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  1. // OpenCL tutorial 1
  2.  
  3. #include <iostream>
  4. #include <string>
  5. #include <vector>
  6.  
  7. #ifdef __APPLE__
  8. #include <OpenCL/opencl.h>
  9. #else
  10. #include <CL/cl.h>
  11. #endif
  12.  
  13.  
  14. int main()
  15. {
  16.         cl_int err;
  17.         cl_uint num;
  18.         err = clGetPlatformIDs(0, 0, &num);
  19.         if(err != CL_SUCCESS) {
  20.                 std::cerr << "Unable to get platforms\n";
  21.                 return 0;
  22.         }
  23.  
  24.         std::vector<cl_platform_id> platforms(num);
  25.         err = clGetPlatformIDs(num, &platforms[0], &num);
  26.         if(err != CL_SUCCESS) {
  27.                 std::cerr << "Unable to get platform ID\n";
  28.                 return 0;
  29.         }
  30.  
  31.         cl_context_properties prop[] = { CL_CONTEXT_PLATFORM, reinterpret_cast<cl_context_properties>(platforms[0]), 0 };
  32.         cl_context context = clCreateContextFromType(prop, CL_DEVICE_TYPE_GPU, NULL, NULL, NULL);
  33.         if(context == 0) {
  34.                 std::cerr << "Can't create OpenCL context\n";
  35.                 return 0;
  36.         }
  37.  
  38.         size_t cb;
  39.         clGetContextInfo(context, CL_CONTEXT_DEVICES, 0, NULL, &cb);
  40.         std::vector<cl_device_id> devices(cb / sizeof(cl_device_id));
  41.         clGetContextInfo(context, CL_CONTEXT_DEVICES, cb, &devices[0], 0);
  42.  
  43.         clGetDeviceInfo(devices[0], CL_DEVICE_NAME, 0, NULL, &cb);
  44.         std::string devname;
  45.         devname.resize(cb);
  46.         clGetDeviceInfo(devices[0], CL_DEVICE_NAME, cb, &devname[0], 0);
  47.         std::cout << "Device: " << devname.c_str() << "\n";
  48.  
  49.         clReleaseContext(context);
  50.         return 0;
  51. }
Compilation error #stdin compilation error #stdout 0s 0KB
comments ()
stdin
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Standard input is empty
compilation info 
prog.cpp:10:19: fatal error: CL/cl.h: No such file or directory
 #include <CL/cl.h>
                   ^
compilation terminated.
stdout
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Standard output is empty
https://ideone.com/dCoMX6
language:
C++14 (gcc 8.3)
created:
9 years ago
visibility:
public

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