From: Jason Gunthorpe <jgg@ziepe.ca>
To: Jesper Dangaard Brouer <jbrouer@redhat.com>
Cc: "Mina Almasry" <almasrymina@google.com>,
brouer@redhat.com, "Christian König" <christian.koenig@amd.com>,
"Hari Ramakrishnan" <rharix@google.com>,
"David Ahern" <dsahern@kernel.org>,
"Samiullah Khawaja" <skhawaja@google.com>,
"Willem de Bruijn" <willemb@google.com>,
"Jakub Kicinski" <kuba@kernel.org>,
"Christoph Hellwig" <hch@lst.de>,
"John Hubbard" <jhubbard@nvidia.com>,
"Dan Williams" <dan.j.williams@intel.com>,
"Alexander Duyck" <alexander.duyck@gmail.com>,
"Yunsheng Lin" <linyunsheng@huawei.com>,
davem@davemloft.net, pabeni@redhat.com, netdev@vger.kernel.org,
linux-kernel@vger.kernel.org,
"Lorenzo Bianconi" <lorenzo@kernel.org>,
"Yisen Zhuang" <yisen.zhuang@huawei.com>,
"Salil Mehta" <salil.mehta@huawei.com>,
"Eric Dumazet" <edumazet@google.com>,
"Sunil Goutham" <sgoutham@marvell.com>,
"Geetha sowjanya" <gakula@marvell.com>,
"Subbaraya Sundeep" <sbhatta@marvell.com>,
hariprasad <hkelam@marvell.com>,
"Saeed Mahameed" <saeedm@nvidia.com>,
"Leon Romanovsky" <leon@kernel.org>,
"Felix Fietkau" <nbd@nbd.name>,
"Ryder Lee" <ryder.lee@mediatek.com>,
"Shayne Chen" <shayne.chen@mediatek.com>,
"Sean Wang" <sean.wang@mediatek.com>,
"Kalle Valo" <kvalo@kernel.org>,
"Matthias Brugger" <matthias.bgg@gmail.com>,
"AngeloGioacchino Del Regno"
<angelogioacchino.delregno@collabora.com>,
"Jesper Dangaard Brouer" <hawk@kernel.org>,
"Ilias Apalodimas" <ilias.apalodimas@linaro.org>,
linux-rdma@vger.kernel.org, linux-wireless@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
linux-mediatek@lists.infradead.org,
"Jonathan Lemon" <jonathan.lemon@gmail.com>,
logang@deltatee.com, "Bjorn Helgaas" <bhelgaas@google.com>
Subject: Re: Memory providers multiplexing (Was: [PATCH net-next v4 4/5] page_pool: remove PP_FLAG_PAGE_FRAG flag)
Date: Mon, 24 Jul 2023 13:28:59 -0300 [thread overview]
Message-ID: <ZL6my550xedf/L0Z@ziepe.ca> (raw)
In-Reply-To: <a2569132-393e-0149-f76c-f6de282e1c96@redhat.com>
On Mon, Jul 24, 2023 at 04:56:27PM +0200, Jesper Dangaard Brouer wrote:
> These massive throughput numbers are important, because they *exceed*
> the physical host RAM/DIMM memory speeds.
That's right, this HW is all designed to use the high memory bandwidth
of the parallel GPUs. The CPU must not be involved in the data
movement.
If you look at the reference block diagrams for a DGX-H100 you can see
that the each GPU is directly wired to a 400Gb/s NIC, and there is
even software that allows the GPU to directly operate its attached
NIC interface.
Each of the 8 GPUs in the block diagram has 800 Gb/s full duplex RDMA,
and 7200 Gb/sec full duplex on the nvlink interconnect directly
connected to it.
The GPU is the center of all the interconnect in these systems.
