darshan-mpi-io.c 70.4 KB
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/*
 *  (C) 2009 by Argonne National Laboratory.
 *      See COPYRIGHT in top-level directory.
 */

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#define _XOPEN_SOURCE 500
#define _GNU_SOURCE /* for tdestroy() */

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#include "darshan-config.h"

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#include <stdio.h>
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#ifdef HAVE_MNTENT_H
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#include <mntent.h>
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#endif
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#include <stdlib.h>
#include <string.h>
#include <time.h>
#include <limits.h>
#include <unistd.h>
#include <pthread.h>
#include <sys/types.h>
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#include <sys/stat.h>
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#include <zlib.h>
#include <assert.h>
#include <search.h>

#include "mpi.h"
#include "darshan.h"

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#ifdef DARSHAN_PRELOAD
#include <dlfcn.h>
#include <stdlib.h>

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#if MPI_VERSION < 2
#error Darshan does not yet support MPI 1.x
#endif

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#define DARSHAN_MPI_CALL(func) __real_ ## func

#define DARSHAN_FORWARD_DECL(name,ret,args) \
  ret (*__real_ ## name)args = NULL;

#define MAP_OR_FAIL(func) \
    __real_ ## func = dlsym(RTLD_NEXT, #func); \
    if (!(__real_ ## func)) { \
        fprintf(stderr, "Darshan failed to map symbol: %s\n", #func); \
    }

DARSHAN_FORWARD_DECL(PMPI_File_close, int, (MPI_File *fh));
DARSHAN_FORWARD_DECL(PMPI_File_set_size, int, (MPI_File fh, MPI_Offset size));
DARSHAN_FORWARD_DECL(PMPI_File_iread_at, int, (MPI_File fh, MPI_Offset offset, void *buf, int count, MPI_Datatype datatype, MPI_Request *request));
DARSHAN_FORWARD_DECL(PMPI_File_iread, int, (MPI_File fh, void  *buf, int  count, MPI_Datatype  datatype, MPI_Request  *request));
DARSHAN_FORWARD_DECL(PMPI_File_iread_shared, int, (MPI_File fh, void *buf, int count, MPI_Datatype datatype, MPI_Request *request));
DARSHAN_FORWARD_DECL(PMPI_File_iwrite_at, int, (MPI_File fh, MPI_Offset offset, void *buf, int count, MPI_Datatype datatype, MPI_Request *request));
DARSHAN_FORWARD_DECL(PMPI_File_iwrite, int, (MPI_File fh, void *buf, int count, MPI_Datatype datatype, MPI_Request *request));
DARSHAN_FORWARD_DECL(PMPI_File_iwrite_shared, int, (MPI_File fh, void *buf, int count, MPI_Datatype datatype, MPI_Request *request));
DARSHAN_FORWARD_DECL(PMPI_File_open, int, (MPI_Comm comm, char *filename, int amode, MPI_Info info, MPI_File *fh));
DARSHAN_FORWARD_DECL(PMPI_File_read_all_begin, int, (MPI_File fh, void *buf, int count, MPI_Datatype datatype));
DARSHAN_FORWARD_DECL(PMPI_File_read_all, int, (MPI_File fh, void *buf, int count, MPI_Datatype datatype, MPI_Status *status));
DARSHAN_FORWARD_DECL(PMPI_File_read_at_all, int, (MPI_File fh, MPI_Offset offset, void *buf, int count, MPI_Datatype datatype, MPI_Status *status));
DARSHAN_FORWARD_DECL(PMPI_File_read_at_all_begin, int, (MPI_File fh, MPI_Offset offset, void *buf, int count, MPI_Datatype datatype));
DARSHAN_FORWARD_DECL(PMPI_File_read_at, int, (MPI_File fh, MPI_Offset offset, void *buf, int count, MPI_Datatype datatype, MPI_Status *status));
DARSHAN_FORWARD_DECL(PMPI_File_read, int, (MPI_File fh, void *buf, int count, MPI_Datatype datatype, MPI_Status *status));
DARSHAN_FORWARD_DECL(PMPI_File_read_ordered_begin, int, (MPI_File fh, void *buf, int count, MPI_Datatype datatype));
DARSHAN_FORWARD_DECL(PMPI_File_read_ordered, int, (MPI_File fh, void *buf, int count, MPI_Datatype datatype, MPI_Status *status));
DARSHAN_FORWARD_DECL(PMPI_File_read_shared, int, (MPI_File fh, void *buf, int count, MPI_Datatype datatype, MPI_Status *status));
DARSHAN_FORWARD_DECL(PMPI_File_set_view, int, (MPI_File fh, MPI_Offset disp, MPI_Datatype etype, MPI_Datatype filetype, char *datarep, MPI_Info info));
DARSHAN_FORWARD_DECL(PMPI_File_sync, int, (MPI_File fh));
DARSHAN_FORWARD_DECL(PMPI_File_write_all_begin, int, (MPI_File fh, void *buf, int count, MPI_Datatype datatype));
DARSHAN_FORWARD_DECL(PMPI_File_write_all, int, (MPI_File fh, void *buf, int count, MPI_Datatype datatype, MPI_Status *status));
DARSHAN_FORWARD_DECL(PMPI_File_write_at_all_begin, int, (MPI_File fh, MPI_Offset offset, void *buf, int count, MPI_Datatype datatype));
DARSHAN_FORWARD_DECL(PMPI_File_write_at_all, int, (MPI_File fh, MPI_Offset offset, void *buf, int count, MPI_Datatype datatype, MPI_Status *status));
DARSHAN_FORWARD_DECL(PMPI_File_write_at, int, (MPI_File fh, MPI_Offset offset, void *buf, int count, MPI_Datatype datatype, MPI_Status *status));
DARSHAN_FORWARD_DECL(PMPI_File_write, int, (MPI_File fh, void *buf, int count, MPI_Datatype datatype, MPI_Status *status));
DARSHAN_FORWARD_DECL(PMPI_File_write_ordered_begin, int, (MPI_File fh, void *buf, int count, MPI_Datatype datatype));
DARSHAN_FORWARD_DECL(PMPI_File_write_ordered, int, (MPI_File fh, void *buf, int count, MPI_Datatype datatype, MPI_Status *status));
DARSHAN_FORWARD_DECL(PMPI_File_write_shared, int, (MPI_File fh, void *buf, int count, MPI_Datatype datatype, MPI_Status *status));
DARSHAN_FORWARD_DECL(PMPI_Finalize, int, ());
DARSHAN_FORWARD_DECL(PMPI_Init, int, (int *argc, char ***argv));
DARSHAN_FORWARD_DECL(PMPI_Init_thread, int, (int *argc, char ***argv, int required, int *provided));

DARSHAN_FORWARD_DECL(PMPI_Wtime, double, ());
DARSHAN_FORWARD_DECL(PMPI_Allreduce, int, (void *sendbuf, void *recvbuf, int count, MPI_Datatype datatype, MPI_Op op, MPI_Comm comm));
DARSHAN_FORWARD_DECL(PMPI_Bcast, int, (void *buffer, int count, MPI_Datatype datatype, int root, MPI_Comm comm));
DARSHAN_FORWARD_DECL(PMPI_Comm_rank, int, (MPI_Comm comm, int *rank));
DARSHAN_FORWARD_DECL(PMPI_Comm_size, int, (MPI_Comm comm, int *size));
DARSHAN_FORWARD_DECL(PMPI_Scan, int, (void *sendbuf, void *recvbuf, int count, MPI_Datatype datatype, MPI_Op op, MPI_Comm comm));
DARSHAN_FORWARD_DECL(PMPI_Type_commit, int, (MPI_Datatype *datatype));
DARSHAN_FORWARD_DECL(PMPI_Type_contiguous, int, (int count, MPI_Datatype oldtype, MPI_Datatype *newtype));
DARSHAN_FORWARD_DECL(PMPI_Type_extent, int, (MPI_Datatype datatype, MPI_Aint *extent));
DARSHAN_FORWARD_DECL(PMPI_Type_free, int, (MPI_Datatype *datatype));
DARSHAN_FORWARD_DECL(PMPI_Type_hindexed, int, (int count, int *array_of_blocklengths, MPI_Aint *array_of_displacements, MPI_Datatype oldtype, MPI_Datatype *newtype));
DARSHAN_FORWARD_DECL(PMPI_Op_create, int, (MPI_User_function *function, int commute, MPI_Op *op));
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DARSHAN_FORWARD_DECL(PMPI_Op_free, int, (MPI_Op *op));
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DARSHAN_FORWARD_DECL(PMPI_Reduce, int, (void *sendbuf, void *recvbuf, int count, MPI_Datatype datatype, MPI_Op op, int root, MPI_Comm comm));
DARSHAN_FORWARD_DECL(PMPI_Type_get_envelope, int, (MPI_Datatype datatype, int *num_integers, int *num_addresses, int *num_datatypes, int *combiner));
DARSHAN_FORWARD_DECL(PMPI_Type_size, int, (MPI_Datatype datatype, int *size));

