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<\/p>\n
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$\"\"$ <\/p>\n
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$\"\"$ <\/p>\n
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1\u3001\u9ad8\u7f16\/\u89e3\u7801\u901f\u5ea6\uff1b<\/p>\n
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2.1\u9ad8\u7f16\/\u89e3\u7801\u901f\u5ea6<\/strong><\/span><\/div>\n
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\u6839\u636eCPU\u7684\u7279\u6027\u81ea\u52a8\u9009\u62e9\u6700\u4f18\u7684\u6307\u4ee4\u96c6\u8fdb\u884c\u52a0\u901f\u3002\u4e0a\u6587\u63d0\u5230\uff0c\u4f9d\u8d56\u4e8eSIMD\u6280\u672fRS\u7801\u7f16\u7801\u6027\u80fd\u6709\u4e86\u5927\u5e45\u5ea6\u7684\u63d0\u9ad8\u3002\u5176\u4e2d\uff0c\u6211\u4eec\u53ef\u4ee5\u5229\u7528\u591a\u79cd\u6307\u4ee4\u96c6\u6269\u5c55\u4ee5\u4f9b\u52a0\u901f\uff0c\u5f15\u64ce\u5e94\u8be5\u80fd\u591f\u81ea\u4e3b\u53d1\u73b0\u6700\u4f18\u89e3<\/p>\n
\u4e0d\u4e9a\u4e8e\u76ee\u524d\u6700\u51fa\u8272\u7684\u51e0\u6b3e\u5f15\u64ce\u7684\u6027\u80fd\u8868\u73b0\uff08\u8be6\u89c1\u7b2c\u4e09\u7ae0\u8457\u540d\u5f15\u64ce\u5bf9\u6bd4\uff09<\/p>\n
\u901a\u8fc7SIMD\u52a0\u901f\uff0c\u6027\u80fd\u4f1a\u6709\u5927\u5e45\u5ea6\u6500\u5347\u3002\u6211\u4eec\u8fd8\u53ef\u4ee5\u5c06\u9010\u5b57\u8282\u67e5\u8868\uff08\u4e0b\u79f0\u57fa\u672c\u65b9\u6cd5\uff09\u7684\u7f16\u7801\u901f\u5ea6\u4e0e\u5229\u7528SIMD\u6280\u672f\u52a0\u901f\u7684\u7f16\u7801\u901f\u5ea6\u505a\u5bf9\u6bd4\uff0c\u4e24\u8005\u5e94\u8be5\u6709\u6570\u500d\u7684\u5dee\u8ddd<\/p>\n
\u7f16\/\u89e3\u7801\u901f\u5ea6\u7a33\u5b9a\uff0c\u5bf9\u4e8e\u4e0d\u540c\u5c3a\u5bf8\u7684\u6570\u636e\u5757\u4f1a\u6709\u76f8\u8fd1\u7684\u6027\u80fd\u8868\u73b0\u3002\u7531\u4e8e\u7cfb\u7edf\u7f13\u5b58\u7684\u5f71\u54cd\uff0c\u5f53\u88ab\u7f16\u7801\u6570\u636e\u7684\u5927\u5c0f\u548c\u7f13\u5b58\u5927\u5c0f\u76f8\u5f53\u65f6\uff0c\u7f16\u7801\u5e94\u8be5\u5177\u6709\u6700\u5feb\u7684\u901f\u5ea6\u3002\u5f53\u7f16\u7801\u6570\u636e\u7684\u5927\u5c0f\u5927\u4e8e\u7f13\u5b58\u5927\u5c0f\u65f6\uff0c\u5185\u5b58\u5e26\u5bbd\u6210\u4e3a\u7f16\u7801\u901f\u5ea6\u7684\u74f6\u9888\uff0c\u6587\u4ef6\u5927\u5c0f\u548c\u7f16\u7801\u65f6\u95f4\u5448\u73b0\u8fd1\u4f3c\u7ebf\u6027\u5173\u7cfb\u3002\u8fd9\u6837\uff0c\u6570\u636e\u7f16\u7801\u65f6\u95f4\u662f\u53ef\u9884\u671f\u7684\uff0c\u7528\u6237\u7684\u670d\u52a1\u8d28\u91cf\u4e5f\u662f\u53ef\u4fdd\u969c\u7684\u3002\u5728\u5b9e\u9645\u4e2d\uff0c\u6211\u4eec\u5bf9\u4e8e\u5927\u6587\u4ef6\u8fdb\u884c\u5b9a\u957f\u5206\u5757\uff0c\u4f9d\u6b21\u7f16\u7801\uff0c\u5206\u5757\u5927\u5c0f\u548c\u7f13\u5b58\u5927\u5c0f\u4fdd\u6301\u4e00\u5b9a\u5173\u7cfb\u3002<\/p>\n
\u4e0b\u56fe\u5c55\u793a\u4e86\u572810+4\u7b56\u7565\u4e0b\uff0c\u4e0d\u540c\u5927\u5c0f\u7684\u6570\u636e\u5757\u7684\u7f16\u7801\u901f\u5ea6\u53d8\u5316\u8d8b\u52bf[2]\uff1a<\/p>\n
\u6ce8\uff1a<\/p>\n
\u6d4b\u8bd5\u5e73\u53f0\uff1aMacBookPro(Retina,13-inch,Mid2014)\uff0c2.6GHzi5-4278U(3MBL3CacheSize),8GB1600MHzDDR3<\/p>\n
\u7f16\/\u89e3\u7801\u901f\u5ea6\u8ba1\u7b97\u516c\u5f0f:\u5728k+m\u7b56\u7565\u4e0b\uff0c\u6bcf\u4e00\u4e2a\u6570\u636e\u5757\u7684\u5c3a\u5bf8\u8ba1\u4f5cs,\u7f16\/\u89e3\u7801m\u4e2a\u6570\u636e\u5757\u7684\u8017\u65f6\u8ba1\u4f5ct,\u5219\u901f\u5ea6=(k*s)\/t<\/p>\n
\u6d4b\u8bd5\u65b9\u6cd5\uff1a\u5728\u5185\u5b58\u4e2d\u751f\u6210\u968f\u673a\u6570\u636e\uff0c\u8fd0\u884c\u82e5\u5e72\u6b21\u7f16\uff0f\u89e3\u7801\uff0c\u53d6\u5e73\u5747\u503c<\/p>\n
\u5206\u522b\u6267\u884c\u4e86avx2\u6307\u4ee4\u96c6,ssse3\u6307\u4ee4\u96c6,\u57fa\u672c\u65b9\u6cd5(base)\u8fd9\u4e09\u79cd\u7f16\u7801\u65b9\u6848<\/p>\n
\u88ab\u7f16\u7801\u6587\u4ef6\u5c3a\u5bf8\u6307\uff0c\u6bcf\u4e00\u4e2a\u6570\u636e\u5757\u7684\u5c3a\u5bf8\u4e0e\u603b\u7684\u6570\u636e\u5757\u4e2a\u6570\u7684\u4e58\u79ef\uff0c\u5373\u539f\u59cb\u6570\u636e\u7684\u603b\u5927\u5c0f<\/p>\n
\u4f5c\u4e3a\u5bf9\u6bd4\uff0c\u5229\u7528go\u8bed\u8a00\u81ea\u5e26\u7684copy\u51fd\u6570\uff08copy\uff09\uff0c\u5bf9k\u4e2a\u6570\u636e\u5757\u8fdb\u884c\u5185\u5b58\u62f7\u8d1d\u3002copy\u540c\u6837\u4f7f\u7528\u4e86SIMD\u6280\u672f\u8fdb\u884c\u52a0\u901f<\/p>\n
$\"\"$ <\/p>\n
