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/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
* Copyright by The HDF Group. *
* All rights reserved. *
* *
* This file is part of HDF5. The full HDF5 copyright notice, including *
* terms governing use, modification, and redistribution, is contained in *
* the COPYING file, which can be found at the root of the source code *
* distribution tree, or in https://www.hdfgroup.org/licenses. *
* If you do not have access to either file, you may request a copy from *
* help@hdfgroup.org. *
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
/*
* Programmer: Robb Matzke
* Thursday, March 12, 1998
*/
/* See H5private.h for how to include headers */
#include "hdf5.h"
#include "H5private.h"
#define RAW_FILE_NAME "iopipe.raw"
#define HDF5_FILE_NAME "iopipe.h5"
#define HEADING "%-16s"
#define PROGRESS '='
#if 0
/* Normal testing */
#define REQUEST_SIZE_X 4579
#define REQUEST_SIZE_Y 4579
#define NREAD_REQUESTS 45
#define NWRITE_REQUESTS 45
#else
/* Speedy testing */
#define REQUEST_SIZE_X 1000
#define REQUEST_SIZE_Y 1000
#define NREAD_REQUESTS 45
#define NWRITE_REQUESTS 45
#endif
/*-------------------------------------------------------------------------
* Function: print_stats
*
* Purpose: Prints statistics
*
* Return: void
*
* Programmer: Robb Matzke
* Thursday, March 12, 1998
*
*-------------------------------------------------------------------------
*/
static void
print_stats(const char *prefix,
#ifdef H5_HAVE_GETRUSAGE
struct rusage *r_start, struct rusage *r_stop,
#endif /* H5_HAVE_GETRUSAGE */
double t_start, double t_stop, size_t nbytes)
{
double e_time;
char bw[16];
#ifdef H5_HAVE_GETRUSAGE
double u_time, s_time;
u_time = ((double)(r_stop->ru_utime.tv_sec) + (double)(r_stop->ru_utime.tv_usec) / 1000000.0) -
((double)(r_start->ru_utime.tv_sec) + (double)(r_start->ru_utime.tv_usec) / 1000000.0);
s_time = ((double)(r_stop->ru_stime.tv_sec) + (double)(r_stop->ru_stime.tv_usec) / 1000000.0) -
((double)(r_start->ru_stime.tv_sec) + (double)(r_start->ru_stime.tv_usec) / 1000000.0);
#endif
e_time = t_stop - t_start;
H5_bandwidth(bw, sizeof(bw), (double)nbytes, e_time);
#ifdef H5_HAVE_GETRUSAGE
HDprintf(HEADING "%1.2fuser %1.2fsystem %1.2felapsed %s\n", prefix, u_time, s_time, e_time, bw);
#else
HDprintf(HEADING "%1.2felapsed %s\n", prefix, e_time, bw);
#endif
}
/*-------------------------------------------------------------------------
* Function: synchronize
*
* Purpose:
*
* Return: void
*
* Programmer: Robb Matzke
* Thursday, March 12, 1998
*
*-------------------------------------------------------------------------
*/
static void
synchronize(void)
{
#if defined(H5_HAVE_WIN32_API) && !defined(__CYGWIN__)
_flushall();
#else
int H5_ATTR_NDEBUG_UNUSED status;
status = HDsystem("sync");
HDassert(status >= 0);
status = HDsystem("df >/dev/null");
HDassert(status >= 0);
#endif
}
/*-------------------------------------------------------------------------
* Function: main
*
* Purpose:
*
* Return: Success:
*
* Failure:
*
* Programmer: Robb Matzke
* Thursday, March 12, 1998
*
*-------------------------------------------------------------------------
*/
int
main(void)
{
hsize_t size[2] = {REQUEST_SIZE_X, REQUEST_SIZE_Y};
unsigned nread = NREAD_REQUESTS, nwrite = NWRITE_REQUESTS;
unsigned char *the_data = NULL;
hid_t file, dset, file_space = H5I_INVALID_HID;
#ifdef H5_HAVE_GETRUSAGE
struct rusage r_start, r_stop;
#endif
double t_start, t_stop;
int fd;
unsigned u;
herr_t H5_ATTR_NDEBUG_UNUSED status;
hssize_t H5_ATTR_NDEBUG_UNUSED n;
off_t H5_ATTR_NDEBUG_UNUSED offset;
hsize_t start[2];
hsize_t count[2];
/*
* The extra cast in the following statement is a bug workaround for the
* Win32 version 5.0 compiler.
