{"id":1268,"date":"2023-08-31T10:55:46","date_gmt":"2023-08-31T02:55:46","guid":{"rendered":"https:\/\/airy.cn\/WordPress\/?p=1268"},"modified":"2023-08-31T10:55:47","modified_gmt":"2023-08-31T02:55:47","slug":"%e8%b0%88%e8%b0%88infiniband%e5%92%8cethernet%e7%bd%91%e7%bb%9c%e7%9a%84%e5%b7%ae%e5%bc%82","status":"publish","type":"post","link":"https:\/\/airy.cn\/WordPress\/?p=1268","title":{"rendered":"\u8c08\u8c08InfiniBand\u548cEthernet\u7f51\u7edc\u7684\u5dee\u5f02"},"content":{"rendered":"\n<p><\/p>\n\n\n\n<p><a href=\"https:\/\/www.zhihu.com\/tardis\/bd\/art\/163104439\">https:\/\/www.zhihu.com\/tardis\/bd\/art\/163104439<\/a><\/p>\n\n\n\n<p><a href=\"https:\/\/blog.csdn.net\/sj349781478\/article\/details\/125111234\">https:\/\/blog.csdn.net\/sj349781478\/article\/details\/125111234<\/a><\/p>\n\n\n\n<p>InfiniBand\u662f\u4e00\u79cd\u5f00\u653e\u6807\u51c6\u7684\u9ad8\u5e26\u5bbd\uff0c\u4f4e\u65f6\u5ef6\uff0c\u9ad8\u53ef\u9760\u7684\u7f51\u7edc\u4e92\u8054\u6280\u672f\u3002\u8be5\u6280\u672f\u7531IBTA\uff08InfiniBand Trade Alliance\uff09\u5b9a\u4e49\u63a8\u52a8\u5728\u8d85\u7ea7\u8ba1\u7b97\u673a\u96c6\u7fa4\u9886\u57df\u5e7f\u6cdb\u5e94\u7528\uff0c\u540c\u65f6\uff0c\u968f\u7740\u4eba\u5de5\u667a\u80fd\u7684\u5174\u8d77\uff0c\u4e5f\u662fGPU\u670d\u52a1\u5668\u9996\u9009\u7684\u7f51\u7edc\u4e92\u8054\u6280\u672f\u3002\u76ee\u524d\uff0c\u6700\u65b0\u7684InfiniBand\u4ea7\u54c1\u4e3aMellanox\u751f\u4ea7\u7684HDR\uff0c\u53ef\u4ee5\u4e3a\u7f51\u7edc\u63d0\u4f9b\u7aef\u5230\u7aef\u9ad8\u8fbe200Gbps\u7684\u5e26\u5bbd\uff0c\u4e3a\u9ad8\u6027\u80fd\u8ba1\u7b97\uff0c\u4eba\u5de5\u667a\u80fd\u7b49\u9886\u57df\u5e26\u6765\u65e0\u4e0e\u4f26\u6bd4\u7684\u7f51\u7edc\u4f53\u9a8c\uff0c\u6700\u5927\u7a0b\u5ea6\u91ca\u653e\u96c6\u7fa4\u5185\u8ba1\u7b97\u6f5c\u80fd\u3002<\/p>\n\n\n\n<p>\u4ee5\u592a\u7f51(Ethernet)\u6307\u7684\u662f\u7531 Xerox\u516c\u53f8\u521b\u5efa\u5e76\u7531Xerox\u3001Intel\u548c DEC\u516c\u53f8\u8054\u5408\u5f00\u53d1\u7684\u57fa\u5e26\u5c40\u57df\u7f51\u89c4\u8303\u6807\u51c6\uff0c\u901a\u7528\u7684\u4ee5\u592a\u7f51\u6807\u51c6\u4e8e1980\u5e749\u670830\u65e5\u51fa\u53f0\uff0c\u662f\u5f53\u4eca\u73b0\u6709\u5c40\u57df\u7f51\u91c7\u7528\u7684\u6700\u901a\u7528\u7684\u901a\u4fe1\u534f\u8bae\u6807\u51c6<a