\u53e6\u5916\uff0c\u89e3\u7801\u901f\u5ea6\u5e94\u8be5\u5927\u4e8e\u6216\u7b49\u4e8e\u7f16\u7801\u901f\u5ea6\uff08\u89c6\u4e22\u5931\u7684\u6570\u636e\u5757\u6570\u91cf\u800c\u5b9a\uff09\uff0c\u4e0b\u56fe\u4e3a10+4\u7b56\u7565\u4e0b\u4fee\u590d\u4e0d\u540c\u6570\u91cf\u7684\u539f\u59cb\u6570\u636e\u7684\u901f\u5ea6\u5bf9\u6bd4[2]\uff1a<\/p>\n
\u6ce8\uff1a<\/p>\n
\u6d4b\u8bd5\u5e73\u53f0\u4e0e\u4e0a\u6587\u7684\u7f16\u7801\u6d4b\u8bd5\u76f8\u540c<\/p>\n
lostdata=\u4e22\u5931\u6570\u636e\u5757\u6570\u76ee\uff08\u4e2a\uff09<\/p>\n
\u539f\u59cb\u6570\u636e\u5757\u6bcf\u5757\u5927\u5c0f\u4e3a128KB\uff0c\u603b\u5927\u5c0f\u4e3a1280KB<\/p>\n
$\"\"$ <\/p>\n
2.2\u53c2\u6570\u53ef\u914d\u7f6e<\/strong><\/span><\/div>\n
\u4e00\u6b3e\u5408\u7406\u7684\u7ea0\u5220\u7801\u5f15\u64ce\u5fc5\u987b\u80fd\u505a\u5230\u7f16\u7801\u7b56\u7565\u5728\u7406\u8bba\u8303\u56f4\u5185\u53ef\u968f\u610f\u5207\u6362\uff0c\u8fd9\u6307\u7684\u662f\u5982\u679c\u8981\u5c06\u7f16\u7801\u7b56\u7565\u8fdb\u884c\u53d8\u5316\u65f6\uff0c\u4ec5\u9700\u4ece\u63a5\u53e3\u4f20\u5165\u4e0d\u540c\u53c2\u6570\u800c\u4e0d\u9700\u8981\u6539\u52a8\u5f15\u64ce\u672c\u8eab\u3002\u8fd9\u5927\u5927\u964d\u4f4e\u4e86\u540e\u7eed\u7684\u5f00\u53d1\u548c\u7ef4\u62a4\u6240\u9700\u8981\u7684\u7cbe\u529b\u3002\u4e00\u4e2a\u53ef\u914d\u7f6e\u53c2\u6570\u7684\u7f16\u7801\u5f15\u64ce\u53ef\u4ee5\u6839\u636e\u6570\u636e\u7684\u51b7\u70ed\u7a0b\u5ea6\u548c\u6570\u636e\u91cd\u8981\u7a0b\u5ea6\u9009\u62e9\u4e0d\u540c\u7684\u7f16\u7801\u7cfb\u6570\uff0c\u6bd4\u5982\u53ef\u9760\u6027\u8981\u6c42\u9ad8\u7684\u6570\u636e\u53ef\u4ee5\u9009\u62e9\u66f4\u591a\u5197\u4f59\u3002<\/p>\n
2.3\u4ee3\u7801\u7b80\u6d01\u3001\u7a33\u5b9a\u5ea6<\/strong><\/span><\/div>\n
\u4e3a\u4e86\u5229\u7528SIMD\u52a0\u901f\u6211\u4eec\u4e0d\u5f97\u4e0d\u5f15\u5165\u6c47\u7f16\u4ee3\u7801\u6216\u8005\u5c01\u88c5\u540e\u7684CPU\u6307\u4ee4\uff0c\u56e0\u6b64\u4ee3\u7801\u5f62\u5f0f\u5e76\u4e0d\u5e38\u89c1\u3002\u4e3a\u4e86\u589e\u5f3a\u53ef\u8bfb\u6027\u53ef\u5c06\u90e8\u5206\u903b\u8f91\u62bd\u79bb\u5230\u9ad8\u7ea7\u8bed\u8a00\uff0c\u7136\u800c\u4f1a\u635f\u5931\u90e8\u5206\u6027\u80fd\uff0c\u8fd9\u5176\u4e2d\u7684\u5229\u5f0a\u9700\u8981\u6839\u636e\u56e2\u961f\u7684\u7814\u53d1\u5b9e\u529b\u8fdb\u884c\u6743\u8861\u3002<\/p>\n
