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[156.34.48.30]) by smtp.gmail.com with ESMTPSA id q20sm12653025qtn.80.2020.11.24.07.36.27 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 24 Nov 2020 07:36:27 -0800 (PST) Received: from jgg by mlx with local (Exim 4.94) (envelope-from ) id 1khaMk-000oqd-MW; Tue, 24 Nov 2020 11:36:26 -0400 Date: Tue, 24 Nov 2020 11:36:26 -0400 From: Jason Gunthorpe To: Daniel Vetter Cc: Jianxin Xiong , Leon Romanovsky , linux-rdma@vger.kernel.org, dri-devel@lists.freedesktop.org, Doug Ledford , Daniel Vetter , Christian Koenig Subject: Re: [PATCH rdma-core 3/5] pyverbs: Add dma-buf based MR support Message-ID: <20201124153626.GG5487@ziepe.ca> References: <1606153984-104583-1-git-send-email-jianxin.xiong@intel.com> <1606153984-104583-4-git-send-email-jianxin.xiong@intel.com> <20201123180504.GA244516@ziepe.ca> <20201124151658.GT401619@phenom.ffwll.local> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20201124151658.GT401619@phenom.ffwll.local> Precedence: bulk List-ID: X-Mailing-List: linux-rdma@vger.kernel.org On Tue, Nov 24, 2020 at 04:16:58PM +0100, Daniel Vetter wrote: > Compute is the worst, because opencl is widely considered a mistake (maybe > opencl 3 is better, but nvidia is stuck on 1.2). The actually used stuff is > cuda (nvidia-only), rocm (amd-only) and now with intel also playing we > have xe (intel-only). > It's pretty glorious :-/ I enjoyed how the Intel version of CUDA is called "OneAPI" not "Third API" ;) Hopefuly xe compute won't leave a lot of half finished abandoned kernel code like Xeon Phi did :( > Also I think we discussed this already, but for actual p2p the intel > patches aren't in upstream yet. We have some internally, but with very > broken locking (in the process of getting fixed up, but it's taking time). Someone needs to say this test works on a real system with an unpatched upstream driver. I thought AMD had the needed parts merged? Jason