{"id":18966,"date":"2025-03-27T14:23:23","date_gmt":"2025-03-27T06:23:23","guid":{"rendered":"https:\/\/www.varidata.com\/uncategorized-zh-tw\/server-cpu-gpu-interconnect-tech-and-bandwidth-calculation\/"},"modified":"2025-03-27T14:29:34","modified_gmt":"2025-03-27T06:29:34","slug":"server-cpu-gpu-interconnect-tech-and-bandwidth-calculation","status":"publish","type":"post","link":"https:\/\/www.varidata.com\/zh-tw\/knowledge-tc\/server-cpu-gpu-interconnect-tech-and-bandwidth-calculation\/","title":{"rendered":"\u4f3a\u670d\u5668\u5167\u90e8CPU&#038;GPU\u4e92\u806f\u6280\u8853\u548c\u983b\u5bec\u8a08\u7b97\u65b9\u5f0f"},"content":{"rendered":"<p>\u73fe\u4ee3\u904b\u7b97\u57fa\u790e\u8a2d\u65bd\u7684\u767c\u5c55\uff0c\u7279\u5225\u662f\u5728<a href=\"https:\/\/www.varidata.com\/zh-tw\/server\/hk\/cn2\/\" target=\"_blank\">\u9999\u6e2f\u4f3a\u670d\u5668\u79df\u7528<\/a>\u74b0\u5883\u4e2d\uff0c\u8b93\u4f3a\u670d\u5668CPU\u548cGPU\u4e92\u806f\u6280\u8853\u5099\u53d7\u95dc\u6ce8\u3002\u9019\u4e9b\u8907\u96dc\u7684\u901a\u8a0a\u8def\u5f91\u6c7a\u5b9a\u4e86\u9ad8\u7aef\u904b\u7b97\u7cfb\u7d71\u7684\u6548\u80fd\u4e0a\u9650\uff0c\u5c24\u5176\u662f\u5728\u8cc7\u6599\u5bc6\u96c6\u578b\u61c9\u7528\u548cAI\u5de5\u4f5c\u8ca0\u8f09\u65b9\u9762\u3002<\/p>\n<p>\u5728\u9999\u6e2f\u5145\u6eff\u6d3b\u529b\u7684\u8cc7\u6599\u4e2d\u5fc3\u74b0\u5883\u4e2d\uff0c\u91d1\u878d\u6a5f\u69cb\u548c\u79d1\u6280\u516c\u53f8\u5c0d\u524d\u6240\u672a\u6709\u7684\u904b\u7b97\u80fd\u529b\u63d0\u51fa\u4e86\u66f4\u9ad8\u8981\u6c42\uff0cCPU\u548cGPU\u4e4b\u9593\u7684\u4e92\u806f\u67b6\u69cb\u5df2\u6210\u70ba\u7cfb\u7d71\u6548\u80fd\u7684\u95dc\u9375\u5dee\u7570\u5316\u56e0\u7d20\u3002\u4f5c\u70ba\u91d1\u878d\u4e2d\u5fc3\uff0c\u9999\u6e2f\u9700\u8981\u80fd\u5920\u8655\u7406\u6d77\u91cf\u8cc7\u6599\u541e\u5410\u91cf\u7684\u8d85\u4f4e\u5ef6\u9072\u89e3\u6c7a\u65b9\u6848\uff0c\u540c\u6642\u5728\u5c16\u5cf0\u8ca0\u8f09\u4e0b\u4fdd\u6301\u7a69\u5b9a\u6548\u80fd\u3002<\/p>\n<h2><strong>\u7406\u89e3\u4f3a\u670d\u5668\u4e92\u806f\u57fa\u790e<\/strong><\/h2>\n<p>\u904b\u7b97\u57fa\u790e\u8a2d\u65bd\u5df2\u7d93\u767c\u5c55\u8d85\u8d8a\u4e86\u7c21\u55ae\u7684CPU\u4e2d\u5fc3\u67b6\u69cb\u3002\u73fe\u4ee3\u4f