\u63a5\u4e0b\u6765\u7684\u53ef\u7ef4\u62a4\u6027\u4e5f\u975e\u5e38\u91cd\u8981\u3002\u9996\u5148\u662f\u63a5\u53e3\u7a33\u5b9a\uff0c\u4e0d\u4f1a\u968f\u7740\u65b0\u6280\u672f\u7684\u5f15\u5165\u800c\u5bfc\u81f4\u4ee3\u7801\u5927\u89c4\u6a21\u91cd\u6784\uff1b\u53e6\u5916\u4ee3\u7801\u5fc5\u987b\u7ecf\u8fc7\u6709\u5408\u7406\u7684\u6d4b\u8bd5\u6a21\u5757\u4ee5\u4fbf\u5728\u540e\u7eed\u7684\u66f4\u65b0\u4e2d\u6821\u9a8c\u65b0\u7b97\u6cd5\u3002<\/p>\n
\u6bd4\u5982\u65e9\u5148\u7684SIMD\u52a0\u901f\u662f\u57fa\u4e8eSSE\u6307\u4ee4\u96c6\u6269\u5c55\u6765\u505a\u7684\uff0c\u968f\u540eIntel\u53c8\u63a8\u51faAVX\u6307\u4ee4\u96c6\u8fdb\u4e00\u6b65\u63d0\u9ad8\u4e86\u6027\u80fd\uff0c\u5f15\u64ce\u5e94\u8be5\u80fd\u5373\u65f6\u8ddf\u4e0a\u786c\u4ef6\u8fdb\u6b65\u7684\u6b65\u4f10\u3002\u518d\u6bd4\u65b9\u8bf4\uff0c\u518d\u751f\u7801[5]\uff08\u53ef\u4ee5\u7406\u89e3\u4e3a\u80fd\u51cf\u5c11\u4fee\u590d\u5f00\u9500\u7684\u7ea0\u5220\u7801\uff09\u662f\u5c06\u6765\u53d1\u5c55\u7684\u8d8b\u52bf\uff0c\u4f46\u6211\u4eec\u4e0d\u80fd\u56e0\u4e3a\u7b97\u6cd5\u7684\u5347\u7ea7\u800c\u968f\u610f\u6539\u53d8\u5f15\u64ce\u7684\u63a5\u53e3\u3002<\/p>\n
2.4\u964d\u4f4e\u4fee\u590d\u5f00\u9500<\/strong><\/span><\/div>\n
\u7ea0\u5220\u7801\u7684\u4e00\u5927\u52a3\u52bf\u4fbf\u662f\u4fee\u590d\u4ee3\u4ef7\u6570\u500d\u4e8e\u526f\u672c\u65b9\u6848\u3002k+m\u7b56\u7565\u7684RS\u7801\u5728\u4fee\u590d\u4efb\u4f55\u4e00\u4e2a\u6570\u636e\u5757\u65f6\uff0c\u90fd\u9700\u8981k\u4efd\u7684\u5176\u4ed6\u6570\u636e\u4ece\u78c1\u76d8\u4e0a\u8bfb\u53d6\u548c\u5728\u7f51\u7edc\u4e0a\u4f20\u8f93\u3002\u6bd4\u598210+4\u7684\u65b9\u6848\u4e0b\uff0c\u4e22\u5931\u4e00\u4e2a\u6570\u636e\u5757\u5c06\u5fc5\u987b\u8bfb\u53d610\u4e2a\u5757\u6765\u4fee\u590d\uff0c\u6574\u4e2a\u4fee\u590d\u8fc7\u7a0b\u5360\u7528\u4e86\u5927\u91cf\u78c1\u76d8I\/O\u548c\u7f51\u7edc\u6d41\u91cf\uff0c\u5e76\u4f7f\u5f97\u7cfb\u7edf\u66b4\u9732\u5728\u4e00\u79cd\u964d\u7ea7\u7684\u4e0d\u7a33\u5b9a\u72b6\u6001\u3002\u56e0\u6b64\uff0c\u5b9e\u9645\u7cfb\u7edf\u4e2d\u5e94\u8be5\u5c3d\u91cf\u907f\u514d\u4f7f\u7528\u8fc7\u5927\u7684k\u503c\u3002<\/p>\n
