libgomp/testsuite/libgomp.oacc-c-c++-common/loop-red-wv-1.c

   1 #include <stdio.h>
   2 #include <openacc.h>
   3 #include <gomp-constants.h>
   4
   5 #define N (32*32*32+17)
   6 int main ()
   7 {
   8   int ix;
   9   int ondev = 0;
  10   int t = 0, h = 0;
  11
  12 #pragma acc parallel num_workers(32) vector_length(32) copy(ondev)
  13   {
  14 #pragma acc loop worker vector reduction (+:t)
  15     for (unsigned ix = 0; ix < N; ix++)
  16       {
  17         int val = ix;
  18
  19         if (acc_on_device (acc_device_not_host))
  20           {
  21             int g, w, v;
  22
  23             g = __builtin_goacc_parlevel_id (GOMP_DIM_GANG);
  24             w = __builtin_goacc_parlevel_id (GOMP_DIM_WORKER);
  25             v = __builtin_goacc_parlevel_id (GOMP_DIM_VECTOR);
  26             val = (g << 16) | (w << 8) | v;
  27             ondev = 1;
  28           }
  29         t += val;
  30       }
  31   }
  32
  33   for (ix = 0; ix < N; ix++)
  34     {
  35       int val = ix;
  36       if(ondev)
  37         {
  38           int g = 0;
  39           int w = (ix / 32) % 32;
  40           int v = ix % 32;
  41
  42           val = (g << 16) | (w << 8) | v;
  43         }
  44       h += val;
  45     }
  46   if (t != h)
  47     {
  48       printf ("t=%x expected %x\n", t, h);
  49       return 1;
  50     }
  51
  52   return 0;
  53 }