Re: [dpdk-users] Trouble Building DPDK with MLNX OFED(4.4) Works with 5.0

[Thomas Monjalon <thomas@monjalon.net>]

06/06/2020 22:54, Vineeth Thapeta:
> Hi Thomas,
> 
> We want to use TAS which is built on top of DPDK,

Do you have a link to TAS? I don't know it.

> I installed Mellanox OFED 5.0 and TAS and everything was good,
> until we had to install Moogen.

So your only issue is to install Moongen,
given you already have DPDK working.

> Please find my answer to your questions.
> Thanks for the prompt reply. I appreciate it.
> 
> We are using Ubuntu 18.04. I indeed had success in installing dpdk 19.11
> LTS with MLNX_OFED 5.0. To answer your questions about Moongen either
> requires 1) Complete OFED drivers or 2) libibverbs, libmlx5,
> mlnx-ofed-kernel packages,

No, Moongen requires only DPDK.
If I am wrong, please could you show where you found such info?

> These packages are installed with MLNX_ofed
> drivers if I am not mistaken.

Installing the Ubuntu package rdma-core should be enough.

> So I moved on to build Moongen, When building
> moongen with OFED 5.0 I get the error fatal error: infiniband/mlx5_hw.h: No
> such file or directory #include <infiniband/mlx5_hw.h>. I thought this
> might be related to the libmlx5 and I installed libmlx5.deb from the
> packages in the DEBS/ folder. testpmd stops working with this prompt
> ./testpmd: /usr/lib/libmlx5.so.1: no version information available
> (required by ./testpmd). So I tried rolling back the OFED version to 4.4,
> which has caused problems with building dpdk with version 19.11 LTS,18.11
> LTS and 17.11 LTS as I shared in the previous mail.

You are mixing different versions of drivers.
Choose either rdma-core packaged in Ubuntu,
or OFED from mellanox.com.


> I hope this answers your questions.
> 
> Vineeth
> 
> On Sat, Jun 6, 2020 at 3:13 PM Thomas Monjalon <thomas@monjalon.net> wrote:
> 
> > Hi,
> >
> > 06/06/2020 21:43, Vineeth Thapeta:
> > > Hi guys,
> > >
> > > I had to roll back OFED version from 5.0 to 4.4 because another library
> > > Moongen has trouble building with OFED 5.0.
> >
> > How Moongen is related to OFED?
> > Why using OFED and not upstream packaging of rdma-core?
> > Which distribution are you using?
> >
> > > I rolled back the version and
> > > Moongen builds and when I try to build dpdk 18.11, 19.11,17.11. All the
> > > three builds fail with the following error (
> > https://pastebin.com/fiw7iz1Z
> > > Link of build error). Does anyone know why this happens.
> >
> > Any DPDK version should build with any version of OFED or rdma-core.
> > Note: DPDK 17.11 is not supported anymore.
> >
> > > I am exhausted
> > > with roll backs,if anyone can help me with this I would be grateful. , By
> > > the looks of it, it might mean it had problems with the OFED driver? I
> > > installed the MLNX ofed driver without any flags, i.e ./mlnxofedinstall.
> > If
> > > you want any further information,please let me know. Any suggestion would
> > > be appreciated, even if you don't think it might work. I have been trying
> > > to install these two for the past week, without much success. Are the
> > above
> > > mentioned DPDK version not compatible with said driver(4.4)?
> >
> > Let's focus on your goal and see what is the real issue you hit.
> > Which version of DPDK do you need?
> > Why not start with the latest LTS, which is 19.11?