href=\"https:\/\/zhuanlan.zhihu.com\/p\/163104439\/edit#_ftn1\">[1]<\/a>\u76ee\u524d\u7531IEEE\u7ec4\u7ec7\u7684IEEE802.3\u6807\u51c6\u7ec4\u7ec7\u5236\u5b9a\u5176\u6280\u672f\u6807\u51c6\uff0c\u76ee\u524d\u5df2\u7ecf\u53d1\u5e03\u4e86100GE\uff0c200GE\uff0c400GE\u7684\u4ee5\u592a\u7f51\u63a5\u53e3\uff0c\u662f\u76ee\u524d\u901f\u7387\u6700\u9ad8\u7684\u4f20\u8f93\u6280\u672f\u3002<\/p>\n\n\n\n<p>\u4f5c\u4e3a\u4e92\u8fde\u6280\u672f\u7684InfiniBand\u548cEthernet\u53ef\u4ee5\u8bf4\u5404\u6709\u5176\u7279\u70b9\u548c\u5dee\u5f02\uff0c\u4e0d\u80fd\u4e00\u6982\u800c\u8bba\u5b70\u4f18\u5b70\u52a3\uff0c\u5728\u5404\u81ea\u4e0d\u540c\u7684\u9002\u7528\u9886\u57df\u4e0d\u65ad\u53d1\u5c55\u6f14\u8fdb\uff0c\u6210\u4e3a\u6211\u4eec\u7f51\u7edc\u4e16\u754c\u4e2d\u4e0d\u53ef\u6216\u7f3a\u7684\u4e24\u79cd\u4e92\u8fde\u6280\u672f\u3002<\/p>\n\n\n\n<p>\u5bf9\u4e8eEthernet\u6bcb\u5eb8\u591a\u8a00\uff0c\u548cIP\u6280\u672f\u6784\u6210\u4e86\u76ee\u524d\u4e16\u754c\u4e0a\u6574\u4e2a\u4e92\u8054\u7f51\u7edc\u5927\u53a6\u7684\u57fa\u77f3\uff0c\u6240\u6709\u4eba\u4e0e\u667a\u80fd\u8bbe\u5907\u7686\u4f9d\u9760Ethernet\u5b9e\u73b0\u4e07\u7269\u4e92\u8054\uff0c\u8fd9\u4e0e\u5176\u8bbe\u8ba1\u521d\u8877\u5c31\u662f\u4e3a\u4e86\u80fd\u591f\u5b9e\u73b0\u66f4\u597d\u7684\u517c\u5bb9\u6709\u5173\uff0c\u80fd\u8ba9\u4e0d\u540c\u7684\u7cfb\u7edf\u53ef\u4ee5\u66f4\u597d\u7684\u4e92\u8fde\u4e92\u901a\uff0c\u8fd9\u6837\u4f7f\u5f97Ethernet\u81ea\u8bde\u751f\u4e4b\u521d\u5c31\u5177\u6709\u975e\u5e38\u5f3a\u7684\u9002\u5e94\u6027\uff0c\u7ecf\u8fc7\u6570\u5341\u5e74\u7684\u53d1\u5c55\u6210\u4e3a\u4e92\u8054\u7f51\u4e2d\u4e8b\u5b9e\u4e0a\u7684\u6807\u51c6\u3002<\/p>\n\n\n\n<p>\u800cInfiniBand\uff0c\u4f5c\u4e3a\u6807\u51c6\u5236\u5b9a\u7684\u521d\u8877\u662f\u4e3a\u4e86\u89e3\u51b3\u9ad8\u6027\u80fd\u8ba1\u7b97\u573a\u666f\u4e2d\u7a81\u7834\u96c6\u7fa4\u4e2d\u6570\u636e\u4f20\u8f93\u74f6\u9888\u75db\u70b9\u5e94\u8fd0\u800c\u751f\u7684\u4e00\u79cd\u4e92\u8fde\u6807\u51c6\uff0c\u4ece\u5236\u5b9a\u4e4b\u521d\u5c31\u5b9a\u4f4d\u4e3a\u9ad8\u7aef\u5e94\u7528\uff0c\u4e92\u8fde\u4e92\u901a\u4e0d\u662f\u4e3b\u8981\u77db\u76fe\uff0c\u9ad8\u6027\u80fd\u901a\u4fe1\u624d\u662f\u4e3b\u8981\u5207\u5165\u70b9\uff0c\u6240\u4ee5\uff0c\u76f8\u5bf9\u4e8eEthernet\u6280\u672f\u800c\u8a00\uff0c\u7531\u4e8e\u5b9a\u4f4d\u7684\u5dee\u5f02\u5bfc\u81f4InfiniBand\u4e0e\u751f\u4ff1\u6765\u5c31\u6709\u5f88\u591a\u548cEthernet\u7684\u4e0d\u540c\uff0c\u4e3b\u8981\u8868\u73b0\u5728\u5e26\u5bbd\u3001\u65f6\u5ef6\u3001\u7f51\u7edc\u53ef\u9760\u6027\u3001\u548c\u7ec4\u7f51\u65b9\u5f0f\u4e0a\u3002<\/p>\n\n\n\n<p><strong>\u5e26\u5bbd\uff1a<\/strong>\u81eaInfiniBand\u8bde\u751f\u4ee5\u6765\uff0c\u5f88\u957f\u4e00\u6bb5\u65f6\u95f4InfiniBand\u7f51\u7edc\u901f\u7387\u7684\u53d1\u5c55\u90fd\u662f\u5feb\u4e8eEthernet\u7684\uff0c\u4e3b\u8981\u539f\u56e0\u5c31\u662f\u56e0\u4e3aInfiniBand\u5e94\u7528\u4e8e\u9ad8\u6027\u80fd\u8ba1\u7b97\u4e2d\u670d\u52a1\u5668\u4e4b\u95f4\u7684\u4