The AXI firewall should prevent host hangs. This is why the AXI Protocol Firewall IP is included in all production Vitis platforms. When the firewall trips, one of the first checks to perform is confirming if the host code and kernels are set up to use the same memory banks. The following steps detail how to perform this check.
xbutilto program the FPGA:
xbutil program -p <xclbin>Tip: Refer to xbutil Utility for more information on
- Run the
xbutil examineoption to check memory topology:
xbutil examine -r memory -d <bdf>In the following example, there are no kernels associated with memory banks:
- If the host code expects any DDR banks/PLRAMs to be used, this report should
indicate an issue. In this case, it is necessary to check kernel and host code
expectations. If the host code is using the Xilinx
OpenCL extensions, it is necessary to check
which DDR banks should be used by the kernel. These should match the
connectivity.spoptions specified as discussed in Mapping Kernel Ports to Memory.