{"id":209174,"date":"2025-09-30T05:59:11","date_gmt":"2025-09-29T21:59:11","guid":{"rendered":"https:\/\/www.server.hk\/blog\/209174\/"},"modified":"2025-09-30T05:59:12","modified_gmt":"2025-09-29T21:59:12","slug":"vps-scikit-learn-3","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/209174\/","title":{"rendered":"\u9999\u6e2fVPS\u4e00\u7ad9\u5f0f\u642d\u5efaScikit-learn\u673a\u5668\u5b66\u4e60\u5e73\u53f0\uff1a\u90e8\u7f72\u4e0e\u6027\u80fd\u4f18\u5316\u5168\u6d41\u7a0b\u6307\u5357"},"content":{"rendered":"<p>\u5f15\u8a00\uff1a\u5728\u8fb9\u7f18\u8ba1\u7b97\u4e0e\u4f4e\u5ef6\u8fdf\u5e94\u7528\u9700\u6c42\u65e5\u76ca\u589e\u957f\u7684\u4eca\u5929\uff0c\u8bb8\u591a\u7ad9\u957f\u4e0e\u4f01\u4e1a\u5e0c\u671b\u5728\u8f7b\u91cf\u5316\u7684\u4e91\u4e3b\u673a\u4e0a\u5feb\u901f\u90e8\u7f72\u673a\u5668\u5b66\u4e60\u670d\u52a1\u3002Scikit-learn \u4ee5\u5176\u6613\u7528\u4e0e\u7a33\u5b9a\u6027\u6210\u4e3a\u5e38\u89c1\u9009\u62e9\u3002\u672c\u6587\u9762\u5411\u5f00\u53d1\u8005\u548c\u8fd0\u7ef4\u5de5\u7a0b\u5e08\uff0c\u7ed3\u5408\u9999\u6e2fVPS \u7684\u7f51\u7edc\u4e0e\u5730\u7406\u4f18\u52bf\uff0c\u8be6\u8ff0\u4ece\u73af\u5883\u642d\u5efa\u3001\u4f9d\u8d56\u4f18\u5316\u5230\u6027\u80fd\u8c03\u4f18\u7684\u5168\u6d41\u7a0b\u5b9e\u6218\u6280\u5de7\uff0c\u540c\u65f6\u5bf9\u6bd4\u7f8e\u56fdVPS\u3001\u9999\u6e2f\u670d\u52a1\u5668\u4e0e\u7f8e\u56fd\u670d\u52a1\u5668\u7684\u9009\u8d2d\u8003\u91cf\uff0c\u5e2e\u52a9\u4f60\u5728\u6709\u9650\u8d44\u6e90\u4e0a\u83b7\u5f97\u5c3d\u53ef\u80fd\u597d\u7684\u6a21\u578b\u63a8\u7406\u4e0e\u8bad\u7ec3\u4f53\u9a8c\u3002<\/p>\n<h2>\u4e00\u3001Scikit-learn \u5de5\u4f5c\u539f\u7406\u4e0e\u9002\u7528\u573a\u666f\u7b80\u8ff0<\/h2>\n<p>Scikit-learn \u662f\u57fa\u4e8e NumPy\/SciPy \u7684\u7ecf\u5178\u673a\u5668\u5b66\u4e60\u5e93\uff0c\u63d0\u4f9b\u5927\u91cf\u4f20\u7edf\u7b97\u6cd5\uff08\u7ebf\u6027\u6a21\u578b\u3001\u6811\u6a21\u578b\u3001\u805a\u7c7b\u3001\u964d\u7ef4\u7b49\uff09\u3002\u5176\u8bbe\u8ba1\u504f\u5411\u4e8e CPU \u591a\u6838\u5e76\u884c\uff08\u901a\u8fc7 