libgomp/testsuite/libgomp.oacc-c-c++-common/lib-78.c

   1 /* { dg-do run { target openacc_nvidia_accel_selected } } */
   2 /* { dg-additional-options "-lcuda" } */
   3
   4 #include <stdio.h>
   5 #include <stdlib.h>
   6 #include <unistd.h>
   7 #include <openacc.h>
   8 #include <cuda.h>
   9 #include "timer.h"
  10
  11 int
  12 main (int argc, char **argv)
  13 {
  14   CUdevice dev;
  15   CUfunction delay;
  16   CUmodule module;
  17   CUresult r;
  18   CUstream stream;
  19   unsigned long *a, *d_a, dticks;
  20   int nbytes;
  21   float atime, dtime;
  22   void *kargs[2];
  23   int clkrate;
  24   int devnum, nprocs;
  25
  26   acc_init (acc_device_nvidia);
  27
  28   devnum = acc_get_device_num (acc_device_nvidia);
  29
  30   r = cuDeviceGet (&dev, devnum);
  31   if (r != CUDA_SUCCESS)
  32     {
  33       fprintf (stderr, "cuDeviceGet failed: %d\n", r);
  34       abort ();
  35     }
  36
  37   r =
  38     cuDeviceGetAttribute (&nprocs, CU_DEVICE_ATTRIBUTE_MULTIPROCESSOR_COUNT,
  39                           dev);
  40   if (r != CUDA_SUCCESS)
  41     {
  42       fprintf (stderr, "cuDeviceGetAttribute failed: %d\n", r);
  43       abort ();
  44     }
  45
  46   r = cuDeviceGetAttribute (&clkrate, CU_DEVICE_ATTRIBUTE_CLOCK_RATE, dev);
  47   if (r != CUDA_SUCCESS)
  48     {
  49       fprintf (stderr, "cuDeviceGetAttribute failed: %d\n", r);
  50       abort ();
  51     }
  52
  53   r = cuModuleLoad (&module, "subr.ptx");
  54   if (r != CUDA_SUCCESS)
  55     {
  56       fprintf (stderr, "cuModuleLoad failed: %d\n", r);
  57       abort ();
  58     }
  59
  60   r = cuModuleGetFunction (&delay, module, "delay");
  61   if (r != CUDA_SUCCESS)
  62     {
  63       fprintf (stderr, "cuModuleGetFunction failed: %d\n", r);
  64       abort ();
  65     }
  66
  67   nbytes = nprocs * sizeof (unsigned long);
  68
  69   dtime = 200.0;
  70
  71   dticks = (unsigned long) (dtime * clkrate);
  72
  73   a = (unsigned long *) malloc (nbytes);
  74   d_a = (unsigned long *) acc_malloc (nbytes);
  75
  76   acc_map_data (a, d_a, nbytes);
  77
  78   kargs[0] = (void *) &d_a;
  79   kargs[1] = (void *) &dticks;
  80
  81   stream = (CUstream) acc_get_cuda_stream (0);
  82   if (stream != NULL)
  83     abort ();
  84
  85   r = cuStreamCreate (&stream, CU_STREAM_DEFAULT);
  86   if (r != CUDA_SUCCESS)
  87     {
  88       fprintf (stderr, "cuStreamCreate failed: %d\n", r);
  89       abort ();
  90     }
  91
  92   if (!acc_set_cuda_stream (0, stream))
  93     abort ();
  94
  95   init_timers (1);
  96
  97   start_timer (0);
  98
  99   r = cuLaunchKernel (delay, 1, 1, 1, 1, 1, 1, 0, stream, kargs, 0);
 100   if (r != CUDA_SUCCESS)
 101     {
 102       fprintf (stderr, "cuLaunchKernel failed: %d\n", r);
 103       abort ();
 104     }
 105
 106   acc_wait_all ();
 107
 108   atime = stop_timer (0);
 109
 110   if (atime < dtime)
 111     {
 112       fprintf (stderr, "actual time < delay time\n");
 113       abort ();
 114     }
 115
 116   start_timer (0);
 117
 118   acc_wait_all ();
 119
 120   atime = stop_timer (0);
 121
 122   if (0.010 < atime)
 123     {
 124       fprintf (stderr, "actual time too long\n");
 125       abort ();
 126     }
 127
 128   acc_unmap_data (a);
 129
 130   fini_timers ();
 131
 132   free (a);
 133   acc_free (d_a);
 134
 135   acc_shutdown (acc_device_nvidia);
 136
 137   exit (0);
 138 }
 139
 140 /* { dg-output "" } */