{"id":18965,"date":"2025-03-27T14:23:23","date_gmt":"2025-03-27T06:23:23","guid":{"rendered":"https:\/\/www.varidata.com\/uncategorized-zh-cn\/server-cpu-gpu-interconnect-tech-and-bandwidth-calculation\/"},"modified":"2025-03-27T14:30:17","modified_gmt":"2025-03-27T06:30:17","slug":"server-cpu-gpu-interconnect-tech-and-bandwidth-calculation","status":"publish","type":"post","link":"https:\/\/www.varidata.com\/zh-cn\/knowledge\/server-cpu-gpu-interconnect-tech-and-bandwidth-calculation\/","title":{"rendered":"\u670d\u52a1\u5668\u5185\u90e8CPU&#038;GPU\u4e92\u8054\u6280\u672f\u548c\u5e26\u5bbd\u8ba1\u7b97\u65b9\u5f0f"},"content":{"rendered":"<p>\u73b0\u4ee3\u8ba1\u7b97\u57fa\u7840\u8bbe\u65bd\u7684\u53d1\u5c55\uff0c\u7279\u522b\u662f\u5728<a href=\"https:\/\/www.varidata.com\/zh-cn\/server\/hk\/cn2\/\" target=\"_blank\">\u9999\u6e2f\u670d\u52a1\u5668\u79df\u7528<\/a>\u73af\u5883\u4e2d\uff0c\u8ba9\u670d\u52a1\u5668CPU\u548cGPU\u4e92\u8054\u6280\u672f\u5907\u53d7\u5173\u6ce8\u3002\u8fd9\u4e9b\u590d\u6742\u7684\u901a\u4fe1\u8def\u5f84\u51b3\u5b9a\u4e86\u9ad8\u7aef\u8ba1\u7b97\u7cfb\u7edf\u7684\u6027\u80fd\u4e0a\u9650\uff0c\u5c24\u5176\u662f\u5728\u6570\u636e\u5bc6\u96c6\u578b\u5e94\u7528\u548cAI\u5de5\u4f5c\u8d1f\u8f7d\u65b9\u9762\u3002<\/p>\n<p>\u5728\u9999\u6e2f\u5145\u6ee1\u6d3b\u529b\u7684\u6570\u636e\u4e2d\u5fc3\u73af\u5883\u4e2d\uff0c\u91d1\u878d\u673a\u6784\u548c\u79d1\u6280\u516c\u53f8\u5bf9\u524d\u6240\u672a\u6709\u7684\u8ba1\u7b97\u80fd\u529b\u63d0\u51fa\u4e86\u66f4\u9ad8\u8981\u6c42\uff0cCPU\u548cGPU\u4e4b\u95f4\u7684\u4e92\u8054\u67b6\u6784\u5df2\u6210\u4e3a\u7cfb\u7edf\u6027\u80fd\u7684\u5173\u952e\u5dee\u5f02\u5316\u56e0\u7d20\u3002\u4f5c\u4e3a\u91d1\u878d\u4e2d\u5fc3\uff0c\u9999\u6e2f\u9700\u8981\u80fd\u591f\u5904\u7406\u6d77\u91cf\u6570\u636e\u541e\u5410\u91cf\u7684\u8d85\u4f4e\u5ef6\u8fdf\u89e3\u51b3\u65b9\u6848\uff0c\u540c\u65f6\u5728\u5cf0\u503c\u8d1f\u8f7d\u4e0b\u4fdd\u6301\u7a33\u5b9a\u6027\u80fd\u3002<\/p>\n<h2><strong>\u7406\u89e3\u670d\u52a1\u5668\u4e92\u8054\u57fa\u7840<\/strong><\/h2>\n<p>\u8ba1\u7b97\u57fa\u7