model-net-mpi-replay.c 85.6 KB
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/*
 * Copyright (C) 2014 University of Chicago.
 * See COPYRIGHT notice in top-level directory.
 *
 */
#include <ross.h>
#include <inttypes.h>
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#include <sys/stat.h>
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#include "codes/codes-workload.h"
#include "codes/codes.h"
#include "codes/configuration.h"
#include "codes/codes_mapping.h"
#include "codes/model-net.h"
#include "codes/rc-stack.h"
#include "codes/quicklist.h"
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#include "codes/quickhash.h"
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#include "codes/codes-jobmap.h"
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/* turning on track lp will generate a lot of output messages */
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#define MN_LP_NM "modelnet_dragonfly_custom"
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#define CONTROL_MSG_SZ 64
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#define TRACE -1
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#define MAX_WAIT_REQS 512
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#define CS_LP_DBG 1
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#define RANK_HASH_TABLE_SZ 2000
#define NW_LP_NM "nw-lp"
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#define lprintf(_fmt, ...) \
        do {if (CS_LP_DBG) printf(_fmt, __VA_ARGS__);} while (0)
#define MAX_STATS 65536
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static int msg_size_hash_compare(
            void *key, struct qhash_head *link);

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/* NOTE: Message tracking works in sequential mode only! */
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static int debug_cols = 0;
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/* Turning on this option slows down optimistic mode substantially. Only turn
 * on if you get issues with wait-all completion with traces. */
static int preserve_wait_ordering = 0;
static int enable_msg_tracking = 0;
static int is_synthetic = 0;
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tw_lpid TRACK_LP = -1;
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int nprocs = 0;
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static double total_syn_data = 0;
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static int unmatched = 0;
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char workload_type[128];
char workload_file[8192];
char offset_file[8192];
static int wrkld_id;
static int num_net_traces = 0;
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static int num_dumpi_traces = 0;
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static int64_t EAGER_THRESHOLD = 8192;
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static int alloc_spec = 0;
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static tw_stime self_overhead = 10.0;
static tw_stime mean_interval = 100000;
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static int payload_sz = 1024;
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/* Doing LP IO*/
static char lp_io_dir[256] = {'\0'};
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static char sampling_dir[32] = {'\0'};
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static lp_io_handle io_handle;
static unsigned int lp_io_use_suffix = 0;
static int do_lp_io = 0;

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/* variables for loading multiple applications */
char workloads_conf_file[8192];
char alloc_file[8192];
int num_traces_of_job[5];
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tw_stime soft_delay_mpi = 2500;
tw_stime nic_delay = 1000;
tw_stime copy_per_byte_eager = 0.55;
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char file_name_of_job[5][8192];

struct codes_jobmap_ctx *jobmap_ctx;
struct codes_jobmap_params_list jobmap_p;

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/* Variables for Cortex Support */
/* Matthieu's additions start */
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#ifdef ENABLE_CORTEX_PYTHON
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static char cortex_file[512] = "\0";
static char cortex_class[512] = "\0";
static char cortex_gen[512] = "\0";
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#endif
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/* Matthieu's additions end */

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typedef struct nw_state nw_state;
typedef struct nw_message nw_message;
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typedef unsigned int dumpi_req_id;
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static int net_id = 0;
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static float noise = 2.0;
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static int num_nw_lps = 0, num_mpi_lps = 0;

static int num_syn_clients;
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FILE * workload_log = NULL;
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FILE * msg_size_log = NULL;
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FILE * workload_agg_log = NULL;
FILE * workload_meta_log = NULL;

static uint64_t sample_bytes_written = 0;
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long long num_bytes_sent=0;
long long num_bytes_recvd=0;

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long long num_syn_bytes_sent = 0;
long long num_syn_bytes_recvd = 0;

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double max_time = 0,  max_comm_time = 0, max_wait_time = 0, max_send_time = 0, max_recv_time = 0;
double avg_time = 0, avg_comm_time = 0, avg_wait_time = 0, avg_send_time = 0, avg_recv_time = 0;


/* runtime option for disabling computation time simulation */
static int disable_delay = 0;
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static int enable_sampling = 0;
static double sampling_interval = 5000000;
static double sampling_end_time = 3000000000;
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static int enable_debug = 0;
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/* set group context */
struct codes_mctx group_ratio;

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/* MPI_OP_GET_NEXT is for getting next MPI operation when the previous operation completes.
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* MPI_SEND_ARRIVED is issued when a MPI message arrives at its destination (the message is transported by model-net and an event is invoked when it arrives.
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* MPI_SEND_POSTED is issued when a MPI message has left the source LP (message is transported via model-net). */
enum MPI_NW_EVENTS
{
	MPI_OP_GET_NEXT=1,
	MPI_SEND_ARRIVED,
    MPI_SEND_ARRIVED_CB, // for tracking message times on sender
	MPI_SEND_POSTED,
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    MPI_REND_ARRIVED,
    MPI_REND_ACK_ARRIVED,
    CLI_BCKGND_FIN,
    CLI_BCKGND_ARRIVE,
    CLI_BCKGND_GEN,
    CLI_NBR_FINISH,
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};

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/* type of synthetic traffic */
enum TRAFFIC
{
    UNIFORM = 1, /* sends message to a randomly selected node */
    NEAREST_NEIGHBOR = 2, /* sends message to the next node (potentially connected to the same router) */
    ALLTOALL = 3, /* sends message to all other nodes */
    STENCIL = 4  /* sends message to 4 nearby neighbors */
};
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struct mpi_workload_sample
{
    /* Sampling data */
    int nw_id;
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    int app_id;
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    unsigned long num_sends_sample;
    unsigned long num_bytes_sample;
    unsigned long num_waits_sample;
    double sample_end_time;
};
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/* stores pointers of pending MPI operations to be matched with their respective sends/receives. */
struct mpi_msgs_queue
{
    int op_type;
    int tag;
    int source_rank;
    int dest_rank;
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    int64_t num_bytes;
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    int64_t seq_id;
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    tw_stime req_init_time;
	dumpi_req_id req_id;
    struct qlist_head ql;
};

