The host application loads the AI Engine with the XCLBIN with the xclloadxclbin() function.
The following snippet of code shows usage in the application shows how to load AIE.
//In load_xclbin()
...
if (xclLoadXclBin(device, top))
throw std::runtime_error("Bitstream download failed");
...
If the AI Engine load fails, the load_xclbin() function throws an exception. A system reboot might be required.