{"id":8874,"date":"2026-07-09T10:29:09","date_gmt":"2026-07-09T02:29:09","guid":{"rendered":"https:\/\/www.starverse-ai.com\/guide\/?p=8874"},"modified":"2026-07-09T10:29:10","modified_gmt":"2026-07-09T02:29:10","slug":"%e9%87%8d%e7%a3%85%e8%87%aa%e7%a0%94%ef%bd%9c%e6%98%9f%e5%ae%87%e6%99%ba%e7%ae%97%e6%8e%a8%e5%87%ba%e6%96%b0%e4%b8%80%e4%bb%a3%e9%ab%98%e9%80%9f-rdma-%e4%ba%92%e8%81%94%e7%ae%97%e5%8a%9b%e7%bd%91","status":"publish","type":"post","link":"https:\/\/www.starverse-ai.com\/guide\/archives\/8874","title":{"rendered":"\u91cd\u78c5\u81ea\u7814\uff5c\u661f\u5b87\u667a\u7b97\u63a8\u51fa\u65b0\u4e00\u4ee3\u9ad8\u901f RDMA \u4e92\u8054\u7b97\u529b\u7f51\u7edc\u5e95\u5ea7"},"content":{"rendered":"\n

\u4e00\u3001\u4ea7\u4e1a\u75db\u70b9\uff1a\u4f20\u7edf\u7b97\u529b\u7f51\u7edc\u96be\u4ee5\u9002\u914d\u8d85\u5927\u89c4\u6a21\u5206\u5e03\u5f0f\u8bad\u7ec3<\/h2>\n\n\n\n

\u968f\u7740\u5343\u4ebf\u3001\u4e07\u4ebf\u53c2\u6570\u5927\u6a21\u578b\u3001\u957f\u65f6\u5e8f\u89c6\u9891\u751f\u6210\u6a21\u578b\u666e\u53ca\uff0c\u5343\u5361\u81f3\u4e07\u5361\u96c6\u7fa4\u68af\u5ea6\u540c\u6b65\u3001\u5f20\u91cf\u4f20\u8f93\u4ea7\u751f\u6d77\u91cf\u9ad8\u9891\u5c0f\u5305\u901a\u4fe1\u6d41\u91cf\uff0c\u4f20\u7edf TCP \u4ee5\u592a\u7f51\u67b6\u6784\u5b58\u5728\u591a\u5c42\u6280\u672f\u77ed\u677f\uff0c\u6210\u4e3a\u5236\u7ea6\u8bad\u7ec3\u6548\u7387\u7684\u6838\u5fc3\u74f6\u9888\u3002<\/p>\n\n\n\n