/* stores request IDs of completed MPI operations (Isends or Irecvs) */
struct completed_requests
{
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	unsigned int req_id;
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    struct qlist_head ql;
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    int index;
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};

/* for wait operations, store the pending operation and number of completed waits so far. */
struct pending_waits
{
    int op_type;
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    unsigned int req_ids[MAX_WAIT_REQS];
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	int num_completed;
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	int count;
    tw_stime start_time;
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    struct qlist_head ql;
};

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struct msg_size_info
{
    int64_t msg_size;
    int num_msgs;
    tw_stime agg_latency;
    tw_stime avg_latency;
    struct qhash_head * hash_link;
    struct qlist_head ql; 
};
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typedef struct mpi_msgs_queue mpi_msgs_queue;
typedef struct completed_requests completed_requests;
typedef struct pending_waits pending_waits;

/* state of the network LP. It contains the pointers to send/receive lists */
struct nw_state
{
	long num_events_per_lp;
	tw_lpid nw_id;
	short wrkld_end;
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    int app_id;
    int local_rank;
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    int synthetic_pattern;
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    int is_finished;
    int neighbor_completed;

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    struct rc_stack * processed_ops;
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    struct rc_stack * processed_wait_op;
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    struct rc_stack * matched_reqs;
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//    struct rc_stack * indices;
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    /* count of sends, receives, collectives and delays */
	unsigned long num_sends;
	unsigned long num_recvs;
	unsigned long num_cols;
	unsigned long num_delays;
	unsigned long num_wait;
	unsigned long num_waitall;
	unsigned long num_waitsome;

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	/* time spent by the LP in executing the app trace*/
	double start_time;
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    double col_time;

    double reduce_time;
    int num_reduce;

    double all_reduce_time;
    int num_all_reduce;

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	double elapsed_time;
	/* time spent in compute operations */
	double compute_time;
	/* time spent in message send/isend */
	double send_time;
	/* time spent in message receive */
	double recv_time;
	/* time spent in wait operation */
	double wait_time;
	/* FIFO for isend messages arrived on destination */
	struct qlist_head arrival_queue;
	/* FIFO for irecv messages posted but not yet matched with send operations */
	struct qlist_head pending_recvs_queue;
	/* List of completed send/receive requests */
	struct qlist_head completed_reqs;
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    tw_stime cur_interval_end;
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    /* Pending wait operation */
    struct pending_waits * wait_op;
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    /* Message size latency information */
    struct qhash_table * msg_sz_table;
    struct qlist_head msg_sz_list;

    /* quick hash for maintaining message latencies */

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    unsigned long num_bytes_sent;
    unsigned long num_bytes_recvd;

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    unsigned long syn_data;
    unsigned long gen_data;
    
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    /* For sampling data */
    int sampling_indx;
    int max_arr_size;
    struct mpi_workload_sample * mpi_wkld_samples;
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    char output_buf[512];
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    char col_stats[64];
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};

/* data for handling reverse computation.
* saved_matched_req holds the request ID of matched receives/sends for wait operations.
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* ptr_match_op holds the matched MPI operation which are removed from the queues when a send is matched with the receive in forward event handler.
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* network event being sent. op is the MPI operation issued by the network workloads API. rv_data holds the data for reverse computation (TODO: Fill this data structure only when the simulation runs in optimistic mode). */
struct nw_message
{
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   // forward message handler
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   int msg_type;
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   int op_type;
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   model_net_event_return event_rc;
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   struct
   {
       tw_lpid src_rank;
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       int dest_rank;
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       int64_t num_bytes;
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       int num_matched;
       int data_type;
       double sim_start_time;
       // for callbacks - time message was received
       double msg_send_time;
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       unsigned int req_id;
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       int matched_req;
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       int tag;
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       int app_id;
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       int found_match;
       short wait_completed;
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       short rend_send;
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   } fwd;
   struct
   {
       double saved_send_time;
       double saved_recv_time;
       double saved_wait_time;
       double saved_delay;
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       int64_t saved_num_bytes;
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       int saved_syn_length;
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   } rc;
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};

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static void send_ack_back(nw_state* s, tw_bf * bf, nw_message * m, tw_lp * lp, mpi_msgs_queue * mpi_op, int matched_req);
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static void send_ack_back_rc(nw_state* s, tw_bf * bf, nw_message * m, tw_lp * lp);
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/* executes MPI isend and send operations */
static void codes_exec_mpi_send(
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        nw_state* s, tw_bf * bf, nw_message * m, tw_lp* lp, struct codes_workload_op * mpi_op, int is_rend);
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/* execute MPI irecv operation */
static void codes_exec_mpi_recv(
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        nw_state* s, tw_bf * bf, nw_message * m, tw_lp * lp, struct codes_workload_op * mpi_op);
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/* reverse of mpi recv function. */
static void codes_exec_mpi_recv_rc(
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        nw_state* s, tw_bf * bf, nw_message* m, tw_lp* lp);
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/* execute the computational delay */
static void codes_exec_comp_delay(
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        nw_state* s, nw_message * m, tw_lp* lp, struct codes_workload_op * mpi_op);
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/* gets the next MPI operation from the network-workloads API. */
static void get_next_mpi_operation(
        nw_state* s, tw_bf * bf, nw_message * m, tw_lp * lp);
/* reverse handler of get next mpi operation. */
static void get_next_mpi_operation_rc(
        nw_state* s, tw_bf * bf, nw_message * m, tw_lp * lp);
/* Makes a call to get_next_mpi_operation. */
static void codes_issue_next_event(tw_lp* lp);
/* reverse handler of next operation */
static void codes_issue_next_event_rc(tw_lp* lp);