e92\u8fde\uff0cEthernet\u9762\u5411\u66f4\u591a\u7684\u662f\u7ec8\u7aef\u7684\u8bbe\u5907\u4e92\u8fde\uff0c\u5e26\u5bbd\u4e0a\u6ca1\u6709\u592a\u9ad8\u7684\u9700\u6c42\uff0c\u6240\u4ee5\uff0c\u8fd9\u5c31\u5bfc\u81f4Ethernet\u7684\u6807\u51c6\u7ec4\u7ec7\u8bbe\u8ba1\u6807\u51c6\u65f6\u4ec5\u4ec5\u8003\u8651\u5982\u4f55\u5b9e\u73b0\u4e92\u901a\uff0c\u800c\u6ca1\u6709\u50cfInfiniBand\u90a3\u6837\u4e0d\u4ec5\u8003\u8651\u4e92\u901a\uff0c\u8fd8\u8981\u8003\u8651\u7f51\u7edc\u5728\u9ad8\u901f\u4f20\u8f93\u65f6\u5982\u4f55\u964d\u4f4e\u5bf9CPU\u7684\u8d1f\u8f7d\uff0c\u5728\u9ad8\u901f\u901a\u4fe1\u65f6\u4e0d\u4ec5\u5e26\u5bbd\u53ef\u4ee5\u9ad8\u6548\u5229\u7528\u540c\u65f6\u5360\u7528\u5c3d\u91cf\u5c11\u7684CPU\u8d44\u6e90\u3002\u5bf9\u4e8e10G\u4ee5\u4e0a\u7684\u9ad8\u901f\u7f51\u7edc\u6d41\u91cf\uff0c\u5982\u679c\u6240\u6709\u62a5\u6587\u90fd\u7531CPU\u5904\u7406\u5c01\u5305\u89e3\u5c01\u5305\u5c06\u4f1a\u5360\u7528\u975e\u5e38\u591a\u7684\u8d44\u6e90\uff0c\u8fd9\u6837\u76f8\u5f53\u4e8e\u7528\u6602\u8d35CPU\u7684\u5927\u91cf\u8d44\u6e90\u8d44\u6e90\u4ec5\u4ec5\u662f\u5904\u7406\u7f51\u7edc\u4f20\u8f93\u7684\u7b80\u5355\u4efb\u52a1\uff0c\u5728\u8d44\u6e90\u914d\u7f6e\u7684\u89d2\u5ea6\u4e0a\u770b\u662f\u4e00\u79cd\u6d6a\u8d39\uff0c\u6240\u4ee5\uff0c\u7531\u4e8e\u7b2c\u4e00\u4ee3InfiniBand\u7684SDR\u7684\u901f\u7387\u5c31\u662f10Gbps\uff0c\u8fd9\u79cd\u73b0\u8c61\u662f\u4e0d\u5f97\u4e0d\u8003\u8651\u8fdb\u6765\u7684\uff0c\u56e0\u800c\u501f\u9274DMA<a href=\"https:\/\/zhuanlan.zhihu.com\/p\/163104439\/edit#_ftn2\">[2]<\/a>\u6280\u672f\u7684\u601d\u8def\uff0c\u65c1\u8defCPU\uff0c\u4e0d\u4ec5\u63d0\u9ad8\u4e86\u7684\u6570\u636e\u4f20\u8f93\u5e26\u5bbd\u800c\u4e14\u51cf\u8f7b\u7684CPU\u7684\u8d1f\u62c5\uff0c\u5b9a\u4e49\u4e86RDMA<a href=\"https:\/\/zhuanlan.zhihu.com\/p\/163104439\/edit#_ftn3\">[3]<\/a>\u6280\u672f\uff0c\u4ece\u800c\u89e3\u51b3\u4e86\u8fd9\u4e00\u95ee\u9898\uff0c\u4f7f\u5f97\u5728\u9ad8\u901f\u7f51\u7edc\u4f20\u8f93\u4e2d\u5bf9CPU\u5b9e\u73b0\u4e86\u5378\u8f7d\uff0c\u540c\u65f6\u63d0\u9ad8\u4e86\u7f51\u7edc\u7684\u5229\u7528\u7387\u3002\u8fd9\u4f7f\u5f97InfiniBand\u7f51\u7edc\u53ef\u4ee5\u5feb\u901f\u8fed\u4ee3\uff0c\u4eceSDR \u768410Gbos DDR 20Gbps QDR 40Gps FDR56Gbps EDR 