\u518d\u751f\u7801\u4fbf\u662f\u4e3a\u4e86\u7f13\u89e3\u6570\u636e\u4fee\u590d\u5f00\u9500\u800c\u88ab\u63d0\u51fa\u7684\uff0c\u5b83\u80fd\u591f\u6781\u5927\u51cf\u5c11\u8282\u70b9\u5931\u6548\u65f6\u6240\u9700\u8981\u7684\u541e\u5410\u7684\u6570\u636e\u91cf\u3002\u7136\u800c\u5176\u590d\u6742\u5ea6\u5927\uff0c\u4e00\u65b9\u9762\u964d\u4f4e\u4e86\u7f16\u7801\u901f\u5ea6\uff0c\u53e6\u5916\u4e00\u65b9\u9762\u727a\u7272\u4e86\u4f20\u7edfRS\u7801\u7684\u4e00\u4e9b\u4f18\u79c0\u6027\u8d28\uff0c\u5728\u5de5\u7a0b\u5b9e\u73b0\u4e0a\u7684\u96be\u5ea6\u4e5f\u5927\u4e8e\u4f20\u7edf\u7ea0\u5220\u7801\u3002<\/p>\n
\u4e09\u3001\u8457\u540d\u5f15\u64ce\u5bf9\u6bd4<\/strong><\/div>\n
\u76ee\u524d\u88ab\u5e94\u7528\u6700\u5e7f\u6cdb\u5e76\u91c7\u7528\u4e86SIMD\u52a0\u901f\u7684\u5f15\u64ce\u6709\u5982\u4e0b\u51e0\u6b3e\uff1a<\/p>\n
1.Intel\u51fa\u54c1\u7684ISA-L[4]<\/p>\n
2.J.S.Plank\u6559\u6388\u9886\u5bfc\u7684Jerasure[5]<\/p>\n
3.klauspost\u7684\u4e2a\u4eba\u9879\u76ee\uff08inGolang)[6]<\/p>\n
\u8fd9\u4e09\u6b3e\u5f15\u64ce\u7684\u6267\u884c\u6548\u7387\u90fd\u975e\u5e38\u9ad8\uff0c\u5728\u5b9e\u73b0\u4e0a\u7565\u6709\u51fa\u5165\uff0c\u4ee5\u4e0b\u662f\u5177\u4f53\u5206\u6790\uff1a<\/p>\n
3.1 ISA-L<\/strong><\/span><\/div>\n
\u7ea0\u5220\u7801\u4f5c\u4e3aISA-L\u5e93\u6240\u63d0\u4f9b\u7684\u529f\u80fd\u4e4b\u4e00\uff0c\u5176\u6027\u80fd\u5e94\u8be5\u662f\u76ee\u524d\u4e1a\u754c\u6700\u4f73\u3002\u9700\u8981\u6ce8\u610f\u7684\u662fIntel\u91c7\u7528\u7684\u6027\u80fd\u6d4b\u8bd5\u65b9\u6cd5\u4e0e\u5b66\u672f\u754c\u5e38\u7528\u7684\u65b9\u5f0f\u7565\u6709\u51fa\u8def\uff0c\u5176\u5c06\u6570\u636e\u5757\u4e0e\u5197\u4f59\u5757\u7684\u5c3a\u5bf8\u4e4b\u548c\u9664\u4ee5\u8017\u65f6\u4f5c\u4e3a\u901f\u5ea6\uff0c\u800c\u4e00\u822c\u7684\u65b9\u6cd5\u662f\u4e0d\u5305\u542b\u5197\u4f59\u5757\u7684\u3002\u53e6\u5916\uff0cISA-L\u672a\u5bf9vandermonde\u77e9\u9635\u505a\u7279\u6b8a\u5904\u7406\uff0c\u800c\u662f\u76f4\u63a5\u62fc\u63a5\u5355\u4f4d\u77e9\u9635\u4f5c\u4e3a\u5176\u7f16\u7801\u77e9\u9635\uff0c\u56e0\u6b64\u5728\u67d0\u4e9b\u53c2\u6570\u4e0b\u4f1a\u51fa\u73b0\u7f16\u7801\u77e9\u9635\u7ebf\u6027\u76f8\u5173\u7684\u95ee\u9898\u3002\u597d\u5728ISA-L\u63d0\u4f9b\u4e86cauchy\u77e9\u9635\u4f5c\u4e3a\u7b2c\u4e8c\u65b9\u6848\u3002<\/p>\n