    \n
  1. TCP \u534f\u8bae\u81ea\u5e26\u91cd\u4f20\u3001\u7f13\u5b58\u62e5\u585e\u63a7\u5236\u673a\u5236\uff0c\u8de8\u8282\u70b9\u68af\u5ea6\u805a\u5408\u573a\u666f\u4e0b\u6570\u636e\u5305\u6392\u961f\u62e5\u5835\u5e38\u6001\u5316\uff0c\u5355\u8f6e All-Reduce \u901a\u4fe1\u8017\u65f6\u6301\u7eed\u8d70\u9ad8\uff1b<\/li>\n\n\n\n
  2. \u5546\u7528\u901a\u7528 RDMA \u65b9\u6848\u591a\u4f9d\u8d56\u95ed\u6e90\u7b2c\u4e09\u65b9\u534f\u8bae\u6808\uff0c\u65e0\u6cd5\u4e0e\u81ea\u7814\u8c03\u5ea6\u7cfb\u7edf\u3001\u5206\u5e03\u5f0f\u8bad\u7ec3\u6846\u67b6\u6df1\u5ea6\u9002\u914d\uff0c\u5b58\u5728\u534f\u8bae\u5c42\u517c\u5bb9\u6027\u635f\u8017\uff1b<\/li>\n\n\n\n
  3. \u591a\u79df\u6237\u6df7\u5408\u7b97\u529b\u96c6\u7fa4\u4e2d\uff0c\u7f51\u7edc\u5e26\u5bbd\u8d44\u6e90\u9759\u6001\u5212\u5206\uff0c\u9ad8\u8d1f\u8f7d\u8bad\u7ec3\u4efb\u52a1\u6613\u62a2\u5360\u901a\u9053\uff0c\u95f2\u7f6e\u7b97\u529b\u8282\u70b9\u5e26\u5bbd\u65e0\u6cd5\u52a8\u6001\u8c03\u5ea6\uff1b<\/li>\n\n\n\n
  4. \u4e2d\u5927\u578b\u7b97\u529b\u670d\u52a1\u5546\u591a\u91c7\u7528\u6807\u51c6\u5316\u5916\u8d2d\u7f51\u7edc\u7ec4\u4ef6\uff0c\u7f3a\u5c11\u4ece\u7f51\u5361\u3001\u4ea4\u6362\u673a\u63a7\u5236\u9762\u5230\u96c6\u7fa4\u8c03\u5ea6\u7684\u4e00\u4f53\u5316\u534f\u540c\u4f18\u5316\uff0c\u4e07\u5361\u89c4\u6a21\u96c6\u7fa4\u901a\u4fe1\u5ef6\u8fdf\u5448\u6307\u6570\u7ea7\u4e0a\u5347\u3002 \u56fd\u5185\u7b97\u529b\u884c\u4e1a\u957f\u671f\u7f3a\u5c11\u5168\u94fe\u8def\u81ea\u7814\u3001\u9002\u914d\u56fd\u4ea7\u5206\u5e03\u5f0f\u8bad\u7ec3\u67b6\u6784\u7684 RDMA \u4e00\u4f53\u5316\u7f51\u7edc\u5e95\u5ea7\u3002\u57fa\u4e8e\u884c\u4e1a\u73b0\u5b58\u77ed\u677f\uff0c\u661f\u5b87\u667a\u7b97\u5b8c\u6210\u5e95\u5c42\u7f51\u7edc\u534f\u8bae\u3001\u6d41\u91cf\u8c03\u5ea6\u3001\u786c\u4ef6\u9002\u914d\u6a21\u5757\u5168\u6808\u7814\u53d1\uff0c\u6b63\u5f0f\u63a8\u51fa\u65b0\u4e00\u4ee3\u9ad8\u901f RDMA \u4e92\u8054\u7b97\u529b\u7f51\u7edc\u5e95\u5ea7\u3002<\/li>\n<\/ol>\n\n\n\n
    \"\"<\/figure>\n\n\n\n

    \u4e8c\u3001\u65b0\u4e00\u4ee3 RDMA \u7b97\u529b\u7f51\u7edc\u5e95\u5ea7\u6838\u5fc3\u81ea\u7814\u6a21\u5757<\/h2>\n\n\n\n

    \u6574\u5957\u7f51\u7edc\u5e95\u5ea7\u65e0\u7b2c\u4e09\u65b9\u95ed\u6e90\u534f\u8bae\u4f9d\u8d56\uff0c\u7531\u661f\u5b87\u667a\u7b97\u7b97\u529b\u7f51\u7edc\u5b9e\u9a8c\u5ba4\u72ec\u7acb\u5b8c\u6210\u7814\u53d1\uff0c\u5206\u4e3a\u56db\u5c42\u72ec\u7acb\u8bed\u4e49\u5355\u5143\uff0c\u5b9e\u73b0\u7aef\u5230\u7aef\u65e0\u635f\u901a\u4fe1\u95ed\u73af\u3002<\/p>\n\n\n\n

    2.1 \u8f7b\u91cf\u5316\u81ea\u7814 RDMA \u534f\u8bae\u63a7\u5236\u6808<\/h3>\n\n\n\n

    \u5265\u79bb\u901a\u7528 RDMA \u5197\u4f59\u63a7\u5236\u903b\u8f91\uff0c\u9488\u5bf9 AI \u8bad\u7ec3\u5c0f\u5305\u901a\u4fe1\u573a\u666f\u91cd\u6784\u62a5\u6587\u5c01\u88c5\u673a\u5236\uff0c\u533a\u5206\u68af\u5ea6\u540c\u6b65\u3001\u6a21\u578b\u6743\u91cd\u4f20\u8f93\u3001\u6570\u636e\u96c6\u52a0\u8f7d\u4e09\u7c7b\u6570\u636e\u6d41\uff0c\u8bbe\u7f6e\u72ec\u7acb\u62a5\u6587\u5904\u7406\u901a\u9053\u3002\u534f\u8bae\u6808\u5185\u7f6e\u786c\u4ef6\u5378\u8f7d\u903b\u8f91\uff0c\u5c06\u6570\u636e\u5305\u6821\u9a8c\u3001\u8def\u7531\u5bfb\u5740\u4ea4\u7531\u7f51\u5361\u786c\u4ef6\u5b8c\u6210\uff0c\u91ca\u653e CPU \u7b97\u529b\u8d44\u6e90\u3002<\/p>\n\n\n\n

