On Fri, Apr 09, 2021 at 02:15:04PM +0000, Wiles, Keith wrote: > > > > On Apr 8, 2021, at 7:08 PM, Narcisa Ana Maria Vasile > > <narcisa.vas...@microsoft.com> wrote: > > > > Thanks for the quick reply! Just to clarify, the libmlx4 doesn't get > > installed when installing the latest Mellanox drivers. > > Instead, the libmlx5 is installed, which I believe is the right one to use > > with Cx5s. > > > > It looks like pktgen needs libmlx4 to run, so does this mean that it is > > only working with older Mellanox tools and NICs? > > I could try install the libmlx4, but my understanding was that libmlx4 is > > for Cx3s and libmlx5 is for Cx4s and Cx5s. > > Pktgen has no requirement to work with any mlx library or hardware for that > matter. I do not know what this problem is, but I believe it is not a Pktgen > problem. Did you try with testpmd or any of the DPDK examples. If they work > with mlx then I can look at why Pktgen does not work in this case. If > anything the libmlx5 is referencing the mlx4 library for some reason and when > you added the mlx5 PMD it also needed the mlx4. > Sure, I understand it's not required to work with any of these HW or libs. I thought I'd ask in case someone in the community tested with a similar setup and can confirm whether it works or not. If someone has it working, then it's probably a misconfiguration on my side, alternatively if it's known that this is an unsupported setup I can stop investigating.
> BTW, notice the error message states "EAL: libmlx4.so.1: cannot open shared > object file: No such file or directory” EAL Is DPDK initialization not Pktgen. That's right, it looks like it's required by EAL. However, I am able to run testpmd successfully. I've also tried l2fwd successfully. Still, this doesn't necessarily mean the issue is Pktgen-related, that's why I wanted to verify here. > > > > -----Original Message----- > > From: Wiles, Keith <keith.wi...@intel.com> > > Sent: Thursday, April 8, 2021 2:12 PM > > To: Narcisa Ana Maria Vasile <narcisa.vas...@microsoft.com> > > Cc: users@dpdk.org; Kevin Daniel (WIPRO LIMITED) <v-kev...@microsoft.com>; > > Omar Cardona <ocard...@microsoft.com> > > Subject: [EXTERNAL] Re: Running Pktgen with Mellanox CX5 > > > > > > > >> On Apr 8, 2021, at 1:47 PM, Narcisa Ana Maria Vasile > >> <narcisa.vas...@microsoft.com> wrote: > >> > >> Hi, > >> > >> I’m trying to run pktgen (latest ‘master’ branch) with a Mellanox CX5 NIC > >> on Ubuntu 20.04. > >> I’ve installed the latest Mellanox drivers > >> (MLNX_OFED_LINUX-5.3-1.0.0.1-ubuntu20.04-x86_64.iso). > >> I’ve compiled and installed DPDK successfully (latest ‘main’ branch). > >> > >> As you can see below, I’m getting an error message saying “libmlx4.so.1: > >> cannot open shared object file: No such file or directory”. > >> I am able to run other DPDK applications such as ‘testpmd’. > >> > >> Is pktgen supported with the latest Mellanox drivers on CX5? Thank you! > >> > >> -------------- > >> pktgen -l 1,3,5 -a 04:00.0 -d librte_net_mlx5.so -- -P -m "[3:5].0" -T > >> > >> Copyright(c) <2010-2021>, Intel Corporation. All rights reserved. Powered > >> by DPDK > >> EAL: Detected 20 lcore(s) > >> EAL: Detected 2 NUMA nodes > >> EAL: Detected shared linkage of DPDK > >> EAL: libmlx4.so.1: cannot open shared object file: No such file or > >> directory > >> EAL: FATAL: Cannot init plugins > >> EAL: Cannot init plugins > > > > I have not built anything with mlx in a long time. My guess is the > > libmix4.so.1 is not located in a place the system can pick up. Maybe you > > need to set LD_LIBRARY_PATH to the path where this library is located. I > > see you included the DPDK PMD, but you still need to tell applications > > where to locate the library. Another option is to add it to the > > /etc/ld.so.conf.d/ file or use pkg-config to locate the libs may help too. > > In some cases external packages do not store the libs in a standard place > > for ldconfig to locate or the package does not provide ldconfig > > configuration files. > >> > >> Thank you, > >> Narcisa V. > > >