///////////////////// HELPER FUNCTIONS FOR MPI MESSAGE QUEUE HANDLING ///////////////
/* upon arrival of local completion message, inserts operation in completed send queue */
/* upon arrival of an isend operation, updates the arrival queue of the network */
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static void update_completed_queue(
        nw_state * s, tw_bf * bf, nw_message * m, tw_lp * lp, dumpi_req_id req_id);
/* reverse of the above function */
static void update_completed_queue_rc(
        nw_state*s,
        tw_bf * bf,
        nw_message * m,
        tw_lp * lp);
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static void update_arrival_queue(
        nw_state*s, tw_bf* bf, nw_message* m, tw_lp * lp);
/* reverse of the above function */
static void update_arrival_queue_rc(
        nw_state*s, tw_bf* bf, nw_message* m, tw_lp * lp);
/* callback to a message sender for computing message time */
static void update_message_time(
        nw_state*s, tw_bf* bf, nw_message* m, tw_lp * lp);
/* reverse for computing message time */
static void update_message_time_rc(
        nw_state*s, tw_bf* bf, nw_message* m, tw_lp * lp);

/* conversion from seconds to eanaoseconds */
static tw_stime s_to_ns(tw_stime ns);

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/*static void update_message_size_rc(
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        struct nw_state * ns,
        tw_lp * lp,
        tw_bf * bf,
        struct nw_message * m)
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{*/
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/*TODO: Complete reverse handler */
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/*    (void)ns;
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    (void)lp;
    (void)bf;
    (void)m;
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}*/
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/* update the message size */
static void update_message_size(
        struct nw_state * ns,
        tw_lp * lp,
        tw_bf * bf,
        struct nw_message * m,
        mpi_msgs_queue * qitem,
        int is_eager,
        int is_send)
{
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            (void)bf;
            (void)is_eager;

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            struct qhash_head * hash_link = NULL;
            tw_stime msg_init_time = qitem->req_init_time;
        
            if(!ns->msg_sz_table)
                ns->msg_sz_table = qhash_init(msg_size_hash_compare, quickhash_64bit_hash, RANK_HASH_TABLE_SZ); 
            
            hash_link = qhash_search(ns->msg_sz_table, &(qitem->num_bytes));

            if(is_send)
                msg_init_time = m->fwd.sim_start_time;
            
            /* update hash table */
            if(!hash_link)
            {
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                struct msg_size_info * msg_info = (struct msg_size_info*)malloc(sizeof(struct msg_size_info));
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                msg_info->msg_size = qitem->num_bytes;
                msg_info->num_msgs = 1;
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                msg_info->agg_latency = tw_now(lp) - msg_init_time;
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                msg_info->avg_latency = msg_info->agg_latency;
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                qhash_add(ns->msg_sz_table, &(msg_info->msg_size), msg_info->hash_link);
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                qlist_add(&msg_info->ql, &ns->msg_sz_list);
                //printf("\n Msg size %d aggregate latency %f num messages %d ", m->fwd.num_bytes, msg_info->agg_latency, msg_info->num_msgs);
            }
            else
            {
                struct msg_size_info * tmp = qhash_entry(hash_link, struct msg_size_info, hash_link);
                tmp->num_msgs++;
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                tmp->agg_latency += tw_now(lp) - msg_init_time;  
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                tmp->avg_latency = (tmp->agg_latency / tmp->num_msgs);
//                printf("\n Msg size %d aggregate latency %f num messages %d ", qitem->num_bytes, tmp->agg_latency, tmp->num_msgs);
            }
}
static void notify_background_traffic_rc(
	    struct nw_state * ns,
        tw_lp * lp,
        tw_bf * bf,
        struct nw_message * m)
{
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    (void)ns;
    (void)bf;
    (void)m;
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    int num_jobs = codes_jobmap_get_num_jobs(jobmap_ctx); 
    
    for(int i = 0; i < num_jobs - 1; i++)
        tw_rand_reverse_unif(lp->rng); 
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}

static void notify_background_traffic(
	    struct nw_state * ns,
        tw_lp * lp,
        tw_bf * bf,
        struct nw_message * m)
{
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        (void)bf;
        (void)m;

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        struct codes_jobmap_id jid; 
        jid = codes_jobmap_to_local_id(ns->nw_id, jobmap_ctx);
        
        int num_jobs = codes_jobmap_get_num_jobs(jobmap_ctx); 
        
        for(int other_id = 0; other_id < num_jobs; other_id++)
        {
            if(other_id == jid.job)
                continue;

            struct codes_jobmap_id other_jid;
            other_jid.job = other_id;

            int num_other_ranks = codes_jobmap_get_num_ranks(other_id, jobmap_ctx);

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            lprintf("\n Other ranks %d ", num_other_ranks);
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            tw_stime ts = (1.1 * g_tw_lookahead) + tw_rand_exponential(lp->rng, mean_interval/10000);
            tw_lpid global_dest_id;
     
            for(int k = 0; k < num_other_ranks; k++)    
            {
                other_jid.rank = k;
                int intm_dest_id = codes_jobmap_to_global_id(other_jid, jobmap_ctx); 
                global_dest_id = codes_mapping_get_lpid_from_relative(intm_dest_id, NULL, NW_LP_NM, NULL, 0);

                tw_event * e;
                struct nw_message * m_new;  
                e = tw_event_new(global_dest_id, ts, lp);
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                m_new = (struct nw_message*)tw_event_data(e);
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                m_new->msg_type = CLI_BCKGND_FIN;
                tw_event_send(e);   
            }
        }
        return;
}
static void notify_neighbor_rc(
	    struct nw_state * ns,
        tw_lp * lp,
        tw_bf * bf,
        struct nw_message * m)
{
       if(bf->c0)
       {
            notify_background_traffic_rc(ns, lp, bf, m);
            return;
       }
   
       if(bf->c1)
       {
          tw_rand_reverse_unif(lp->rng); 
       }
} 
static void notify_neighbor(
	    struct nw_state * ns,
        tw_lp * lp,
        tw_bf * bf,
        struct nw_message * m)
{
    if(ns->local_rank == num_dumpi_traces - 1 
            && ns->is_finished == 1
            && ns->neighbor_completed == 1)
    {
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//        printf("\n All workloads completed, notifying background traffic ");
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        bf->c0 = 1;
        notify_background_traffic(ns, lp, bf, m);
        return;
    }
    
    struct codes_jobmap_id nbr_jid;
    nbr_jid.job = ns->app_id;
    tw_lpid global_dest_id;

    if(ns->is_finished == 1 && (ns->neighbor_completed == 1 || ns->local_rank == 0))
    {
        bf->c1 = 1;