840\u8bbe\u65bd\u5df2\u7ecf\u53d1\u5c55\u8d85\u8d8a\u4e86\u7b80\u5355\u7684CPU\u4e2d\u5fc3\u67b6\u6784\u3002\u73b0\u4ee3\u670d\u52a1\u5668\uff0c\u5c24\u5176\u662f\u90e8\u7f72\u5728\u9999\u6e2f\u5c16\u7aef\u6570\u636e\u4e2d\u5fc3\u7684\u670d\u52a1\u5668\uff0c\u5229\u7528\u590d\u6742\u7684\u4e92\u8054\u6280\u672f\u5b9e\u73b0\u5904\u7406\u5668\u548c\u52a0\u901f\u5668\u4e4b\u95f4\u7684\u9ad8\u901f\u901a\u4fe1\u3002\u8fd9\u4e00\u6280\u672f\u57fa\u7840\u652f\u6301\u7740\u4ece\u5b9e\u65f6\u5206\u6790\u5230\u673a\u5668\u5b66\u4e60\u7b49\u5404\u79cd\u5de5\u4f5c\u8d1f\u8f7d\u3002<\/p>\n<p>\u73b0\u4ee3\u670d\u52a1\u5668\u67b6\u6784\u4e2d\u7684\u5173\u952e\u4e92\u8054\u8003\u8651\u56e0\u7d20\u5305\u62ec\uff1a<\/p>\n<ul>\n<li>\u76f4\u63a5\u5185\u5b58\u8bbf\u95ee\uff08DMA\uff09\u529f\u80fd<\/li>\n<li>\u7f13\u5b58\u4e00\u81f4\u6027\u534f\u8bae<\/li>\n<li>\u670d\u52a1\u8d28\u91cf\uff08QoS\uff09\u673a\u5236<\/li>\n<li>\u7535\u6e90\u7ba1\u7406\u529f\u80fd<\/li>\n<li>\u9519\u8bef\u68c0\u6d4b\u548c\u7ea0\u6b63\u7cfb\u7edf<\/li>\n<\/ul>\n<h2><strong>PCIe\u67b6\u6784\u6df1\u5ea6\u89e3\u6790<\/strong><\/h2>\n<p>PCI Express\uff08PCIe\uff09\u4ecd\u7136\u662f\u670d\u52a1\u5668\u67b6\u6784\u4e2d\u7ec4\u4ef6\u4e92\u8054\u7684\u884c\u4e1a\u6807\u51c6\u3002\u6700\u65b0\u7684PCIe 5.0\u89c4\u8303\u6bcf\u4e2a\u901a\u9053\u63d0\u4f9b32 GT\/s\uff0c\u4f7f\u5e26\u5bbd\u8f83\u5176\u524d\u4ee3\u4ea7\u54c1\u7ffb\u500d\u3002\u5bf9\u4e8ex16\u914d\u7f6e\uff0c\u8fd9\u610f\u5473\u7740\u7ea6128 GB\/s\u7684\u53cc\u5411\u5e26\u5bbd\u3002<\/p>\n<p>\u8ba9\u6211\u4eec\u6765\u770b\u770b\u5e26\u5bbd\u8ba1\u7b97\u516c\u5f0f\uff1a<br \/>\n\u5e26\u5bbd = (\u4f20\u8f93\u7387 \u00d7 \u901a\u9053\u6570 \u00d7 \u7f16\u7801\u6548\u7387) \/ 8<br \/>\n\u5bf9\u4e8ePCIe 5.0\uff1a32 GT\/s \u00d7 16\u901a\u9053 \u00d7 0.8 \/ 8 = 51.2 GB\/s\uff08\u5355\u5411\uff09<\/p>\n<div class=\"technical-specs\">\n<h3>PCIe\u4ee3\u9645\u6bd4\u8f83\uff1a<\/h3>\n<ul>\n<li>PCIe 3.0\uff1a\u6bcf\u901a\u90538 GT\/s<\/li>\n<li>PCIe 4.0\uff1a\u6bcf\u901a\u905316 GT\/s<\/li>\n<li>PCIe 5.0\uff1a\u6bcf\u901a\u905332 