mirror of
https://github.com/tildearrow/furnace.git
synced 2024-11-01 18:42:40 +00:00
94 lines
2.4 KiB
C
94 lines
2.4 KiB
C
/*
|
|
* Copyright (c) 2001 Matteo Frigo
|
|
* Copyright (c) 2001 Massachusetts Institute of Technology
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*
|
|
*/
|
|
|
|
|
|
#include "libbench2/bench.h"
|
|
|
|
int no_speed_allocation = 0; /* 1 to not allocate array data in speed() */
|
|
|
|
void speed(const char *param, int setup_only)
|
|
{
|
|
double *t;
|
|
int iter = 0, k;
|
|
bench_problem *p;
|
|
double tmin, y;
|
|
|
|
t = (double *) bench_malloc(time_repeat * sizeof(double));
|
|
|
|
for (k = 0; k < time_repeat; ++k)
|
|
t[k] = 0;
|
|
|
|
p = problem_parse(param);
|
|
BENCH_ASSERT(can_do(p));
|
|
if (!no_speed_allocation) {
|
|
problem_alloc(p);
|
|
problem_zero(p);
|
|
}
|
|
|
|
timer_start(LIBBENCH_TIMER);
|
|
setup(p);
|
|
p->setup_time = bench_cost_postprocess(timer_stop(LIBBENCH_TIMER));
|
|
|
|
/* reset the input to zero again, because the planner in paranoid
|
|
mode sets it to random values, thus making the benchmark
|
|
diverge. */
|
|
if (!no_speed_allocation)
|
|
problem_zero(p);
|
|
|
|
if (setup_only)
|
|
goto done;
|
|
|
|
start_over:
|
|
for (iter = 1; iter < (1<<30); iter *= 2) {
|
|
tmin = 1.0e20;
|
|
for (k = 0; k < time_repeat; ++k) {
|
|
timer_start(LIBBENCH_TIMER);
|
|
doit(iter, p);
|
|
y = bench_cost_postprocess(timer_stop(LIBBENCH_TIMER));
|
|
if (y < 0) /* yes, it happens */
|
|
goto start_over;
|
|
t[k] = y;
|
|
if (y < tmin)
|
|
tmin = y;
|
|
}
|
|
|
|
if (tmin >= time_min)
|
|
goto done;
|
|
}
|
|
|
|
goto start_over; /* this also happens */
|
|
|
|
done:
|
|
done(p);
|
|
|
|
if (iter)
|
|
for (k = 0; k < time_repeat; ++k)
|
|
t[k] /= iter;
|
|
else
|
|
for (k = 0; k < time_repeat; ++k)
|
|
t[k] = 0;
|
|
|
|
report(p, t, time_repeat);
|
|
|
|
if (!no_speed_allocation)
|
|
problem_destroy(p);
|
|
bench_free(t);
|
|
return;
|
|
}
|