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7c14d8a985
Increase benchmark iterations for math and vector math functions to improve timing accuracy. Vector math benchmarks now take 1-3 seconds on a modern CPU. Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
89 lines
2.2 KiB
C
89 lines
2.2 KiB
C
/* Skeleton for libmvec benchmark programs.
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Copyright (C) 2021-2024 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<https://www.gnu.org/licenses/>. */
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#include <string.h>
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#include <stdint.h>
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#include <stdbool.h>
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#include <stdio.h>
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#include <time.h>
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#include <inttypes.h>
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#include <bench-timing.h>
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#include <json-lib.h>
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#include <bench-util.h>
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#include <math-tests-arch.h>
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#include <bench-libmvec-arch.h>
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#include <bench-util.c>
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#define D_ITERS 200000
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int
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main (int argc, char **argv)
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{
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unsigned long i, k;
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timing_t start, end;
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json_ctx_t json_ctx;
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#ifdef INIT_ARCH
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INIT_ARCH ();
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#endif
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bench_start ();
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#ifdef BENCH_INIT
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BENCH_INIT ();
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#endif
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json_init (&json_ctx, 2, stdout);
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/* Begin function. */
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json_attr_object_begin (&json_ctx, FUNCNAME);
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for (int v = 0; v < NUM_VARIANTS; v++)
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{
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double d_total_time = 0;
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timing_t cur;
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for (k = 0; k < D_ITERS; k++)
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{
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TIMING_NOW (start);
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for (i = 0; i < NUM_SAMPLES (v); i++)
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BENCH_FUNC (v, i);
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TIMING_NOW (end);
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TIMING_DIFF (cur, start, end);
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TIMING_ACCUM (d_total_time, cur);
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}
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double d_total_data_set = D_ITERS * NUM_SAMPLES (v) * STRIDE;
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/* Begin variant. */
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json_attr_object_begin (&json_ctx, VARIANT (v));
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json_attr_double (&json_ctx, "duration", d_total_time);
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json_attr_double (&json_ctx, "iterations", d_total_data_set);
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json_attr_double (&json_ctx, "mean", d_total_time / d_total_data_set);
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/* End variant. */
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json_attr_object_end (&json_ctx);
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}
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/* End function. */
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json_attr_object_end (&json_ctx);
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return 0;
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}
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