Jason
next prev parent reply other threads:[~2023-07-24 16:29 UTC|newest]
Thread overview: 92+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-06-12 13:02 [PATCH net-next v4 0/5] introduce page_pool_alloc() API Yunsheng Lin
2023-06-12 13:02 ` [PATCH net-next v4 1/5] page_pool: frag API support for 32-bit arch with 64-bit DMA Yunsheng Lin
2023-06-13 13:30 ` Alexander Lobakin
2023-06-14 3:36 ` Yunsheng Lin
2023-06-14 3:55 ` Jakub Kicinski
2023-06-14 10:52 ` Alexander Lobakin
2023-06-14 12:15 ` Yunsheng Lin
2023-06-14 12:42 ` Alexander Lobakin
2023-06-14 4:09 ` Jakub Kicinski
2023-06-14 11:42 ` Yunsheng Lin
2023-06-14 17:07 ` Jakub Kicinski
2023-06-15 7:29 ` Yunsheng Lin
2023-06-12 13:02 ` [PATCH net-next v4 2/5] page_pool: unify frag_count handling in page_pool_is_last_frag() Yunsheng Lin
2023-06-14 4:33 ` Jakub Kicinski
2023-06-14 11:55 ` Yunsheng Lin
2023-06-12 13:02 ` [PATCH net-next v4 3/5] page_pool: introduce page_pool_alloc() API Yunsheng Lin
2023-06-13 13:08 ` Alexander Lobakin
2023-06-13 13:11 ` Alexander Lobakin
2023-06-14 3:17 ` Yunsheng Lin
2023-06-12 13:02 ` [PATCH net-next v4 4/5] page_pool: remove PP_FLAG_PAGE_FRAG flag Yunsheng Lin
2023-06-14 17:19 ` Jakub Kicinski
2023-06-15 7:17 ` Yunsheng Lin
2023-06-15 16:51 ` Jakub Kicinski
2023-06-15 18:26 ` Alexander Duyck
2023-06-16 12:20 ` Yunsheng Lin
2023-06-16 15:01 ` Alexander Duyck
2023-06-16 18:59 ` Jesper Dangaard Brouer
2023-06-16 19:21 ` Jakub Kicinski
2023-06-16 20:42 ` Memory providers multiplexing (Was: [PATCH net-next v4 4/5] page_pool: remove PP_FLAG_PAGE_FRAG flag) Jesper Dangaard Brouer
2023-06-19 18:07 ` Jakub Kicinski
2023-06-20 15:12 ` Jesper Dangaard Brouer
2023-06-20 15:39 ` Jakub Kicinski
2023-06-30 2:27 ` Mina Almasry
2023-07-03 4:20 ` David Ahern
2023-07-03 6:22 ` Mina Almasry
2023-07-03 14:45 ` David Ahern
2023-07-03 17:13 ` Eric Dumazet
2023-07-03 17:23 ` David Ahern
2023-07-06 1:19 ` Mina Almasry
2023-07-03 17:15 ` Eric Dumazet
2023-07-03 17:25 ` David Ahern
2023-07-03 21:43 ` Jason Gunthorpe
2023-07-06 1:17 ` Mina Almasry
2023-07-10 17:44 ` Jason Gunthorpe
2023-07-10 23:02 ` Mina Almasry
2023-07-10 23:49 ` Jason Gunthorpe
2023-07-11 0:45 ` Mina Almasry
2023-07-11 13:11 ` Jason Gunthorpe
2023-07-11 17:24 ` Mina Almasry
2023-07-11 4:27 ` Christoph Hellwig
2023-07-11 4:59 ` Jakub Kicinski
2023-07-11 5:04 ` Christoph Hellwig
2023-07-11 12:05 ` Jason Gunthorpe
2023-07-11 16:00 ` Jakub Kicinski
2023-07-11 16:20 ` David Ahern
2023-07-11 16:32 ` Jakub Kicinski
2023-07-11 17:06 ` Mina Almasry
2023-07-11 20:39 ` Jakub Kicinski
2023-07-11 21:39 ` David Ahern
2023-07-12 3:42 ` Mina Almasry
2023-07-12 7:55 ` Christian König