ISA-L\u4e4b\u6240\u4ee5\u901f\u5ea6\u5feb\uff0c\u4e00\u65b9\u9762\u662f\u7531\u4e8eIntel\u8c19\u719f\u6c47\u7f16\u4f18\u5316\u4e4b\u9053\uff0c\u5176\u6b21\u662f\u56e0\u4e3a\u5b83\u5c06\u6574\u4f53\u77e9\u9635\u8fd0\u7b97\u642c\u8fc1\u5230\u6c47\u7f16\u4e2d\u8fdb\u884c\u3002\u4f46\u8fd9\u5bfc\u81f4\u4e86\u6c47\u7f16\u4ee3\u7801\u7684\u6025\u5267\u81a8\u80c0\uff0c\u4ee4\u4eba\u671b\u800c\u751f\u754f\u3002<\/p>\n
\u53e6\u5916ISA-L\u652f\u6301\u7684\u6307\u4ee4\u96c6\u6269\u5c55\u4e30\u5bcc\uff0c\u4e0b\u81f3SSSE3\uff0c\u4e0a\u5230AVX512\uff0c\u5e73\u53f0\u9002\u5e94\u6027\u6700\u5f3a\u3002<\/p>\n
3.2 Jerasure2.0<\/strong><\/span><\/div>\n
\u4e0d\u540c\u4e8eISA-L\u76f4\u63a5\u4f7f\u7528\u6c47\u7f16\u4ee3\u7801\uff0cJerasure2.0\u4f7f\u7528C\u8bed\u8a00\u5c01\u88c5\u540e\u7684\u6307\u4ee4\uff0c\u8fd9\u6837\u4ee3\u7801\u66f4\u52a0\u7684\u53cb\u597d\u3002\u53e6\u5916Jerasure2.0\u4e0d\u4ec5\u4ec5\u652f\u6301GF(2^8)\u6709\u9650\u57df\u7684\u8ba1\u7b97\uff0c\u5176\u8fd8\u53ef\u4ee5\u8fdb\u884cGF(2^4)-GF(2^128)\u4e4b\u95f4\u7684\u6709\u9650\u57df\u3002\u5e76\u4e14\u9664\u4e86RS\u7801\uff0c\u8fd8\u63d0\u4f9b\u4e86CauchyReed-Solomoncode\uff08CRS\u7801\uff09\u7b49\u5176\u4ed6\u7f16\u7801\u65b9\u6cd5\u7684\u652f\u6301\u3002\u5b83\u5728\u5de5\u4e1a\u5e94\u7528\u4e4b\u5916\uff0c\u5176\u5b66\u672f\u4ef7\u503c\u4e5f\u975e\u5e38\u9ad8\u3002\u76ee\u524d\u5176\u662f\u4f7f\u7528\u6700\u4e3a\u5e7f\u6cdb\u7684\u7f16\u7801\u5e93\u4e4b\u4e00\u3002\u76ee\u524dJerasure2.0\u5e76\u4e0d\u652f\u6301AVX\u52a0\u901f\uff0c\u5c3d\u7ba1\u5982\u6b64\uff0c\u5728\u4ec5\u4f7f\u7528SSE\u7684\u60c5\u51b5\u4e0b\uff0cJerasure2.0\u4f9d\u7136\u63d0\u4f9b\u4e86\u975e\u5e38\u9ad8\u7684\u6027\u80fd\u8868\u73b0\u3002\u4e0d\u8fc7\u5176\u4e3b\u8981\u4f5c\u8005\u4e4b\u4e00JamesS.Plank\u6559\u6388\u8f6c\u4e86\u7814\u7a76\u65b9\u5411\uff0c\u53e6\u5916\u4e00\u4f4d\u4f5c\u8005Greenan\u535a\u58eb\u65e9\u5df2\u52a0\u5165\u5de5\u4e1a\u754c\u3002\u56e0\u6b64\u540e\u7eed\u7684\u7ef4\u62a4\u5c06\u662f\u4e2a\u6bd4\u8f83\u5927\u7684\u95ee\u9898\u3002<\/p>\n