100Gbps\u53d1\u5c55\u5230\u4eca\u5929\u7684200Gbps\uff0c\u53d7\u76ca\u4e8eRDMA\u6280\u672f\uff0cCPU\u6ca1\u6709\u56e0\u4e3a\u901f\u7387\u7684\u5927\u5e45\u63d0\u5347\u800c\u727a\u7272\u66f4\u591a\u7684\u8d44\u6e90\u7528\u4e8e\u7f51\u7edc\u5904\u7406\u800c\u62d6\u6162\u6574\u4e2aHPC\u6027\u80fd\u7684\u53d1\u5c55\uff0c\u672a\u6765\u5c06\u4f1a\u63a8\u51fa<strong>400bpsG<\/strong>\u7684NDR\u548c<strong>800Gbps<\/strong>\u7684XDR\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/pic4.zhimg.com\/v2-afc5625559ec42080699f2a057a73b93_b.webp?consumer=ZHI_MENG\" alt=\"\"\/><\/figure>\n\n\n\n<p><strong>\u65f6\u5ef6<\/strong>\uff1a\u6b64\u5904\u4e3b\u8981\u5206\u4e3a\u4e24\u90e8\u5206\u8fdb\u884c\u5bf9\u6bd4\uff0c\u4e00\u90e8\u5206\u5728\u4ea4\u6362\u673a\u4e0a\uff0c\u4f5c\u4e3a\u7f51\u7edc\u4f20\u8f93\u6a21\u578b\u4e2d\u7684\u4e8c\u5c42\u6280\u672f\uff0cEthernet\u4ea4\u6362\u673a\u666e\u904d\u91c7\u7528\u4e86MAC\u67e5\u8868\u5bfb\u5740\u548c\u5b58\u50a8\u8f6c\u53d1\u7684\u65b9\u5f0f\uff08\u6709\u90e8\u5206\u4ea7\u54c1\u501f\u9274\u4e86InfiniBand\u7684Cut-though\u6280\u672f\uff09\u7531\u4e8e\u9700\u8981\u8003\u8651\u8bf8\u5982IP\u3001MPLS\u3001QinQ\u7b49\u590d\u6742\u4e1a\u52a1\u7684\u5904\u7406\uff0c\u5bfc\u81f4Ethernet\u4ea4\u6362\u673a\u5904\u7406\u6d41\u7a0b\u8f83\u957f\uff0c\u4e00\u822c\u4f1a\u5728\u82e5\u5e72us\uff08\u652f\u6301cut-though\u7684\u4f1a\u5728200ns\u4ee5\u4e0a\uff09\uff0c\u800cInfiniBand\u4ea4\u6362\u673a\u4e8c\u5c42\u5904\u7406\u975e\u5e38\u7b80\u5355\uff0c\u4ec5\u9700\u8981\u6839\u636e16bit\u7684LID\u5c31\u53ef\u4ee5\u67e5\u5230\u8f6c\u53d1\u8def\u5f84\u4fe1\u606f\uff0c\u540c\u65f6\u91c7\u7528\u4e86Cut-Through<a href=\"https:\/\/zhuanlan.zhihu.com\/p\/163104439\/edit#_ftn4\">[4]<\/a><\/p>\n\n\n\n<p>\u6280\u672f\u5927\u5927\u7f29\u77ed\u4e86\u8f6c\u53d1\u65f6\u5ef6\u81f3100ns\u4ee5\u4e0b\uff0c\u8fdc\u8fdc\u5feb\u4e8eEthernet\u4ea4\u6362\u673a\uff1b\u7f51\u5361\u5c42\u9762\u5982\u524d\u6240\u8ff0\uff0c\u91c7\u7528RDMA\u6280\u672f\uff0c\u7f51\u5361\u8f6c\u53d1\u62a5\u6587\u4e0d\u9700\u8981\u7ecf\u8fc7CPU\uff0c\u5927\u5927\u52a0\u5feb\u4e86\u62a5\u6587\u5728\u5c01\u88c5\u89e3\u5c01\u88c5\u5904\u7406\u7684\u65f6\u5ef6\uff0c\u4e00\u822cInfiniBand\u7684\u7f51\u5361\u6536\u53d1\u65f6\u5ef6\uff08write\uff0csend\uff09\u5728600ns\uff0c\u800c\u57fa\u4e8eEthernet\u4e0a\u7684TCP UDP\u5e94\u7528\u7684\u6536\u53d1\u65f6\u5ef6\u4f1a\u572810us\u5de6\u53f3\uff0c\u76f8\u5dee\u5341\u51e0\u500d\u4e4b\u591a\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/pic4.zhimg.com\/v2-1498582b93500806e6540057ef0b452b_b.webp?consumer=ZHI_MENG\" alt=\"\"\/><\/figure>\n\n\n\n<p><strong>\u53ef\u9760<\/strong>\uff1a\u5728\u9ad8\u6027\u80fd\u8ba1\u7b97\u9886\u57df\uff0c\u4e22\u5305\u91cd\u4f20\u5bf9\u6574\u4f53\u6027\u80fd\u7684\u5f71\u54cd\u975e\u5e38\u5927\uff0c\u6240\u4ee5\u9700\u8981\u4e00\u4e2a\u9ad8\u53ef\u9760\u7684\u7f51\u7edc\u534f\u8bae\u4ece\u673a\u5236\u5c42\u9762\u6765\u4fdd\u8bc1\u7f51\u7edc\u7684\u65e0\u635f\u7279\u6027\uff0c\