GT\/s<\/li>\n<li>PCIe 6.0\uff1a\u6bcf\u901a\u905364 GT\/s\uff08\u5373\u5c06\u63a8\u51fa\uff09<\/li>\n<\/ul>\n<\/div>\n<h2><strong>NVLink\u6280\u672f\uff1aGPU\u4e92\u8054\u9769\u547d<\/strong><\/h2>\n<p>NVIDIA\u7684NVLink\u6280\u672f\u5728GPU\u5230GPU\u548cGPU\u5230CPU\u7684\u901a\u4fe1\u65b9\u9762\u5b9e\u73b0\u4e86\u8d28\u7684\u98de\u8dc3\u3002\u7b2c\u56db\u4ee3NVLink\u7a81\u7834\u6781\u9650\uff0c\u5728GPU\u4e4b\u95f4\u63d0\u4f9b\u9ad8\u8fbe900 GB\/s\u7684\u53cc\u5411\u5e26\u5bbd\uff0c\u5927\u5e45\u8d85\u8d8a\u4f20\u7edfPCIe\u8fde\u63a5\u3002<\/p>\n<div class=\"technical-specs\">\n<p>NVLink\u5e26\u5bbd\u8ba1\u7b97\u65b9\u6cd5\uff1a<br \/>\n    \u603b\u5e26\u5bbd = \u94fe\u8def\u6570 \u00d7 \u94fe\u8def\u901f\u5ea6 \u00d7 \u53cc\u5de5\u56e0\u5b50<br \/>\n    \u793a\u4f8b\uff1a18\u4e2a\u94fe\u8def \u00d7 50 GB\/s \u00d7 2\uff08\u53cc\u5411\uff09= 1800 GB\/s\u7406\u8bba\u6700\u5927\u503c<\/p>\n<\/div>\n<h2><strong>\u5b9e\u9645\u6027\u80fd\u8003\u8651\u56e0\u7d20<\/strong><\/h2>\n<p>\u6570\u636e\u4e2d\u5fc3\u67b6\u6784\u5e08\u5fc5\u987b\u8003\u8651\u5f71\u54cd\u5b9e\u9645\u4e92\u8054\u6027\u80fd\u7684\u51e0\u4e2a\u56e0\u7d20\uff1a<\/p>\n<ul>\n<li>\u4fe1\u53f7\u5b8c\u6574\u6027\u548c\u7269\u7406\u5c42\u9650\u5236<\/li>\n<li>\u5185\u5b58\u5b50\u7cfb\u7edf\u80fd\u529b<\/li>\n<li>\u7cfb\u7edf\u62d3\u6251\u548c\u8def\u7531\u6548\u7387<\/li>\n<li>\u70ed\u91cf\u548c\u529f\u8017\u9650\u5236<\/li>\n<li>\u9a71\u52a8\u7a0b\u5e8f\u548c\u56fa\u4ef6\u4f18\u5316<\/li>\n<li>\u64cd\u4f5c\u7cfb\u7edf\u8c03\u5ea6\u6548\u7387<\/li>\n<\/ul>\n<h2><strong>\u9999\u6e2f\u670d\u52a1\u5668\u57fa\u7840\u8bbe\u65bd\u4f18\u5316<\/strong><\/h2>\n<p>\u5728\u9999\u6e2f\u7684\u670d\u52a1\u5668\u79df\u7528\u751f\u6001\u7cfb\u7edf\u4e2d\uff0c\u91d1\u878d\u4ea4\u6613\u548cAI\u5de5\u4f5c\u8d1f\u8f7d\u5360\u4e3b\u5bfc\u5730\u4f4d\uff0c\u4e92\u8054\u6280\u672f\u7684\u9009\u62e9\u53d8\u5f97\u81f3\u5173\u91cd\u8981\u3002\u9ad8\u9891\u4ea4\u6613\u64cd\u4f5c\u7279\u522b\u53d7\u76ca\u4e8e\u4f18\u5316\u7684GPU-Direct\u5b9e\u73b0\u548c\u4f4e\u5ef6\u8fdf\u4e92\u8054\u3002<\/p>\n<div