{"id":1336,"date":"2023-06-04T11:05:11","date_gmt":"2023-06-04T10:05:11","guid":{"rendered":"https:\/\/blog.thomarite.uk\/?p=1336"},"modified":"2023-06-04T11:05:38","modified_gmt":"2023-06-04T10:05:38","slug":"ai-supercomputer-nvlink","status":"publish","type":"post","link":"https:\/\/blog.thomarite.uk\/index.php\/2023\/06\/04\/ai-supercomputer-nvlink\/","title":{"rendered":"AI Supercomputer &#8211; NVLink"},"content":{"rendered":"\n<p>So NVIDIA has an AI supercomputer via <a href=\"https:\/\/nvidianews.nvidia.com\/news\/nvidia-announces-dgx-gh200-ai-supercomputer\">this<\/a>. Meta, Google and MS making comments about it. And based on <a href=\"https:\/\/www.theregister.com\/2023\/05\/29\/nvidia_dgx_gh200_nvlink\/\">this<\/a>, it is a 24 racks setup using 900GBps NVLink-C2C interface, so no ethernet and no infiniband. <a href=\"https:\/\/developer.nvidia.com\/blog\/announcing-nvidia-dgx-gh200-first-100-terabyte-gpu-memory-system\/\">Here<\/a>, there is a bit more info about NVLink:<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">NVLink Switch System forms a two-level, non-blocking, fat-tree NVLink fabric to fully connect 256 Grace Hopper Superchips in a DGX GH200 system. Every GPU in DGX GH200 can access the memory of other GPUs and extended GPU memory of all NVIDIA Grace CPUs at 900 GBps. <\/pre>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"555\" src=\"https:\/\/blog.thomarite.uk\/wp-content\/uploads\/2023\/06\/image-2-1024x555.png\" alt=\"\" class=\"wp-image-1337\" srcset=\"https:\/\/blog.thomarite.uk\/wp-content\/uploads\/2023\/06\/image-2-1024x555.png 1024w, https:\/\/blog.thomarite.uk\/wp-content\/uploads\/2023\/06\/image-2-300x163.png 300w, https:\/\/blog.thomarite.uk\/wp-content\/uploads\/2023\/06\/image-2-768x416.png 768w, https:\/\/blog.thomarite.uk\/wp-content\/uploads\/2023\/06\/image-2-1200x650.png 1200w, https:\/\/blog.thomarite.uk\/wp-content\/uploads\/2023\/06\/image-2.png 1421w\" sizes=\"auto, (max-width: 709px) 85vw, (max-width: 909px) 67vw, (max-width: 1362px) 62vw, 840px\" \/><\/figure>\n\n\n\n<p><\/p>\n\n\n\n<p>This is the official page for <a href=\"https:\/\/www.nvidia.com\/en-us\/data-center\/nvlink\/\">NVlink<\/a> but only with the above I understood this is like a &#8220;new&#8221; switching infrastructure.<\/p>\n\n\n\n<p>But looks like if you want to connect up those supercomputers, you need to use infiniband. And again power\/cooling is a important subject.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>So NVIDIA has an AI supercomputer via this. Meta, Google and MS making comments about it. And based on this, it is a 24 racks setup using 900GBps NVLink-C2C interface, so no ethernet and no infiniband. Here, there is a bit more info about NVLink: NVLink Switch System forms a two-level, non-blocking, fat-tree NVLink fabric &hellip; <a href=\"https:\/\/blog.thomarite.uk\/index.php\/2023\/06\/04\/ai-supercomputer-nvlink\/\" class=\"more-link\">Continue reading<span class=\"screen-reader-text\"> &#8220;AI Supercomputer &#8211; NVLink&#8221;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[32,2],"tags":[],"class_list":["post-1336","post","type-post","status-publish","format-standard","hentry","category-cpu","category-networks"],"_links":{"self":[{"href":"https:\/\/blog.thomarite.uk\/index.php\/wp-json\/wp\/v2\/posts\/1336","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blog.thomarite.uk\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog.thomarite.uk\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blog.thomarite.uk\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.thomarite.uk\/index.php\/wp-json\/wp\/v2\/comments?post=1336"}],"version-history":[{"count":1,"href":"https:\/\/blog.thomarite.uk\/index.php\/wp-json\/wp\/v2\/posts\/1336\/revisions"}],"predecessor-version":[{"id":1338,"href":"https:\/\/blog.thomarite.uk\/index.php\/wp-json\/wp\/v2\/posts\/1336\/revisions\/1338"}],"wp:attachment":[{"href":"https:\/\/blog.thomarite.uk\/index.php\/wp-json\/wp\/v2\/media?parent=1336"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.thomarite.uk\/index.php\/wp-json\/wp\/v2\/categories?post=1336"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.thomarite.uk\/index.php\/wp-json\/wp\/v2\/tags?post=1336"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}