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[96.67.55.147]) by mx.google.com with ESMTPS id c32si251326qtc.169.2019.02.21.10.24.58 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Thu, 21 Feb 2019 10:24:58 -0800 (PST) Received-SPF: pass (google.com: best guess record for domain of riel@shelob.surriel.com designates 96.67.55.147 as permitted sender) client-ip=96.67.55.147; Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of riel@shelob.surriel.com designates 96.67.55.147 as permitted sender) smtp.mailfrom=riel@shelob.surriel.com Received: from imladris.surriel.com ([96.67.55.152]) by shelob.surriel.com with esmtpsa (TLSv1.2:ECDHE-RSA-AES256-GCM-SHA384:256) (Exim 4.91) (envelope-from ) id 1gwt1m-0001IZ-Ap; Thu, 21 Feb 2019 13:24:58 -0500 Message-ID: <3057d2336e88897309756a9c0e10727856589965.camel@surriel.com> Subject: Re: [Lsf-pc] Memory management facing a 400Gpbs network link From: Rik van Riel To: Christopher Lameter , Michal Hocko Cc: linux-mm@kvack.org, lsf-pc@lists.linux-foundation.org Date: Thu, 21 Feb 2019 13:24:57 -0500 In-Reply-To: <010001691144c94b-c935fd1d-9c90-40a5-9763-2c05ef0df7f4-000000@email.amazonses.com> References: <01000168e2f54113-485312aa-7e08-4963-af92-803f8c7d21e6-000000@email.amazonses.com> <20190219122609.GN4525@dhcp22.suse.cz> <01000169062262ea-777bfd38-e0f9-4e9c-806f-1c64e507ea2c-000000@email.amazonses.com> <20190219173622.GQ4525@dhcp22.suse.cz> <0100016906fdc80b-4471de43-3f22-45ec-8f77-f2ff1b76d9fe-000000@email.amazonses.com> <20190219191325.GS4525@dhcp22.suse.cz> <0100016907829c4c-7593c8e2-1e01-4be4-8eec-a8aa3de00c18-000000@email.amazonses.com> <20190220083157.GV4525@dhcp22.suse.cz> <010001691144c94b-c935fd1d-9c90-40a5-9763-2c05ef0df7f4-000000@email.amazonses.com> Content-Type: multipart/signed; micalg="pgp-sha256"; protocol="application/pgp-signature"; boundary="=-cM7bD1nFXBXadBEnK7oO" X-Mailer: Evolution 3.28.5 (3.28.5-1.fc28) Mime-Version: 1.0 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: --=-cM7bD1nFXBXadBEnK7oO Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable On Thu, 2019-02-21 at 18:15 +0000, Christopher Lameter wrote: > B) Provide fast memory in the NIC >=20 > Since the NIC is at capacity limits when it comes to pushing data > from the NIC into memory the obvious solution is to not go to main > memory but provide faster on NIC memory that can then be accessed > from the host as needed. Now the applications creates I/O > bottlenecks > when accessing their data or they need to implement complicated > transfer mechanisms to retrieve and store data onto the NIC > memory. Don't Intel and AMD both have High Bandwidth Memory available? Is it possible to place your network buffer in HBM, and process the data from there? --=20 All Rights Reversed. --=-cM7bD1nFXBXadBEnK7oO Content-Type: application/pgp-signature; name="signature.asc" Content-Description: This is a digitally signed message part Content-Transfer-Encoding: 7bit -----BEGIN PGP SIGNATURE----- iQEzBAABCAAdFiEEKR73pCCtJ5Xj3yADznnekoTE3oMFAlxu7PoACgkQznnekoTE 3oMKBwf/Vuaa+Er8IEtq9p3gu8N/rkg1G6f+4aqOD0vr1fEER4lEWBaB7hwI1pzg Ho/EwTNhnR6/9d1NhFBDNld2VyLZA/7VMh5MCBT13U2VKKe8njReZLJGinpkNZKl i4d0Uvv0AGD01MeuTv6LpEzxVthEsxJN2qtR9w0r+m3DggKTxe8riBwWM0dh6V7i xpqAAZQ6PwFLgs+AKzSpy+wp82XDJsKwF5ZjkNrw7KNC9H2qwyP6NGC25OHFtSYk EBD6KBirQVzYJTyuPAoVOUnjoioIO8lecq+OMLIr0g004yePCAU+nm4uJ3HFIjhN fEPd0JiN3MK7j3a8n4AiG5r3i2UR7Q== =33Hu -----END PGP SIGNATURE----- --=-cM7bD1nFXBXadBEnK7oO--