joblib\uff09\u548c\u5185\u5b58\u4e2d\u64cd\u4f5c\uff0c\u9002\u5408\uff1a<\/p>\n<ul>\n<li>\u4e2d\u5c0f\u89c4\u6a21\u7684\u7279\u5f81\u5de5\u7a0b\u4e0e\u6a21\u578b\u8bad\u7ec3\uff08\u6570\u4e07\u5230\u6570\u767e\u4e07\u6837\u672c\uff0c\u89c6\u5185\u5b58\u4e0e\u7279\u5f81\u7ef4\u5ea6\u800c\u5b9a\uff09\u3002<\/li>\n<li>\u5728\u7ebf\/\u79bb\u7ebf\u6279\u91cf\u63a8\u7406\uff0c\u4f8b\u5982\u63a8\u8350\u3001\u5206\u7c7b\u3001\u5f02\u5e38\u68c0\u6d4b\u7b49\u4f4e\u5ef6\u8fdf\u670d\u52a1\u3002<\/li>\n<li>\u4f5c\u4e3a\u539f\u578b\u9a8c\u8bc1\u4e0e\u751f\u4ea7\u5316\u524d\u7684\u57fa\u7ebf\u6a21\u578b\u3002<\/li>\n<\/ul>\n<p>\u4e0e\u6df1\u5ea6\u5b66\u4e60\u4e0d\u540c\uff0cScikit-learn \u901a\u5e38\u4e0d\u4f9d\u8d56 GPU\uff0c\u4f46\u5bf9 CPU \u7684\u5411\u91cf\u5316\u4e0e BLAS \u5b9e\u73b0\u9ad8\u5ea6\u654f\u611f\u3002\u56e0\u6b64\u5728 VPS \u9009\u578b\u4e0e\u7cfb\u7edf\u914d\u7f6e\u4e0a\u8981\u4fa7\u91cd CPU \u6027\u80fd\u4e0e\u5185\u5b58\u5e26\u5bbd\u3002<\/p>\n<h2>\u4e8c\u3001\u9999\u6e2fVPS \u73af\u5883\u51c6\u5907\u4e0e\u57fa\u7840\u4f9d\u8d56\u5b89\u88c5<\/h2>\n<h3>1. VPS \u89c4\u683c\u5efa\u8bae<\/h3>\n<ul>\n<li>CPU\uff1a\u5c3d\u91cf\u9009\u62e9\u9ad8\u4e3b\u9891\u4e0e AVX \u652f\u6301\u7684\u591a\u6838\u5b9e\u4f8b\uff08\u4f8b\u5982 4 \u6838\u4ee5\u4e0a\u7528\u4e8e\u5e76\u884c\u8bad\u7ec3\uff09\u3002<\/li>\n<li>\u5185\u5b58\uff1a8GB \u8d77\u6b65\uff0c\u590d\u6742\u7279\u5f81\u5de5\u7a0b\u5efa\u8bae 16GB \u6216\u66f4\u591a\uff0c\u907f\u514d\u9891\u7e41 swap\u3002<\/li>\n<li>\u5b58\u50a8\uff1aSSD NVMe \u4f18\u5148\uff0c\u7528\u4e8e\u52a0\u901f I\/O \u548c\u4e34\u65f6\u6570\u636e\u8bfb\u5199\u3002<\/li>\n<li>\u7f51\u7edc\uff1a\u5982\u679c\u9700\u9891\u7e41\u8bbf\u95ee\u5916\u90e8\u6570\u636e\u6e90\u6216\u63d0\u4f9b\u4f4e\u5ef6\u8fdf API\uff0c\u9999\u6e2fVPS \u5728\u4e9a\u592a\u5730\u533a\u5ef6\u8fdf\u66f4\u4f18\uff1b\u5bf9\u6bd4\u7f8e\u56fdVPS\uff0c\u9999\u6e2f\u670d\u52a1\u5668\u5728\u4e9a\u6d32\u7528\u6237\u9762\u524d\u5ef6\u8fdf\u66f4\u4f4e\uff0c\u800c\u7f8e\u56fd\u670d\u52a1\u5668\u66f4\u9002\u5408\u5317\u7f8e\u7528\u6237\u7fa4\u3002<\/li>\n<\/ul>\n<h3>2. \u64cd\u4f5c\u7cfb\u7edf\u4e0e\u57fa\u7840\u5305<\/h3>\n<p>\u63a8\u8350\u4f7f\u7528 Ubuntu LTS\uff08\u4f8b\u5982 20.04\/22.04\uff09\u6216 Debian \u7a33\u5b9a\u7248\u3002\u5b89\u88c5\u57fa\u672c\u5de5\u5177\uff1a<\/p>\n<ul>\n<li>\u66f4\u65b0\u7cfb\u7edf\uff1a<code>sudo apt update &amp;&amp; sudo apt upgrade -y<\/code><\/li>\n<li>\u5b89\u88c5 Python \u5de5\u5177\u94fe\uff1a<code>sudo