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//        printf("\n Local rank %d notifying neighbor %d ", ns->local_rank, ns->local_rank+1);
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        tw_stime ts = (1.1 * g_tw_lookahead) + tw_rand_exponential(lp->rng, mean_interval/10000);
        nbr_jid.rank = ns->local_rank + 1;
        
        /* Send a notification to the neighbor about completion */
        int intm_dest_id = codes_jobmap_to_global_id(nbr_jid, jobmap_ctx); 
        global_dest_id = codes_mapping_get_lpid_from_relative(intm_dest_id, NULL, NW_LP_NM, NULL, 0);
       
        tw_event * e;
        struct nw_message * m_new;  
        e = tw_event_new(global_dest_id, ts, lp);
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        m_new = (struct nw_message*)tw_event_data(e); 
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        m_new->msg_type = CLI_NBR_FINISH;
        tw_event_send(e);   
    }
}
void finish_bckgnd_traffic_rc(
    struct nw_state * ns,
    tw_bf * b,
    struct nw_message * msg,
    tw_lp * lp)
{
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        (void)b;
        (void)msg;
        (void)lp;

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        ns->is_finished = 0;
        return;
}
void finish_bckgnd_traffic(
    struct nw_state * ns,
    tw_bf * b,
    struct nw_message * msg,
    tw_lp * lp)
{
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        (void)b;
        (void)msg;
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        ns->is_finished = 1;
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        lprintf("\n LP %llu completed sending data %lu completed at time %lf ", LLU(lp->gid), ns->gen_data, tw_now(lp));
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        return;
}

void finish_nbr_wkld_rc(
    struct nw_state * ns,
    tw_bf * b,
    struct nw_message * msg,
    tw_lp * lp)
{
    ns->neighbor_completed = 0;
    
    notify_neighbor_rc(ns, lp, b, msg);
}

void finish_nbr_wkld(
    struct nw_state * ns,
    tw_bf * b,
    struct nw_message * msg,
    tw_lp * lp)
{
    ns->neighbor_completed = 1;

    notify_neighbor(ns, lp, b, msg);
}
static void gen_synthetic_tr_rc(nw_state * s, tw_bf * bf, nw_message * m, tw_lp * lp)
{
    if(bf->c0)
        return;

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    int i;
    for (i=0; i < m->rc.saved_syn_length; i++){
        model_net_event_rc2(lp, &m->event_rc);
        s->gen_data -= payload_sz;
        num_syn_bytes_sent -= payload_sz;
    }
        tw_rand_reverse_unif(lp->rng);
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}

/* generate synthetic traffic */
static void gen_synthetic_tr(nw_state * s, tw_bf * bf, nw_message * m, tw_lp * lp)
{
    if(s->is_finished == 1)
    {
        bf->c0 = 1;
        return;
    }

    /* Get job information */
    tw_lpid global_dest_id;
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    int intm_dest_id;
    nw_message remote_m;
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    struct codes_jobmap_id jid;
    jid = codes_jobmap_to_local_id(s->nw_id, jobmap_ctx); 

    int num_clients = codes_jobmap_get_num_ranks(jid.job, jobmap_ctx);

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    /* Find destination */
    int* dest_svr = NULL; 
    int i, length=0;
    switch(s->synthetic_pattern)
637
    {
638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722
        case UNIFORM:
        {
            length = 1;
            dest_svr = (int*) calloc(1, sizeof(int));
            dest_svr[0] = tw_rand_integer(lp->rng, 0, num_clients - 1);
            if(dest_svr[0] == s->local_rank)
                dest_svr[0] = (s->local_rank + 1) % num_clients;
        }
        break;
        case NEAREST_NEIGHBOR:
        {
            length = 1;
            dest_svr = (int*) calloc(1, sizeof(int));
            dest_svr[0] = (s->local_rank + 1) % num_clients;
        }
        break;
        case ALLTOALL:
        {
            dest_svr = (int*) calloc(num_clients-1, sizeof(int));
            int index = 0;
            for (i=0;i<num_clients;i++)
            {
                if(i!=s->local_rank) 
                {
                    dest_svr[index] = i;
                    index++;
                    length++;
                }
            }
        }
        break;
        case STENCIL:  //2D 4-point stencil
        {
            /* I think this code snippet is coming from the LLNL stencil patterns. */
            int digits, x=1, y=1, row, col, temp=num_clients;
            length = 4;
            dest_svr = (int*) calloc(4, sizeof(int));
            for (digits = 0; temp > 0; temp >>= 1)
                digits++;
            digits = digits/2;
            for (i = 0; i < digits; i++)
                x = x * 2;
            y = num_clients / x;
            //printf("\nStencil Syn: x=%d, y=%d", x, y);
            row = s->local_rank / y;
            col = s->local_rank % y;

            dest_svr[0] = row * y + ((col-1+y)%y);   /* left neighbor */
            dest_svr[1] = row * y + ((col+1+y)%y);   /* right neighbor */
            dest_svr[2] = ((row-1+x)%x) * y + col;   /* bottom neighbor */
            dest_svr[3] = ((row+1+x)%x) * y + col;   /* up neighbor */
        }
        break;
        default:
            tw_error(TW_LOC, "Undefined traffic pattern");
    }   
    /* Record length for reverse handler*/
    m->rc.saved_syn_length = length;

    if(length > 0)
    {
        // m->event_array_rc = (model_net_event_return) malloc(length * sizeof(model_net_event_return));
        //printf("\nRANK %d Dests %d", s->local_rank, length);
        for (i = 0; i < length; i++)
        {
            /* Generate synthetic traffic */
            jid.rank = dest_svr[i];
            intm_dest_id = codes_jobmap_to_global_id(jid, jobmap_ctx); 
            global_dest_id = codes_mapping_get_lpid_from_relative(intm_dest_id, NULL, NW_LP_NM, NULL, 0);

            remote_m.fwd.sim_start_time = tw_now(lp);
            remote_m.fwd.dest_rank = dest_svr[i];
            remote_m.msg_type = CLI_BCKGND_ARRIVE;
            remote_m.fwd.num_bytes = payload_sz;
            remote_m.fwd.app_id = s->app_id;
            remote_m.fwd.src_rank = s->local_rank;

