OpenCLに対応するデバイスの列挙 http://blog.unfindable.net/archives/5829

opencl-devices.c

#include <stdio.h>
#include <stdlib.h>
 
#ifdef __APPLE__
#include <OpenCL/opencl.h>
#else
#include <CL/cl.h>
#endif
 
#define MAX_PLATFORM_IDS 8
#define MAX_DEVICE_IDS 8
#define BUFFER_SIZE 4096
 
int main(void)
{
  cl_uint ret_num_platforms;
  cl_uint ret_num_devices;
  cl_platform_id platforms[MAX_PLATFORM_IDS];
  cl_device_id devices[MAX_DEVICE_IDS];
  unsigned int pidx, didx;
  char value[BUFFER_SIZE];
  size_t size;
 
  cl_int ret = clGetPlatformIDs(MAX_PLATFORM_IDS, platforms, &ret_num_platforms);
  if (ret != CL_SUCCESS) {
    printf("Error (clGetPlatformIDs): %d\n", ret);
    exit(1);
  }
  for (pidx = 0; pidx < ret_num_platforms; ++pidx) {
    ret = clGetPlatformInfo(platforms[pidx], CL_PLATFORM_NAME, BUFFER_SIZE, value, &size);
    printf("Platform: %s\n", value);
    ret = clGetPlatformInfo(platforms[pidx], CL_PLATFORM_VERSION, BUFFER_SIZE, value, &size);
    printf("CL_PLATFORM_VERSION: %s\n", value);
    
    ret = clGetDeviceIDs(platforms[pidx], CL_DEVICE_TYPE_ALL, MAX_DEVICE_IDS, devices, &ret_num_devices);
    if (ret != CL_SUCCESS) {
      printf("Error (clGetDeviceIDs): %d\n", ret);
      exit(1);
    }
    for (didx = 0; didx < ret_num_devices; ++didx) {
      ret = clGetDeviceInfo(devices[didx], CL_DEVICE_NAME, BUFFER_SIZE, value, &size);
      printf("\n  Device: %s\n", value);
      ret = clGetDeviceInfo(devices[didx], CL_DEVICE_VERSION, BUFFER_SIZE, value, &size);
      printf("  CL_DEVICE_VERSION: %s\n", value);
    }
    printf("------------------------------------------------------------------------------\n");
  }
  return 0;
}