    2.2 \u96c6\u7fa4\u7ea7\u52a8\u6001\u65e0\u635f\u6d41\u91cf\u8c03\u5ea6\u5f15\u64ce<\/h3>\n\n\n\n

    \u5bf9\u63a5\u661f\u5b87\u667a\u7b97\u5206\u5e03\u5f0f\u8bad\u7ec3\u8c03\u5ea6\u5185\u6838\uff0c\u5b9e\u65f6\u91c7\u96c6\u4ea4\u6362\u673a\u7aef\u53e3\u8d1f\u8f7d\u3001\u7f51\u5361\u961f\u5217\u5360\u7528\u3001\u8de8\u8282\u70b9\u901a\u4fe1\u9891\u6b21\u4e09\u7c7b\u6570\u636e\uff0c\u4ee5\u6beb\u79d2\u5468\u671f\u8c03\u6574 RDMA \u6570\u636e\u6d41\u8f6c\u53d1\u8def\u5f84\u3002\u9488\u5bf9\u6df7\u5408\u5e76\u884c\u8bad\u7ec3\u4efb\u52a1\u8bbe\u7f6e\u5e26\u5bbd\u6743\u91cd\u5206\u914d\u89c4\u5219\uff0c\u4fdd\u969c\u5927\u6a21\u578b\u9884\u8bad\u7ec3\u4efb\u52a1\u4f18\u5148\u5360\u7528\u65e0\u635f\u4f20\u8f93\u901a\u9053\uff0c\u907f\u514d\u5c0f\u4f5c\u4e1a\u6324\u5360\u6838\u5fc3\u5e26\u5bbd\u3002<\/p>\n\n\n\n

    2.3 \u8d85\u8282\u70b9\u5206\u5c42\u4e92\u8054\u62d3\u6251\u9002\u914d\u7ec4\u4ef6<\/h3>\n\n\n\n

    \u652f\u6301\u5355\u673a NVLink\u300132 \u5361\u8d85\u8282\u70b9\u3001\u5168\u57df\u4e07\u5361\u96c6\u7fa4\u4e09\u7ea7\u7ec4\u7f51\u67b6\u6784\uff0c\u81ea\u52a8\u8bc6\u522b\u7269\u7406\u786c\u4ef6\u62d3\u6251\u7ed3\u6784\uff0c\u5c06\u540c\u4e00\u8bad\u7ec3\u4f5c\u4e1a\u6570\u636e\u6d41\u7ea6\u675f\u5728\u540c\u5c42\u7ea7\u7f51\u7edc\u57df\u5185\u4f20\u8f93\uff0c\u51cf\u5c11\u8de8\u4ea4\u6362\u673a\u8fdc\u8ddd\u79bb RDMA \u62a5\u6587\u8f6c\u53d1\u9891\u6b21\u3002\u7ec4\u4ef6\u517c\u5bb9 400G\u3001200G \u4e3b\u6d41\u9ad8\u901f\u7f51\u5361\u786c\u4ef6\uff0c\u65e0\u9700\u66f4\u6362\u73b0\u6709\u7b97\u529b\u96c6\u7fa4\u8bbe\u5907\u5373\u53ef\u5b8c\u6210\u5e95\u5ea7\u5347\u7ea7\u90e8\u7f72\u3002<\/p>\n\n\n\n

    2.4 \u7f51\u7edc\u6545\u969c\u81ea\u6108\u4e0e\u5e26\u5bbd\u515c\u5e95\u6a21\u5757<\/h3>\n\n\n\n

