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259 lines
8.4 KiB
C
259 lines
8.4 KiB
C
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
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* Copyright by The HDF Group. *
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* Copyright by the Board of Trustees of the University of Illinois. *
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* All rights reserved. *
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* *
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* This file is part of HDF5. The full HDF5 copyright notice, including *
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* terms governing use, modification, and redistribution, is contained in *
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* the files COPYING and Copyright.html. COPYING can be found at the root *
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* of the source code distribution tree; Copyright.html can be found at the *
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* root level of an installed copy of the electronic HDF5 document set and *
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* is linked from the top-level documents page. It can also be found at *
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* http://hdfgroup.org/HDF5/doc/Copyright.html. If you do not have *
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* access to either file, you may request a copy from help@hdfgroup.org. *
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* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
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/*
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* Purpose:
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*
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* This is a module of useful timing functions for performance testing.
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include "hdf5.h"
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#ifdef H5_HAVE_PARALLEL
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#include <mpi.h>
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#include "pio_perf.h"
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/*
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* The number to divide the tv_usec field with to get a nice decimal to add to
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* the number of seconds.
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*/
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#define MICROSECOND 1000000.0
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/* global variables */
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pio_time *timer_g; /* timer: global for stub functions */
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/*
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* Function: sub_time
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* Purpose: Struct two time values, and return the difference, in microseconds
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*
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* Note that the function assumes that a > b
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* Programmer: Leon Arber, 1/27/06
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*/
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static double sub_time(struct timeval* a, struct timeval* b)
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{
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return (((double)a->tv_sec +
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((double)a->tv_usec) / MICROSECOND) -
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((double)b->tv_sec +
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((double)b->tv_usec) / MICROSECOND));
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}
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/*
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* Function: pio_time_new
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* Purpose: Build us a brand, spankin', new performance time object.
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* The object is a black box to the user. They just tell us
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* what type of timer they want (MPI_TIMER for MPI_Wtime or
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* SYS_TIMER for system time).
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* Return: Pointer to pio_time object
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* Programmer: Bill Wendling, 01. October 2001
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* Modifications:
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*/
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pio_time *
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pio_time_new(clock_type type)
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{
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pio_time *pt = (pio_time *)calloc(1, sizeof(struct pio_time_));
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/* set global timer variable */
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timer_g = pt;
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pt->type = type;
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return pt;
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}
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/*
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* Function: pio_time_destroy
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* Purpose: Remove the memory allocated for the pio_time object. Only
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* need to call on a pointer allocated with the ``pio_time_new''
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* function.
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* Return: Nothing
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* Programmer: Bill Wendling, 01. October 2001
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* Modifications:
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*/
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void
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pio_time_destroy(pio_time *pt)
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{
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HDfree(pt);
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/* reset the global timer pointer too. */
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timer_g = NULL;
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}
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/*
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* Function: set_timer_type
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* Purpose: Set the type of the timer to either MPI_TIMER or SYS_TIMER.
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* This really only needs to be called if you didn't construct a
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* timer with the pio_timer_new function (shame!).
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* Return: Nothing
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* Programmer: Bill Wendling, 04. October 2001
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* Modifications:
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*/
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void
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set_timer_type(pio_time *pt, clock_type type)
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{
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pt->type = type;
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}
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/*
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* Function: get_timer_type
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* Purpose: Get the type of the timer.
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* Return: MPI_TIMER or SYS_TIMER.
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* Programmer: Bill Wendling, 04. October 2001
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* Modifications:
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*/
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clock_type
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get_timer_type(pio_time *pt)
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{
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return pt->type;
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}
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/*
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* Function: set_time
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* Purpose: Set the time in a ``pio_time'' object.
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* Return: Pointer to the passed in ``pio_time'' object.
