Host Programming - 2021.2 English

In the Vitis™ environment, the host application can be written in native C++ using the Xilinx® runtime (XRT) native C++ API or industry standard OpenCL™ API. The XRT native API is described here in brief, with additional details available under XRT Native API on the XRT documentation site. Refer to OpenCL Programming for a discussion on writing the host application using the OpenCL API.

In general, the structure of the host application can be divided into the following steps:

1. Specifying the accelerator device ID and loading the .xclbin.
2. Setting up the kernel and kernel arguments.
3. Transferring data between the host and kernels.
4. Running the kernel and returning results.

g++ -g -std=c++14 -I$XILINX_XRT/include -L$XILINX_XRT/lib -lxrt_coreutil -pthread

Compiling host code with XRT native C++ API requires C++ standard with -std=c++14. On GCC version older than 4.9.0, use -std=c++1y instead because -std=c++14 is introduced to GCC from 4.9.0.