{"id":48873,"date":"2018-03-12T14:02:34","date_gmt":"2018-03-12T06:02:34","guid":{"rendered":"http:\/\/www.homejamesfinance.com\/?p=48873"},"modified":"2018-03-12T14:02:34","modified_gmt":"2018-03-12T06:02:34","slug":"%e5%82%a8%e8%bf%85%e4%b8%baglusterfs%e5%ae%8c%e5%96%84rdma%e4%bc%a0%e8%be%93%e5%bc%95%e6%93%8e","status":"publish","type":"post","link":"https:\/\/www.homejamesfinance.com\/p\/48873.html","title":{"rendered":"\u50a8\u8fc5\u4e3aGlusterFS\u5b8c\u5584RDMA\u4f20\u8f93\u5f15\u64ce"},"content":{"rendered":"

\u5173\u4e8e GlusterFS<\/strong><\/p>\n

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\u4e0a\u6d77\u50a8\u8fc5\u4fe1\u606f\u6280\u672f\u6709\u9650\u516c\u53f8\uff08<http:\/\/www.storswift.com>\uff09\u4f5c\u4e3a\u9886\u5148\u7684\u5206\u5e03\u5f0f\u5b58\u50a8\u4ea7\u54c1\u548c\u9ad8\u6027\u80fd\u8ba1\u7b97\/AI\u8ba1\u7b97\u57fa\u7840\u67b6\u6784\u4f9b\u5e94\u5546\uff0c\u4e5f\u79ef\u6781\u53c2\u4e0e\u5230GlusterFS\u9879\u76ee\u7684\u5f00\u53d1\uff0c\u57fa\u4e8e\u5b83\u6253\u9020\u4e86\u6570\u636e\u4e2d\u5fc3\u7ea7\u7684\u5206\u5e03\u5f0f\u5b58\u50a8\u4ea7\u54c1\uff0c\u4e5f\u4e3a\u793e\u533a\u8d21\u732e\u4e86\u8bb8\u591a\u6a21\u5757\u7684\u5173\u952e\u4ee3\u7801\uff0c\u6bd4\u5982Windows\u5ba2\u6237\u7aef\u548cRDMA\u6a21\u5757\u7684\u4ee3\u7801\u3002<\/p>\n

\u7f18\u8d77RDMA<\/strong><\/p>\n

\u4f20\u7edf\u7684\u7f51\u7edc\u5e94\u7528\uff08\u5305\u62ec\u5206\u5e03\u5f0f\u6587\u4ef6\u5b58\u50a8\uff09\uff0c\u90fd\u662f\u901a\u8fc7TCP\/IP\u534f\u8bae\u6765\u4f20\u8f93\u6570\u636e\u3002TCP\/IP\u7ecf\u8fc7\u4e86\u51e0\u5341\u5e74\u7684\u53d1\u5c55\uff0c\u6210\u719f\u53ef\u9760\uff0c\u4f46\u56e0\u4e3a\u5176\u4e3b\u8981\u8fd0\u884c\u5728\u4e0d\u53ef\u9760\u7684\u7269\u7406\u94fe\u8def\uff0c\u5177\u6709\u590d\u6742\u7684\u5c42\u6b21\u7ed3\u6784\uff0c\u4ece\u8bde\u751f\u4e4b\u65e5\u8d77\uff0c\u5c31\u6709\u7740\u6027\u80fd\u65b9\u9762\u7684\u5148\u5929\u4e0d\u8db3\u3002\u7f51\u7edc\u6570\u636e\u5305\u8981\u7ecf\u8fc7\u7f51\u5361\u9a71\u52a8\u3001\u64cd\u4f5c\u7cfb\u7edf\u5185\u6838\u7b49\u8f6f\u4ef6\u6a21\u5757\u7684\u5c42\u5c42\u5904\u7406\uff0c\u624d\u80fd\u88ab\u5e94\u7528\u7a0b\u5e8f\u4f7f\u7528\uff0c\u65f6\u5ef6\u8f83\u5927\uff1b\u6570\u636e\u5305\u4e5f\u5728\u5185\u5b58\u4e2d\u6765\u56de\u79fb\u52a8\uff0c\u989d\u5916\u6d88\u8017\u4e86\u5927\u91cf\u7684\u7cfb\u7edf\u8d44\u6e90\u3002\u5982\u4eca\u7684\u8ba1\u7b97\u673a\u786c\u4ef6\u914d\u7f6e\u8d8a\u6765\u8d8a\u9ad8\uff0c\u66f4\u5feb\u7684\u591a\u6838CPU\uff0c\u5e26\u5bbd\u5927\u65f6\u5ef6\u4f4e\u7684NVMe SSD\uff0c\u867d\u7136\u90fd\u80fd\u6781\u5927\u63d0\u5347\u5b58\u50a8\u6027\u80fd\uff0c\u4f46\u6700\u7ec8\u7684\u74f6\u9888\u5f80\u5f80\u5361\u5728\u6b65\u5c65\u8e52\u8dda\u7684\u4f20\u7edf\u7f51\u7edc\u8bbe\u5907\uff0c\u5373\u4f7f\u666e\u904d\u91c7\u7528\u4e07\u5146\u4ee5\u592a\u7f51\uff0c\u65e0\u8bba\u662f\u5e26\u5bbd\u8fd8\u662f\u5ef6\u65f6\uff0c\u90fd\u65e0\u6cd5\u6ee1\u8db3\u9ad8\u6027\u80fd\u8ba1\u7b97\u7b49\u5bf9\u6027\u80fd\u6709\u7740\u82db\u523b\u8981\u6c42\u7684\u5e94\u7528\u73af\u5883\u7684\u9700\u8981\u3002<\/p>\n