class=\"performance-metrics\">\n<h3>\u9999\u6e2f\u670d\u52a1\u5668\u90e8\u7f72\u7684\u5173\u952e\u6027\u80fd\u6307\u6807\uff1a<\/h3>\n<ul>\n<li>\u5ef6\u8fdf\uff1a\u4e9a\u5fae\u79d2\u7ea7\u54cd\u5e94\u65f6\u95f4<\/li>\n<li>\u5e26\u5bbd\u5229\u7528\u7387\uff1a>\u7406\u8bba\u6700\u5927\u503c\u768480%<\/li>\n<li>\u961f\u5217\u6df1\u5ea6\u4f18\u5316\uff1a32-128\u961f\u5217\u6761\u76ee<\/li>\n<li>\u5185\u5b58\u541e\u5410\u91cf\uff1aHBM2E\u914d\u7f6e>800 GB\/s<\/li>\n<li>\u80fd\u6e90\u6548\u7387\uff1a<\u6bcfGB\/s 0.1\u74e6<\/li>\n<\/ul>\n<\/div>\n<h2><strong>\u5148\u8fdb\u4e92\u8054\u67b6\u6784<\/strong><\/h2>\n<p>\u65b0\u5174\u6280\u672f\u5982CXL\uff08Compute Express Link\uff09\u548cCCIX\uff08Cache Coherent Interconnect for Accelerators\uff09\u6b63\u5728\u91cd\u5851\u670d\u52a1\u5668\u67b6\u6784\u8303\u5f0f\u3002\u8fd9\u4e9b\u534f\u8bae\u5728\u5f02\u6784\u8ba1\u7b97\u5143\u7d20\u4e4b\u95f4\u5f15\u5165\u7f13\u5b58\u4e00\u81f4\u6027\uff0c\u5b9e\u73b0\u66f4\u9ad8\u6548\u7684\u8d44\u6e90\u5229\u7528\u3002<\/p>\n<h2><strong>\u7cfb\u7edf\u96c6\u6210\u6700\u4f73\u5b9e\u8df5<\/strong><\/h2>\n<p>\u5728\u9999\u6e2f\u670d\u52a1\u5668\u6258\u7ba1\u8bbe\u65bd\u90e8\u7f72\u9ad8\u6027\u80fd\u670d\u52a1\u5668\u65f6\uff0c\u8bf7\u8003\u8651\u4ee5\u4e0b\u96c6\u6210\u6307\u5357\uff1a<\/p>\n<ul>\n<li>\u5b9e\u65bd\u9002\u5f53\u7684PCIe\u5206\u53c9\u4ee5\u5b9e\u73b0\u6700\u4f73\u901a\u9053\u5206\u914d<\/li>\n<li>\u5728\u9002\u7528\u60c5\u51b5\u4e0b\u4f7f\u7528GPU-Direct RDMA<\/li>\n<li>\u4e3a\u591aGPU\u8bbe\u7f6e\u542f\u7528\u70b9\u5bf9\u70b9\u901a\u4fe1<\/li>\n<li>\u4f18\u5316\u591a\u63d2\u69fd\u7cfb\u7edf\u7684NUMA\u914d\u7f6e<\/li>\n<li>\u5b9e\u65bd\u5148\u8fdb\u7684\u7535\u6e90\u7ba1\u7406\u7b56\u7565<\/li>\n<li>\u90e8\u7f72\u57fa\u4e8e\u786c\u4ef6\u7684\u5b89\u5168\u529f\u80fd<\/li>\n<\/ul>\n<h2><strong>\u6027\u80fd\u76d1\u63a7\u548c\u4f18\u5316\u5de5\u5177<\/strong><\/h2>\n<p>\u5229\u7528\u4e13\u4e1a\u8bca\u65ad\u5de5\u5177\u5bf9\u4e92\u8054\u4f18\u5316\u81f3\u5173\u91cd\u8981\uff1a<\/p>\n<ul>\n<li>\u7528\u4e8eGPU\u4e92\u8054\u5206\u6790\u7684NVIDIA Nsight