3a\u670d\u5668\uff0c\u5c24\u5176\u662f\u90e8\u7f72\u5728\u9999\u6e2f\u5c16\u7aef\u8cc7\u6599\u4e2d\u5fc3\u7684\u4f3a\u670d\u5668\uff0c\u5229\u7528\u8907\u96dc\u7684\u4e92\u806f\u6280\u8853\u5be6\u73fe\u8655\u7406\u5668\u548c\u52a0\u901f\u5668\u4e4b\u9593\u7684\u9ad8\u901f\u901a\u8a0a\u3002\u9019\u4e00\u6280\u8853\u57fa\u790e\u652f\u63f4\u8457\u5f9e\u5373\u6642\u5206\u6790\u5230\u6a5f\u5668\u5b78\u7fd2\u7b49\u5404\u7a2e\u5de5\u4f5c\u8ca0\u8f09\u3002<\/p>\n<p>\u73fe\u4ee3\u4f3a\u670d\u5668\u67b6\u69cb\u4e2d\u7684\u95dc\u9375\u4e92\u806f\u8003\u616e\u56e0\u7d20\u5305\u62ec\uff1a<\/p>\n<ul>\n<li>\u76f4\u63a5\u8a18\u61b6\u9ad4\u5b58\u53d6\uff08DMA\uff09\u529f\u80fd<\/li>\n<li>\u5feb\u53d6\u4e00\u81f4\u6027\u5354\u5b9a<\/li>\n<li>\u670d\u52d9\u54c1\u8cea\uff08QoS\uff09\u6a5f\u5236<\/li>\n<li>\u96fb\u6e90\u7ba1\u7406\u529f\u80fd<\/li>\n<li>\u932f\u8aa4\u6aa2\u6e2c\u548c\u7cfe\u6b63\u7cfb\u7d71<\/li>\n<\/ul>\n<h2><strong>PCIe\u67b6\u69cb\u6df1\u5ea6\u89e3\u6790<\/strong><\/h2>\n<p>PCI Express\uff08PCIe\uff09\u4ecd\u7136\u662f\u4f3a\u670d\u5668\u67b6\u69cb\u4e2d\u5143\u4ef6\u4e92\u806f\u7684\u7522\u696d\u6a19\u6e96\u3002\u6700\u65b0\u7684PCIe 5.0\u898f\u7bc4\u6bcf\u500b\u901a\u9053\u63d0\u4f9b32 GT\/s\uff0c\u4f7f\u983b\u5bec\u8f03\u5176\u524d\u4ee3\u7522\u54c1\u7ffb\u500d\u3002\u5c0d\u65bcx16\u914d\u7f6e\uff0c\u9019\u610f\u5473\u8457\u7d04128 GB\/s\u7684\u96d9\u5411\u983b\u5bec\u3002<\/p>\n<p>\u8b93\u6211\u5011\u4f86\u770b\u770b\u983b\u5bec\u8a08\u7b97\u516c\u5f0f\uff1a<br \/>\n\u983b\u5bec = (\u50b3\u8f38\u7387 \u00d7 \u901a\u9053\u6578 \u00d7 \u7de8\u78bc\u6548\u7387) \/ 8<br \/>\n\u5c0d\u65bcPCIe 5.0\uff1a32 GT\/s \u00d7 16\u901a\u9053 \u00d7 0.8 \/ 8 = 51.2 GB\/s\uff08\u55ae\u5411\uff09<\/p>\n<div class=\"technical-specs\">\n<h3>PCIe\u4ee3\u969b\u6bd4\u8f03\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\u5c07\u63a8\u51fa\uff09<\/li>\n<\/ul>\n<\/div>\n<h2><strong>NVLink\u6280\u8853\uff1aGPU\u4e92\u806f\u9769\u547d<\/strong><\/h2>\n<p>NVIDIA\u7684NVLink\u6280\u8853\u5728GPU\u5230GPU\u548cGPU\u5230CPU\u7684\u901a\u8a0a\u65b9\u9762\u5be6\u73fe\u4e86\u8cea\u7684\u98db\u8e8d\u3002\u7b2c\u56db\u4ee3NVLink\u7a81\u7834\u6975\u9650\uff0c\u5728GPU\u4e4b\u9593\u63d0\u4f9b\u9ad8\u9054900 