2023-07-12 13:03 ` Jason Gunthorpe
2023-07-12 13:35 ` Christian König
2023-07-12 22:41 ` Mina Almasry
2023-07-12 13:01 ` Jason Gunthorpe
2023-07-12 20:16 ` Mina Almasry
2023-07-12 23:57 ` Jason Gunthorpe
2023-07-13 7:56 ` Christian König
2023-07-14 14:55 ` Mina Almasry
2023-07-14 15:18 ` David Ahern
2023-07-17 2:05 ` Mina Almasry
2023-07-17 3:08 ` David Ahern
2023-07-14 15:55 ` Jason Gunthorpe
2023-07-17 1:53 ` Mina Almasry
2023-07-24 14:56 ` Jesper Dangaard Brouer
2023-07-24 16:28 ` Jason Gunthorpe [this message]
2023-07-25 4:04 ` Mina Almasry
2023-07-26 17:36 ` Jesper Dangaard Brouer
2023-07-11 16:42 ` Jason Gunthorpe
2023-07-11 17:06 ` Jakub Kicinski
2023-07-11 18:52 ` Jason Gunthorpe
2023-07-11 20:34 ` Jakub Kicinski
2023-07-11 23:56 ` Jason Gunthorpe
2023-07-11 6:52 ` Dan Williams
2023-07-06 16:50 ` Jakub Kicinski
2023-06-17 12:19 ` [PATCH net-next v4 4/5] page_pool: remove PP_FLAG_PAGE_FRAG flag Yunsheng Lin
2023-06-15 13:59 ` Alexander Lobakin
2023-06-12 13:02 ` [PATCH net-next v4 5/5] page_pool: update document about frag API Yunsheng Lin
2023-06-14 4:40 ` Jakub Kicinski
2023-06-14 12:04 ` Yunsheng Lin
2023-06-14 16:56 ` Jakub Kicinski
2023-06-15 6:49 ` Yunsheng Lin
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=ZL6my550xedf/L0Z@ziepe.ca \
--to=jgg@ziepe.ca \
--cc=alexander.duyck@gmail.com \
--cc=almasrymina@google.com \
--cc=angelogioacchino.delregno@collabora.com \
--cc=bhelgaas@google.com \
--cc=brouer@redhat.com \
--cc=christian.koenig@amd.com \
--cc=dan.j.williams@intel.com \
--cc=davem@davemloft.net \
--cc=dsahern@kernel.org \
--cc=edumazet@google.com \
--cc=gakula@marvell.com \
--cc=hawk@kernel.org \
--cc=hch@lst.de \
--cc=hkelam@marvell.com \
--cc=ilias.apalodimas@linaro.org \
--cc=jbrouer@redhat.com \
--cc=jhubbard@nvidia.com \
--cc=jonathan.lemon@gmail.com \
--cc=kuba@kernel.org \
--cc=kvalo@kernel.org \
--cc=leon@kernel.org \
--cc=linux-arm-kernel@lists.infradead.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mediatek@lists.infradead.org \
--cc=linux-rdma@vger.kernel.org \
--cc=linux-wireless@vger.kernel.org \
--cc=linyunsheng@huawei.com \
--cc=logang@deltatee.com \
--cc=lorenzo@kernel.org \
--cc=matthias.bgg@gmail.com \
--cc=nbd@nbd.name \
--cc=netdev@vger.kernel.org \
--cc=pabeni@redhat.com \
--cc=rharix@google.com \
--cc=ryder.lee@mediatek.com \
--cc=saeedm@nvidia.com \
--cc=salil.mehta@huawei.com \
--cc=sbhatta@marvell.com \
--cc=sean.wang@mediatek.com \
--cc=sgoutham@marvell.com \
--cc=shayne.chen@mediatek.com \
--cc=skhawaja@google.com \
--cc=willemb@google.com \
--cc=yisen.zhuang@huawei.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).