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/******************************************************************************
* Copyright (c) Intel Corporation - All rights reserved. *
* This file is part of the LIBXSMM library. *
* *
* For information on the license, see the LICENSE file. *
* Further information: https://github.com/hfp/libxsmm/ *
* SPDX-License-Identifier: BSD-3-Clause *
******************************************************************************/
/* Hans Pabst (Intel Corp.)
******************************************************************************/
#include <libxsmm.h>
#include <stdio.h>
#include <math.h>
int main(int argc, char* argv[])
{
const int insize = (1 < argc ? atoi(argv[1]) : 0);
const int niters = (2 < argc ? atoi(argv[2]) : 1);
const size_t n = (0 >= insize ? (((size_t)2 << 30/*2 GB*/) / sizeof(float)) : ((size_t)insize));
float *inp, *out, *gold;
size_t size, nrpt;
int result;
if (0 < niters) {
nrpt = niters;
size = n;
}
else {
nrpt = n;
size = LIBXSMM_MAX(LIBXSMM_ABS(niters), 1);
}
gold = (float*)(malloc(sizeof(float) * size));
out = (float*)(malloc(sizeof(float) * size));
inp = (float*)(malloc(sizeof(float) * size));
if (NULL != gold && NULL != out && NULL != inp) {
libxsmm_timer_tickint start;
libxsmm_matdiff_info diff;
size_t i, j;
/* initialize the input data */
libxsmm_rng_set_seed(25071975);
libxsmm_rng_f32_seq(inp, (libxsmm_blasint)size);
/* collect gold data for exp2 function */
{ start = libxsmm_timer_tick();
for (j = 0; j < nrpt; ++j) {
for (i = 0; i < size; ++i) {
gold[i] = (float)LIBXSMM_EXP2(inp[i]);
}
}
printf("standard exp2:\t%.3f s\t\tgold\n", libxsmm_timer_duration(start, libxsmm_timer_tick()));
}
{ start = libxsmm_timer_tick();
for (j = 0; j < nrpt; ++j) {
for (i = 0; i < size; ++i) {
out[i] = LIBXSMM_EXP2F(inp[i]);
}
}
printf("standard exp2f:\t%.3f s", libxsmm_timer_duration(start, libxsmm_timer_tick()));
if (EXIT_SUCCESS == libxsmm_matdiff(&diff, LIBXSMM_DATATYPE_F32, 1/*m*/,
(libxsmm_blasint)size, gold, out, NULL/*ldref*/, NULL/*ldtst*/))
{
printf("\t\tdiff: L2abs=%f Linf=%f\n", diff.l2_abs, diff.linf_abs);
}
else printf("\n");
}
{ start = libxsmm_timer_tick();
for (j = 0; j < nrpt; ++j) {
for (i = 0; i < size; ++i) {
out[i] = libxsmm_sexp2(inp[i]);
}
}
printf("libxsmm_sexp2:\t%.3f s", libxsmm_timer_duration(start, libxsmm_timer_tick()));
if (EXIT_SUCCESS == libxsmm_matdiff(&diff, LIBXSMM_DATATYPE_F32, 1/*m*/,
(libxsmm_blasint)size, gold, out, NULL/*ldref*/, NULL/*ldtst*/))
{
printf("\t\tdiff: L2abs=%f Linf=%f\n", diff.l2_abs, diff.linf_abs);
}
else printf("\n");
}
/* collect gold data for limited-range exp2 function */
{ start = libxsmm_timer_tick();
for (j = 0; j < nrpt; ++j) {
for (i = 0; i < size; ++i) {
const unsigned char input = (unsigned char)(255.f * inp[i]);
gold[i] = (float)LIBXSMM_EXP2(input);
}
}
printf("low-range exp2:\t%.3f s\t\tgold\n", libxsmm_timer_duration(start, libxsmm_timer_tick()));
}
{ start = libxsmm_timer_tick();
for (j = 0; j < nrpt; ++j) {
for (i = 0; i < size; ++i) {
const unsigned char input = (unsigned char)(255.f * inp[i]);
out[i] = libxsmm_sexp2_u8(input);
}
}
printf("libxsmm_sexp2:\t%.3f s", libxsmm_timer_duration(start, libxsmm_timer_tick()));
if (EXIT_SUCCESS == libxsmm_matdiff(&diff, LIBXSMM_DATATYPE_F32, 1/*m*/,
(libxsmm_blasint)size, gold, out, NULL/*ldref*/, NULL/*ldtst*/))
{
printf("\t\tdiff: L2abs=%f Linf=%f\n", diff.l2_abs, diff.linf_abs);
}
else printf("\n");
}
/* collect gold data for sqrt function */
{ start = libxsmm_timer_tick();
for (j = 0; j < nrpt; ++j) {
for (i = 0; i < size; ++i) {
gold[i] = (float)sqrt(inp[i]);
}
}
printf("standard sqrt:\t%.3f s\t\tgold\n", libxsmm_timer_duration(start, libxsmm_timer_tick()));
}
{ start = libxsmm_timer_tick();
for (j = 0; j < nrpt; ++j) {
for (i = 0; i < size; ++i) {
out[i] = (float)libxsmm_dsqrt(inp[i]);
}
}
printf("libxsmm_dsqrt:\t%.3f s", libxsmm_timer_duration(start, libxsmm_timer_tick()));
if (EXIT_SUCCESS == libxsmm_matdiff(&diff, LIBXSMM_DATATYPE_F32, 1/*m*/,
(libxsmm_blasint)size, gold, out, NULL/*ldref*/, NULL/*ldtst*/))
{
printf("\t\tdiff: L2abs=%f Linf=%f\n", diff.l2_abs, diff.linf_abs);
}
else printf("\n");
}
{ start = libxsmm_timer_tick();
for (j = 0; j < nrpt; ++j) {
for (i = 0; i < size; ++i) {
out[i] = LIBXSMM_SQRTF(inp[i]);
}
}
printf("standard sqrtf:\t%.3f s", libxsmm_timer_duration(start, libxsmm_timer_tick()));
if (EXIT_SUCCESS == libxsmm_matdiff(&diff, LIBXSMM_DATATYPE_F32, 1/*m*/,
(libxsmm_blasint)size, gold, out, NULL/*ldref*/, NULL/*ldtst*/))
{
printf("\t\tdiff: L2abs=%f Linf=%f\n", diff.l2_abs, diff.linf_abs);
}
else printf("\n");
}
{ start = libxsmm_timer_tick();
for (j = 0; j < nrpt; ++j) {
for (i = 0; i < size; ++i) {
out[i] = libxsmm_ssqrt(inp[i]);
}
}
printf("libxsmm_ssqrt:\t%.3f s", libxsmm_timer_duration(start, libxsmm_timer_tick()));
if (EXIT_SUCCESS == libxsmm_matdiff(&diff, LIBXSMM_DATATYPE_F32, 1/*m*/,
(libxsmm_blasint)size, gold, out, NULL/*ldref*/, NULL/*ldtst*/))
{
printf("\t\tdiff: L2abs=%f Linf=%f\n", diff.l2_abs, diff.linf_abs);
}
else printf("\n");
}
result = EXIT_SUCCESS;
}
else {
result = EXIT_FAILURE;
}
free(gold);
free(out);
free(inp);
return result;
}
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