Devices - 2021.2 English

Vitis Unified Software Platform Documentation: Application Acceleration Development (UG1393)

Document ID
UG1393
ft:locale
English (United States)
Release Date
2021-12-15
Version
2021.2 English

After a Xilinx platform is found, the application needs to identify the corresponding Xilinx devices.

The following code demonstrates finding all the Xilinx devices, with an upper limit of 16, by using API clGetDeviceIDs .

cl_device_id devices[16];  // compute device id
char cl_device_name[1001];
    
err = clGetDeviceIDs(platform_id, CL_DEVICE_TYPE_ACCELERATOR, 
  16, devices, &num_devices);
    
printf("INFO: Found %d devices\n", num_devices);
    
//iterate all devices to select the target device.
for (uint i=0; i<num_devices; i++) {
  err = clGetDeviceInfo(devices[i], CL_DEVICE_NAME, 1024, cl_device_name, 0);
  printf("CL_DEVICE_NAME %s\n", cl_device_name);
}
Important: The clGetDeviceIDs API is called with the platform_id and CL_DEVICE_TYPE_ACCELERATOR to receive all the available Xilinx devices.