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