GB\/s\u7684\u96d9\u5411\u983b\u5bec\uff0c\u5927\u5e45\u8d85\u8d8a\u50b3\u7d71PCIe\u9023\u63a5\u3002<\/p>\n<div class=\"technical-specs\">\n<p>NVLink\u983b\u5bec\u8a08\u7b97\u65b9\u6cd5\uff1a<br \/>\n    \u7e3d\u983b\u5bec = \u9023\u7d50\u6578 \u00d7 \u9023\u7d50\u901f\u5ea6 \u00d7 \u96d9\u5de5\u56e0\u5b50<br \/>\n    \u793a\u4f8b\uff1a18\u500b\u9023\u7d50 \u00d7 50 GB\/s \u00d7 2\uff08\u96d9\u5411\uff09= 1800 GB\/s\u7406\u8ad6\u6700\u5927\u503c<\/p>\n<\/div>\n<h2><strong>\u5be6\u969b\u6548\u80fd\u8003\u616e\u56e0\u7d20<\/strong><\/h2>\n<p>\u8cc7\u6599\u4e2d\u5fc3\u67b6\u69cb\u5e2b\u5fc5\u9808\u8003\u616e\u5f71\u97ff\u5be6\u969b\u4e92\u806f\u6548\u80fd\u7684\u5e7e\u500b\u56e0\u7d20\uff1a<\/p>\n<ul>\n<li>\u8a0a\u865f\u5b8c\u6574\u6027\u548c\u5be6\u9ad4\u5c64\u9650\u5236<\/li>\n<li>\u8a18\u61b6\u9ad4\u5b50\u7cfb\u7d71\u80fd\u529b<\/li>\n<li>\u7cfb\u7d71\u62d3\u64b2\u548c\u8def\u7531\u6548\u7387<\/li>\n<li>\u71b1\u91cf\u548c\u529f\u8017\u9650\u5236<\/li>\n<li>\u9a45\u52d5\u7a0b\u5f0f\u548c\u97cc\u9ad4\u512a\u5316<\/li>\n<li>\u4f5c\u696d\u7cfb\u7d71\u6392\u7a0b\u6548\u7387<\/li>\n<\/ul>\n<h2><strong>\u9999\u6e2f\u4f3a\u670d\u5668\u57fa\u790e\u8a2d\u65bd\u512a\u5316<\/strong><\/h2>\n<p>\u5728\u9999\u6e2f\u7684\u4f3a\u670d\u5668\u79df\u7528\u751f\u614b\u7cfb\u7d71\u4e2d\uff0c\u91d1\u878d\u4ea4\u6613\u548cAI\u5de5\u4f5c\u8ca0\u8f09\u5360\u4e3b\u5c0e\u5730\u4f4d\uff0c\u4e92\u806f\u6280\u8853\u7684\u9078\u64c7\u8b8a\u5f97\u81f3\u95dc\u91cd\u8981\u3002\u9ad8\u983b\u4ea4\u6613\u64cd\u4f5c\u7279\u5225\u53d7\u76ca\u65bc\u512a\u5316\u7684GPU-Direct\u5be6\u73fe\u548c\u4f4e\u5ef6\u9072\u4e92\u806f\u3002<\/p>\n<div class=\"performance-metrics\">\n<h3>\u9999\u6e2f\u4f3a\u670d\u5668\u90e8\u7f72\u7684\u95dc\u9375\u6548\u80fd\u6307\u6a19\uff1a<\/h3>\n<ul>\n<li>\u5ef6\u9072\uff1a\u4e9e\u5fae\u79d2\u7d1a\u56de\u61c9\u6642\u9593<\/li>\n<li>\u983b\u5bec\u5229\u7528\u7387\uff1a>\u7406\u8ad6\u6700\u5927\u503c\u768480%<\/li>\n<li>\u4f47\u5217\u6df1\u5ea6\u512a\u5316\uff1a32-128\u4f47\u5217\u689d\u76ee<\/li>\n<li>\u8a18\u61b6\u9ad4\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\u9032\u4e92\u806f\u67b6\u69cb<\/strong><\/h2>\n<p>\u65b0\u8208\u6280\u8853\u5982CXL\uff08Compute