            // printf("\nAPP %d SRC %d Dest %d (twid %llu)", jid.job, s->local_rank, dest_svr[i], global_dest_id);
            m->event_rc = model_net_event(net_id, "synthetic-tr", global_dest_id, payload_sz, 0.0, 
                    sizeof(nw_message), (const void*)&remote_m, 
                    0, NULL, lp);
            
            s->gen_data += payload_sz;
            num_syn_bytes_sent += payload_sz; 
        }
723 724
    }
    /* New event after MEAN_INTERVAL */  
725
    tw_stime ts = mean_interval  + tw_rand_exponential(lp->rng, noise); 
726 727 728
    tw_event * e;
    nw_message * m_new;
    e = tw_event_new(lp->gid, ts, lp);
729
    m_new = (struct nw_message*)tw_event_data(e);
730 731
    m_new->msg_type = CLI_BCKGND_GEN;
    tw_event_send(e);
732 733

    free(dest_svr);
734 735 736 737
}

void arrive_syn_tr_rc(nw_state * s, tw_bf * bf, nw_message * m, tw_lp * lp)
{
738 739 740
    (void)bf;
    (void)m;
    (void)lp;
741 742 743 744 745 746 747
//    printf("\n Data arrived %d total data %ld ", m->fwd.num_bytes, s->syn_data);
    int data = m->fwd.num_bytes;
    s->syn_data -= data;
    num_syn_bytes_recvd -= data;
}
void arrive_syn_tr(nw_state * s, tw_bf * bf, nw_message * m, tw_lp * lp)
{
748 749 750
    (void)bf;
    (void)lp;

751 752 753 754 755
//    printf("\n Data arrived %d total data %ld ", m->fwd.num_bytes, s->syn_data);
    int data = m->fwd.num_bytes;
    s->syn_data += data;
    num_syn_bytes_recvd += data;
}
756
/* Debugging functions, may generate unused function warning */
757
/*static void print_waiting_reqs(uint32_t * reqs, int count)
758
{
759
    lprintf("\n Waiting reqs: %d count", count);
760 761
    int i;
    for(i = 0; i < count; i++ )
762
        lprintf(" %d ", reqs[i]);
763
}*/
764 765 766 767 768 769 770 771 772 773 774 775
static void print_msgs_queue(struct qlist_head * head, int is_send)
{
    if(is_send)
        printf("\n Send msgs queue: ");
    else
        printf("\n Recv msgs queue: ");

    struct qlist_head * ent = NULL;
    mpi_msgs_queue * current = NULL;
    qlist_for_each(ent, head)
       {
            current = qlist_entry(ent, mpi_msgs_queue, ql);
776
            printf(" \n Source %d Dest %d bytes %"PRId64" tag %d ", current->source_rank, current->dest_rank, current->num_bytes, current->tag);
777 778
       }
}
779
static void print_completed_queue(tw_lp * lp, struct qlist_head * head)
780
{
781
//    printf("\n Completed queue: ");
782 783
      struct qlist_head * ent = NULL;
      struct completed_requests* current = NULL;
784
      tw_output(lp, "\n");
785 786 787
      qlist_for_each(ent, head)
       {
            current = qlist_entry(ent, completed_requests, ql);
788
            tw_output(lp, " %llu ", current->req_id);
789
       }
790
}
791
static int clear_completed_reqs(nw_state * s,
792
        tw_lp * lp,
793
        unsigned int * reqs, int count)
794
{
795 796 797
    (void)s;
    (void)lp;

798
    int i, matched = 0;
799

800 801 802
    for( i = 0; i < count; i++)
    {
      struct qlist_head * ent = NULL;
803 804 805
      struct completed_requests * current = NULL;
      struct completed_requests * prev = NULL;

806
      int index = 0;
807 808
      qlist_for_each(ent, &s->completed_reqs)
       {
809 810
           if(prev)
           {
811
              rc_stack_push(lp, prev, free, s->matched_reqs);
812 813
              prev = NULL;
           }
814
            
815 816
           current = qlist_entry(ent, completed_requests, ql);
           current->index = index; 
817 818
            if(current->req_id == reqs[i])
            {
819
                ++matched;
820
                qlist_del(&current->ql);
821
                prev = current;
822
            }
823
            ++index;
824
       }
825 826

      if(prev)
827 828 829 830
      {
         rc_stack_push(lp, prev, free, s->matched_reqs);
         prev = NULL;
      }
831
    }
832
    return matched;
833
}
834
static void add_completed_reqs(nw_state * s,
835 836
        tw_lp * lp,
        int count)
837
{
838
    (void)lp;
839
    for(int i = 0; i < count; i++)
840
    {
841 842
       struct completed_requests * req = (struct completed_requests*)rc_stack_pop(s->matched_reqs);
       // turn on only if wait-all unmatched error arises in optimistic mode.
843
       qlist_add(&req->ql, &s->completed_reqs);
844
    }//end for
845
}
846

847 848 849 850 851 852
/* helper function - maps an MPI rank to an LP id */
static tw_lpid rank_to_lpid(int rank)
{
    return codes_mapping_get_lpid_from_relative(rank, NULL, "nw-lp", NULL, 0);
}