* 1998-11-06 ptl
*/
HDprintf("I/O request size is %1.1fMB\n", (double)(hssize_t)(size[0] * size[1]) / 1024.0 * 1024.0);
/* Open the files */
file = H5Fcreate(HDF5_FILE_NAME, H5F_ACC_TRUNC, H5P_DEFAULT, H5P_DEFAULT);
HDassert(file >= 0);
fd = HDopen(RAW_FILE_NAME, O_RDWR | O_CREAT | O_TRUNC, 0666);
HDassert(fd >= 0);
/* Create the dataset */
file_space = H5Screate_simple(2, size, size);
HDassert(file_space >= 0);
dset = H5Dcreate2(file, "dset", H5T_NATIVE_UCHAR, file_space, H5P_DEFAULT, H5P_DEFAULT, H5P_DEFAULT);
HDassert(dset >= 0);
the_data = (unsigned char *)HDmalloc((size_t)(size[0] * size[1]));
/* initial fill for lazy malloc */
HDmemset(the_data, 0xAA, (size_t)(size[0] * size[1]));
/* Fill raw */
synchronize();
#ifdef H5_HAVE_GETRUSAGE
HDgetrusage(RUSAGE_SELF, &r_start);
#endif
t_start = H5_get_time();
HDfprintf(stderr, HEADING, "fill raw");
for (u = 0; u < nwrite; u++) {
HDputc(PROGRESS, stderr);
HDfflush(stderr);
HDmemset(the_data, 0xAA, (size_t)(size[0] * size[1]));
}
#ifdef H5_HAVE_GETRUSAGE
HDgetrusage(RUSAGE_SELF, &r_stop);
#endif
t_stop = H5_get_time();
HDputc('\n', stderr);
print_stats("fill raw",
#ifdef H5_HAVE_GETRUSAGE
&r_start, &r_stop,
#endif /* H5_HAVE_GETRUSAGE */
t_start, t_stop, (size_t)(nread * size[0] * size[1]));
/* Fill hdf5 */
synchronize();
#ifdef H5_HAVE_GETRUSAGE
HDgetrusage(RUSAGE_SELF, &r_start);
#endif
t_start = H5_get_time();
HDfprintf(stderr, HEADING, "fill hdf5");
for (u = 0; u < nread; u++) {
HDputc(PROGRESS, stderr);
HDfflush(stderr);
status = H5Dread(dset, H5T_NATIVE_UCHAR, file_space, file_space, H5P_DEFAULT, the_data);
HDassert(status >= 0);
}
#ifdef H5_HAVE_GETRUSAGE
HDgetrusage(RUSAGE_SELF, &r_stop);
#endif
t_stop = H5_get_time();
HDputc('\n', stderr);
print_stats("fill hdf5",
#ifdef H5_HAVE_GETRUSAGE
&r_start, &r_stop,
#endif /* H5_HAVE_GETRUSAGE */
t_start, t_stop, (size_t)(nread * size[0] * size[1]));
/* Write the raw dataset */
synchronize();
#ifdef H5_HAVE_GETRUSAGE
HDgetrusage(RUSAGE_SELF, &r_start);
#endif
t_start = H5_get_time();
HDfprintf(stderr, HEADING, "out raw");
for (u = 0; u < nwrite; u++) {
HDputc(PROGRESS, stderr);
HDfflush(stderr);
offset = HDlseek(fd, (off_t)0, SEEK_SET);
HDassert(0 == offset);
n = HDwrite(fd, the_data, (size_t)(size[0] * size[1]));
HDassert(n >= 0 && (size_t)n == (size[0] * size[1]));
}
#ifdef H5_HAVE_GETRUSAGE
HDgetrusage(RUSAGE_SELF, &r_stop);
#endif
t_stop = H5_get_time();
HDputc('\n', stderr);
print_stats("out raw",
#ifdef H5_HAVE_GETRUSAGE
&r_start, &r_stop,
#endif /* H5_HAVE_GETRUSAGE */
t_start, t_stop, (size_t)(nread * size[0] * size[1]));
/* Write the hdf5 dataset */
synchronize();
#ifdef H5_HAVE_GETRUSAGE
HDgetrusage(RUSAGE_SELF, &r_start);
#endif
t_start = H5_get_time();
HDfprintf(stderr, HEADING, "out hdf5");
for (u = 0; u < nwrite; u++) {