    \u5b9e\u65f6\u76d1\u63a7\u7f51\u5361\u3001\u5149\u6a21\u5757\u3001\u4ea4\u6362\u673a\u94fe\u8def\u72b6\u6001\uff0c\u5355\u94fe\u8def\u6545\u969c\u89e6\u53d1\u540e\u8c03\u5ea6\u5f15\u64ce 15 \u6beb\u79d2\u5185\u5207\u6362\u5907\u7528 RDMA \u4f20\u8f93\u901a\u9053\uff0c\u8bad\u7ec3\u4efb\u52a1\u65e0\u9700\u4e2d\u65ad\u91cd\u542f\u3002\u6a21\u5757\u5185\u7f6e\u5e26\u5bbd\u4fdd\u5e95\u7b56\u7565\uff0c\u4e3a\u8fd0\u884c\u4e2d\u5206\u5e03\u5f0f\u4f5c\u4e1a\u9884\u7559\u6700\u4f4e\u65e0\u635f\u4f20\u8f93\u5e26\u5bbd\uff0c\u89c4\u907f\u7a81\u53d1\u6d41\u91cf\u5bfc\u81f4\u7684\u901a\u4fe1\u65ad\u5d16\u3002<\/p>\n\n\n\n

    \u4e09\u3001\u6807\u51c6\u5316\u96c6\u7fa4\u538b\u529b\u6d4b\u8bd5\u91cf\u5316\u6307\u6807<\/h2>\n\n\n\n

    \u661f\u5b87\u667a\u7b97\u91c7\u7528\u7edf\u4e00\u6d4b\u8bd5\u73af\u5883\u5f00\u5c55 72 \u5c0f\u65f6\u4e0d\u95f4\u65ad\u538b\u529b\u6d4b\u8bd5\uff1a10240 \u5361 A100 \u96c6\u7fa4\uff0c400G \u9ad8\u901f\u7f51\u5361\u7ec4\u7f51\uff0c\u8d1f\u8f7d\u8986\u76d6\u5343\u4ebf LLM \u9884\u8bad\u7ec3\u30014K \u89c6\u9891 DiT \u6a21\u578b\u5206\u5e03\u5f0f\u5fae\u8c03\u3001\u751f\u7269\u533b\u836f\u5206\u5b50\u6a21\u62df\u4e09\u7c7b\u5546\u7528\u573a\u666f\uff0c\u65b0\u65e7\u7f51\u7edc\u65b9\u6848\u5b9e\u6d4b\u5bf9\u6bd4\u6570\u636e\u5982\u4e0b\uff1a<\/p>\n\n\n\n

      \n
    1. \u8de8\u8282\u70b9 All-Reduce \u68af\u5ea6\u805a\u5408\u901a\u4fe1\u65f6\u5ef6\uff1a\u4f20\u7edf TCP \u7f51\u7edc\u5e73\u5747 23.7\u03bcs\uff0c\u901a\u7528\u7b2c\u4e09\u65b9 RDMA \u65b9\u6848 10.2\u03bcs\uff0c\u661f\u5b87\u667a\u7b97\u81ea\u7814 RDMA \u5e95\u5ea7\u964d\u81f3 5.4\u03bcs\uff0c\u76f8\u6bd4 TCP \u67b6\u6784\u964d\u4f4e 77.2%\uff1b<\/li>\n\n\n\n
    2. \u4e07\u5361\u96c6\u7fa4\u5c0f\u5305\u901a\u4fe1\u541e\u5410\u91cf\uff1a\u5355\u96c6\u7fa4\u65e0\u635f\u4f20\u8f93\u541e\u5410\u91cf\u63d0\u5347 41.6%\uff0c\u9ad8\u9891\u68af\u5ea6\u540c\u6b65\u573a\u666f\u65e0\u660e\u663e\u5e26\u5bbd\u8870\u51cf\uff1b<\/li>\n\n\n\n
    3. \u591a\u79df\u6237\u6df7\u5408\u96c6\u7fa4\u5e73\u5747 GPU \u5229\u7528\u7387\uff1a\u642d\u8f7d\u81ea\u7814 RDMA \u5e95\u5ea7\u540e\u7531 57.3% \u63d0\u5347\u81f3 75.8%\uff0c\u7f51\u7edc\u62e5\u5835\u9020\u6210\u7684\u7b97\u529b\u95f2\u7f6e\u5927\u5e45\u51cf\u5c11\uff1b<\/li>\n\n\n\n
    4. \u4e07\u4ebf\u53c2\u6570\u6a21\u578b\u5355\u8f6e\u8fed\u4ee3\u8017\u65f6\uff1a\u5bf9\u6bd4\u5916\u8d2d RDMA \u65b9\u6848\u7f29\u77ed 24.1%\uff0c\u957f\u5468\u671f\u9884\u8bad\u7ec3\u9879\u76ee\u6574\u4f53\u4ea4\u4ed8\u65f6\u957f\u540c\u6b65\u538b\u7f29\uff1b<\/li>\n\n\n\n
    5. \u94fe\u8def\u6545\u969c\u5207\u6362\u54cd\u5e94\u65f6\u957f\uff1a\u7b2c\u4e09\u65b9\u65b9\u6848\u5e73\u5747 92ms\uff0c\u661f\u5b87\u667a\u7b97\u81ea\u7814\u6a21\u5757\u7a33\u5b9a\u63a7\u5236\u5728 14\u201316ms \u533a\u95f4\uff0c\u8bad\u7ec3\u4e2d\u65ad\u635f\u8017\u4e0b\u964d\u8d85 80%\u3002 \u5168\u90e8\u6d4b\u8bd5\u6570\u636e\u5b58\u50a8\u4e8e\u661f\u5b87\u667a\u7b97\u7b97\u529b\u5b9e\u9a8c\u5ba4\u6d4b\u8bd5\u5e73\u53f0\uff0c\u652f\u6301\u5ba2\u6237\u73b0\u573a\u590d\u73b0\u9a8c\u8bc1\uff0c\u6570\u636e\u91c7\u96c6\u65e0\u4eba\u5de5\u5e72\u9884\u4e0e\u53c2\u6570\u4f18\u5316\u3002<\/li>\n<\/ol>\n\n\n\n

