[USRP-users] dpdk with x300

Sam Reiter sam.reiter at ettus.com
Tue Jan 14 11:10:06 EST 2020


Lorenzo,

Since we started this thread, we've published a DPDK-specific app note. At
this point, I'd recommend you start the DPDK install process from scratch
using this guide:

https://kb.ettus.com/Getting_Started_with_DPDK_and_UHD

Best,

Sam

On Fri, Jan 10, 2020 at 5:15 PM Minutolo, Lorenzo via USRP-users <
usrp-users at lists.ettus.com> wrote:

> As a side note: I tried running the program as "sudo su" with the same
> exact result.
>
> Lorenzo
> ------------------------------
> *From:* USRP-users <usrp-users-bounces at lists.ettus.com> on behalf of
> Minutolo, Lorenzo via USRP-users <usrp-users at lists.ettus.com>
> *Sent:* Friday, January 10, 2020 3:08 PM
> *To:* Sam Reiter <sam.reiter at ettus.com>
> *Cc:* usrp-users at lists.ettus.com <usrp-users at lists.ettus.com>
> *Subject:* Re: [USRP-users] dpdk with x300
>
> Changed the driver string but the problem persists. Is it problematic that
> the NIC is on the last PCIe slot of the motherboard (same NUMA socket)?
>
> I attached the command I'm giving and the output.
>
> Thanks,
> Lorenzo
> ------------------------------
> *From:* Sam Reiter <sam.reiter at ettus.com>
> *Sent:* Monday, January 6, 2020 2:05 PM
> *To:* Minutolo, Lorenzo <minutolo at caltech.edu>
> *Cc:* usrp-users at lists.ettus.com <usrp-users at lists.ettus.com>
> *Subject:* Re: [USRP-users] dpdk with x300
>
> That should be fine.
>
> Looking over those screenshots again, you'll need to change your dpdk
> driver path in uhd.conf. Here's what the uncommented parts of uhd.conf
> should look like for 17.11:
>
> [use_dpdk=1]
> dpdk-mtu=9000
> dpdk-driver=/usr/lib/x86_64-linux-gnu/dpdk-17.11-drivers/
> dpdk-corelist=1,2,3
> dpdk-num-mbufs=4095
> dpdk-mbufs-cache-size=315
> [dpdk-mac=aa:bb:cc:dd:ee:f1]
> dpdk-io-cpu = 2
> dpdk-ipv4 = 192.168.10.1/24
> [dpdk-mac=aa:bb:cc:dd:ee:f2]
> dpdk-io-cpu = 3
> dpdk-ipv4 = 192.168.20.1/24
>
> Note that the IP and MAC need to be changed for your machine.
>
> Sam Reiter
> Ettus Research
>
> On Mon, Jan 6, 2020 at 3:29 PM Minutolo, Lorenzo <minutolo at caltech.edu>
> wrote:
>
> I' using:
>
> dpdk-procinfo -v
> EAL: Detected 16 lcore(s)
> EAL: RTE Version: '*DPDK 17.11.9'*
>
> Thanks,
> Lorenzo
> ------------------------------
> *From:* Sam Reiter <sam.reiter at ettus.com>
> *Sent:* Monday, January 6, 2020 8:27 AM
> *To:* Minutolo, Lorenzo <minutolo at caltech.edu>
> *Cc:* usrp-users at lists.ettus.com <usrp-users at lists.ettus.com>
> *Subject:* Re: [USRP-users] dpdk with x300
>
> Lorenzo,
>
> What version of DPDK are you using?
>
> Sam Reiter
> Ettus Research
>
> On Fri, Jan 3, 2020 at 8:20 PM Minutolo, Lorenzo via USRP-users <
> usrp-users at lists.ettus.com> wrote:
>
> Hi All,
> I'm using an x300 connected via a Intel X710 to a machine running Ubuntu
> 18.04. I'm using the recently released UHD 3.15 LTS.
> I'm trying to follow the guide to connect via dpdk. Everything in the
> guide on the Ettus website works however when launching uhd_usrp_probe (as
> sudo uhd_usrp_probe --args "address = 192.168.30.2, use_dpdk=1") I get the
> output reported in the output.png attachment. My actual dpdk-devbind.py
> --status is reported in status.png attachment as well as the uhd.conf I'm
> using.
>
> What am I doing wrong?
>
> In the configuration file I tried altering the cores to see if that was an
> issue but nothing changed.
>
> Thanks,
> Lorenzo
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