void resolve_mpi_symbols (void)
{
    /*
     * Overloaded functions
     */
    MAP_OR_FAIL(PMPI_File_close);
    MAP_OR_FAIL(PMPI_File_set_size);
    MAP_OR_FAIL(PMPI_File_iread_at);
    MAP_OR_FAIL(PMPI_File_iread);
    MAP_OR_FAIL(PMPI_File_iread_shared);
    MAP_OR_FAIL(PMPI_File_iwrite_at);
    MAP_OR_FAIL(PMPI_File_iwrite);
    MAP_OR_FAIL(PMPI_File_iwrite_shared);
    MAP_OR_FAIL(PMPI_File_open);
    MAP_OR_FAIL(PMPI_File_read_all_begin);
    MAP_OR_FAIL(PMPI_File_read_all);
    MAP_OR_FAIL(PMPI_File_read_at_all_begin);
    MAP_OR_FAIL(PMPI_File_read_at_all);
    MAP_OR_FAIL(PMPI_File_read_at);
    MAP_OR_FAIL(PMPI_File_read);
    MAP_OR_FAIL(PMPI_File_read_ordered_begin);
    MAP_OR_FAIL(PMPI_File_read_ordered);
    MAP_OR_FAIL(PMPI_File_read_shared);
    MAP_OR_FAIL(PMPI_File_set_view);
    MAP_OR_FAIL(PMPI_File_sync);
    MAP_OR_FAIL(PMPI_File_write_all_begin);
    MAP_OR_FAIL(PMPI_File_write_all);
    MAP_OR_FAIL(PMPI_File_write_at_all_begin);
    MAP_OR_FAIL(PMPI_File_write_at_all);
    MAP_OR_FAIL(PMPI_File_write_at);
    MAP_OR_FAIL(PMPI_File_write);
    MAP_OR_FAIL(PMPI_File_write_ordered_begin);
    MAP_OR_FAIL(PMPI_File_write_ordered);
    MAP_OR_FAIL(PMPI_File_write_shared);
    MAP_OR_FAIL(PMPI_Finalize);
    MAP_OR_FAIL(PMPI_Init);
    MAP_OR_FAIL(PMPI_Init_thread);

    /*
     * These function are not intercepted but are used
     * by darshan itself.
     */
    MAP_OR_FAIL(PMPI_Wtime);
    MAP_OR_FAIL(PMPI_Allreduce);
    MAP_OR_FAIL(PMPI_Bcast);
    MAP_OR_FAIL(PMPI_Comm_rank);
    MAP_OR_FAIL(PMPI_Comm_size);
    MAP_OR_FAIL(PMPI_Scan);
    MAP_OR_FAIL(PMPI_Type_commit);
    MAP_OR_FAIL(PMPI_Type_contiguous);
    MAP_OR_FAIL(PMPI_Type_extent);
    MAP_OR_FAIL(PMPI_Type_free);
    MAP_OR_FAIL(PMPI_Type_size);
    MAP_OR_FAIL(PMPI_Type_hindexed);
    MAP_OR_FAIL(PMPI_Op_create);
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    MAP_OR_FAIL(PMPI_Op_free);
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    MAP_OR_FAIL(PMPI_Reduce);
    MAP_OR_FAIL(PMPI_Type_get_envelope);

    return;
}

#else

#define DARSHAN_MPI_CALL(func) func

#endif

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extern char* __progname;

/* maximum number of memory segments each process will write to the log */
#define CP_MAX_MEM_SEGMENTS 8

#define CP_DATATYPE_INC(__file, __datatype) do {\
    int num_integers, num_addresses, num_datatypes, combiner, ret; \
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    ret = DARSHAN_MPI_CALL(PMPI_Type_get_envelope)(__datatype, &num_integers, \
        &num_addresses, &num_datatypes, &combiner); \
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    if(ret == MPI_SUCCESS) { \
        switch(combiner) { \
            case MPI_COMBINER_NAMED:\
                CP_INC(__file,CP_COMBINER_NAMED,1); break; \
            case MPI_COMBINER_DUP:\
                CP_INC(__file,CP_COMBINER_DUP,1); break; \
            case MPI_COMBINER_CONTIGUOUS:\
                CP_INC(__file,CP_COMBINER_CONTIGUOUS,1); break; \
            case MPI_COMBINER_VECTOR:\
                CP_INC(__file,CP_COMBINER_VECTOR,1); break; \
            case MPI_COMBINER_HVECTOR_INTEGER:\
                CP_INC(__file,CP_COMBINER_HVECTOR_INTEGER,1); break; \
            case MPI_COMBINER_HVECTOR:\
                CP_INC(__file,CP_COMBINER_HVECTOR,1); break; \
            case MPI_COMBINER_INDEXED:\
                CP_INC(__file,CP_COMBINER_INDEXED,1); break; \
            case MPI_COMBINER_HINDEXED_INTEGER:\
                CP_INC(__file,CP_COMBINER_HINDEXED_INTEGER,1); break; \
            case MPI_COMBINER_HINDEXED:\
                CP_INC(__file,CP_COMBINER_HINDEXED,1); break; \
            case MPI_COMBINER_INDEXED_BLOCK:\
                CP_INC(__file,CP_COMBINER_INDEXED_BLOCK,1); break; \
            case MPI_COMBINER_STRUCT_INTEGER:\
                CP_INC(__file,CP_COMBINER_STRUCT_INTEGER,1); break; \
            case MPI_COMBINER_STRUCT:\
                CP_INC(__file,CP_COMBINER_STRUCT,1); break; \
            case MPI_COMBINER_SUBARRAY:\
                CP_INC(__file,CP_COMBINER_SUBARRAY,1); break; \
            case MPI_COMBINER_DARRAY:\
                CP_INC(__file,CP_COMBINER_DARRAY,1); break; \
            case MPI_COMBINER_F90_REAL:\
                CP_INC(__file,CP_COMBINER_F90_REAL,1); break; \
            case MPI_COMBINER_F90_COMPLEX:\
                CP_INC(__file,CP_COMBINER_F90_COMPLEX,1); break; \
            case MPI_COMBINER_F90_INTEGER:\
                CP_INC(__file,CP_COMBINER_F90_INTEGER,1); break; \
            case MPI_COMBINER_RESIZED:\
                CP_INC(__file,CP_COMBINER_RESIZED,1); break; \
        } \
    } \
} while(0)

#define CP_RECORD_MPI_WRITE(__ret, __fh, __count, __datatype, __counter, __tm1, __tm2) do { \
    struct darshan_file_runtime* file; \
    int size = 0; \
    MPI_Aint extent = 0; \
    if(__ret != MPI_SUCCESS) break; \
    file = darshan_file_by_fh(__fh); \
    if(!file) break; \
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    DARSHAN_MPI_CALL(PMPI_Type_size)(__datatype, &size);  \
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    size = size * __count; \
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    DARSHAN_MPI_CALL(PMPI_Type_extent)(__datatype, &extent); \
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    CP_BUCKET_INC(file, CP_SIZE_WRITE_AGG_0_100, size); \
    CP_BUCKET_INC(file, CP_EXTENT_WRITE_0_100, extent); \
    CP_INC(file, __counter, 1); \
    CP_DATATYPE_INC(file, __datatype); \
    CP_F_INC(file, CP_F_MPI_WRITE_TIME, (__tm2-__tm1)); \
    if(CP_F_VALUE(file, CP_F_WRITE_START_TIMESTAMP) == 0) \
        CP_F_SET(file, CP_F_WRITE_START_TIMESTAMP, __tm1); \
    CP_F_SET(file, CP_F_WRITE_END_TIMESTAMP, __tm2); \
} while(0)

#define CP_RECORD_MPI_READ(__ret, __fh, __count, __datatype, __counter, __tm1, __tm2) do { \
    struct darshan_file_runtime* file; \
    int size = 0; \
    MPI_Aint extent = 0; \
    if(__ret != MPI_SUCCESS) break; \
    file = darshan_file_by_fh(__fh); \
    if(!file) break; \
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    DARSHAN_MPI_CALL(PMPI_Type_size)(__datatype, &size);  \
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    size = size * __count; \
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    DARSHAN_MPI_CALL(PMPI_Type_extent)(__datatype, &extent); \
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    CP_BUCKET_INC(file, CP_SIZE_READ_AGG_0_100, size); \
    CP_BUCKET_INC(file, CP_EXTENT_READ_0_100, extent); \
    CP_INC(file, __counter, 1); \
    CP_DATATYPE_INC(file, __datatype); \
    CP_F_INC(file, CP_F_MPI_READ_TIME, (__tm2-__tm1)); \
    if(CP_F_VALUE(file, CP_F_READ_START_TIMESTAMP) == 0) \
        CP_F_SET(file, CP_F_READ_START_TIMESTAMP, __tm1); \
    CP_F_SET(file, CP_F_READ_END_TIMESTAMP, __tm2); \
} while(0)

static struct darshan_file_runtime* darshan_file_by_fh(MPI_File fh);
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static void cp_log_construct_indices(struct darshan_job_runtime* final_job,
    int rank, int* inout_count, int* lengths, void** pointers, char*
    trailing_data);
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static int cp_log_write(struct darshan_job_runtime* final_job, int rank, 
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    char* logfile_name, int count, int* lengths, void** pointers, double start_log_time);
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static int cp_log_reduction(struct darshan_job_runtime* final_job, int rank, 
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    char* logfile_name, MPI_Offset* next_offset);
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static void darshan_file_reduce(void* infile_v, 
    void* inoutfile_v, int *len, 
    MPI_Datatype *datatype);
static int cp_log_compress(struct darshan_job_runtime* final_job,
    int rank, int* inout_count, int* lengths, void** pointers);
static int file_compare(const void* a, const void* b);
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static void darshan_mpi_initialize(int *argc, char ***argv);
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static char*  darshan_get_exe_and_mounts(struct darshan_job_runtime* final_job);
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static int darshan_file_variance(
    struct darshan_file *infile_array,
    struct darshan_file *outfile_array,
    int count, int rank);
static void pairwise_variance_reduce (
    void *invec, void *inoutvec, int *len, MPI_Datatype *dt);