u4ece\u800c\u5b9e\u73b0\u5176\u9ad8\u53ef\u9760\u7279\u6027\u3002InfiniBand\u662f\u4e00\u4e2a\u5b8c\u6574\u7684\u7f51\u7edc\u534f\u8bae\u6709\u81ea\u5df1\u5b9a\u4e49\u7684\u4e00\u81f3\u56db\u5c42\u683c\u5f0f\uff0c\u62a5\u6587\u5728\u7f51\u7edc\u4e0a\u7684\u6536\u53d1\u662f\u57fa\u4e8e\u7aef\u5230\u7aef\u7684\u6d41\u63a7\u6765\u5b9e\u73b0\u7684\uff0c\u4e5f\u5c31\u662f\u8bf4\u62a5\u6587\u4ece\u53d1\u9001\u7aef\u662f\u5426\u53ef\u4ee5\u53d1\u9001\u662f\u53d7\u63a5\u6536\u7aef\u8c03\u5ea6\u63a7\u5236\u7684\uff0c\u8fd9\u6837\u5c31\u53ef\u4ee5\u4fdd\u8bc1\u62a5\u6587\u4ece\u53d1\u9001\u5230\u63a5\u53d7\u90fd\u4e0d\u4f1a\u51fa\u73b0\u62e5\u585e\uff0c\u8fd9\u6837\u4e0d\u4ec5\u5b9e\u73b0\u4e86\u771f\u6b63\u610f\u4e49\u4e0a\u7684\u65e0\u635f\u7f51\u7edc\uff0c\u540c\u65f6\u7531\u4e8e\u7f51\u7edc\u4e0a\u6ca1\u6709\u62e5\u585e\u800c\u4f7f\u5f97\u4e1a\u52a1\u6d41\u5728InfiniBand\u7684\u7f51\u7edc\u4e0a\u4f20\u8f93\u4e0d\u4f1a\u51fa\u73b0\u7f13\u5b58\u79ef\u7d2f\uff0c\u8fd9\u6837\u65f6\u5ef6\u6296\u52a8\u4e5f\u5c31\u63a7\u5236\u5230\u4e86\u6700\u5c0f\uff0c\u4ece\u800c\u6784\u9020\u4e86\u4e00\u4e2a\u7406\u60f3\u7eaf\u51c0\u7684\u7f51\u7edc\uff1b\u800cEthernet\u6784\u9020\u7684\u7f51\u7edc\u6ca1\u6709\u57fa\u4e8e\u8c03\u5ea6\u7684\u6d41\u63a7\u673a\u5236\uff0c\u5bfc\u81f4\u62a5\u6587\u5728\u53d1\u51fa\u7684\u65f6\u5019\u662f\u4e0d\u80fd\u4fdd\u8bc1\u5bf9\u7aef\u662f\u5426\u4f1a\u51fa\u73b0\u62e5\u585e\u7684\uff0c\u56e0\u6b64\uff0c\u4e3a\u4e86\u80fd\u591f\u5438\u6536\u7f51\u7edc\u5185\u77ac\u65f6\u6d41\u91cf\u7684\u7a81\u7136\u589e\u5927\uff0c\u9700\u8981\u5728\u4ea4\u6362\u5185\u5f00\u8f9f\u591a\u5927\u6570\u5341MB\u7684\u7f13\u5b58\u7a7a\u95f4\u7528\u4e8e\u6682\u65f6\u5b58\u50a8\u8fd9\u4e9b\u62a5\u6587\uff0c\u800c\u7f13\u5b58\u7684\u5b9e\u73b0\u662f\u975e\u5e38\u5360\u7528\u82af\u7247\u9762\u79ef\u7684\uff0c\u8fd9\u4f7f\u5f97\u540c\u7b49\u89c4\u683c\u7684Ethernet\u7684\u4ea4\u6362\u673a\u82af\u7247\u9762\u79ef\u660e\u663e\u5927\u4e8eInfiniBand\u82af\u7247\uff0c\u4e0d\u4ec5\u6210\u672c\u9ad8\u800c\u4e14\u529f\u8017\u4e5f\u4f1a\u66f4\u5927\uff0c\u9664\u6b64\u4e4b\u5916\uff0c\u7531\u4e8e\u6ca1\u6709\u7aef\u5230\u7aef\u7684\u6d41\u63a7\u673a\u5236\uff0c\u5bfc\u81f4\u7f51\u7edc\u5728\u7565\u6781\u7aef\u60c5\u51b5\u4e0b\uff0c\u4f1a\u51fa\u73b0\u7f13\u5b58\u62e5\u585e\u800c\u5bfc\u81f4\u7684\u4e22\u5305\uff0c\u4f7f\u5f97\u6570\u636e\u8f6c\u53d1\u6027\u80fd\u5927\u5e45\u6ce2\u52a8\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/pic4.zhimg.com\/v2-9cfa637e2ea62c9d5c261a1b6c58828f_b.webp?consumer=ZHI_MENG\" alt=\"\"\/><\/figure>\n\n\n\n<p><strong>\u7ec4\u7f51\u65b9\u5