3.3 klauspost\u7684ReedSolomon<\/strong><\/span><\/div>\n
klauspost\u5229\u7528Golang\u7684\u6c47\u7f16\u652f\u6301\uff0c\u53cb\u597d\u5730\u4f7f\u7528\u4e86SIMD\u6280\u672f\uff0c\u6b64\u6b3e\u5f15\u64ce\u7684SIMD\u52a0\u901f\u90e8\u5206\u662f\u76ee\u524d\u6211\u770b\u5230\u7684\u5b9e\u73b0\u4e2d\u6700\u4e3a\u7b80\u6d01\u7684\uff0c\u77e9\u9635\u8fd0\u7b97\u7684\u90e8\u5206\u903b\u8f91\u88ab\u79fb\u5230\u4e86\u5916\u5c42\u9ad8\u7ea7\u8bed\u8a00\u4e2d\uff0c\u52a0\u4e0aGolang\u81ea\u5e26\u7684\u6c47\u7f16\u652f\u6301\uff0c\u4f7f\u5f97\u6c47\u7f16\u4ee3\u7801\u9605\u8bfb\u8d77\u6765\u66f4\u4f73\u7684\u53cb\u597d\u3002\u4e0d\u8fc7Go\u5e76\u6ca1\u6709\u96c6\u6210\u6240\u6709\u6307\u4ee4\uff0c\u90e8\u5206\u6307\u4ee4\u4e0d\u5f97\u4e0d\u5229\u7528YASM\u7b49\u6c47\u7f16\u7f16\u8bd1\u5668\u5c06\u6307\u4ee4\u7f16\u8bd1\u6210\u5b57\u8282\u5e8f\u5217\u5199\u5165\u6c47\u7f16\u6587\u4ef6\u4e2d\u3002\u4e00\u65b9\u9762\u5bfc\u81f4\u4e86\u6307\u4ee4\u7684\u5b8c\u5168\u4e0d\u53ef\u8bfb\uff0c\u53e6\u5916\u4e00\u65b9\u9762\u8fd9\u90e8\u5206\u4ee3\u7801\u7684\u8bed\u6cd5\u98ce\u683c\u662fIntel\u800c\u975eGolang\u6c47\u7f16\u7684AT&T\u98ce\u683c\uff0c\u5e73\u6dfb\u4e86\u8ff7\u60d1\u3002\u8fd9\u6b3e\u5f15\u64ce\u6bd4\u8f83\u660e\u663e\u7684\u7f3a\u9677\u6709\u4e24\u70b9\uff1a1.\u5bf9\u4e8e\u8f83\u5927\u7684\u6570\u636e\u5757\uff0c\u7f16\u7801\u901f\u5ea6\u4f1a\u6709\u5de8\u5927\u7684\u4e0b\u6ed1\uff1b2.\u4fee\u590d\u901f\u5ea6\u660e\u663e\u6162\u4e8e\u7f16\u7801\u901f\u5ea6\u3002<\/p>\n
3.4\u7f16\u7801\u901f\u5ea6\u5bf9\u6bd4<\/strong><\/span><\/div>\n
\u6211\u5728\u8fd9\u91cc\u9009\u53d6\u4e86IntelISA-L\uff08\u56fe\u4e2dintel),klauspost\u7684ReedSolomon(\u56fe\u4e2dk),\u4ee5\u53ca\u81ea\u7814\u7684\u4e00\u6b3e\u5f15\u64ce[2](\u56fe\u4e2dxxx)\u8fd9\u4e09\u6b3e\u5f15\u64ce\u8fdb\u884c\u7f16\u7801\u6548\u7387\u7684\u5bf9\u6bd4,\u8fd9\u4e09\u6b3e\u5f15\u64ce\u5747\u652f\u6301avx2\u52a0\u901f\u3002\u6d4b\u8bd5\u7ed3\u679c\u5982\u4e0b\uff1a<\/p>\n
