From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 48) id C0C4A38515F9; Wed, 26 Jan 2022 12:19:00 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org C0C4A38515F9 From: "vries at gcc dot gnu.org" To: gcc-bugs@gcc.gnu.org Subject: [Bug target/99932] OpenACC/nvptx offloading execution regressions starting with CUDA 11.2-era Nvidia Driver 460.27.04 Date: Wed, 26 Jan 2022 12:19:00 +0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: gcc X-Bugzilla-Component: target X-Bugzilla-Version: 11.0 X-Bugzilla-Keywords: openacc X-Bugzilla-Severity: normal X-Bugzilla-Who: vries at gcc dot gnu.org X-Bugzilla-Status: UNCONFIRMED X-Bugzilla-Resolution: X-Bugzilla-Priority: P3 X-Bugzilla-Assigned-To: unassigned at gcc dot gnu.org X-Bugzilla-Target-Milestone: --- X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: Message-ID: In-Reply-To: References: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: http://gcc.gnu.org/bugzilla/ Auto-Submitted: auto-generated MIME-Version: 1.0 X-BeenThere: gcc-bugs@gcc.gnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Gcc-bugs mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 26 Jan 2022 12:19:00 -0000 https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D99932 --- Comment #14 from Tom de Vries --- An observation when playing around with vector-length-128-4.c: there are two ways in which I can make the example pass. 1. add barrier.sync.aligned 0 or membar.cta after first broad-cast receive 2. unroll loop in first broad-cast send. At first glance, it doesn't look entirely trivial though to implement eithe= r.=