853
static int notify_posted_wait(nw_state* s,
854
        tw_bf * bf, nw_message * m, tw_lp * lp,
855
        unsigned int completed_req)
856
{
857 858
    (void)bf;

859 860
    struct pending_waits* wait_elem = s->wait_op;
    int wait_completed = 0;
861

862
    m->fwd.wait_completed = 0;
863

864 865
    if(!wait_elem)
        return 0;
866

867
    int op_type = wait_elem->op_type;
868

869 870 871
    if(op_type == CODES_WK_WAIT &&
            (wait_elem->req_ids[0] == completed_req))
    {
872
            m->fwd.wait_completed = 1;
873 874
            wait_completed = 1;
    }
875 876
    else if(op_type == CODES_WK_WAITALL
            || op_type == CODES_WK_WAITANY
877 878 879 880 881 882
            || op_type == CODES_WK_WAITSOME)
    {
        int i;
        for(i = 0; i < wait_elem->count; i++)
        {
            if(wait_elem->req_ids[i] == completed_req)
883
            {
884
                wait_elem->num_completed++;
885
                if(wait_elem->num_completed > wait_elem->count)
886
                    printf("\n Num completed %d count %d LP %llu ",
887 888
                            wait_elem->num_completed,
                            wait_elem->count,
889
                            LLU(lp->gid));
890 891
//                if(wait_elem->num_completed > wait_elem->count)
//                    tw_lp_suspend(lp, 1, 0);
892

893
                if(wait_elem->num_completed >= wait_elem->count)
894
                {
895
                    if(enable_debug)
896
                        fprintf(workload_log, "\n(%lf) APP ID %d MPI WAITALL COMPLETED AT %llu ", tw_now(lp), s->app_id, LLU(s->nw_id));
897
                    wait_completed = 1;
898
                }
899

900
                m->fwd.wait_completed = 1;
901
            }
902
        }
903
    }
904
    return wait_completed;
905
}
906

907
/* reverse handler of MPI wait operation */
908
static void codes_exec_mpi_wait_rc(nw_state* s, tw_bf * bf, tw_lp* lp, nw_message * m)
909
{
910
   if(bf->c1)
911
    {
912
        completed_requests * qi = (completed_requests*)rc_stack_pop(s->processed_ops);
913 914
        if(m->fwd.found_match == 0)
        {
915
            qlist_add(&qi->ql, &s->completed_reqs);
916
        }
917 918 919 920 921 922 923 924 925 926 927 928 929
        else
        {
           int index = 1;
           struct qlist_head * ent = NULL;
           qlist_for_each(ent, &s->completed_reqs)
           {
                if(index == m->fwd.found_match)
                {
                    qlist_add(&qi->ql, ent);
                    break;
                }
                index++;
           }
930
        }
931
        codes_issue_next_event_rc(lp);
932
        return;
933
    }
934 935 936
         struct pending_waits * wait_op = s->wait_op;
         free(wait_op);
         s->wait_op = NULL;
937
}
938

939
/* execute MPI wait operation */
940
static void codes_exec_mpi_wait(nw_state* s, tw_bf * bf, nw_message * m, tw_lp* lp, struct codes_workload_op * mpi_op)
941
{
942
    /* check in the completed receives queue if the request ID has already been completed.*/
943 944
                
//    printf("\n Wait posted rank id %d ", s->nw_id);
945
    assert(!s->wait_op);
946
    unsigned int req_id = mpi_op->u.wait.req_id;
947

948
    struct completed_requests* current = NULL;
949

950
    struct qlist_head * ent = NULL;
951
    int index = 0;
952 953 954 955 956
    qlist_for_each(ent, &s->completed_reqs)
    {
        current = qlist_entry(ent, completed_requests, ql);
        if(current->req_id == req_id)
        {
957
            bf->c1=1;
958
            qlist_del(&current->ql);
959
            rc_stack_push(lp, current, free, s->processed_ops);
960
            codes_issue_next_event(lp);
961
            m->fwd.found_match = index;
962
            if(s->nw_id == (tw_lpid)TRACK_LP)
963 964 965
            {
                tw_output(lp, "\n wait matched at post %d ", req_id);
                print_completed_queue(lp, &s->completed_reqs);
966
            }
967 968
            return;
        }
969
        ++index;
970
    }
971

972 973 974 975 976
    /*if(s->nw_id == (tw_lpid)TRACK_LP)
    {
        tw_output(lp, "\n wait posted %llu ", req_id);
        print_completed_queue(lp, &s->completed_reqs);
    }*/
977
    /* If not, add the wait operation in the pending 'waits' list. */
978
    struct pending_waits* wait_op = (struct pending_waits*)malloc(sizeof(struct pending_waits));
979 980 981
    wait_op->op_type = mpi_op->op_type;
    wait_op->req_ids[0] = req_id;
    wait_op->count = 1;
982 983
    wait_op->num_completed = 0;
    wait_op->start_time = tw_now(lp);
984
    s->wait_op = wait_op;
985

986
    return;
987 988
}

989
static void codes_exec_mpi_wait_all_rc(
990
        nw_state* s,
991 992
        tw_bf * bf,
        nw_message * m,
993
        tw_lp* lp)
994
{
995 996 997 998 999 1000 1001 1002 1003 1004 1005
  if(bf->c1)
  {
    int sampling_indx = s->sampling_indx;
    s->mpi_wkld_samples[sampling_indx].num_waits_sample--;

    if(bf->c2)
    {
        s->cur_interval_end -= sampling_interval;
        s->sampling_indx--;
    }
  }
1006 1007 1008 1009 1010 1011 1012 1013
  if(s->wait_op)
  {
      struct pending_waits * wait_op = s->wait_op;
      free(wait_op);
      s->wait_op = NULL;
  }
  else
  {
1014
      add_completed_reqs(s, lp, m->fwd.num_matched);
1015 1016 1017
      codes_issue_next_event_rc(lp);
  }
  return;
1018
}
1019