      \u56db\u3001\u81ea\u7814 RDMA \u5e95\u5ea7\u5546\u7528\u843d\u5730\u4ef7\u503c<\/h2>\n\n\n\n

      4.1 \u964d\u4f4e\u4f01\u4e1a\u6a21\u578b\u8bad\u7ec3\u7efc\u5408\u7b97\u529b\u6210\u672c<\/h3>\n\n\n\n

      \u901a\u4fe1\u65f6\u5ef6\u4e0b\u964d\u76f4\u63a5\u7f29\u77ed\u6a21\u578b\u8fed\u4ee3\u5468\u671f\uff0c\u5ba2\u6237\u5b8c\u6210\u540c\u7b49\u8bad\u7ec3\u4efb\u52a1\u6240\u9700\u4e07\u5361\u96c6\u7fa4\u79df\u7528\u65f6\u957f\u51cf\u5c11 23% \u4ee5\u4e0a\u3002\u96c6\u7fa4\u786c\u4ef6\u5229\u7528\u7387\u540c\u6b65\u63d0\u5347\uff0c\u5355\u4f4d\u53c2\u6570\u8bad\u7ec3\u7b97\u529b\u7efc\u5408\u6210\u672c\u4e0b\u964d\u7ea6 21%\u3002\u661f\u5b87\u667a\u7b97\u4e00\u7ad9\u5f0f\u7b97\u529b\u5e73\u53f0\u5df2\u5168\u9762\u63a5\u5165\u8be5 RDMA \u7f51\u7edc\u5e95\u5ea7\uff0cGPU \u88f8\u673a\u79df\u7528\u3001\u661f\u6865 API \u591a\u6a21\u6001\u8bad\u7ec3\u670d\u52a1\u3001\u5206\u5e03\u5f0f\u5b9a\u5236\u5316\u96c6\u7fa4\u5747\u53ef\u539f\u751f\u542f\u7528\u65e0\u635f\u4e92\u8054\u80fd\u529b\uff0c\u5ba2\u6237\u65e0\u9700\u989d\u5916\u90e8\u7f72\u7f51\u7edc\u7ec4\u4ef6\u3002<\/p>\n\n\n\n

      4.2 \u5b8c\u5584\u56fd\u4ea7\u7b97\u529b\u5168\u6808\u81ea\u4e3b\u53ef\u63a7\u94fe\u8def<\/h3>\n\n\n\n

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      \u4e94\u3001\u6280\u672f\u8fed\u4ee3\u89c4\u5212\u4e0e\u884c\u4e1a\u5f71\u54cd<\/h2>\n\n\n\n

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