f0f\uff1a<\/strong><\/p>\n\n\n\n<p>Ethernet\u7684\u7ec4\u7f51\u65b9\u5f0f\u9700\u8981IP\u914d\u5408ARP\u534f\u8bae\u6765\u81ea\u52a8\u751f\u6210MAC\u8868\u9879\u7684\uff0c\u9700\u8981\u7f51\u7edc\u5185\u7684\u6bcf\u4e2a\u670d\u52a1\u5668\u6765\u5b9a\u65f6\u53d1\u9001\u62a5\u6587\u4fdd\u8bc1\u8868\u9879\u7684\u5b9e\u65f6\u66f4\u65b0\uff0c\u4f17\u6240\u5468\u77e5\uff0c\u7f51\u7edc\u5185\u8282\u70b9\u7684\u589e\u52a0\u5220\u9664\u90fd\u8981\u901a\u77e5\u5230\u7f51\u7edc\u4e2d\u7684\u6bcf\u4e00\u4e2a\u8282\u70b9\uff0c\u5f53\u7f51\u7edc\u5185\u7684\u8282\u70b9\u6570\u91cf\u589e\u52a0\u5230\u4e00\u5b9a\u7a0b\u5ea6\u7684\u60c5\u51b5\u4e0b\uff0c\u8fd9\u6837\u7f51\u7edc\u4f1a\u4ea7\u751f\u5e7f\u64ad\u98ce\u66b4\u4ece\u800c\u4f7f\u5f97\u7f51\u7edc\u5e26\u5bbd\u88ab\u4e25\u91cd\u6d6a\u8d39\uff0c\u56e0\u6b64\u9700\u8981\u5f15\u5165Vlan\u673a\u5236\u5212\u5206\u865a\u62df\u7f51\u7edc\uff0c\u9650\u5236\u7f51\u7edc\u89c4\u6a21\uff0c\u800c\u7531\u4e8eEthnernet\u7f51\u7edc\u672c\u8eab\u8868\u9879\u5b66\u4e60\u673a\u5236\u7684\u4e0d\u8db3\u4f1a\u5bfc\u81f4\u73af\u8def\u7f51\u7edc\uff0c\u53c8\u5fc5\u987b\u5f15\u5165STP\u7b49\u534f\u8bae\u4fdd\u8bc1\u7f51\u7edc\u8f6c\u53d1\u8def\u5f84\u4e0d\u4f1a\u51fa\u73b0\u73af\u8def\uff0c\u589e\u52a0\u4e86\u7f51\u7edc\u7684\u914d\u7f6e\u7684\u590d\u6742\u5ea6\u3002\u540c\u65f6\uff0c\u968f\u7740SDN\u6280\u672f\u5174\u8d77\uff0c\u7531\u4e8eEthernet\u7f51\u7edc\u8bbe\u5b9a\u4e4b\u521d\u7684\u7406\u5ff5\u662f\u4ee5\u517c\u5bb9\u4e3a\u57fa\u7840\u7684\u7f18\u6545\uff0c\u57fa\u56e0\u4e2d\u5c31\u4e0d\u5177\u5907SDN\u7684\u7279\u8d28\uff0c\u5bfc\u81f4SDN\u90e8\u7f72\u5728ethernet\u7f51\u7edc\u4e0a\u9700\u8981\u91cd\u65b0\u6539\u53d8\u62a5\u6587\u683c\u5f0f\uff08VXLAN<a href=\"https:\/\/zhuanlan.zhihu.com\/p\/163104439\/edit#_ftn5\">[5]<\/a>\uff09\u6216\u8005\u6539\u53d8\u4ea4\u6362\u673a\u7684\u8f6c\u53d1\u673a\u5236\uff08openflow<a href=\"https:\/\/zhuanlan.zhihu.com\/p\/163104439\/edit#_ftn6\">[6]<\/a>\uff09\u8fd9\u6837\u7684\u65b9\u5f0f\u5bf9Ethernet\u8fdb\u884c\u6539\u9020\u6765\u6ee1\u8db3SDN\u7684\u8981\u6c42\uff1b\u8fd9\u4e00\u70b9\u5bf9\u4e8eInfiniBand\u6765\u8bf4\u662f\u5929\u751f\u5177\u5907\u4e86SDN\u7406\u5ff5\u7684\uff0c\u6bcf\u4e2aInfiniBand\u7684\u4e8c\u5c42\u7f51\u7edc\u5185\u6709\u4f1a\u6709\u4e00\u4e2a\u5b50\u7f51\u7ba1\u7406\u5668\u6765\u914d\u7f6e\u7f51\u7edc\u5185\u8282\u70b9\u7684ID\uff08LocalID\uff09\uff0c\u7136\u540e\u901a\u8fc7\u63a7\u5236\u9762\u7edf\u4e00\u8ba1\u7b97\u8f6c\u53d1\u8def\u5f84\u4fe1\u606f\uff0c\u4e0b\u53d1\u81f3InfiniBand\u4ea4\u6362\u4e0a\uff0c\u8fd9\u6837\u7ec4\u6210\u4e00\u4e2aInfiniBand\u7684\u4