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#define CP_MAX_MNTS 32
uint64_t mnt_hash_array[CP_MAX_MNTS] = {0};
int64_t mnt_id_array[CP_MAX_MNTS] = {0};
uint64_t mnt_hash_array_root[CP_MAX_MNTS] = {0};
int64_t mnt_id_array_root[CP_MAX_MNTS] = {0};
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struct
{
    int64_t mnt_id_local;
    int64_t mnt_id_root;
} mnt_mapping[CP_MAX_MNTS];
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struct variance_dt
{
    double n;
    double T;
    double S;
};

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int MPI_Init(int *argc, char ***argv)
{
    int ret;

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#ifdef DARSHAN_PRELOAD
    resolve_mpi_symbols();
#endif

    ret = DARSHAN_MPI_CALL(PMPI_Init)(argc, argv);
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    if(ret != MPI_SUCCESS)
    {
        return(ret);
    }

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    darshan_mpi_initialize(argc, argv);

    return(ret);
}

int MPI_Init_thread (int *argc, char ***argv, int required, int *provided)
{
    int ret;

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    ret = DARSHAN_MPI_CALL(PMPI_Init_thread)(argc, argv, required, provided);
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    if (ret != MPI_SUCCESS)
    {
        return(ret);
    }

    darshan_mpi_initialize(argc, argv);

    return(ret);
}

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static void darshan_mpi_initialize(int *argc, char ***argv)
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{
    int nprocs;
    int rank;

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    DARSHAN_MPI_CALL(PMPI_Comm_size)(MPI_COMM_WORLD, &nprocs);
    DARSHAN_MPI_CALL(PMPI_Comm_rank)(MPI_COMM_WORLD, &rank);
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    if(argc && argv)
    {
        darshan_initialize(*argc, *argv, nprocs, rank);
    }
    else
    {
        /* we don't see argc and argv here in fortran */
        darshan_initialize(0, NULL, nprocs, rank);
    }

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    return;
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}

void darshan_shutdown(int timing_flag)
{
    int rank;
    char* logfile_name;
    struct darshan_job_runtime* final_job;
    double start_log_time = 0;
    int flags;
    int all_ret = 0;
    int local_ret = 0;
    MPI_Offset next_offset = 0;
    char* jobid_str;
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    char* envjobid;
    char* logpath;
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    int jobid;
    int index_count = 0;
    int lengths[CP_MAX_MEM_SEGMENTS];
    void* pointers[CP_MAX_MEM_SEGMENTS];
    int ret;
    double red1=0, red2=0, gz1=0, gz2=0, write1=0, write2=0, tm_end=0;
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    double bcst1=0, bcst2=0, bcst3=0;
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    int nprocs;
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    char* trailing_data = NULL;
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    int i, j;
    int map_index = 0;
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    time_t start_time_tmp = 0;
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    uint64_t logmod;
    char hname[HOST_NAME_MAX];
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    CP_LOCK();
    if(!darshan_global_job)
    {
        CP_UNLOCK();
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        return;
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    }
    /* disable further tracing while hanging onto the data so that we can
     * write it out
     */
    final_job = darshan_global_job;
    darshan_global_job = NULL;
    flags = final_job->flags;
    CP_UNLOCK();

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    start_log_time = DARSHAN_MPI_CALL(PMPI_Wtime)();
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    /* figure out which access sizes to log */
    darshan_walk_file_accesses(final_job);

    /* if the records have been condensed, then zero out fields that are no
     * longer valid for safety 
     */
    if(final_job->flags & CP_FLAG_CONDENSED && final_job->file_count)
    {
        CP_SET(&final_job->file_runtime_array[0], CP_MODE, 0);
        CP_SET(&final_job->file_runtime_array[0], CP_CONSEC_READS, 0);
        CP_SET(&final_job->file_runtime_array[0], CP_CONSEC_WRITES, 0);
        CP_SET(&final_job->file_runtime_array[0], CP_SEQ_READS, 0);
        CP_SET(&final_job->file_runtime_array[0], CP_SEQ_WRITES, 0);
        CP_SET(&final_job->file_runtime_array[0], CP_STRIDE1_STRIDE, 0);
        CP_SET(&final_job->file_runtime_array[0], CP_STRIDE2_STRIDE, 0);
        CP_SET(&final_job->file_runtime_array[0], CP_STRIDE3_STRIDE, 0);
        CP_SET(&final_job->file_runtime_array[0], CP_STRIDE4_STRIDE, 0);
        CP_SET(&final_job->file_runtime_array[0], CP_STRIDE1_COUNT, 0);
        CP_SET(&final_job->file_runtime_array[0], CP_STRIDE2_COUNT, 0);
        CP_SET(&final_job->file_runtime_array[0], CP_STRIDE3_COUNT, 0);
        CP_SET(&final_job->file_runtime_array[0], CP_STRIDE4_COUNT, 0);
        CP_SET(&final_job->file_runtime_array[0], CP_ACCESS1_ACCESS, 0);
        CP_SET(&final_job->file_runtime_array[0], CP_ACCESS2_ACCESS, 0);
        CP_SET(&final_job->file_runtime_array[0], CP_ACCESS3_ACCESS, 0);
        CP_SET(&final_job->file_runtime_array[0], CP_ACCESS4_ACCESS, 0);
        CP_SET(&final_job->file_runtime_array[0], CP_ACCESS1_COUNT, 0);
        CP_SET(&final_job->file_runtime_array[0], CP_ACCESS2_COUNT, 0);
        CP_SET(&final_job->file_runtime_array[0], CP_ACCESS3_COUNT, 0);
        CP_SET(&final_job->file_runtime_array[0], CP_ACCESS4_COUNT, 0);
        
        CP_F_SET(&final_job->file_runtime_array[0], CP_F_OPEN_TIMESTAMP, 0);
        CP_F_SET(&final_job->file_runtime_array[0], CP_F_CLOSE_TIMESTAMP, 0);
        CP_F_SET(&final_job->file_runtime_array[0], CP_F_READ_START_TIMESTAMP, 0);
        CP_F_SET(&final_job->file_runtime_array[0], CP_F_READ_END_TIMESTAMP, 0);
        CP_F_SET(&final_job->file_runtime_array[0], CP_F_WRITE_START_TIMESTAMP, 0);
        CP_F_SET(&final_job->file_runtime_array[0], CP_F_WRITE_END_TIMESTAMP, 0);
    }

    logfile_name = malloc(PATH_MAX);
    if(!logfile_name)
    {
        darshan_finalize(final_job);
        return;
    }

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    DARSHAN_MPI_CALL(PMPI_Comm_rank)(MPI_COMM_WORLD, &rank);
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    /* collect information about command line and 
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     * mounted file systems 
     */
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    trailing_data = darshan_get_exe_and_mounts(final_job);

    /* broadcast mount point information from root */
    if(rank == 0)
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    {
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        memcpy(mnt_hash_array_root, mnt_hash_array,
            CP_MAX_MNTS*sizeof(uint64_t));
        memcpy(mnt_id_array_root, mnt_id_array,
            CP_MAX_MNTS*sizeof(int64_t));
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    }
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    bcst1=DARSHAN_MPI_CALL(PMPI_Wtime)();
    DARSHAN_MPI_CALL(PMPI_Bcast)(mnt_id_array_root,
        CP_MAX_MNTS*sizeof(int64_t), MPI_BYTE, 0, MPI_COMM_WORLD);
    DARSHAN_MPI_CALL(PMPI_Bcast)(mnt_hash_array_root,
        CP_MAX_MNTS*sizeof(uint64_t), MPI_BYTE, 0, MPI_COMM_WORLD);
    bcst2=DARSHAN_MPI_CALL(PMPI_Wtime)();
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    /* identify any common mount points that have different device ids on
     * non-root processes
     */
    for(i=0; (i<CP_MAX_MNTS && mnt_hash_array_root[i] != 0); i++)
    {
        for(j=0; (j<CP_MAX_MNTS && mnt_hash_array[j] != 0); j++)
        {
            if(mnt_hash_array_root[i] == mnt_hash_array[j])
            {
                /* found a shared mount point */
                if(mnt_id_array_root[i] != mnt_id_array[j])
                {
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                    /* mismatching ids; record correct mapping */
                    mnt_mapping[map_index].mnt_id_local =
                        mnt_id_array[j];
                    mnt_mapping[map_index].mnt_id_root = 
                        mnt_id_array_root[i];
                    map_index++;
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                }
                break;
            }
        }
    }
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    /* adjust affected file records */
    for(i=0; (i<final_job->file_count && map_index > 0); i++)
    {
        for(j=0; j<map_index; j++)
        {
            if(final_job->file_array[i].counters[CP_DEVICE] ==
                mnt_mapping[j].mnt_id_local)
            {
                final_job->file_array[i].counters[CP_DEVICE] =  
                    mnt_mapping[j].mnt_id_root;
                break;
            }
        }
    }
   
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    /* construct log file name */
    if(rank == 0)
    {
        char cuser[L_cuserid] = {0};
        struct tm* my_tm;