Systems<\/li>\n<li>\u7528\u4e8e\u5e26\u5bbd\u5229\u7528\u7387\u8ddf\u8e2a\u7684PCIe\u603b\u7ebf\u5206\u6790\u5668<\/li>\n<li>\u9488\u5bf9\u7279\u5b9a\u5de5\u4f5c\u8d1f\u8f7d\u7684\u81ea\u5b9a\u4e49\u57fa\u51c6\u6d4b\u8bd5\u5957\u4ef6<\/li>\n<li>\u7cfb\u7edf\u7ea7\u5206\u6790\u5de5\u5177<\/li>\n<li>\u70ed\u91cf\u548c\u529f\u7387\u76d1\u63a7\u89e3\u51b3\u65b9\u6848<\/li>\n<\/ul>\n<h2><strong>\u672a\u6765\u4e92\u8054\u6280\u672f<\/strong><\/h2>\n<p>\u670d\u52a1\u5668\u4e92\u8054\u6280\u672f\u7684\u53d1\u5c55\u8def\u7ebf\u56fe\u663e\u793a\u51fa\u4ee4\u4eba\u671f\u5f85\u7684\u53d1\u5c55\uff1a<\/p>\n<ul>\n<li>\u91c7\u7528PAM4\u4fe1\u53f7\u7684PCIe 6.0\uff08\u9884\u8ba12024\u5e74\uff09<\/li>\n<li>\u5e26\u5bbd>1 TB\/s\u7684\u4e0b\u4e00\u4ee3NVLink<\/li>\n<li>\u7528\u4e8e\u8d85\u4f4e\u5ef6\u8fdf\u7684\u5149\u5b50\u4e92\u8054<\/li>\n<li>\u7528\u4e8e\u4e13\u4e1a\u8ba1\u7b97\u7684\u91cf\u5b50\u4e92\u8054\u534f\u8bae<\/li>\n<li>\u7845\u5149\u5b50\u96c6\u6210<\/li>\n<li>\u5148\u8fdb\u7684\u9519\u8bef\u7ea0\u6b63\u673a\u5236<\/li>\n<\/ul>\n<h2><strong>\u9999\u6e2f\u6570\u636e\u4e2d\u5fc3\u5b9e\u65bd\u6307\u5357<\/strong><\/h2>\n<p>\u5728\u9999\u6e2f\u670d\u52a1\u5668\u79df\u7528\u73af\u5883\u4e2d\u6784\u5efa\u9ad8\u6027\u80fd\u7cfb\u7edf\u65f6\uff0c\u8bf7\u8003\u8651\u4ee5\u4e0b\u5173\u952e\u56e0\u7d20\uff1a<\/p>\n<ul>\n<li>\u529f\u7387\u5bc6\u5ea6\u8981\u6c42\uff08\u901a\u5e38\u6bcf\u673a\u67b615-30 kW\uff09<\/li>\n<li>\u51b7\u5374\u57fa\u7840\u8bbe\u65bd\u80fd\u529b<\/li>\n<li>\u7f51\u7edc\u67b6\u6784\u62d3\u6251<\/li>\n<li>\u5197\u4f59\u548c\u6545\u969c\u8f6c\u79fb\u673a\u5236<\/li>\n<li>\u73af\u5883\u63a7\u5236\u7cfb\u7edf<\/li>\n<li>\u7269\u7406\u5b89\u5168\u63aa\u65bd<\/li>\n<\/ul>\n<h2><strong>\u6280\u672f\u5efa\u8bae<\/strong><\/h2>\n<p>\u57fa\u4e8e\u5e7f\u6cdb\u7684\u6d4b\u8bd5\u548c\u5b9e\u9645\u90e8\u7f72\u7ecf\u9a8c\uff0c\u6211\u4eec\u5efa\u8bae\uff1a<\/p>\n<ol>\n<li>\u5b9e\u65bdGPU Direct Storage\u4ee5\u83b7\u5f97\u76f4\u63a5\u6570\u636e\u8def\u5f84<\/li>\n<li>\u4f7f\u7528PCIe 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