benchtests/bench-libmvec-skeleton.c

   1 /* Skeleton for libmvec benchmark programs.
   2    Copyright (C) 2021-2024 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the License, or (at your option) any later version.
   9
  10    The GNU C Library is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library; if not, see
  17    <https://www.gnu.org/licenses/>.  */
  18
  19 #include <string.h>
  20 #include <stdint.h>
  21 #include <stdbool.h>
  22 #include <stdio.h>
  23 #include <time.h>
  24 #include <inttypes.h>
  25 #include <bench-timing.h>
  26 #include <json-lib.h>
  27 #include <bench-util.h>
  28 #include <math-tests-arch.h>
  29 #include <bench-libmvec-arch.h>
  30
  31 #include <bench-util.c>
  32 #define D_ITERS 200000
  33
  34 int
  35 main (int argc, char **argv)
  36 {
  37   unsigned long i, k;
  38   timing_t start, end;
  39   json_ctx_t json_ctx;
  40
  41 #ifdef INIT_ARCH
  42   INIT_ARCH ();
  43 #endif
  44
  45   bench_start ();
  46
  47 #ifdef BENCH_INIT
  48   BENCH_INIT ();
  49 #endif
  50
  51   json_init (&json_ctx, 2, stdout);
  52
  53   /* Begin function.  */
  54   json_attr_object_begin (&json_ctx, FUNCNAME);
  55
  56   for (int v = 0; v < NUM_VARIANTS; v++)
  57     {
  58       double d_total_time = 0;
  59       timing_t cur;
  60       for (k = 0; k < D_ITERS; k++)
  61         {
  62           TIMING_NOW (start);
  63           for (i = 0; i < NUM_SAMPLES (v); i++)
  64             BENCH_FUNC (v, i);
  65           TIMING_NOW (end);
  66
  67           TIMING_DIFF (cur, start, end);
  68
  69           TIMING_ACCUM (d_total_time, cur);
  70         }
  71       double d_total_data_set = D_ITERS * NUM_SAMPLES (v) * STRIDE;
  72
  73       /* Begin variant.  */
  74       json_attr_object_begin (&json_ctx, VARIANT (v));
  75
  76       json_attr_double (&json_ctx, "duration", d_total_time);
  77       json_attr_double (&json_ctx, "iterations", d_total_data_set);
  78       json_attr_double (&json_ctx, "mean", d_total_time / d_total_data_set);
  79
  80       /* End variant.  */
  81       json_attr_object_end (&json_ctx);
  82     }
  83
  84   /* End function.  */
  85   json_attr_object_end (&json_ctx);
  86
  87   return 0;
  88 }