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        /* Use CP_JOBID_OVERRIDE for the env var or CP_JOBID */
        envjobid = getenv(CP_JOBID_OVERRIDE);
        if (!envjobid)
        {
            envjobid = CP_JOBID;
        }

        /* Use CP_LOG_PATH_OVERRIDE for the value or __CP_LOG_PATH */
        logpath = getenv(CP_LOG_PATH_OVERRIDE);
        if (!logpath)
        {
            logpath = __CP_LOG_PATH;
        }

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        /* find a job id */
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        jobid_str = getenv(envjobid);
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        if(jobid_str)
        {
            /* in cobalt we can find it in env var */
            ret = sscanf(jobid_str, "%d", &jobid);
        }
        if(!jobid_str || ret != 1)
        {
            /* use pid as fall back */
            jobid = getpid();
        }

        /* break out time into something human readable */
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        start_time_tmp += final_job->log_job.start_time;
        my_tm = localtime(&start_time_tmp);
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        /* note: getpwuid() causes link errors for static binaries */
        cuserid(cuser);

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        /* generate a random number to help differentiate the log */
        (void) gethostname(hname, sizeof(hname));
        logmod = darshan_hash((void*)hname,strlen(hname),0);

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        ret = snprintf(logfile_name, PATH_MAX, 
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            "%s/%d/%d/%d/%s_%s_id%d_%d-%d-%d-%llu.darshan_partial",
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            logpath, (my_tm->tm_year+1900), 
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            (my_tm->tm_mon+1), my_tm->tm_mday, 
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            cuser, __progname, jobid,
            (my_tm->tm_mon+1), 
            my_tm->tm_mday, 
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            (my_tm->tm_hour*60*60 + my_tm->tm_min*60 + my_tm->tm_sec),
            llu(logmod));
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        if(ret == (PATH_MAX-1))
        {
            /* file name was too big; squish it down */
            snprintf(logfile_name, PATH_MAX,
                "%s/id%d.darshan_partial",
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                logpath, jobid);
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        }
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        /* add jobid */
        final_job->log_job.jobid = (int64_t)jobid;
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    }

    /* broadcast log file name */
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    bcst3=DARSHAN_MPI_CALL(PMPI_Wtime)();
    DARSHAN_MPI_CALL(PMPI_Bcast)(logfile_name, PATH_MAX, MPI_CHAR, 0,
        MPI_COMM_WORLD);
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    final_job->log_job.end_time = time(NULL);

    /* reduce records for shared files */
    if(timing_flag)
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        red1 = DARSHAN_MPI_CALL(PMPI_Wtime)();
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    local_ret = cp_log_reduction(final_job, rank, logfile_name, 
        &next_offset);
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    if(timing_flag)
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        red2 = DARSHAN_MPI_CALL(PMPI_Wtime)();
    DARSHAN_MPI_CALL(PMPI_Allreduce)(&local_ret, &all_ret, 1, MPI_INT, MPI_LOR, 
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        MPI_COMM_WORLD);

    if(all_ret == 0)
    {
        /* collect data to write from local process */
        cp_log_construct_indices(final_job, rank, &index_count, lengths, 
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            pointers, trailing_data);
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    }

    if(all_ret == 0)
    {
        /* compress data */
        if(timing_flag)
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            gz1 = DARSHAN_MPI_CALL(PMPI_Wtime)();
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        local_ret = cp_log_compress(final_job, rank, &index_count, 
            lengths, pointers);
        if(timing_flag)
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            gz2 = DARSHAN_MPI_CALL(PMPI_Wtime)();
        DARSHAN_MPI_CALL(PMPI_Allreduce)(&local_ret, &all_ret, 1,
            MPI_INT, MPI_LOR, MPI_COMM_WORLD);
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    }

    if(all_ret == 0)
    {
        /* actually write out log file */
        if(timing_flag)
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            write1 = DARSHAN_MPI_CALL(PMPI_Wtime)();
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        local_ret = cp_log_write(final_job, rank, logfile_name, 
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            index_count, lengths, pointers, start_log_time);
        if(timing_flag)
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            write2 = DARSHAN_MPI_CALL(PMPI_Wtime)();
        DARSHAN_MPI_CALL(PMPI_Allreduce)(&local_ret, &all_ret, 1,
            MPI_INT, MPI_LOR, MPI_COMM_WORLD);
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    }

    /* if any process failed to write log, then delete the whole file so we
     * don't leave corrupted results
     */
    if(all_ret != 0 && rank == 0)
    {
        unlink(logfile_name);
    }

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    if(trailing_data)
        free(trailing_data);
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    free(logfile_name);
    darshan_finalize(final_job);
    
    if(timing_flag)
    {
        double red_tm, red_slowest;
        double gz_tm, gz_slowest;
        double write_tm, write_slowest;
        double all_tm, all_slowest;
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        double bcst_tm, bcst_slowest;
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        tm_end = DARSHAN_MPI_CALL(PMPI_Wtime)();
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        bcst_tm=(bcst2-bcst1)+(red1-bcst3);
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        red_tm = red2-red1;
        gz_tm = gz2-gz1;
        write_tm = write2-write1;
        all_tm = tm_end-start_log_time;

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        DARSHAN_MPI_CALL(PMPI_Allreduce)(&red_tm, &red_slowest, 1,
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            MPI_DOUBLE, MPI_MAX, MPI_COMM_WORLD);
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        DARSHAN_MPI_CALL(PMPI_Allreduce)(&gz_tm, &gz_slowest, 1,
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            MPI_DOUBLE, MPI_MAX, MPI_COMM_WORLD);
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        DARSHAN_MPI_CALL(PMPI_Allreduce)(&write_tm, &write_slowest, 1,
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            MPI_DOUBLE, MPI_MAX, MPI_COMM_WORLD);
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        DARSHAN_MPI_CALL(PMPI_Allreduce)(&all_tm, &all_slowest, 1,
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            MPI_DOUBLE, MPI_MAX, MPI_COMM_WORLD);
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        DARSHAN_MPI_CALL(PMPI_Allreduce)(&bcst_tm, &bcst_slowest, 1,
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            MPI_DOUBLE, MPI_MAX, MPI_COMM_WORLD);
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        if(rank == 0)
        {
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            DARSHAN_MPI_CALL(PMPI_Comm_size)(MPI_COMM_WORLD, &nprocs);
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            printf("#<op>\t<nprocs>\t<time>\n");
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            printf("bcst\t%d\t%f\n", nprocs, bcst_slowest);
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            printf("reduce\t%d\t%f\n", nprocs, red_slowest);
            printf("gzip\t%d\t%f\n", nprocs, gz_slowest);
            printf("write\t%d\t%f\n", nprocs, write_slowest);
            printf("all\t%d\t%f\n", nprocs, all_slowest);
        }
    }

    return;
}

int MPI_Finalize(void)
{
    int ret;

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    if(getenv("DARSHAN_INTERNAL_TIMING"))
        darshan_shutdown(1);
    else
        darshan_shutdown(0);
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    ret = DARSHAN_MPI_CALL(PMPI_Finalize)();
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    return(ret);
}

int MPI_File_open(MPI_Comm comm, char *filename, int amode, MPI_Info info, MPI_File *fh) 
{
    int ret;
    struct darshan_file_runtime* file;
    char* tmp;
    int comm_size;
    int hash_index;
    uint64_t tmp_hash;
    double tm1, tm2;

    tm1 = darshan_wtime();
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    ret = DARSHAN_MPI_CALL(PMPI_File_open)(comm, filename, amode, info, fh);
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    tm2 = darshan_wtime();

    if(ret == MPI_SUCCESS)
    {
        CP_LOCK();

        /* use ROMIO approach to strip prefix if present */
        /* strip off prefix if there is one, but only skip prefixes
         * if they are greater than length one to allow for windows
         * drive specifications (e.g. c:\...) 
         */
        tmp = strchr(filename, ':');
        if (tmp > filename + 1) {
            filename = tmp + 1;
        }

        file = darshan_file_by_name(filename);
        /* TODO: handle the case of multiple concurrent opens */
        if(file && (file->fh == MPI_FILE_NULL))
        {
            file->fh = *fh;
            CP_SET(file, CP_MODE, amode);
            CP_F_INC(file, CP_F_MPI_META_TIME, (tm2-tm1));
            if(CP_F_VALUE(file, CP_F_OPEN_TIMESTAMP) == 0)
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                CP_F_SET(file, CP_F_OPEN_TIMESTAMP,
                DARSHAN_MPI_CALL(PMPI_Wtime)());
            DARSHAN_MPI_CALL(PMPI_Comm_size)(comm, &comm_size);
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            if(comm_size == 1)
            {
                CP_INC(file, CP_INDEP_OPENS, 1);
            }
            else
            {
                CP_INC(file, CP_COLL_OPENS, 1);
            }
            if(info != MPI_INFO_NULL)
            {
                CP_INC(file, CP_HINTS, 1);
            }
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            tmp_hash = darshan_hash((void*)fh, sizeof(*fh), 0);
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            hash_index = tmp_hash & CP_HASH_MASK;
            file->fh_prev = NULL;
            file->fh_next = darshan_global_job->fh_table[hash_index];
            if(file->fh_next)
                file->fh_next->fh_prev = file;
            darshan_global_job->fh_table[hash_index] = file;
        }
        CP_UNLOCK();
    }

    return(ret);
}

int MPI_File_close(MPI_File *fh) 
{
    int hash_index;
    uint64_t tmp_hash;
    struct darshan_file_runtime* file;
    MPI_File tmp_fh = *fh;
    double tm1, tm2;
    int ret;
    
    tm1 = darshan_wtime();
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    ret = DARSHAN_MPI_CALL(PMPI_File_close)(fh);
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    tm2 = darshan_wtime();

