Hi all,
It looks like the problem caused by the lack of _mm512_set1_epi8()
implementation inside the gcc8, however _mm512_set1_epi[16,32,64] has
been implemented.
I replaced it with _mm512_set1_epi32 and on gcc8 it builds fine. I'll
send a fix soon.
On 09/11/2021 17:22, Lance Richardson wrote:
Based on the CI build logs, the target architecture was Skylake, which
supports AVX512 but doesn't support GFNI.
On Tue, Nov 9, 2021 at 11:15 AM Thomas Monjalon <tho...@monjalon.net> wrote:
09/11/2021 17:12, Lance Richardson:
Do the machines used for the CentOS 8 CI builds support AVX512?
Probably not. OK thank you.
The failing build is on an Ice Lake server with:
meson -Dmachine=native build
ninja -C build
On Tue, Nov 9, 2021 at 11:08 AM Thomas Monjalon <tho...@monjalon.net> wrote:
09/11/2021 16:57, David Marchand:
On Tue, Nov 9, 2021 at 4:53 PM Lance Richardson
<lance.richard...@broadcom.com> wrote:
21.11-rc2 builds are failing on CentOS 8.4, apparently because
the intrinsic _mm512_set_epi8() is not defined in the GCC
headers (see example below).
Thanks for reporting Lance.
It rings a bell, think it was mentionned in the past.
CI compilation was passing:
http://mails.dpdk.org/archives/test-report/2021-November/238534.html
I would like to better understand.
[...]
Here is a GCC patch to add this intrinsic:
https://www.mail-archive.com/gcc-patches@gcc.gnu.org/msg188664.html
BTW, GCC 10.2.1 (via "scl enable gcc-toolset-10") is able to build
21.11-rc2 successfully on CentOS 8.4.
Lance
# gcc --version
gcc (GCC) 8.4.1 20200928 (Red Hat 8.4.1-1)
[...]
../lib/hash/rte_thash_x86_gfni.h:59:24: error: implicit declaration of
function ‘_mm512_set_epi8’; did you mean ‘_mm512_set1_epi8’?
What is different in your setup compared to the CI?
--
Regards,
Vladimir
