Hi, I am trying to get DPDK and UHD working with a Mellanox ConnectX-5 NIC. I am using UHD-3.15.LTS (the installation was done with PyBOMBS in order to have RFNoC support, I did it following the RFNoC Getting Started guide), with an X310 and running Ubuntu 16.04 on the Host. I have followed the guides Getting Started with DPDK and UHD <https://kb.ettus.com/Getting_Started_with_DPDK_and_UHD> and UHD's manual DPDK page <https://files.ettus.com/manual_archive/v3.15.0.0/html/page_dpdk.html> with no luck. For DPDK, as I am using Ubuntu 16.04, I downloaded from DPDK's download page <https://core.dpdk.org/download/> the recommended DPDK 17.11.10 (LTS) version. About the ConnectX-5, I installed its drivers (the LTS version of MLNX_OFED <https://www.mellanox.com/products/infiniband-drivers/linux/mlnx_ofed>) with "./mlnxofedinstall --upstream-libs --dpdk". The drivers seem to work fine as I am able to run UHD applications using the X310 at 10Gb/s, however when setting "use_dpdk=1" I always get the "[WARNING] [DPDK] Detected use_dpdk argument, but DPDK support not built in." message. My uhd.conf file looks like this: [use_dpdk=1] dpdk-mtu=9000 dpdk-driver=~/dpdk-stable-17.11.10/build/build/drivers ; (not sure about this line as I don't have the /usr/lib/x86_64-linux-gnu/dpdk-17.11-drivers/ directory, maybe this is a clue?) dpdk-corelist=0,1 dpdk-num-mbufs=4095 dpdk-mbufs-cache-size=315 [dpdk-mac=04:3f:72:c3:70:fd] dpdk-io-cpu=1 dpdk-ipv4=192.168.40.1/24 [dpdk-mac=04:3f:72:c3:70:fc] dpdk-io-cpu=1 dpdk-ipv4=192.168.10.1/24 If anyone with this setup has gotten DPDK to work I would appreciate the help very much. Best regards, Jorge

Hi Jorge, The '[WARNING] [DPDK] Detected use_dpdk argument, but DPDK support not built in' message means that the version of UHD you are using (in this case, the 3.15.LTS version you installed via PyBOMBS) was not compiled with DPDK support. For DPDK to be available and usable, the UHD driver has to be built against the appropriate version of the DPDK libraries for UHD. If you build the UHD 3.15.LTS branch from source and have the appropriate DPDK libraries installed, the cmake step prior to compilation will indicate support for DPDK in the output: -- Found DPDK: /usr/local/include/dpdk (found version "18.11") (note: this is the output for building UHD-4.0, hence the more recent version) : : -- ###################################################### -- # UHD enabled components -- ###################################################### : -- * DPDK : Then you should be able to proceed. Best regards, Aaron On Thu, Jan 28, 2021 at 6:48 AM Jorge Arroyo Giganto via USRP-users <usrp-users@lists.ettus.com> wrote: > > Hi, > > I am trying to get DPDK and UHD working with a Mellanox ConnectX-5 NIC. > > I am using UHD-3.15.LTS (the installation was done with PyBOMBS in order to have RFNoC support, I did it following the RFNoC Getting Started guide), with an X310 and running Ubuntu 16.04 on the Host. > > I have followed the guides Getting Started with DPDK and UHD and UHD's manual DPDK page with no luck. > > For DPDK, as I am using Ubuntu 16.04, I downloaded from DPDK's download page the recommended DPDK 17.11.10 (LTS) version. > > About the ConnectX-5, I installed its drivers (the LTS version of MLNX_OFED) with "./mlnxofedinstall --upstream-libs --dpdk". The drivers seem to work fine as I am able to run UHD applications using the X310 at 10Gb/s, however when setting "use_dpdk=1" I always get the "[WARNING] [DPDK] Detected use_dpdk argument, but DPDK support not built in." message. > > My uhd.conf file looks like this: > > [use_dpdk=1] > dpdk-mtu=9000 > dpdk-driver=~/dpdk-stable-17.11.10/build/build/drivers ; (not sure about this line as I don't have the /usr/lib/x86_64-linux-gnu/dpdk-17.11-drivers/ directory, maybe this is a clue?) > dpdk-corelist=0,1 > dpdk-num-mbufs=4095 > dpdk-mbufs-cache-size=315 > > [dpdk-mac=04:3f:72:c3:70:fd] > dpdk-io-cpu=1 > dpdk-ipv4=192.168.40.1/24 > > [dpdk-mac=04:3f:72:c3:70:fc] > dpdk-io-cpu=1 > dpdk-ipv4=192.168.10.1/24 > > > If anyone with this setup has gotten DPDK to work I would appreciate the help very much. > > Best regards, > > Jorge > _______________________________________________ > USRP-users mailing list > USRP-users@lists.ettus.com > http://lists.ettus.com/mailman/listinfo/usrp-users_lists.ettus.com