    CP_LOCK();
    file = darshan_file_by_fh(tmp_fh);
    if(file)
    {
        file->fh = MPI_FILE_NULL;
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        CP_F_SET(file, CP_F_CLOSE_TIMESTAMP, DARSHAN_MPI_CALL(PMPI_Wtime)());
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        CP_F_INC(file, CP_F_MPI_META_TIME, (tm2-tm1));
        if(file->fh_prev == NULL)
        {
            /* head of fh hash table list */
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            tmp_hash = darshan_hash((void*)&tmp_fh, sizeof(tmp_fh), 0);
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            hash_index = tmp_hash & CP_HASH_MASK;
            darshan_global_job->fh_table[hash_index] = file->fh_next;
            if(file->fh_next)
                file->fh_next->fh_prev = NULL;
        }
        else
        {
            if(file->fh_prev)
                file->fh_prev->fh_next = file->fh_next;
            if(file->fh_next)
                file->fh_next->fh_prev = file->fh_prev;
        }
        file->fh_prev = NULL;
        file->fh_next = NULL;
        darshan_global_job->darshan_mru_file = file; /* in case we open it again, or hit posix calls */
    }
    CP_UNLOCK();

    return(ret);
}

int MPI_File_sync(MPI_File fh)
{
    int ret;
    struct darshan_file_runtime* file;
    double tm1, tm2;

    tm1 = darshan_wtime();
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    ret = DARSHAN_MPI_CALL(PMPI_File_sync)(fh);
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    tm2 = darshan_wtime();
    if(ret == MPI_SUCCESS)
    {
        CP_LOCK();
        file = darshan_file_by_fh(fh);
        if(file)
        {
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            CP_F_INC(file, CP_F_MPI_WRITE_TIME, (tm2-tm1));
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            CP_INC(file, CP_SYNCS, 1);
        }
        CP_UNLOCK();
    }

    return(ret);
}


int MPI_File_set_view(MPI_File fh, MPI_Offset disp, MPI_Datatype etype, 
    MPI_Datatype filetype, char *datarep, MPI_Info info)
{
    int ret;
    struct darshan_file_runtime* file;
    double tm1, tm2;

    tm1 = darshan_wtime();
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    ret = DARSHAN_MPI_CALL(PMPI_File_set_view)(fh, disp, etype,
        filetype, datarep, info);
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    tm2 = darshan_wtime();
    if(ret == MPI_SUCCESS)
    {
        CP_LOCK();
        file = darshan_file_by_fh(fh);
        if(file)
        {
            CP_INC(file, CP_VIEWS, 1);
            if(info != MPI_INFO_NULL)
            {
                CP_F_INC(file, CP_F_MPI_META_TIME, (tm2-tm1));
                CP_INC(file, CP_HINTS, 1);
            }
            CP_DATATYPE_INC(file, filetype);
        }
        CP_UNLOCK();
    }

    return(ret);
}

int MPI_File_read(MPI_File fh, void *buf, int count, 
    MPI_Datatype datatype, MPI_Status *status)
{
    int ret;
    double tm1, tm2;

    tm1 = darshan_wtime();
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    ret = DARSHAN_MPI_CALL(PMPI_File_read)(fh, buf, count, datatype, status);
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    tm2 = darshan_wtime();
    CP_LOCK();
    CP_RECORD_MPI_READ(ret, fh, count, datatype, CP_INDEP_READS, tm1, tm2);
    CP_UNLOCK();
    return(ret);
}

int MPI_File_read_at(MPI_File fh, MPI_Offset offset, void *buf,
    int count, MPI_Datatype datatype, MPI_Status *status)
{
    int ret;
    double tm1, tm2;

    tm1 = darshan_wtime();
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    ret = DARSHAN_MPI_CALL(PMPI_File_read_at)(fh, offset, buf,
        count, datatype, status);
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    tm2 = darshan_wtime();
    CP_LOCK();
    CP_RECORD_MPI_READ(ret, fh, count, datatype, CP_INDEP_READS, tm1, tm2);
    CP_UNLOCK();
    return(ret);
}

int MPI_File_read_at_all(MPI_File fh, MPI_Offset offset, void * buf,
    int count, MPI_Datatype datatype, MPI_Status * status)
{
    int ret;
    double tm1, tm2;

    tm1 = darshan_wtime();
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    ret = DARSHAN_MPI_CALL(PMPI_File_read_at_all)(fh, offset, buf,
        count, datatype, status);
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    tm2 = darshan_wtime();
    CP_LOCK();
    CP_RECORD_MPI_READ(ret, fh, count, datatype, CP_COLL_READS, tm1, tm2);
    CP_UNLOCK();
    return(ret);
}

int MPI_File_read_all(MPI_File fh, void * buf, int count, MPI_Datatype datatype, MPI_Status *status)
{
    int ret;
    double tm1, tm2;

    tm1 = darshan_wtime();
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    ret = DARSHAN_MPI_CALL(PMPI_File_read_all)(fh, buf, count,
        datatype, status);
910
911
912
913
914
915
916
917
918
919
920
921
922
    tm2 = darshan_wtime();
    CP_LOCK();
    CP_RECORD_MPI_READ(ret, fh, count, datatype, CP_COLL_READS, tm1, tm2);
    CP_UNLOCK();
    return(ret);
}

int MPI_File_read_shared(MPI_File fh, void * buf, int count, MPI_Datatype datatype, MPI_Status *status)
{
    int ret;
    double tm1, tm2;

    tm1 = darshan_wtime();
923
924
    ret = DARSHAN_MPI_CALL(PMPI_File_read_shared)(fh, buf, count,
        datatype, status);
925
926
927
928
929
930
931
932
933
934
935
936
937
938
    tm2 = darshan_wtime();
    CP_LOCK();
    CP_RECORD_MPI_READ(ret, fh, count, datatype, CP_INDEP_READS, tm1, tm2);
    CP_UNLOCK();
    return(ret);
}

int MPI_File_read_ordered(MPI_File fh, void * buf, int count, 
    MPI_Datatype datatype, MPI_Status * status)
{
    int ret;
    double tm1, tm2;

    tm1 = darshan_wtime();
939
940
    ret = DARSHAN_MPI_CALL(PMPI_File_read_ordered)(fh, buf, count,
        datatype, status);
941
942
943
944
945
946
947
948
949
950
951
952
953
954
    tm2 = darshan_wtime();
    CP_LOCK();
    CP_RECORD_MPI_READ(ret, fh, count, datatype, CP_COLL_READS, tm1, tm2);
    CP_UNLOCK();
    return(ret);
}

int MPI_File_read_at_all_begin(MPI_File fh, MPI_Offset offset, void * buf,
    int count, MPI_Datatype datatype)
{
    int ret;
    double tm1, tm2;

    tm1 = darshan_wtime();
955
956
    ret = DARSHAN_MPI_CALL(PMPI_File_read_at_all_begin)(fh, offset, buf,
        count, datatype);
957
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959
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961
962
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964
965
966
967
968
969
    tm2 = darshan_wtime();
    CP_LOCK();
    CP_RECORD_MPI_READ(ret, fh, count, datatype, CP_SPLIT_READS, tm1, tm2);
    CP_UNLOCK();
    return(ret);
}

int MPI_File_read_all_begin(MPI_File fh, void * buf, int count, MPI_Datatype datatype)
{
    int ret;
    double tm1, tm2;

    tm1 = darshan_wtime();
970
    ret = DARSHAN_MPI_CALL(PMPI_File_read_all_begin)(fh, buf, count, datatype);
971
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973
974
975
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977
978
979
980
981
982
983
    tm2 = darshan_wtime();
    CP_LOCK();
    CP_RECORD_MPI_READ(ret, fh, count, datatype, CP_SPLIT_READS, tm1, tm2);
    CP_UNLOCK();
    return(ret);
}

int MPI_File_read_ordered_begin(MPI_File fh, void * buf, int count, MPI_Datatype datatype)
{
    int ret;
    double tm1, tm2;

    tm1 = darshan_wtime();
984
985
    ret = DARSHAN_MPI_CALL(PMPI_File_read_ordered_begin)(fh, buf, count,
        datatype);
986
987
988
989
990
991
992
993
    tm2 = darshan_wtime();
    CP_LOCK();
    CP_RECORD_MPI_READ(ret, fh, count, datatype, CP_SPLIT_READS, tm1, tm2);
    CP_UNLOCK();
    return(ret);
}

int MPI_File_iread_at(MPI_File fh, MPI_Offset offset, void * buf,
994
    int count, MPI_Datatype datatype, MPI_Request *request)
995
996
997
998
999
{
    int ret;
    double tm1, tm2;

    tm1 = darshan_wtime();
1000
1001
    ret = DARSHAN_MPI_CALL(PMPI_File_iread_at)(fh, offset, buf, count,
        datatype, request);
1002
1003
1004
1005
1006
1007
1008
    tm2 = darshan_wtime();
    CP_LOCK();
    CP_RECORD_MPI_READ(ret, fh, count, datatype, CP_NB_READS, tm1, tm2);
    CP_UNLOCK();
    return(ret);
}