1020
static void codes_exec_mpi_wait_all(
1021
        nw_state* s,
1022 1023
        tw_bf * bf,
        nw_message * m,
1024
        tw_lp* lp,
1025
        struct codes_workload_op * mpi_op)
1026
{
1027
  if(enable_debug)
1028
    fprintf(workload_log, "\n MPI WAITALL POSTED AT %llu ", LLU(s->nw_id));
1029

1030 1031 1032 1033 1034 1035 1036 1037
  if(enable_sampling)
  {
    bf->c1 = 1;
    if(tw_now(lp) >= s->cur_interval_end)
    {
        bf->c2 = 1;
        int indx = s->sampling_indx;
        s->mpi_wkld_samples[indx].nw_id = s->nw_id;
1038
        s->mpi_wkld_samples[indx].app_id = s->app_id;
1039 1040 1041 1042 1043 1044
        s->mpi_wkld_samples[indx].sample_end_time = s->cur_interval_end;
        s->cur_interval_end += sampling_interval;
        s->sampling_indx++;
    }
    if(s->sampling_indx >= MAX_STATS)
    {
1045
        struct mpi_workload_sample * tmp = (struct mpi_workload_sample*)calloc((MAX_STATS + s->max_arr_size), sizeof(struct mpi_workload_sample));
1046 1047 1048 1049 1050 1051 1052 1053
        memcpy(tmp, s->mpi_wkld_samples, s->sampling_indx);
        free(s->mpi_wkld_samples);
        s->mpi_wkld_samples = tmp;
        s->max_arr_size += MAX_STATS;
    }
    int indx = s->sampling_indx;
    s->mpi_wkld_samples[indx].num_waits_sample++;
  }
1054
  int count = mpi_op->u.waits.count;
1055 1056
  /* If the count is not less than max wait reqs then stop */
  assert(count < MAX_WAIT_REQS);
1057

1058
  int i = 0, num_matched = 0;
1059
  m->fwd.num_matched = 0;
1060

1061
  /*if(lp->gid == TRACK_LP)
1062
  {
1063
      printf("\n MPI Wait all posted ");
1064
      print_waiting_reqs(mpi_op->u.waits.req_ids, count);
1065 1066
      print_completed_queue(lp, &s->completed_reqs);
  }*/
1067
      /* check number of completed irecvs in the completion queue */
1068 1069
  for(i = 0; i < count; i++)
  {
1070
      unsigned int req_id = mpi_op->u.waits.req_ids[i];
1071 1072 1073 1074
      struct qlist_head * ent = NULL;
      struct completed_requests* current = NULL;
      qlist_for_each(ent, &s->completed_reqs)
       {
1075
            current = qlist_entry(ent, struct completed_requests, ql);
1076 1077 1078 1079
            if(current->req_id == req_id)
                num_matched++;
       }
  }
1080

1081
  m->fwd.found_match = num_matched;
1082 1083 1084 1085
  if(num_matched == count)
  {
    /* No need to post a MPI Wait all then, issue next event */
      /* Remove all completed requests from the list */
1086 1087 1088
      m->fwd.num_matched = clear_completed_reqs(s, lp, mpi_op->u.waits.req_ids, count);
      struct pending_waits* wait_op = s->wait_op;
      free(wait_op);
1089 1090
      s->wait_op = NULL;
      codes_issue_next_event(lp);
1091 1092
  }
  else
1093 1094
  {
      /* If not, add the wait operation in the pending 'waits' list. */
1095
	  struct pending_waits* wait_op = (struct pending_waits*)malloc(sizeof(struct pending_waits));
1096 1097 1098 1099 1100 1101 1102 1103
	  wait_op->count = count;
      wait_op->op_type = mpi_op->op_type;
      assert(count < MAX_WAIT_REQS);

      for(i = 0; i < count; i++)
          wait_op->req_ids[i] =  mpi_op->u.waits.req_ids[i];

	  wait_op->num_completed = num_matched;
1104
	  wait_op->start_time = tw_now(lp);
1105
      s->wait_op = wait_op;
1106
  }
1107 1108
  return;
}
1109

1110 1111
/* search for a matching mpi operation and remove it from the list.
 * Record the index in the list from where the element got deleted.
1112
 * Index is used for inserting the element once again in the queue for reverse computation. */
1113
static int rm_matching_rcv(nw_state * ns,
1114
        tw_bf * bf,
1115 1116
        nw_message * m,
        tw_lp * lp,
1117
        mpi_msgs_queue * qitem)
1118 1119
{
    int matched = 0;
1120
    int index = 0;
1121
    int is_rend = 0;
1122 1123
    struct qlist_head *ent = NULL;
    mpi_msgs_queue * qi = NULL;
1124

1125 1126
    qlist_for_each(ent, &ns->pending_recvs_queue){
        qi = qlist_entry(ent, mpi_msgs_queue, ql);
1127 1128
        if(//(qi->num_bytes == qitem->num_bytes)
                //&& 
1129
               ((qi->tag == qitem->tag) || qi->tag == -1)
1130
                && ((qi->source_rank == qitem->source_rank) || qi->source_rank == -1))
1131 1132
        {
            matched = 1;
1133
            qi->num_bytes = qitem->num_bytes;
1134 1135
            break;
        }
1136
        ++index;
1137
    }
1138