RDMA\u7684\u5168\u79f0\u4e3aRemote Direct Memory Access\uff0c\u5b57\u9762\u7684\u610f\u601d\u5c31\u662f\u8fdc\u7a0b\u76f4\u63a5\u8bbf\u95ee\u5185\u5b58\uff0c\u987e\u540d\u601d\u4e49\uff0c\u5c31\u662f\u8ba9\u4e00\u53f0\u8ba1\u7b97\u673a\u80fd\u591f\u76f4\u63a5\u8bbf\u95ee\u53e6\u5916\u4e00\u53f0\u8ba1\u7b97\u673a\u7684\u5185\u5b58\u3002\u8fd9\u79cd\u6280\u672f\u65e0\u9700\u64cd\u4f5c\u7cfb\u7edf\u53c2\u4e0e\uff0c\u80fd\u8ba9\u5e94\u7528\u7a0b\u5e8f\u76f4\u63a5\u8bfb\u5199\u7f51\u7edc\u6536\u53d1\u7684\u6570\u636e\uff0c\u4ece\u800c\u6781\u5927\u5730\u51cf\u5c11\u4e86\u5185\u5b58\u62f7\u8d1d\u64cd\u4f5c\uff0c\u4e5f\u907f\u514d\u4e86\u4e0d\u540c\u7684\u8f6f\u4ef6\u6a21\u5757\u5bf9\u6570\u636e\u7684\u53cd\u590d\u5904\u7406\uff0c\u5bf9\u6027\u80fd\u7684\u63d0\u5347\u4f5c\u7528\u662f\u6bcb\u5eb8\u7f6e\u7591\u7684\u3002<\/p>\n

$\"\"$ <\/a><\/p>\n

\u76ee\u524d\uff0c\u80fd\u652f\u6301RDMA\u6280\u672f\u7684\u7269\u7406\u7f51\u7edc\u4e3b\u8981\u6709Infiniband\uff08\u7b80\u79f0IB\uff09\u3001Omni-Path\u548c\u4ee5\u592a\u7f51\u3002<\/p>\n

\u5176\u4e2d\uff0cIB\u4e3a\u6700\u4e3b\u6d41\u7684\u6280\u672f\uff0cRDMA\u5e02\u573a\u76ee\u524d\u7684\u5784\u65ad\u8005\u3002\u76ee\u524dIB\u7f51\u5361\u548c\u4ea4\u6362\u673a\u7684\u4f9b\u5e94\u5546\u4e3b\u8981\u662fMellanox\uff0c\u5728\u9ad8\u6027\u80fd\u8ba1\u7b97\uff08HPC\uff09\u9886\u57df\uff0cIB\u662f\u6700\u4e3a\u5e7f\u6cdb\u4f7f\u7528\u7684\u9ad8\u901f\u7f51\u7edc\u8bbe\u5907\u3002<\/p>\n

Omni-Path\u4e3aIntel\u6536\u8d2dQlogic\u4e4b\u540e\u7814\u5236\u51fa\u6765\u7684\u4e0b\u4e00\u4ee3\u9ad8\u6027\u80fd\u7f51\u7edc\u67b6\u6784\uff0c\u5178\u578b\u901f\u5ea6\u4e3a100Gbps\uff0c\u4e14Intel\u5728\u90e8\u5206CPU\u4e0a\u9762\u76f4\u63a5\u7ee7\u627f\u4e86\u76f8\u5173\u7684\u63a5\u53e3\uff0c\u53ef\u89c1Intel\u5f00\u62d3\u76f8\u5173\u5e02\u573a\u7684\u51b3\u5fc3\u3002\u4f46Omni-Path\u7684\u5e94\u7528\u624d\u5f00\u59cb\u8d77\u6b65\uff0c\u5e02\u573a\u5360\u6709\u7387\u8fdc\u6ca1\u6709IB\u90a3\u4e48\u5927\u3002<\/p>\n