1009
int MPI_File_iread(MPI_File fh, void * buf, int count, MPI_Datatype datatype, MPI_Request * request)
1010
1011
1012
1013
1014
{
    int ret;
    double tm1, tm2;

    tm1 = darshan_wtime();
1015
    ret = DARSHAN_MPI_CALL(PMPI_File_iread)(fh, buf, count, datatype, request);
1016
1017
1018
1019
1020
1021
1022
1023
    tm2 = darshan_wtime();
    CP_LOCK();
    CP_RECORD_MPI_READ(ret, fh, count, datatype, CP_NB_READS, tm1, tm2);
    CP_UNLOCK();
    return(ret);
}

int MPI_File_iread_shared(MPI_File fh, void * buf, int count,
1024
    MPI_Datatype datatype, MPI_Request * request)
1025
1026
1027
1028
1029
{
    int ret;
    double tm1, tm2;

    tm1 = darshan_wtime();
1030
1031
    ret = DARSHAN_MPI_CALL(PMPI_File_iread_shared)(fh, buf, count,
        datatype, request);
1032
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1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
    tm2 = darshan_wtime();
    CP_LOCK();
    CP_RECORD_MPI_READ(ret, fh, count, datatype, CP_NB_READS, tm1, tm2);
    CP_UNLOCK();
    return(ret);
}


int MPI_File_write(MPI_File fh, void *buf, int count, 
    MPI_Datatype datatype, MPI_Status *status)
{
    int ret;
    double tm1, tm2;

    tm1 = darshan_wtime();
1047
    ret = DARSHAN_MPI_CALL(PMPI_File_write)(fh, buf, count, datatype, status);
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
    tm2 = darshan_wtime();
    CP_LOCK();
    CP_RECORD_MPI_WRITE(ret, fh, count, datatype, CP_INDEP_WRITES, tm1, tm2);
    CP_UNLOCK();
    return(ret);
}

int MPI_File_write_at(MPI_File fh, MPI_Offset offset, void *buf,
    int count, MPI_Datatype datatype, MPI_Status *status)
{
    int ret;
    double tm1, tm2;

    tm1 = darshan_wtime();
1062
1063
    ret = DARSHAN_MPI_CALL(PMPI_File_write_at)(fh, offset, buf,
        count, datatype, status);
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
    tm2 = darshan_wtime();
    CP_LOCK();
    CP_RECORD_MPI_WRITE(ret, fh, count, datatype, CP_INDEP_WRITES, tm1, tm2);
    CP_UNLOCK();
    return(ret);
}

int MPI_File_write_at_all(MPI_File fh, MPI_Offset offset, void * buf,
    int count, MPI_Datatype datatype, MPI_Status * status)
{
    int ret;
    double tm1, tm2;

    tm1 = darshan_wtime();
1078
1079
    ret = DARSHAN_MPI_CALL(PMPI_File_write_at_all)(fh, offset, buf,
        count, datatype, status);
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
    tm2 = darshan_wtime();
    CP_LOCK();
    CP_RECORD_MPI_WRITE(ret, fh, count, datatype, CP_COLL_WRITES, tm1, tm2);
    CP_UNLOCK();
    return(ret);
}

int MPI_File_write_all(MPI_File fh, void * buf, int count, MPI_Datatype datatype, MPI_Status *status)
{
    int ret;
    double tm1, tm2;

    tm1 = darshan_wtime();
1093
1094
    ret = DARSHAN_MPI_CALL(PMPI_File_write_all)(fh, buf, count,
        datatype, status);
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
    tm2 = darshan_wtime();
    CP_LOCK();
    CP_RECORD_MPI_WRITE(ret, fh, count, datatype, CP_COLL_WRITES, tm1, tm2);
    CP_UNLOCK();
    return(ret);
}

int MPI_File_write_shared(MPI_File fh, void * buf, int count, MPI_Datatype datatype, MPI_Status *status)
{
    int ret;
    double tm1, tm2;

    tm1 = darshan_wtime();
1108
1109
    ret = DARSHAN_MPI_CALL(PMPI_File_write_shared)(fh, buf, count,
        datatype, status);
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
    tm2 = darshan_wtime();
    CP_LOCK();
    CP_RECORD_MPI_WRITE(ret, fh, count, datatype, CP_INDEP_WRITES, tm1, tm2);
    CP_UNLOCK();
    return(ret);
}

int MPI_File_write_ordered(MPI_File fh, void * buf, int count, 
    MPI_Datatype datatype, MPI_Status * status)
{
    int ret;
    double tm1, tm2;

    tm1 = darshan_wtime();
1124
1125
    ret = DARSHAN_MPI_CALL(PMPI_File_write_ordered)(fh, buf, count,
         datatype, status);
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
    tm2 = darshan_wtime();
    CP_LOCK();
    CP_RECORD_MPI_WRITE(ret, fh, count, datatype, CP_COLL_WRITES, tm1, tm2);
    CP_UNLOCK();
    return(ret);
}

int MPI_File_write_at_all_begin(MPI_File fh, MPI_Offset offset, void * buf,
    int count, MPI_Datatype datatype)
{
    int ret;
    double tm1, tm2;

    tm1 = darshan_wtime();
1140
1141
    ret = DARSHAN_MPI_CALL(PMPI_File_write_at_all_begin)(fh, offset,
        buf, count, datatype);
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
    tm2 = darshan_wtime();
    CP_LOCK();
    CP_RECORD_MPI_WRITE(ret, fh, count, datatype, CP_SPLIT_WRITES, tm1, tm2);
    CP_UNLOCK();
    return(ret);
}

int MPI_File_write_all_begin(MPI_File fh, void * buf, int count, MPI_Datatype datatype)
{
    int ret;
    double tm1, tm2;

    tm1 = darshan_wtime();
1155
    ret = DARSHAN_MPI_CALL(PMPI_File_write_all_begin)(fh, buf, count, datatype);
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
    tm2 = darshan_wtime();
    CP_LOCK();
    CP_RECORD_MPI_WRITE(ret, fh, count, datatype, CP_SPLIT_WRITES, tm1, tm2);
    CP_UNLOCK();
    return(ret);
}

int MPI_File_write_ordered_begin(MPI_File fh, void * buf, int count, MPI_Datatype datatype)
{
    int ret;
    double tm1, tm2;

    tm1 = darshan_wtime();
1169
1170
    ret = DARSHAN_MPI_CALL(PMPI_File_write_ordered_begin)(fh, buf, count,
        datatype);
1171
1172
1173
1174
1175
1176
1177
1178
    tm2 = darshan_wtime();
    CP_LOCK();
    CP_RECORD_MPI_WRITE(ret, fh, count, datatype, CP_SPLIT_WRITES, tm1, tm2);
    CP_UNLOCK();
    return(ret);
}

int MPI_File_iwrite_at(MPI_File fh, MPI_Offset offset, void * buf,
1179
    int count, MPI_Datatype datatype, MPI_Request *request)
1180
1181
1182
1183
1184
{
    int ret;
    double tm1, tm2;

    tm1 = darshan_wtime();
1185
1186
    ret = DARSHAN_MPI_CALL(PMPI_File_iwrite_at)(fh, offset, buf,
        count, datatype, request);
1187
1188
1189
1190
1191
1192
1193
    tm2 = darshan_wtime();
    CP_LOCK();
    CP_RECORD_MPI_WRITE(ret, fh, count, datatype, CP_NB_WRITES, tm1, tm2);
    CP_UNLOCK();
    return(ret);
}

1194
int MPI_File_iwrite(MPI_File fh, void * buf, int count, MPI_Datatype datatype, MPI_Request * request)
1195
1196
1197
1198
1199
{
    int ret;
    double tm1, tm2;

    tm1 = darshan_wtime();
1200
    ret = DARSHAN_MPI_CALL(PMPI_File_iwrite)(fh, buf, count, datatype, request);
1201
1202
1203
1204
1205
1206
1207
1208
    tm2 = darshan_wtime();
    CP_LOCK();
    CP_RECORD_MPI_WRITE(ret, fh, count, datatype, CP_NB_WRITES, tm1, tm2);
    CP_UNLOCK();
    return(ret);
}

int MPI_File_iwrite_shared(MPI_File fh, void * buf, int count,
1209
    MPI_Datatype datatype, MPI_Request * request)
1210
1211
1212
1213
1214
{
    int ret;
    double tm1, tm2;

    tm1 = darshan_wtime();
1215
1216
    ret = DARSHAN_MPI_CALL(PMPI_File_iwrite_shared)(fh, buf, count,
        datatype, request);
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
    tm2 = darshan_wtime();
    CP_LOCK();
    CP_RECORD_MPI_WRITE(ret, fh, count, datatype, CP_NB_WRITES, tm1, tm2);
    CP_UNLOCK();
    return(ret);
}

static struct darshan_file_runtime* darshan_file_by_fh(MPI_File fh)
{
    struct darshan_file_runtime* tmp_file;
    uint64_t tmp_hash = 0;
    int hash_index;

    if(!darshan_global_job)
        return(NULL);

    /* if we have already condensed the data, then just hand the first file
     * back
     */
    if(darshan_global_job->flags & CP_FLAG_CONDENSED)
    {
        return(&darshan_global_job->file_runtime_array[0]);
    }

    /* check most recently used */
    if(darshan_global_job->darshan_mru_file && darshan_global_job->darshan_mru_file->fh == fh)
    {
        return(darshan_global_job->darshan_mru_file);
    }