e8c\u5c42\u7ec4\u7f51\u9700\u8981\u505a\u4efb\u4f55\u914d\u7f6e\u65e2\u53ef\u4ee5\u5b8c\u6210\u7f51\u7edc\u914d\u7f6e\uff0c\u540c\u65f6\u6ca1\u6709\u6cdb\u6d2a\u7684\u95ee\u9898\uff0c\u4e5f\u7701\u53bb\u4e86Vlan\u548c\u73af\u7f51\u7834\u73af\u7684\u64cd\u4f5c\uff0c\u53ef\u4ee5\u8f7b\u677e\u90e8\u7f72\u4e00\u4e2a\u89c4\u6a21\u51e0\u4e07\u53f0\u670d\u52a1\u5668\u7684\u8d85\u5927\u4e8c\u5c42\u7f51\u7edc\u3002\u8fd9\u662fEthernet\u6240\u4e0d\u80fd\u5177\u5907\u7684\u3002<\/p>\n\n\n\n<p>\u867d\u7136\uff0c\u4ee5\u4e0a\u51e0\u4e2a\u89d2\u5ea6\u662f\u4eceInfiniBand\u7684\u4f18\u52bf\u6765\u8bf4\u660e\u7684\uff0c\u4f46\u662f\uff0c\u4e0d\u53ef\u5426\u8ba4\u7684\u4e8b\uff0cEthnernet\u672c\u8eab\u6709\u66f4\u52a0\u5bbd\u6cdb\u7684\u901f\u7387\u652f\u6301\u4ece10Mbps\u5230400Gbps\uff0c\u6709\u66f4\u591a\u4f4e\u6210\u672c\u7684\u8bbe\u5907\u652f\u6301\uff0c\u4f7f\u5176\u5728\u65f6\u5ef6\u3001\u5e26\u5bbd\u3001\u53ef\u9760\u6027\u8981\u6c42\u4e0d\u9ad8\u7684\u573a\u666f\u4e2d\uff0c\u5f97\u5230\u66f4\u52a0\u5e7f\u6cdb\u7684\u5e94\u7528\u3002\u7531\u4e8e\u5176\u517c\u5bb9\u6027\u6269\u5c55\u4e86RDMA\u6280\u672f\uff08RoCE\uff09\uff0c\u4f7f\u5f97\u4e0d\u4ec5\u5177\u5907\u4e86\u9ad8\u5e26\u5bbd\uff0c\u540c\u65f6\u4e5f\u53ef\u4ee5\u521d\u6b65\u5177\u5907\u65e0\u635f\u7f51\u7edc\u7684\u7279\u8d28\uff0c\u56e0\u6b64\uff0c\u8fd1\u4e9b\u5e74\u6765\u5728\u9ad8\u6027\u80fd\u8ba1\u7b97\u9886\u57df\u4e2d\u4e5f\u51fa\u73b0Ethernet\u7f51\u7edc\u7684\u8eab\u5f71\uff0c\u8fd9\u4e5f\u4ece\u4e00\u4e2a\u4fa7\u9762\u770b\u51faEthernet\u7f51\u7edc\u8d85\u5f3a\u7684\u9002\u5e94\u6027<a href=\"https:\/\/zhuanlan.zhihu.com\/p\/163104439\/edit#_ftn7\">[7]<\/a>\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/pic3.zhimg.com\/v2-1430de568844e42dd5807446a2849332_b.webp?consumer=ZHI_MENG\" alt=\"\"\/><\/figure>\n\n\n\n<p>\u603b\u7ed3\u4e00\u4e0b\uff1aEthernet\u548cInfiniBand\u662f\u7279\u70b9\u9c9c\u660e\u7684\u4e24\u79cd\u4e0d\u540c\u7684\u4e92\u8fde\u6280\u672f\uff0c\u5404\u6709\u6240\u957f\uff0c\u90fd\u6709\u81ea\u5df1\u72ec\u5230\u770b\u5bb6\u672c\u9886\uff0c\u5728\u5404\u81ea\u7684\u5e94\u7528\u9886\u57df\u4e2d\u4e0d\u65ad\u53d1\u5c55\uff0c\u589e\u5f3a\u4e92\u8054\u7f51\u7684\u6027\u80fd\u4f18\u5316\u4e92\u8fde\u7684\u4f53\u9a8c\u3002<\/p>\n\n\n\n<p><br>References:<\/p>\n\n\n\n<p><a href=\"https:\/\/zhuanlan.zhihu.com\/p\/163104439\/edit#_ftnref1\">[1]<\/a>&nbsp;\u767e\u5ea6\u767e\u79d1 \u4ee5\u592a\u7f51\u6280\u672f<\/p>\n\n\n\n<p><a href=\"https:\/\/zhuanlan.zhihu.com\/p\/163104439\/edit#_ftnref2\">[2]<\/a>&nbsp;\u767e\u5ea6\u767e\u79d1 DMA\uff08\u76f4\u63a5\u5b58\u50a8\u5668\u8bbf\u95ee\uff09<\/p>\n\n\n\n<p><a