Hi, Most likely PCI bus driver (a DPDK library) is missing. Either it is not linked into "helloworld" if it is your own app; or the path to DPDK libraries (*.so) is not in LD_LIBARY_PATH if it is "dpdk-helloworld" binary.
If this doesn't help, please post exact commands and their full output (log), not just "success" or "is right".