1247
    tmp_hash = darshan_hash((void*)(&fh), sizeof(fh), 0);
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271

    /* search hash table */
    hash_index = tmp_hash & CP_HASH_MASK;
    tmp_file = darshan_global_job->fh_table[hash_index];
    while(tmp_file)
    {
        if(tmp_file->fh == fh)
        {
            darshan_global_job->darshan_mru_file = tmp_file;
            return(tmp_file);
        }
        tmp_file = tmp_file->fh_next;
    }

    return(NULL);
}

/* cp_log_reduction()
 *
 * Identify shared files and reduce them to one log entry
 *
 * returns 0 on success, -1 on failure
 */
static int cp_log_reduction(struct darshan_job_runtime* final_job, int rank, 
1272
    char* logfile_name, MPI_Offset* next_offset)
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
{
    /* TODO: these need to be allocated differently now, too big */
    uint64_t hash_array[CP_MAX_FILES] = {0};
    int mask_array[CP_MAX_FILES] = {0};
    int all_mask_array[CP_MAX_FILES] = {0};
    int ret;
    int i;
    int j;
    MPI_Op reduce_op;
    MPI_Datatype rtype;
    struct darshan_file* tmp_array = NULL;
    int shared_count = 0;

    /* register a reduction operation */
1287
    ret = DARSHAN_MPI_CALL(PMPI_Op_create)(darshan_file_reduce, 1, &reduce_op); 
1288
1289
1290
1291
1292
1293
1294
1295
    if(ret != 0)
    {
        return(-1);
    }

    /* construct a datatype for a file record.  This is serving no purpose
     * except to make sure we can do a reduction on proper boundaries
     */
1296
1297
1298
    DARSHAN_MPI_CALL(PMPI_Type_contiguous)(sizeof(struct darshan_file),
        MPI_BYTE, &rtype); 
    DARSHAN_MPI_CALL(PMPI_Type_commit)(&rtype); 
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309

    /* gather list of files that root process has opened */
    if(rank == 0)
    {
        for(i=0; i<final_job->file_count; i++)
        {
            hash_array[i] = final_job->file_array[i].hash;
        }
    }

    /* broadcast list of files to all other processes */
1310
1311
    ret = DARSHAN_MPI_CALL(PMPI_Bcast)(hash_array,
        (CP_MAX_FILES * sizeof(uint64_t)), 
1312
1313
1314
        MPI_BYTE, 0, MPI_COMM_WORLD);
    if(ret != 0)
    {
1315
        DARSHAN_MPI_CALL(PMPI_Op_free)(&reduce_op);
1316
        DARSHAN_MPI_CALL(PMPI_Type_free)(&rtype);
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
        return(-1);
    }

    /* everyone looks to see if they have also opened that same file */
    for(i=0; (i<CP_MAX_FILES && hash_array[i] != 0); i++)
    {
        for(j=0; j<final_job->file_count; j++)
        {
            if(hash_array[i] && final_job->file_array[j].hash == hash_array[i])
            {
                /* we opened that file too */
                mask_array[i] = 1;
                break;
            }
        }
    }

    /* now allreduce so that everyone agrees on which files are shared */
1335
1336
    ret = DARSHAN_MPI_CALL(PMPI_Allreduce)(mask_array, all_mask_array,
        CP_MAX_FILES, MPI_INT, MPI_LAND, MPI_COMM_WORLD);
1337
1338
    if(ret != 0)
    {
1339
        DARSHAN_MPI_CALL(PMPI_Op_free)(&reduce_op);
1340
        DARSHAN_MPI_CALL(PMPI_Type_free)(&rtype);
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
        return(-1);
    }

    /* walk through mask array counting entries and marking corresponding
     * files with a rank of -1
     */
    for(i=0; i<CP_MAX_FILES; i++)
    {
        if(all_mask_array[i])
        {
            shared_count++;
            for(j=0; j<final_job->file_count; j++)
            {
                if(final_job->file_array[j].hash == hash_array[i])
                {
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373
1374
1375
1376
1377
1378
1379
1380

                    /*
                     * Initialize fastest/slowest info prior
                     * to the reduction.
                     */
                    final_job->file_array[j].counters[CP_FASTEST_RANK] =
                      final_job->file_array[j].rank;
                    final_job->file_array[j].counters[CP_FASTEST_RANK_BYTES] =
                      final_job->file_array[j].counters[CP_BYTES_READ] +
                      final_job->file_array[j].counters[CP_BYTES_WRITTEN];
                    final_job->file_array[j].fcounters[CP_F_FASTEST_RANK_TIME] =
                      final_job->file_array[j].fcounters[CP_F_POSIX_META_TIME] +
                      final_job->file_array[j].fcounters[CP_F_POSIX_READ_TIME] +
                      final_job->file_array[j].fcounters[CP_F_POSIX_WRITE_TIME];

                    final_job->file_array[j].counters[CP_SLOWEST_RANK] =
                      final_job->file_array[j].rank;
                    final_job->file_array[j].counters[CP_SLOWEST_RANK_BYTES] =
                      final_job->file_array[j].counters[CP_BYTES_READ] +
                      final_job->file_array[j].counters[CP_BYTES_WRITTEN];
                    final_job->file_array[j].fcounters[CP_F_SLOWEST_RANK_TIME] =
                      final_job->file_array[j].fcounters[CP_F_POSIX_META_TIME] +
                      final_job->file_array[j].fcounters[CP_F_POSIX_READ_TIME] +
                      final_job->file_array[j].fcounters[CP_F_POSIX_WRITE_TIME];

1381
1382
1383
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396
                    final_job->file_array[j].rank = -1;
                    break;
                }
            }
        }
    }

    if(shared_count)
    {
        if(rank == 0)
        {
            /* root proc needs to allocate memory to store reduction */
            tmp_array = malloc(shared_count*sizeof(struct darshan_file));
            if(!tmp_array)
            {
                /* TODO: think more about how to handle errors like this */
1397
                DARSHAN_MPI_CALL(PMPI_Op_free)(&reduce_op);
1398
                DARSHAN_MPI_CALL(PMPI_Type_free)(&rtype);
1399
1400
1401
1402
1403
1404
1405
1406
1407
1408
1409
                return(-1);
            }
        }

        /* sort the array of files descending by rank so that we get all of the 
         * shared files (marked by rank -1) in a contiguous portion at end 
         * of the array
         */
        qsort(final_job->file_array, final_job->file_count, 
            sizeof(struct darshan_file), file_compare);

1410
        ret = DARSHAN_MPI_CALL(PMPI_Reduce)(
1411
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            &final_job->file_array[final_job->file_count-shared_count], 
            tmp_array, shared_count, rtype, reduce_op, 0, MPI_COMM_WORLD);
        if(ret != 0)
        {
1415
            DARSHAN_MPI_CALL(PMPI_Op_free)(&reduce_op);
1416
            DARSHAN_MPI_CALL(PMPI_Type_free)(&rtype);
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            return(-1);
        }

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        ret = darshan_file_variance(
            &final_job->file_array[final_job->file_count-shared_count],
            tmp_array, shared_count, rank);
        if (ret)
        {
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            DARSHAN_MPI_CALL(PMPI_Op_free)(&reduce_op);
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            DARSHAN_MPI_CALL(PMPI_Type_free)(&rtype);
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            return(-1);
        }

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        if(rank == 0)
        {
            /* root replaces local files with shared ones */
            memcpy(&final_job->file_array[final_job->file_count-shared_count],
                tmp_array, shared_count*sizeof(struct darshan_file));
            free(tmp_array);
            tmp_array = NULL;
        }
        else
        {
            /* everyone else simply discards those file records */
            final_job->file_count -= shared_count;
        }
    }
    
1445
    DARSHAN_MPI_CALL(PMPI_Op_free)(&reduce_op);
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    DARSHAN_MPI_CALL(PMPI_Type_free)(&rtype);
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    return(0);
}

/* TODO: should we use more of the CP macros here? */
static void darshan_file_reduce(void* infile_v, 
    void* inoutfile_v, int *len, 
    MPI_Datatype *datatype)
{
    struct darshan_file tmp_file;
    struct darshan_file* infile = infile_v;
    struct darshan_file* inoutfile = inoutfile_v;
    struct darshan_file_runtime tmp_runtime;
    int i;
    int j;
    int k;

    for(i=0; i<*len; i++)
    {
        memset(&tmp_file, 0, sizeof(tmp_file));

        tmp_file.hash = infile->hash;
        tmp_file.rank = -1; /* indicates shared across all procs */

        /* sum */
        for(j=CP_INDEP_OPENS; j<=CP_VIEWS; j++)
        {
            tmp_file.counters[j] = infile->counters[j] + 
                inoutfile->counters[j];
        }

        /* pick one */
        tmp_file.counters[CP_MODE] = infile->counters[CP_MODE];


        /* sum */
        for(j=CP_BYTES_READ; j<=CP_BYTES_WRITTEN; j++)
        {
            tmp_file.counters[j] = infile->counters[j] + 
                inoutfile->counters[j];
        }

        /* max */
        for(j=CP_MAX_BYTE_READ; j<=CP_MAX_BYTE_WRITTEN; j++)
        {
            tmp_file.counters[j] = (
                (infile->counters[j] > inoutfile->counters[j]) ? 
                infile->counters[j] :
                inoutfile->counters[j]);
        }

