Re: [dpdk-ci] [dpdklab] RE: Compiling dpdk in non compilation tests

[Brandon Lo <blo@iol.unh.edu>]

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Hi everyone,

Thank you for submitting.
I have started a bug ticket for this so we can track it:
https://bugs.dpdk.org/show_bug.cgi?id=566

Thanks,
Brandon

On Tue, Oct 27, 2020 at 5:17 AM Richardson, Bruce <
bruce.richardson@intel.com> wrote:

>
>
> > -----Original Message-----
> > From: David Marchand <david.marchand@redhat.com>
> > Sent: Sunday, October 25, 2020 8:36 AM
> > To: dpdklab@iol.unh.edu; Lincoln Lavoie <lylavoie@iol.unh.edu>
> > Cc: ci@dpdk.org; Thomas Monjalon <thomas@monjalon.net>; Richardson,
> Bruce
> > <bruce.richardson@intel.com>
> > Subject: Compiling dpdk in non compilation tests
> >
> > Looking at CI reports this morning, I noticed this on the series "ice:
> > update base code".
> >
> > https://lab.dpdk.org/results/dashboard/patchsets/13992/
> >
> > - Compilation is failing on OpenSuse, but I think this is because its
> > toolchain does not have AVX512 support.
> > This seems to be a regression introduced by the series, indeed, cool.
> >
> >
> > - On Ubuntu 18.04, build is fine, but unit tests are ko.
> > Looking into the unit tests zipped logs, I can see that:
> > * the unit tests job builds its own binaries,
> > * the unit tests environment is not the same as the build test
> > environment (only copying significant differences below):
> >
> > Build:
> > The Meson build system
> > Version: 0.55.3
> > ...
> > C compiler for the host machine: cc (gcc 7.5.0 "cc (Ubuntu
> > 7.5.0-3ubuntu1~18.04) 7.5.0")
> > C linker for the host machine: cc ld.bfd 2.30
> > ...
> > Run-time dependency libpcap found: YES 1.8.1
> > Has header "pcap.h" with dependency libpcap: YES
> > ...
> > Fetching value of define "__AVX2__" : 1
> > Fetching value of define "__AVX512BW__" : 1
> > Fetching value of define "__AVX512CD__" : 1
> > Fetching value of define "__AVX512DQ__" : 1
> > Fetching value of define "__AVX512F__" : 1
> > Fetching value of define "__AVX512VL__" : 1
> > ...
> > Run-time dependency jansson found: YES 2.11
> > ...
> >
> > vs
> >
> > Unit tests:
> > The Meson build system
> > Version: 0.53.1
> > ...
> > C compiler for the host machine: cc (gcc 7.5.0 "cc (Ubuntu
> > 7.5.0-3ubuntu1~18.04) 7.5.0")
> > C linker for the host machine: cc GNU ld.bfd 2.30
> > ...
> > Run-time dependency libpcap found: NO (tried pkgconfig)
> > Library pcap found: NO
> > ...
> > Fetching value of define "__AVX2__" :
> > Fetching value of define "__AVX512BW__" :
> > Fetching value of define "__AVX512CD__" :
> > Fetching value of define "__AVX512DQ__" :
> > Fetching value of define "__AVX512F__" :
> > Fetching value of define "__AVX512VL__" :
> > ...
> > Run-time dependency jansson found: NO (tried pkgconfig and cmake)
> > ...
> >
> >
> > The Unit tests env does not have a AVX512 enabled toolchain, or
> > something in meson disables it, hence the compilation fails and the
> > unit tests are marked as failed while it has nothing to do with
> > functional tests.
> >
>
> FYI: The original release of Ubuntu 18.04 had broken AVX-512 support
> in binutils. However, the fix for that issue has recently been
> backported to 18.04, so running "apt-get update && apt-get upgrade"
> should fix that support.
>
> /Bruce
>
> PS: Yes, I'm old-skool and use apt-get rather than just "apt". I
> don't like how plain apt does fancy things with the terminal for
> the progress bar! 😊
>


-- 

Brandon Lo

UNH InterOperability Laboratory

21 Madbury Rd, Suite 100, Durham, NH 03824

blo@iol.unh.edu

www.iol.unh.edu

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