\u73b0\u5728\u7684\u9ad8\u901f\u4ee5\u592a\u7f51\uff08\u6bd4\u598225Gb\u53ca\u5176\u4ee5\u4e0a\u7684\u7f51\u5361\uff09\uff0c\u9664\u4e86\u652f\u6301\u4f20\u7edf\u7684TCP\/IP\u4e4b\u5916\uff0c\u4e5f\u652f\u6301RDMA\u65b9\u5f0f\u3002\u57fa\u4e8e\u4ee5\u592a\u7f51\u7684RDMA\u6280\u672f\u6709\u4e24\u79cd\uff0cRoCE\u548ciWRAP\u3002RoCE\u7684\u4e3b\u8981\u5382\u5546\u4e3aMellanox\u548cBroadcom\uff08Avago\uff09\uff0c\u5b83\u5bf9\u4ea4\u6362\u673a\u7684\u8981\u6c42\u8f83\u9ad8\uff1biWARP\u7684\u4e3b\u8981\u5382\u5546\u4e3aIntel\uff0c\u5bf9\u4ea4\u6362\u673a\u7684\u8981\u6c42\u8f83\u4f4e\u3002<\/p>\n

\u50a8\u8fc5\u5bf9GlusterFS\u7684RDMA\u6a21\u5757\u7684\u6539\u8fdb<\/strong><\/p>\n

\u56e0\u4e3aRDMA\u6280\u672f\u7684\u9ad8\u5e26\u5bbd\u548c\u4f4e\u5ef6\u8fdf\uff0cGlusterFS\u5728\u65e9\u671f\u7684\u65f6\u5019\u4fbf\u52a0\u5165\u4e86\u5bf9RDMA\u7684\u652f\u6301\u3002\u4e0d\u8fc7\uff0cGlusterFS\u8fd8\u662f\u4ee5\u5728\u4f20\u7edf\u7684TCP\/IP\u7f51\u7edc\u4e2d\u8fd0\u884c\u4e3a\u4e3b\uff0c\u5982\u679c\u91c7\u7528RDMA\u6a21\u5f0f\uff0c\u5728HPC\u7b49\u9886\u57df\u6301\u7eed\u5730\u5927\u89c4\u6a21\u8bfb\u5199\uff0c\u4f1a\u9047\u5230\u8fde\u63a5\u65ad\u6389I\/O\u4e0d\u80fd\u6301\u7eed\u8fdb\u884c\u7b49\u8bf8\u591a\u95ee\u9898\uff0c\u6027\u80fd\u7684\u6296\u52a8\u4e5f\u8f83\u5927\u3002\u9488\u5bf9\u76ee\u5f55\u5143\u6570\u636e\u7684\u64cd\u4f5c\uff08\u6bd4\u5982\u5217\u76ee\u5f55\u3001\u5220\u9664\u76ee\u5f55\u3001\u67e5\u627e\u6587\u4ef6\u7b49\uff09\uff0c\u8868\u73b0\u51fa\u6765\u7684\u95ee\u9898\u66f4\u591a\u3002<\/p>\n

\u9488\u5bf9\u4e0a\u8ff0\u95ee\u9898\uff0c\u50a8\u8fc5\u7684\u7814\u53d1\u56e2\u961f\u5bf9GlusterFS\u7684RDMA\u6a21\u5757\u4ee5\u53ca\u76f8\u5173\u4ee3\u7801\u505a\u4e86\u5168\u9762\u7684\u68b3\u7406\uff0c\u4f18\u5316\u4e86\u8bfb\u5199\u6d41\u7a0b\uff0c\u6539\u8fdb\u4e86\u76ee\u5f55\u5143\u6570\u636e\u7684\u67e5\u627e\u65b9\u5f0f\uff0c\u5e76\u9488\u5bf9\u5e76\u53d1\u64cd\u4f5c\u65f6\u4e0d\u89c4\u8303\u7684\u9501\u64cd\u4f5c\u5bfc\u81f4\u7684race condition\u95ee\u9898\u8fdb\u884c\u4e86\u5168\u9762\u6392\u67e5\u3002\u65b0\u7684\u4ee3\u7801\u7ecf\u8fc7\u4e86\u5927\u89c4\u6a21\u7684\u5185\u90e8\u6d4b\u8bd5\uff0c\u4ee5\u53ca\u5728\u57fa\u56e0\u6d4b\u5e8f\u3001\u89c6\u9891\u5206\u6790\u3001\u6750\u6599\u8ba1\u7b97\u7b49\u591a\u4e2a\u5ba2\u6237\u5904\u7684\u957f\u65f6\u95f4\u68c0\u9a8c\uff0c\u53ef\u4ee5\u7a33\u5b9a\u5730\u8fd0\u884c\u5728\u590d\u6742\u7684\u5546\u7528\u73af\u5883\u4e2d\uff0c\u5c24\u5176\u9002\u5408HPC\u9886\u57df\u7684\u5404\u9879\u8ba1\u7b97\u573a\u666f\u3002<\/p>\n