        /* sum */
        for(j=CP_CONSEC_READS; j<=CP_MEM_NOT_ALIGNED; j++)
        {
            tmp_file.counters[j] = infile->counters[j] + 
                inoutfile->counters[j];
        }

        /* pick one */
        tmp_file.counters[CP_MEM_ALIGNMENT] = infile->counters[CP_MEM_ALIGNMENT];
        /* sum */
        for(j=CP_FILE_NOT_ALIGNED; j<=CP_FILE_NOT_ALIGNED; j++)
        {
            tmp_file.counters[j] = infile->counters[j] + 
                inoutfile->counters[j];
        }

        /* pick one */
        tmp_file.counters[CP_FILE_ALIGNMENT] = infile->counters[CP_FILE_ALIGNMENT];
        
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        /* skip CP_MAX_*_TIME_SIZE; handled in floating point section */

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        /* sum */
        for(j=CP_SIZE_READ_0_100; j<=CP_EXTENT_WRITE_1G_PLUS; j++)
        {
            tmp_file.counters[j] = infile->counters[j] + 
                inoutfile->counters[j];
        }

        /* pick the 4 most common strides out of the 8 we have to chose from */

        /* first collapse any duplicates */
        for(j=CP_STRIDE1_STRIDE; j<=CP_STRIDE4_STRIDE; j++)
        {
            for(k=CP_STRIDE1_STRIDE; k<=CP_STRIDE4_STRIDE; k++)
            {
                if(infile->counters[j] == inoutfile->counters[k])
                {
                    infile->counters[j+4] += inoutfile->counters[k+4];
                    inoutfile->counters[k] = 0;
                    inoutfile->counters[k+4] = 0;
                }
            }
        }

        /* placeholder so we can re-use macros */
        tmp_runtime.log_file = &tmp_file;
        /* first set */
        for(j=CP_STRIDE1_STRIDE; j<=CP_STRIDE4_STRIDE; j++)
        {
            CP_COUNTER_INC(&tmp_runtime, infile->counters[j],
                infile->counters[j+4], 1, CP_STRIDE1_STRIDE, CP_STRIDE1_COUNT);
        }
        /* second set */
        for(j=CP_STRIDE1_STRIDE; j<=CP_STRIDE4_STRIDE; j++)
        {
            CP_COUNTER_INC(&tmp_runtime, inoutfile->counters[j],
                inoutfile->counters[j+4], 1, CP_STRIDE1_STRIDE, CP_STRIDE1_COUNT);
        }

        /* TODO: subroutine so we don't duplicate so much */
        /* same for access counts */

        /* first collapse any duplicates */
        for(j=CP_ACCESS1_ACCESS; j<=CP_ACCESS4_ACCESS; j++)
        {
            for(k=CP_ACCESS1_ACCESS; k<=CP_ACCESS4_ACCESS; k++)
            {
                if(infile->counters[j] == inoutfile->counters[k])
                {
                    infile->counters[j+4] += inoutfile->counters[k+4];
                    inoutfile->counters[k] = 0;
                    inoutfile->counters[k+4] = 0;
                }
            }
        }

        /* placeholder so we can re-use macros */
        tmp_runtime.log_file = &tmp_file;
        /* first set */
        for(j=CP_ACCESS1_ACCESS; j<=CP_ACCESS4_ACCESS; j++)
        {
            CP_COUNTER_INC(&tmp_runtime, infile->counters[j],
                infile->counters[j+4], 1, CP_ACCESS1_ACCESS, CP_ACCESS1_COUNT);
        }
        /* second set */
        for(j=CP_ACCESS1_ACCESS; j<=CP_ACCESS4_ACCESS; j++)
        {
            CP_COUNTER_INC(&tmp_runtime, inoutfile->counters[j],
                inoutfile->counters[j+4], 1, CP_ACCESS1_ACCESS, CP_ACCESS1_COUNT);
        }

        /* min */
        for(j=CP_F_OPEN_TIMESTAMP; j<=CP_F_WRITE_START_TIMESTAMP; j++)
        {
            if(infile->fcounters[j] > inoutfile->fcounters[j])
                tmp_file.fcounters[j] = inoutfile->fcounters[j];
            else
                tmp_file.fcounters[j] = infile->fcounters[j];
        }

        /* max */
        for(j=CP_F_CLOSE_TIMESTAMP; j<=CP_F_WRITE_END_TIMESTAMP; j++)
        {
            if(infile->fcounters[j] > inoutfile->fcounters[j])
                tmp_file.fcounters[j] = infile->fcounters[j];
            else
                tmp_file.fcounters[j] = inoutfile->fcounters[j];
        }

        /* sum */
        for(j=CP_F_POSIX_READ_TIME; j<=CP_F_MPI_WRITE_TIME; j++)
        {
            tmp_file.fcounters[j] = infile->fcounters[j] + 
                inoutfile->fcounters[j];
        }

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        /* max (special case) */
        if(infile->fcounters[CP_F_MAX_WRITE_TIME] > 
            inoutfile->fcounters[CP_F_MAX_WRITE_TIME])
        {
            tmp_file.fcounters[CP_F_MAX_WRITE_TIME] = 
                infile->fcounters[CP_F_MAX_WRITE_TIME];
            tmp_file.counters[CP_MAX_WRITE_TIME_SIZE] = 
                infile->counters[CP_MAX_WRITE_TIME_SIZE];
        }
        else
        {
            tmp_file.fcounters[CP_F_MAX_WRITE_TIME] = 
                inoutfile->fcounters[CP_F_MAX_WRITE_TIME];
            tmp_file.counters[CP_MAX_WRITE_TIME_SIZE] = 
                inoutfile->counters[CP_MAX_WRITE_TIME_SIZE];
        }

        if(infile->fcounters[CP_F_MAX_READ_TIME] > 
            inoutfile->fcounters[CP_F_MAX_READ_TIME])
        {
            tmp_file.fcounters[CP_F_MAX_READ_TIME] = 
                infile->fcounters[CP_F_MAX_READ_TIME];
            tmp_file.counters[CP_MAX_READ_TIME_SIZE] = 
                infile->counters[CP_MAX_READ_TIME_SIZE];
        }
        else
        {
            tmp_file.fcounters[CP_F_MAX_READ_TIME] = 
                inoutfile->fcounters[CP_F_MAX_READ_TIME];
            tmp_file.counters[CP_MAX_READ_TIME_SIZE] = 
                inoutfile->counters[CP_MAX_READ_TIME_SIZE];
        }

1647
        /* min */
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1649
        if(infile->fcounters[CP_F_FASTEST_RANK_TIME] <
           inoutfile->fcounters[CP_F_FASTEST_RANK_TIME])
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        {
            tmp_file.counters[CP_FASTEST_RANK] =
                infile->counters[CP_FASTEST_RANK];
            tmp_file.counters[CP_FASTEST_RANK_BYTES] = 
                infile->counters[CP_FASTEST_RANK_BYTES];
            tmp_file.fcounters[CP_F_FASTEST_RANK_TIME] =
                infile->fcounters[CP_F_FASTEST_RANK_TIME];
        }
        else
        {
            tmp_file.counters[CP_FASTEST_RANK] =
                inoutfile->counters[CP_FASTEST_RANK];
            tmp_file.counters[CP_FASTEST_RANK_BYTES] =
                inoutfile->counters[CP_FASTEST_RANK_BYTES];
            tmp_file.fcounters[CP_F_FASTEST_RANK_TIME] = 
                inoutfile->fcounters[CP_F_FASTEST_RANK_TIME];
        }

        /* max */
        if(infile->fcounters[CP_F_SLOWEST_RANK_TIME] >
           inoutfile->fcounters[CP_F_SLOWEST_RANK_TIME])
        {
            tmp_file.counters[CP_SLOWEST_RANK] =
                infile->counters[CP_SLOWEST_RANK];
            tmp_file.counters[CP_SLOWEST_RANK_BYTES] =
                infile->counters[CP_SLOWEST_RANK_BYTES];
            tmp_file.fcounters[CP_F_SLOWEST_RANK_TIME] = 
                infile->fcounters[CP_F_SLOWEST_RANK_TIME];
        }
        else
        {
            tmp_file.counters[CP_SLOWEST_RANK] = 
                inoutfile->counters[CP_SLOWEST_RANK];
            tmp_file.counters[CP_SLOWEST_RANK_BYTES] = 
                inoutfile->counters[CP_SLOWEST_RANK_BYTES];
            tmp_file.fcounters[CP_F_SLOWEST_RANK_TIME] = 
                inoutfile->fcounters[CP_F_SLOWEST_RANK_TIME];
        }

1689
        /* pick one device id and file size */
1690
        tmp_file.counters[CP_DEVICE] = infile->counters[CP_DEVICE];
1691
        tmp_file.counters[CP_SIZE_AT_OPEN] = infile->counters[CP_SIZE_AT_OPEN];
1692

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1700
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1707
        /* pick one name suffix */
        strcpy(tmp_file.name_suffix, infile->name_suffix);

        *inoutfile = tmp_file;
        inoutfile++;
        infile++;
    }
    
    return;
}
/* cp_log_construct_indices()
 *
 * create memory datatypes to describe the log data to write out
 */
static void cp_log_construct_indices(struct darshan_job_runtime* final_job, 
1708
1709
    int rank, int* inout_count, int* lengths, void** pointers, char*
    trailing_data)
1710
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