href=\"https:\/\/zhuanlan.zhihu.com\/p\/163104439\/edit#_ftnref3\">[3]<\/a>&nbsp;\u767e\u5ea6\u767e\u79d1RDMA<\/p>\n\n\n\n<p><a href=\"https:\/\/zhuanlan.zhihu.com\/p\/163104439\/edit#_ftnref4\">[4]<\/a>&nbsp;Comparison Between Store-and-Forward Switching and Cut-Through Switching<\/p>\n\n\n\n<p><a href=\"https:\/\/zhuanlan.zhihu.com\/p\/163104439\/edit#_ftnref5\">[5]<\/a>&nbsp;Virtual eXtensible Local Area Network (VXLAN): A Framework for Overlaying Virtualized Layer 2 Networks over Layer 3 Networks<\/p>\n\n\n\n<p><a href=\"https:\/\/zhuanlan.zhihu.com\/p\/163104439\/edit#_ftnref6\">[6]<\/a>&nbsp;OpenFlow Switch Specification<\/p>\n\n\n\n<p><a href=\"https:\/\/zhuanlan.zhihu.com\/p\/163104439\/edit#_ftnref7\">[7]<\/a>&nbsp;InfiniBand Still Tops in Supercomputing<\/p>\n","protected":false},"excerpt":{"rendered":"<p>https:\/\/www.zhihu.com\/tardis\/bd\/art\/163104439 https:\/\/b &#8230; <a title=\"\u8c08\u8c08InfiniBand\u548cEthernet\u7f51\u7edc\u7684\u5dee\u5f02\" class=\"read-more\" href=\"https:\/\/airy.cn\/WordPress\/?p=1268\" aria-label=\"\u9605\u8bfb \u8c08\u8c08InfiniBand\u548cEthernet\u7f51\u7edc\u7684\u5dee\u5f02\">\u9605\u8bfb\u66f4\u591a<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_kadence_starter_templates_imported_post":false,"footnotes":""},"categories":[2],"tags":[],"class_list":["post-1268","post","type-post","status-publish","format-standard","hentry","category-airy-tech"],"_links":{"self":[{"href":"https:\/\/airy.cn\/WordPress\/index.php?rest_route=\/wp\/v2\/posts\/1268","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/airy.cn\/WordPress\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/airy.cn\/WordPress\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/airy.cn\/WordPress\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/airy.cn\/WordPress\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1268"}],"version-history":[{"count":1,"href":"https:\/\/airy.cn\/WordPress\/index.php?rest_route=\/wp\/v2\/posts\/1268\/revisions"}],"predecessor-version":[{"id":1269,"href":"https:\/\/airy.cn\/WordPress\/index.php?rest_route=\/wp\/v2\/posts\/1268\/revisions\/1269"}],"wp:attachment":[{"href":"https:\/\/airy.cn\/WordPress\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1268"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/airy.cn\/WordPress\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1268"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/airy.cn\/WordPress\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1268"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}