Express Link\uff09\u548cCCIX\uff08Cache Coherent Interconnect for Accelerators\uff09\u6b63\u5728\u91cd\u5851\u4f3a\u670d\u5668\u67b6\u69cb\u7bc4\u5f0f\u3002\u9019\u4e9b\u5354\u5b9a\u5728\u7570\u69cb\u904b\u7b97\u5143\u7d20\u4e4b\u9593\u5f15\u5165\u5feb\u53d6\u4e00\u81f4\u6027\uff0c\u5be6\u73fe\u66f4\u9ad8\u6548\u7684\u8cc7\u6e90\u5229\u7528\u3002<\/p>\n<h2><strong>\u7cfb\u7d71\u6574\u5408\u6700\u4f73\u5be6\u52d9<\/strong><\/h2>\n<p>\u5728\u9999\u6e2f\u4f3a\u670d\u5668\u8a17\u7ba1\u8a2d\u65bd\u90e8\u7f72\u9ad8\u6548\u80fd\u4f3a\u670d\u5668\u6642\uff0c\u8acb\u8003\u616e\u4ee5\u4e0b\u6574\u5408\u6307\u5357\uff1a<\/p>\n<ul>\n<li>\u5be6\u65bd\u9069\u7576\u7684PCIe\u5206\u53c9\u4ee5\u5be6\u73fe\u6700\u4f73\u901a\u9053\u5206\u914d<\/li>\n<li>\u5728\u9069\u7528\u60c5\u6cc1\u4e0b\u4f7f\u7528GPU-Direct RDMA<\/li>\n<li>\u70ba\u591aGPU\u8a2d\u7f6e\u555f\u7528\u9ede\u5c0d\u9ede\u901a\u8a0a<\/li>\n<li>\u512a\u5316\u591a\u63d2\u69fd\u7cfb\u7d71\u7684NUMA\u914d\u7f6e<\/li>\n<li>\u5be6\u65bd\u5148\u9032\u7684\u96fb\u6e90\u7ba1\u7406\u7b56\u7565<\/li>\n<li>\u90e8\u7f72\u57fa\u65bc\u786c\u9ad4\u7684\u5b89\u5168\u529f\u80fd<\/li>\n<\/ul>\n<h2><strong>\u6548\u80fd\u76e3\u63a7\u548c\u512a\u5316\u5de5\u5177<\/strong><\/h2>\n<p>\u5229\u7528\u5c08\u696d\u8a3a\u65b7\u5de5\u5177\u5c0d\u4e92\u806f\u512a\u5316\u81f3\u95dc\u91cd\u8981\uff1a<\/p>\n<ul>\n<li>\u7528\u65bcGPU\u4e92\u806f\u5206\u6790\u7684NVIDIA Nsight Systems<\/li>\n<li>\u7528\u65bc\u983b\u5bec\u5229\u7528\u7387\u8ffd\u8e64\u7684PCIe\u532f\u6d41\u6392\u5206\u6790\u5668<\/li>\n<li>\u91dd\u5c0d\u7279\u5b9a\u5de5\u4f5c\u8ca0\u8f09\u7684\u81ea\u8a02\u57fa\u6e96\u6e2c\u8a66\u5957\u4ef6<\/li>\n<li>\u7cfb\u7d71\u7d1a\u5206\u6790\u5de5\u5177<\/li>\n<li>\u71b1\u91cf\u548c\u529f\u7387\u76e3\u63a7\u89e3\u6c7a\u65b9\u6848<\/li>\n<\/ul>\n<h2><strong>\u672a\u4f86\u4e92\u806f\u6280\u8853<\/strong><\/h2>\n<p>\u4f3a\u670d\u5668\u4e92\u806f\u6280\u8853\u7684\u767c\u5c55\u8def\u7dda\u5716\u986f\u793a\u51fa\u4ee4\u4eba\u671f\u5f85\u7684\u767c\u5c55\uff1a<\/p>\n<ul>\n<li>\u63a1\u7528PAM4\u8a0a\u865f\u7684PCIe 6.0\uff08\u9810\u8a082024\u5e74\uff09<\/li>\n<li>\u983b\u5bec>1 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