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// Copyright Naoki Shibata and contributors 2010 - 2021.
// Distributed under the Boost Software License, Version 1.0.
// (See accompanying file LICENSE.txt or copy at
// http://www.boost.org/LICENSE_1_0.txt)
#define _DEFAULT_SOURCE
#define _XOPEN_SOURCE 700
#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#include <assert.h>
#include <time.h>
#include <unistd.h>
#include <sys/time.h>
#include <math.h>
#include <complex.h>
#include "sleef.h"
#include "sleefdft.h"
static uint64_t gettime() {
struct timespec tp;
clock_gettime(CLOCK_MONOTONIC, &tp);
return (uint64_t)tp.tv_sec * 1000000000 + ((uint64_t)tp.tv_nsec);
}
int mode[] = { SLEEF_MODE_MEASURE | SLEEF_MODE_NO_MT, SLEEF_MODE_MEASURE};
#define ENABLE_SP
//#define ROUNDTRIP
#define REPEAT 2
//#define ENABLE_SLEEP
//#define WARMUP
int main(int argc, char **argv) {
int start = 1, end = 18;
if (argc > 1) start = atoi(argv[1]);
if (argc > 2) end = atoi(argv[2]);
double *din = (double *)Sleef_malloc((1 << 18)*2 * sizeof(double));
double *dout = (double *)Sleef_malloc((1 << 18)*2 * sizeof(double));
float *sin = (float *)Sleef_malloc((1 << 18)*2 * sizeof(float));
float *sout = (float *)Sleef_malloc((1 << 18)*2 * sizeof(float));
SleefDFT_setPlanFilePath(NULL, NULL, SLEEF_PLAN_RESET | SLEEF_PLAN_READONLY);
for(int log2n=start;log2n<=end;log2n++) {
const int n = 1 << log2n;
int64_t niter = (int64_t)(1000000000.0 / REPEAT / n / log2n);
printf("%d ", n);
for(int m=0;m<2;m++) {
#ifdef ENABLE_SLEEP
sleep(1);
#endif
struct SleefDFT *pf = SleefDFT_double_init1d(n, NULL, NULL, mode[m]);
#ifdef ROUNDTRIP
struct SleefDFT *pb = SleefDFT_double_init1d(n, NULL, NULL, mode[m] | SLEEF_MODE_BACKWARD);
#endif
for(int i=0;i<n*2;i++) {
din[i] = 0;
}
#ifdef ENABLE_SLEEP
sleep(1);
#endif
#ifdef WARMUP
for(int64_t i=0;i<niter/2;i++) {
SleefDFT_double_execute(pf, din, dout);
#ifdef ROUNDTRIP
SleefDFT_double_execute(pb, dout, din);
#endif
}
#endif
uint64_t best = 1LL << 62;
//printf("\n");
for(int rep=0;rep<REPEAT;rep++) {
uint64_t tm0 = gettime();
for(int64_t i=0;i<niter;i++) {
SleefDFT_double_execute(pf, din, dout);
#ifdef ROUNDTRIP
SleefDFT_double_execute(pb, dout, din);
#endif
}
uint64_t tm1 = gettime();
if (tm1 - tm0 < best) best = tm1 - tm0;
//printf("%g\n", (double)(tm1 - tm0));
}
SleefDFT_dispose(pf);
#ifdef ROUNDTRIP
SleefDFT_dispose(pb);
#endif
double timeus = best / ((double)niter * 1000);
#ifdef ROUNDTRIP
double mflops = 10 * n * log2n / timeus;
#else
double mflops = 5 * n * log2n / timeus;
#endif
printf("%g ", mflops);
}
#ifdef ENABLE_SP
for(int m=0;m<2;m++) {
#ifdef ENABLE_SLEEP
sleep(1);
#endif
struct SleefDFT *pf = SleefDFT_float_init1d(n, NULL, NULL, mode[m]);
#ifdef ROUNDTRIP
struct SleefDFT *pb = SleefDFT_float_init1d(n, NULL, NULL, mode[m] | SLEEF_MODE_BACKWARD);
#endif
for(int i=0;i<n*2;i++) {
sin[i] = 0;
}
#ifdef ENABLE_SLEEP
sleep(1);
#endif
#ifdef WARMUP
for(int64_t i=0;i<niter/2;i++) {
SleefDFT_float_execute(pf, sin, sout);
#ifdef OUNDTRIP
SleefDFT_float_execute(pb, sout, sin);
#endif
}
#endif
uint64_t best = 1LL << 62;
for(int rep=0;rep<REPEAT;rep++) {
uint64_t tm0 = gettime();
for(int64_t i=0;i<niter;i++) {
SleefDFT_float_execute(pf, sin, sout);
#ifdef ROUNDTRIP
SleefDFT_float_execute(pb, sout, sin);
#endif
}
uint64_t tm1 = gettime();
if (tm1 - tm0 < best) best = tm1 - tm0;
}
SleefDFT_dispose(pf);
#ifdef ROUNDTRIP
SleefDFT_dispose(pb);
#endif
double timeus = best / ((double)niter * 1000);
#ifdef ROUNDTRIP
double mflops = 10 * n * log2n / timeus;
#else
double mflops = 5 * n * log2n / timeus;
#endif
printf("%g ", mflops);
}
#endif
printf("\n");
}
}
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