From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mails.dpdk.org (mails.dpdk.org [217.70.189.124]) by inbox.dpdk.org (Postfix) with ESMTP id F37844617B; Mon, 3 Feb 2025 05:33:29 +0100 (CET) Received: from mails.dpdk.org (localhost [127.0.0.1]) by mails.dpdk.org (Postfix) with ESMTP id 957A240DD3; Mon, 3 Feb 2025 05:33:29 +0100 (CET) Received: from inbox.dpdk.org (inbox.dpdk.org [95.142.172.178]) by mails.dpdk.org (Postfix) with ESMTP id A909540287 for ; Mon, 3 Feb 2025 05:33:27 +0100 (CET) Received: by inbox.dpdk.org (Postfix, from userid 33) id A24274617C; Mon, 3 Feb 2025 05:33:27 +0100 (CET) From: bugzilla@dpdk.org To: dev@dpdk.org Subject: [DPDK/other Bug 1656] AVX-512 support disabled Date: Mon, 03 Feb 2025 04:33:27 +0000 X-Bugzilla-Reason: AssignedTo X-Bugzilla-Type: new X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: DPDK X-Bugzilla-Component: other X-Bugzilla-Version: 18.11 X-Bugzilla-Keywords: X-Bugzilla-Severity: normal X-Bugzilla-Who: nandinipersad361@gmail.com X-Bugzilla-Status: UNCONFIRMED X-Bugzilla-Resolution: X-Bugzilla-Priority: Normal X-Bugzilla-Assigned-To: dev@dpdk.org X-Bugzilla-Target-Milestone: --- X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: bug_id short_desc product version rep_platform op_sys bug_status bug_severity priority component assigned_to reporter target_milestone Message-ID: Content-Type: multipart/alternative; boundary=17385572070.9497f7.2170417 Content-Transfer-Encoding: 7bit X-Bugzilla-URL: http://bugs.dpdk.org/ Auto-Submitted: auto-generated X-Auto-Response-Suppress: All MIME-Version: 1.0 X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org --17385572070.9497f7.2170417 Date: Mon, 3 Feb 2025 05:33:27 +0100 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: http://bugs.dpdk.org/ Auto-Submitted: auto-generated X-Auto-Response-Suppress: All https://bugs.dpdk.org/show_bug.cgi?id=3D1656 Bug ID: 1656 Summary: AVX-512 support disabled Product: DPDK Version: 18.11 Hardware: All OS: Other Status: UNCONFIRMED Severity: normal Priority: Normal Component: other Assignee: dev@dpdk.org Reporter: nandinipersad361@gmail.com Target Milestone: --- AVX-512 support has been disabled on some conditions. On DPDK v18.11 AVX-512 is disabled for all GCC builds which reported to cau= se a performance drop. On DPDK v19.02 AVX-512 disable scope is reduced to GCC and binutils version 2.30 based on information accrued from the GCC community defect. Reason: Generated AVX-512 code cause crash: https://bugs.dpdk.org/show_bug.cgi?id= =3D97 https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D88096 Resolution/Workaround: Update binutils to newer version than 2.30. OR Use different compiler, like clang for this case. Affected Environment/Platform: GCC and binutils version 2.30. Driver/Module: ALL. --=20 You are receiving this mail because: You are the assignee for the bug.= --17385572070.9497f7.2170417 Date: Mon, 3 Feb 2025 05:33:27 +0100 MIME-Version: 1.0 Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: http://bugs.dpdk.org/ Auto-Submitted: auto-generated X-Auto-Response-Suppress: All

Bug ID	1656
Summary	AVX-512 support disabled
Product	DPDK
Version	18.11
Hardware	All
OS	Other
Status	UNCONFIRMED
Severity	normal
Priority	Normal
Component	other
Assignee	dev@dpdk.org
Reporter	nandinipersad361@gmail.com
Target Milestone	---

AVX-512 support has been disabled =
on some conditions.

On DPDK v18.11 AVX-512 is disabled for all GCC builds which reported to cau=
se a
performance drop.

On DPDK v19.02 AVX-512 disable scope is reduced to GCC and binutils version
2.30 based on information accrued from the GCC community defect.

Reason:
Generated AVX-512 code cause crash: https://bugs.dpdk.org/show_bug.cgi?id=3D97
https://gc=
c.gnu.org/bugzilla/show_bug.cgi?id=3D88096

Resolution/Workaround:
Update binutils to newer version than 2.30.

OR

Use different compiler, like clang for this case.

Affected Environment/Platform:
GCC and binutils version 2.30.

Driver/Module:
ALL.

You are receiving this mail because:

You are the assignee for the bug.

=20=20=20=20=20=20=20=20=20=20

= --17385572070.9497f7.2170417--