HDputc(PROGRESS, stderr);
HDfflush(stderr);
status = H5Dwrite(dset, H5T_NATIVE_UCHAR, H5S_ALL, H5S_ALL, H5P_DEFAULT, the_data);
HDassert(status >= 0);
}
#ifdef H5_HAVE_GETRUSAGE
HDgetrusage(RUSAGE_SELF, &r_stop);
#endif
t_stop = H5_get_time();
HDputc('\n', stderr);
print_stats("out hdf5",
#ifdef H5_HAVE_GETRUSAGE
&r_start, &r_stop,
#endif /* H5_HAVE_GETRUSAGE */
t_start, t_stop, (size_t)(nread * size[0] * size[1]));
/* Read the raw dataset */
synchronize();
#ifdef H5_HAVE_GETRUSAGE
HDgetrusage(RUSAGE_SELF, &r_start);
#endif
t_start = H5_get_time();
HDfprintf(stderr, HEADING, "in raw");
for (u = 0; u < nread; u++) {
HDputc(PROGRESS, stderr);
HDfflush(stderr);
offset = HDlseek(fd, (off_t)0, SEEK_SET);
HDassert(0 == offset);
n = HDread(fd, the_data, (size_t)(size[0] * size[1]));
HDassert(n >= 0 && (size_t)n == (size[0] * size[1]));
}
#ifdef H5_HAVE_GETRUSAGE
HDgetrusage(RUSAGE_SELF, &r_stop);
#endif
t_stop = H5_get_time();
HDputc('\n', stderr);
print_stats("in raw",
#ifdef H5_HAVE_GETRUSAGE
&r_start, &r_stop,
#endif /* H5_HAVE_GETRUSAGE */
t_start, t_stop, (size_t)(nread * size[0] * size[1]));
/* Read the hdf5 dataset */
synchronize();
#ifdef H5_HAVE_GETRUSAGE
HDgetrusage(RUSAGE_SELF, &r_start);
#endif
t_start = H5_get_time();
HDfprintf(stderr, HEADING, "in hdf5");
for (u = 0; u < nread; u++) {
HDputc(PROGRESS, stderr);
HDfflush(stderr);
status = H5Dread(dset, H5T_NATIVE_UCHAR, file_space, file_space, H5P_DEFAULT, the_data);
HDassert(status >= 0);
}
#ifdef H5_HAVE_GETRUSAGE
HDgetrusage(RUSAGE_SELF, &r_stop);
#endif
t_stop = H5_get_time();
HDputc('\n', stderr);
print_stats("in hdf5",
#ifdef H5_HAVE_GETRUSAGE
&r_start, &r_stop,
#endif /* H5_HAVE_GETRUSAGE */
t_start, t_stop, (size_t)(nread * size[0] * size[1]));
/* Read hyperslab */
HDassert(size[0] > 20 && size[1] > 20);
start[0] = start[1] = 10;
count[0] = count[1] = size[0] - 20;
status = H5Sselect_hyperslab(file_space, H5S_SELECT_SET, start, NULL, count, NULL);
HDassert(status >= 0);
synchronize();
#ifdef H5_HAVE_GETRUSAGE
HDgetrusage(RUSAGE_SELF, &r_start);
#endif
t_start = H5_get_time();
HDfprintf(stderr, HEADING, "in hdf5 partial");
for (u = 0; u < nread; u++) {
HDputc(PROGRESS, stderr);
HDfflush(stderr);
status = H5Dread(dset, H5T_NATIVE_UCHAR, file_space, file_space, H5P_DEFAULT, the_data);
HDassert(status >= 0);
}
#ifdef H5_HAVE_GETRUSAGE
HDgetrusage(RUSAGE_SELF, &r_stop);
#endif
t_stop = H5_get_time();
HDputc('\n', stderr);
print_stats("in hdf5 partial",
#ifdef H5_HAVE_GETRUSAGE
&r_start, &r_stop,
#endif /* H5_HAVE_GETRUSAGE */
t_start, t_stop, (size_t)(nread * size[0] * size[1]));
/* Close everything */
HDclose(fd);
H5Dclose(dset);
H5Sclose(file_space);
H5Fclose(file);
HDfree(the_data);
return 0;
}
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