 1609 1610 1611 1612 1613 1614 1615 1616 1617 1618 1619 1620
  buf_msg->magic = router_magic_num;
  buf_msg->vc_index = msg->vc_index;
  buf_msg->output_chan = msg->output_chan;
  buf_msg->type = R_BUFFER;
  tw_event_send(buf_e);

  bf->c1 = 0;
  bf->c3 = 0;
  bf->c4 = 0;
  bf->c7 = 0;

  /* Total overall finished chunks in simulation */
  N_finished_chunks++;
  /* Finished chunks on a LP basis */
  s->finished_chunks++;
  /* Finished chunks per sample */
  s->fin_chunks_sample++;

  /* WE do not allow self messages through dragonfly */
  assert(lp->gid != msg->src_terminal_id);

  uint64_t num_chunks = msg->packet_size / s->params->chunk_size;
1621
  if (msg->packet_size < s->params->chunk_size)
1622 1623 1624 1625 1626 1627 1628 1629 1630 1631 1632 1633 1634 1635 1636 1637 1638 1639 1640 1641 1642