apt install -y python3 python3-venv python3-pip build-essential git<\/code><\/li>\n<li>\u5b89\u88c5\u5e38\u7528\u5e93\u7f16\u8bd1\u4f9d\u8d56\uff1a<code>sudo apt install -y libatlas-base-dev libopenblas-dev liblapack-dev gfortran<\/code><\/li>\n<\/ul>\n<p>\u8bf4\u660e\uff1a\u5b89\u88c5 BLAS\/LAPACK \u76f8\u5173\u5f00\u53d1\u5305\u53ef\u4ee5\u8ba9 NumPy\/Scipy \u4e0e\u672c\u5730\u9ad8\u6548\u6570\u5b66\u5e93\u94fe\u63a5\uff0c\u663e\u8457\u63d0\u5347\u7ebf\u6027\u4ee3\u6570\u8fd0\u7b97\u6027\u80fd\u3002<\/p>\n<h3>3. \u865a\u62df\u73af\u5883\u4e0e\u5305\u7ba1\u7406<\/h3>\n<ul>\n<li>\u521b\u5efa\u865a\u62df\u73af\u5883\uff1a<code>python3 -m venv \/opt\/mlenv<\/code>\uff0c\u6fc0\u6d3b\u540e\u4f7f\u7528 pip \u5b8c\u6210\u5305\u5b89\u88c5\u3002<\/li>\n<li>\u5efa\u8bae\u4f7f\u7528 pip + wheel\uff0c\u6216\u5728\u9700\u8981\u66f4\u597d\u6570\u503c\u5e93\uff08\u5982 Intel MKL\uff09\u65f6\u4f7f\u7528 conda\u3002<\/li>\n<li>\u5b89\u88c5 Scikit-learn\uff1a<code>pip install -U pip setuptools wheel<\/code>\uff0c\u7136\u540e <code>pip install numpy scipy scikit-learn joblib<\/code>\u3002<\/li>\n<\/ul>\n<p>\u6ce8\u610f\uff1a\u5728 VPS \u4e0a\u76f4\u63a5\u901a\u8fc7 pip \u5b89\u88c5\u7684 NumPy\/Scipy \u53ef\u80fd\u94fe\u63a5\u5230 OpenBLAS\u3002\u82e5\u8ffd\u6c42\u66f4\u9ad8\u6027\u80fd\uff0c\u53ef\u5728 x86 \u5b9e\u4f8b\u4e0a\u8003\u8651\u4f7f\u7528 Intel MKL\uff08\u901a\u8fc7 conda \u5b89\u88c5 <code>numpy==mkl<\/code> \u5206\u53d1\uff09\uff0c\u4f46 conda \u4f1a\u5360\u7528\u66f4\u591a\u78c1\u76d8\u4e0e\u5185\u5b58\u3002<\/p>\n<h2>\u4e09\u3001\u6027\u80fd\u4f18\u5316\u5b9e\u6218\uff1a\u4ece\u7cfb\u7edf\u5230\u7b97\u6cd5\u7684\u5168\u94fe\u8def\u8c03\u4f18<\/h2>\n<h3>1. \u4f18\u5316\u7ebf\u6027\u4ee3\u6570\u5e93\uff08BLAS\uff09<\/h3>\n<ul>\n<li>\u786e\u8ba4\u5f53\u524d\u7684 BLAS \u5b9e\u73b0\uff1a\u5728 Python \u4e2d\u8fd0\u884c <code>import numpy as np; np.__config__.show()<\/code> \u67e5\u770b\u94fe\u63a5\u4fe1\u606f\u3002<\/li>\n<li>\u82e5\u662f OpenBLAS\uff0c\u53ef\u901a\u8fc7\u73af\u5883\u53d8\u91cf\u63a7\u5236\u7ebf\u7a0b\u6570\uff1a<code>export OPENBLAS_NUM_THREADS=4<\/code>\u3002\u907f\u514d OpenBLAS \u4e0e joblib \u5e76\u884c\u51b2\u7a81\u5bfc\u81f4\u8fc7\u5ea6\u7ebf\u7a0b\u5316\u3002<\/li>\n<li>\u5728\u6027\u80fd\u5173\u952e\u573a\u666f\uff0c\u8003\u8651\u4f7f\u7528 