Which development suite should be used for Skylake-P Blue Mountain Pass?

Make sure the board with FPGA is connected to the system via the USB Blaster cable or other other JTAG cable. As mentioned earlier, if you're compiling OpenCL on a separate dev system using the Quartus software tools, the board needs to be connected to this system for the tool to be able to download the hardware and software files onto the board. Make sure that this connection between the FPGA-CPU board and the system is there before compiling and downloading the code.