$\"\"$ <\/p>\n
\u6ce8\uff1a<\/p>\n
\u7f16\u7801\u901f\u5ea6\u8ba1\u7b97\u516c\u5f0f\uff0c\u6d4b\u8bd5\u65b9\u6cd5\u4e0e\u4e0a\u4e00\u8282\u76f8\u540c\u3002\u5176\u4e2disa-l\u9ed8\u8ba4\u7684\u901f\u5ea6\u8ba1\u7b97\u65b9\u5f0f\u4e0e\u516c\u5f0f\u6709\u51b2\u7a81\uff0c\u9700\u8981\u4fee\u6539\u4e3a\u4e00\u81f4<\/p>\n
\u6d4b\u8bd5\u5e73\u53f0\uff1aAWSt2.microIntel(R)Xeon(R)CPUE5-2676v3@2.40GHz,Memory1GB<\/p>\n
\u7f16\u7801\u65b9\u6848\uff1a10+4<\/p>\n
klauspost\u7684\u5f15\u64ce\u9ed8\u8ba4\u5f00\u4e86\u5e76\u53d1\uff0c\u6d4b\u8bd5\u4e2d\u9700\u8981\u5c06\u5e76\u53d1\u6570\u8bbe\u7f6e\u4e3a1<\/p>\n
\u56db\u3001\u81ea\u5df1\u5b9e\u73b0\u4e00\u6b3e\u5f15\u64ce<\/strong><\/div>\n
\u53ef\u80fd\u662f\u7531\u4e8e\u5bf9\u5f00\u6e90\u5e93\u540e\u7eed\u7ef4\u62a4\u95ee\u9898\u7684\u62c5\u5fe7\uff0c\u4e5f\u6709\u53ef\u80fd\u662f\u73b0\u6709\u65b9\u6848\u5e76\u4e0d\u80fd\u6ee1\u8db3\u4f01\u4e1a\u5bf9\u67d0\u4e9b\u7279\u5b9a\u9700\u6c42\u548c\u504f\u597d\uff0c\u5f88\u591a\u516c\u53f8\u9009\u62e9\u4e86\u81ea\u7814\u5f15\u64ce\u3002\u90a3\u4e48\u5982\u4f55\u5199\u51fa\u9ad8\u6548\u7684\u4ee3\u7801\u5462\uff1f\u5728\u4e0a\u9762\u7684\u7b80\u5355\u4ecb\u7ecd\u4e2d\uff0c\u53d7\u9650\u4e8e\u7bc7\u5e45\u6211\u8df3\u8fc7\u4e86\u5f88\u591a\u7ec6\u8282\u3002\u6bd4\u5982SIMD\u6280\u672f\u662f\u5982\u4f55\u4e3a\u7ea0\u5220\u7801\u670d\u52a1\u7684\uff0c\u4ee5\u53ca\u5982\u4f55\u5229\u7528CPUCache\u505a\u4f18\u5316\u7b49\u8bf8\u591a\u91cd\u8981\u95ee\u9898\u3002\u6211\u4eec\u4f1a\u5728\u540e\u7eed\u7684\u6587\u7ae0\u4e2d\u9010\u6b65\u5c55\u5f00\u5176\u5b9e\u73b0\uff0c\u6b22\u8fce\u5927\u5bb6\u7ee7\u7eed\u5173\u6ce8\u3002<\/p>\n
\n
\u539f\u6587\u6765\u81ea\uff1ahttp:\/\/www.yunweipai.com\/archives\/18439.html<\/a><\/p>\n
\u672c\u6587\u5730\u5740\uff1a https:\/\/gulass.cn\/erasure-code.html<\/a>\u7f16\u8f91\u5458\uff1a\u90ed\u5efa\u9e4f\uff0c\u5ba1\u6838\u5458\uff1a\u9004\u589e\u5b9d<\/span><\/p>\n<\/blockquote>\n","protected":false},"excerpt":{"rendered":"
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