\u9664\u4e86\u7a33\u5b9a\u6027\uff0c\u5728\u6027\u80fd\u65b9\u9762\uff0c\u4f7f\u7528\u50a8\u8fc5\u6539\u8fdb\u7248\u672c\u7684GlusterFS\uff0c\u57fa\u4e8e\u540c\u6837\u7684\u786c\u4ef6\uff0c\u5176\u5e76\u53d1\u8bfb\u5199\u6027\u80fd\u4e0d\u4ec5\u6bd4TCP\/IP\u6a21\u5f0f\u5feb3-5\u500d\uff0c\u800c\u4e14\u7efc\u5408\u6027\u80fd\u5b8c\u5168\u53ef\u4ee5\u548cLustre\u6587\u4ef6\u7cfb\u7edf\u7684\u6027\u80fd\u6297\u8861\u3002\u7531\u4e8eGlusterFS\u6bd4\u8d77Lustre\u6709\u66f4\u591a\u7684\u7279\u6027\uff0c\u5305\u62ec\u6570\u636e\u5197\u4f59\u6027\u7b49HA\u7279\u6027\uff0c\u4e14\u4e0d\u4f9d\u8d56\u4e8e\u6602\u8d35\u7684\u5143\u6570\u636e\u670d\u52a1\u5668\uff0c\u6240\u4ee5\uff0c\u8be5\u65b9\u6848\u5177\u6709\u6bd4Lustre\u66f4\u5f3a\u7684\u7ade\u4e89\u529b\u3002<\/p>\n

\u9488\u5bf9\u5177\u6709\u5143\u6570\u636e\u670d\u52a1\u5668\u7684\u5206\u5e03\u5f0f\u6587\u4ef6\u7cfb\u7edf\uff0cGlusterFS\u91c7\u7528\u4e86\u53bb\u4e2d\u6027\u5316\u7684\u67b6\u6784\uff0c\u5b8c\u5168\u5c4f\u853d\u4e86\u5143\u6570\u636e\u670d\u52a1\u5668\u3002\u8fd9\u79cd\u67b6\u6784\u5e26\u6765\u4e86\u66f4\u597d\u7684\u6570\u636e\u53ef\u9760\u6027\uff0c\u4e14\u66f4\u5bb9\u6613\u7ef4\u62a4\uff0c\u4f46\u4e5f\u6709\u4e00\u5b9a\u7684\u7f3a\u70b9\uff0c\u4e3b\u8981\u8868\u73b0\u5728\u76ee\u5f55\u64cd\u4f5c\u8f83\u6162–\u6bd5\u7adf\u5217\u76ee\u5f55\u7b49\u547d\u4ee4\uff0c\u4e0d\u80fd\u5728\u5143\u6570\u636e\u670d\u52a1\u5668\u4e2d\u76f4\u63a5\u83b7\u53d6\uff0c\u800c\u9700\u8981\u904d\u5386\u6bcf\u4e2a\u5b58\u50a8\u8282\u70b9\u6765\u83b7\u53d6\u5185\u5bb9\u3002\u50a8\u8fc5\u5728\u6539\u8fdbRDMA\u4ee3\u7801\u7684\u540c\u65f6\uff0c\u4e5f\u5bf9GlusterFS\u7684\u76f8\u5173\u4ee3\u7801\u67b6\u6784\u505a\u4e86\u4f18\u5316\uff0c\u5bf9\u4e8e\u5217\u76ee\u5f55\u7b49\u547d\u4ee4\uff0c\u5176\u6027\u80fd\u6709\u7740\u8f83\u5927\u7684\u63d0\u5347\uff0c\u751a\u81f3\u5728\u96c6\u7fa4\u786c\u76d8\u8f83\u591a\u7684\u65f6\u5019\uff0c\u901f\u5ea6\u80fd\u63d0\u9ad8\u4e00\u4e2a\u6570\u91cf\u7ea7\u4ee5\u4e0a\uff0c\u5f7b\u5e95\u6539\u53d8\u4e86\u90e8\u5206\u7528\u6237\u5bf9GlusterFS\u5728\u5143\u6570\u636e\u64cd\u4f5c\u65b9\u9762\u4f53\u9a8c\u4e0d\u4f73\u7684\u5370\u8c61\u3002<\/p>\n

\u50a8\u8fc5\u57fa\u4e8eRDMA\u7684HPC\u5b58\u50a8\u7684\u5b8c\u6574\u65b9\u6848<\/strong><\/p>\n

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$\"\"$ <\/a><\/p>\n

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