1139 1140
    if(matched)
    {
1141 1142 1143 1144 1145 1146 1147
        if(enable_msg_tracking && qitem->num_bytes < EAGER_THRESHOLD)
        {
            update_message_size(ns, lp, bf, m, qitem, 1, 1);
        }
        if(qitem->num_bytes >= EAGER_THRESHOLD)
        {
            /* Matching receive found, need to notify the sender to transmit
1148 1149
             * the data * (only works in sequential mode)*/
            bf->c10 = 1;
1150 1151
            is_rend = 1;
            send_ack_back(ns, bf, m, lp, qitem, qi->req_id);
1152
        }
1153 1154
        else
        {
1155
            bf->c12 = 1;
1156 1157 1158 1159
            m->rc.saved_recv_time = ns->recv_time;
            ns->recv_time += (tw_now(lp) - m->fwd.sim_start_time);
        }
        if(qi->op_type == CODES_WK_IRECV && !is_rend)
1160
        {
1161
            bf->c9 = 1;
1162 1163 1164 1165
            /*if(ns->nw_id == (tw_lpid)TRACK_LP)
            {
                printf("\n Completed irecv req id %d ", qi->req_id);
            }*/
1166
            update_completed_queue(ns, bf, m, lp, qi->req_id);
1167
        }
1168 1169 1170
        else if(qi->op_type == CODES_WK_RECV && !is_rend)
        {
            bf->c8 = 1;
1171
            codes_issue_next_event(lp);
1172
        }
1173

1174
        qlist_del(&qi->ql);
1175

1176
        rc_stack_push(lp, qi, free, ns->processed_ops);
1177
        return index;
1178 1179 1180 1181
    }
    return -1;
}

1182
static int rm_matching_send(nw_state * ns,
1183 1184 1185
        tw_bf * bf,
        nw_message * m,
        tw_lp * lp, mpi_msgs_queue * qitem)
1186 1187 1188 1189 1190
{
    int matched = 0;
    struct qlist_head *ent = NULL;
    mpi_msgs_queue * qi = NULL;

1191
    int index = 0;
1192 1193
    qlist_for_each(ent, &ns->arrival_queue){
        qi = qlist_entry(ent, mpi_msgs_queue, ql);
1194 1195 1196
        if(//(qi->num_bytes == qitem->num_bytes) // it is not a requirement in MPI that the send and receive sizes match
                // && 
		(qi->tag == qitem->tag || qitem->tag == -1)
1197 1198
                && ((qi->source_rank == qitem->source_rank) || qitem->source_rank == -1))
        {
1199
            qitem->num_bytes = qi->num_bytes;
1200 1201 1202
            matched = 1;
            break;
        }
1203
        ++index;
1204 1205 1206 1207
    }

    if(matched)
    {
1208 1209 1210
        if(enable_msg_tracking && (qi->num_bytes < EAGER_THRESHOLD))
            update_message_size(ns, lp, bf, m, qi, 1, 0);
        
1211 1212
        m->fwd.matched_req = qitem->req_id;
        int is_rend = 0;
1213 1214 1215 1216
        if(qitem->num_bytes >= EAGER_THRESHOLD)
        {
            /* Matching receive found, need to notify the sender to transmit
             * the data */
1217
            bf->c10 = 1;
1218 1219
            is_rend = 1;
            send_ack_back(ns, bf, m, lp, qi, qitem->req_id);
1220
        }
1221

1222
        m->rc.saved_recv_time = ns->recv_time;
1223 1224
        ns->recv_time += (tw_now(lp) - qitem->req_init_time);

1225 1226 1227 1228 1229 1230
        /*if(ns->nw_id == (tw_lpid)TRACK_LP && qitem->op_type == CODES_WK_IRECV)
        {
            tw_output(lp, "\n Completed recv req id %d ", qitem->req_id);
            print_completed_queue(lp, &ns->completed_reqs);
        }*/
        
1231 1232 1233
        if(qitem->op_type == CODES_WK_IRECV && !is_rend)
        {
            bf->c9 = 1;
1234
            update_completed_queue(ns, bf, m, lp, qitem->req_id);
1235
        }
1236 1237 1238 1239 1240 1241
        else
         if(qitem->op_type == CODES_WK_RECV && !is_rend)
         {
            bf->c6 = 1;
            codes_issue_next_event(lp);
         }
1242

1243

1244
        qlist_del(&qi->ql);
1245

1246
	    rc_stack_push(lp, qi, free, ns->processed_ops);
1247
        return index;
1248 1249 1250 1251 1252
    }
    return -1;
}
static void codes_issue_next_event_rc(tw_lp * lp)
{
1253
	    tw_rand_reverse_unif(lp->rng);
1254 1255 1256 1257 1258 1259 1260 1261 1262 1263 1264
}

/* Trigger getting next event at LP */
static void codes_issue_next_event(tw_lp* lp)
{
   tw_event *e;
   nw_message* msg;

   tw_stime ts;

   ts = g_tw_lookahead + 0.1 + tw_rand_exponential(lp->rng, noise);
1265
   assert(ts > 0);
1266
   e = tw_event_new( lp->gid, ts, lp );
1267
   msg = (nw_message*)tw_event_data(e);
1268 1269 1270 1271 1272 1273 1274

   msg->msg_type = MPI_OP_GET_NEXT;
   tw_event_send(e);
}

/* Simulate delays between MPI operations */
static void codes_exec_comp_delay(
1275
        nw_state* s, nw_message * m, tw_lp* lp, struct codes_workload_op * mpi_op)
1276 1277 1278 1279 1280
{
	tw_event* e;
	tw_stime ts;
	nw_message* msg;

1281
    m->rc.saved_delay = s->compute_time;
1282 1283
    s->compute_time += s_to_ns(mpi_op->u.delay.seconds);
    ts = s_to_ns(mpi_op->u.delay.seconds);
1284 1285

	ts += g_tw_lookahead + 0.1 + tw_rand_exponential(lp->rng, noise);
1286
    assert(ts > 0);
1287

1288
	e = tw_event_new( lp->gid, ts , lp );
1289
	msg = (nw_message*)tw_event_data(e);
1290
	msg->msg_type = MPI_OP_GET_NEXT;
1291 1292
	tw_event_send(e);

1293 1294 1295
}

/* reverse computation operation for MPI irecv */
1296
static void codes_exec_mpi_recv_rc(
1297 1298 1299
        nw_state* ns,
        tw_bf * bf,
        nw_message* m,
1300
        tw_lp* lp)
1301
{
1302
	ns->recv_time = m->rc.saved_recv_time;
1303

1304 1305
    if(bf->c11)
        codes_issue_next_event_rc(lp);