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* Programmer: Bill Wendling, 01. October 2001
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* Modifications:
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*/
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pio_time *
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set_time(pio_time *pt, timer_type t, int start_stop)
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{
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if (pt) {
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if (pt->type == MPI_TIMER) {
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if (start_stop == TSTART) {
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pt->mpi_timer[t] = MPI_Wtime();
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/* When we start the timer for HDF5_FINE_WRITE_FIXED_DIMS or HDF5_FINE_READ_FIXED_DIMS
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* we compute the time it took to only open the file */
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if(t == HDF5_FINE_WRITE_FIXED_DIMS)
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pt->total_time[HDF5_FILE_WRITE_OPEN] += pt->mpi_timer[t] - pt->mpi_timer[HDF5_GROSS_WRITE_FIXED_DIMS];
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else if(t == HDF5_FINE_READ_FIXED_DIMS)
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pt->total_time[HDF5_FILE_READ_OPEN] += pt->mpi_timer[t] - pt->mpi_timer[HDF5_GROSS_READ_FIXED_DIMS];
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} else {
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pt->total_time[t] += MPI_Wtime() - pt->mpi_timer[t];
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pt->mpi_timer[t] = MPI_Wtime();
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/* When we stop the timer for HDF5_GROSS_WRITE_FIXED_DIMS or HDF5_GROSS_READ_FIXED_DIMS
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* we compute the time it took to close the file after the last read/write finished */
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if(t == HDF5_GROSS_WRITE_FIXED_DIMS)
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pt->total_time[HDF5_FILE_WRITE_CLOSE] += pt->mpi_timer[t] - pt->mpi_timer[HDF5_FINE_WRITE_FIXED_DIMS];
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else if(t == HDF5_GROSS_READ_FIXED_DIMS)
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pt->total_time[HDF5_FILE_READ_CLOSE] += pt->mpi_timer[t] - pt->mpi_timer[HDF5_FINE_READ_FIXED_DIMS];
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}
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} else {
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if (start_stop == TSTART) {
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HDgettimeofday(&pt->sys_timer[t], NULL);
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/* When we start the timer for HDF5_FINE_WRITE_FIXED_DIMS or HDF5_FINE_READ_FIXED_DIMS
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* we compute the time it took to only open the file */
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if(t == HDF5_FINE_WRITE_FIXED_DIMS)
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pt->total_time[HDF5_FILE_WRITE_OPEN] += sub_time(&(pt->sys_timer[t]), &(pt->sys_timer[HDF5_GROSS_WRITE_FIXED_DIMS]));
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else if(t == HDF5_FINE_READ_FIXED_DIMS)
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pt->total_time[HDF5_FILE_READ_OPEN] += sub_time(&(pt->sys_timer[t]), &(pt->sys_timer[HDF5_GROSS_READ_FIXED_DIMS]));
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} else {
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struct timeval sys_t;
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HDgettimeofday(&sys_t, NULL);
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pt->total_time[t] += sub_time(&sys_t, &(pt->sys_timer[t]));
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/* ((double)sys_t.tv_sec +
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((double)sys_t.tv_usec) / MICROSECOND) -
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((double)pt->sys_timer[t].tv_sec +
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((double)pt->sys_timer[t].tv_usec) / MICROSECOND);*/
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/* When we stop the timer for HDF5_GROSS_WRITE_FIXED_DIMS or HDF5_GROSS_READ_FIXED_DIMS
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* we compute the time it took to close the file after the last read/write finished */
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if(t == HDF5_GROSS_WRITE_FIXED_DIMS)
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pt->total_time[HDF5_FILE_WRITE_CLOSE] += sub_time(&(pt->sys_timer[t]), &(pt->sys_timer[HDF5_FINE_WRITE_FIXED_DIMS]));
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else if(t == HDF5_GROSS_READ_FIXED_DIMS)
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pt->total_time[HDF5_FILE_READ_CLOSE] += sub_time(&(pt->sys_timer[t]), &(pt->sys_timer[HDF5_FINE_READ_FIXED_DIMS]));
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}
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}
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if (pio_debug_level >= 4) {
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const char *msg;
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int myrank;
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MPI_Comm_rank(pio_comm_g, &myrank);
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switch (t) {
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case HDF5_FILE_OPENCLOSE:
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msg = "File Open/Close";
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break;
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case HDF5_DATASET_CREATE:
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msg = "Dataset Create";
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break;
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case HDF5_MPI_WRITE:
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msg = "MPI Write";
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break;
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case HDF5_MPI_READ:
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msg = "MPI Read";
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break;
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case HDF5_FINE_WRITE_FIXED_DIMS:
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msg = "Fine Write";
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break;
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case HDF5_FINE_READ_FIXED_DIMS:
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msg = "Fine Read";
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break;
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case HDF5_GROSS_WRITE_FIXED_DIMS:
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msg = "Gross Write";
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break;
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case HDF5_GROSS_READ_FIXED_DIMS:
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msg = "Gross Read";
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break;
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case HDF5_RAW_WRITE_FIXED_DIMS:
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msg = "Raw Write";
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break;
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case HDF5_RAW_READ_FIXED_DIMS:
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msg = "Raw Read";
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break;
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default:
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msg = "Unknown Timer";
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break;
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}
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fprintf(output, " Proc %d: %s %s: %.2f\n", myrank, msg,
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(start_stop == TSTART ? "Start" : "Stop"),
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pt->total_time[t]);
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}
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}
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return pt;
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}
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/*
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* Function: get_time
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* Purpose: Get the time from a ``pio_time'' object.
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* Return: The number of seconds as a DOUBLE.
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* Programmer: Bill Wendling, 01. October 2001
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* Modifications:
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*/
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double
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get_time(pio_time *pt, timer_type t)
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{
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return pt->total_time[t];
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}
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#endif /* H5_HAVE_PARALLEL */
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#ifdef STANDALONE
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#include "pio_standalone.c"
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#endif
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