Platform - 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

Upon initialization, the host application needs to identify a platform composed of one or more Xilinx devices. The following code fragment shows a common method of identifying a Xilinx platform.

cl_platform_id platform_id;         // platform id

err = clGetPlatformIDs(16, platforms, &platform_count);
    
// Find Xilinx Platform
for (unsigned int iplat=0; iplat<platform_count; iplat++) {
  err = clGetPlatformInfo(platforms[iplat], 
    CL_PLATFORM_VENDOR, 
    1000, 
    (void *)cl_platform_vendor,
    NULL);

  if (strcmp(cl_platform_vendor, "Xilinx") == 0) { 
  // Xilinx Platform found
  platform_id = platforms[iplat];
  }
}

The OpenCL API call clGetPlatformIDs is used to discover the set of available OpenCL platforms for a given system. Then, clGetPlatformInfo is used to identify Xilinx device based platforms by matching cl_platform_vendor with the string "Xilinx".