MKL \u6216\u8005\u9488\u5bf9\u4e91\u5e73\u53f0\u7f16\u8bd1\u7684 OpenBLAS\uff0c\u53ef\u83b7\u5f97\u66f4\u597d\u7f13\u5b58\u5229\u7528\u7387\u3002<\/li>\n<\/ul>\n<h3>2. \u5e76\u884c\u7b56\u7565\uff1ajoblib \u4e0e n_jobs \u8bbe\u7f6e<\/h3>\n<ul>\n<li>Scikit-learn \u7684\u5e76\u884c\u901a\u5e38\u901a\u8fc7 n_jobs \u53c2\u6570\u63a7\u5236\uff08\u4f8b\u5982 RandomForest\u3001GridSearchCV\uff09\u3002\u5728 VPS \u4e0a\u5e94\u907f\u514d\u5c06 n_jobs \u8bbe\u7f6e\u4e3a CPU \u6838\u6570\u7684\u591a\u500d\u3002<\/li>\n<li>\u7ed3\u5408 BLAS \u7ebf\u7a0b\u6570\uff1a\u5982\u679c BLAS \u4f7f\u7528\u591a\u7ebf\u7a0b\uff0c\u5e94\u5c06 joblib \u7684\u5e76\u884c\u5ea6\u8bbe\u4e3a 1 \u6216\u9002\u5ea6\u51cf\u5c11\u3002\u539f\u5219\uff1a\u6838\u6570 N\uff0c\u82e5 BLAS \u5355\u7ebf\u7a0b\u5219\u53ef\u5c06 n_jobs=N\/2 \u6216 N-1\uff1b\u82e5 BLAS \u5df2\u591a\u7ebf\u7a0b\uff0c\u5219 n_jobs=1\u3002<\/li>\n<li>\u4f7f\u7528 joblib \u7684 Loky \u540e\u7aef\u53ef\u4ee5\u5728\u8fdb\u7a0b\u95f4\u9694\u79bb\u5185\u5b58\u5cf0\u503c\uff0c\u4f46\u4f1a\u589e\u52a0\u5e8f\u5217\u5316\u5f00\u9500\u3002<\/li>\n<\/ul>\n<h3>3. \u5185\u5b58\u4e0e I\/O \u4f18\u5316<\/h3>\n<ul>\n<li>\u907f\u514d\u5728\u5185\u5b58\u4e0d\u8db3\u7684 VPS \u4e0a\u4e00\u6b21\u6027\u52a0\u8f7d\u5168\u90e8\u6570\u636e\u3002\u91c7\u7528\u5206\u6279\uff08chunking\uff09\u6216\u589e\u91cf\u5b66\u4e60\uff08partial_fit\uff09\u63a5\u53e3\uff0c\u4f8b\u5982 SGDClassifier\u3001MiniBatchKMeans\u3002<\/li>\n<li>\u5bf9\u5927\u6570\u636e\u96c6\u4f7f\u7528\u5185\u5b58\u6620\u5c04\uff08numpy.memmap\uff09\u6765\u51cf\u5c11\u5185\u5b58\u5360\u7528\uff0c\u4f46\u9700\u6ce8\u610f\u78c1\u76d8 I\/O \u5c06\u6210\u4e3a\u74f6\u9888\uff0cSSD \u80fd\u663e\u8457\u6539\u5584\u8868\u73b0\u3002<\/li>\n<li>\u5173\u95ed\u6216\u8c03\u6574 swap \u4ee5\u907f\u514d\u56e0\u9891\u7e41\u6362\u9875\u5bfc\u81f4\u6027\u80fd\u6296\u52a8\uff0c\u786e\u4fdd\u6709\u8db3\u591f\u7684 RAM\u3002<\/li>\n<\/ul>\n<h3>4. \u6a21\u578b\u538b\u7f29\u4e0e\u63a8\u7406\u52a0\u901f<\/h3>\n<ul>\n<li>\u4f7f\u7528\u6a21\u578b\u7a00\u758f\u5316\uff08\u5982 L1 \u6b63\u5219\u5316\u7684\u7ebf\u6027\u6a21\u578b\uff09\u6216\u526a\u679d\u51b3\u7b56\u6811\uff0c\u53ef\u4ee5\u51cf\u5c11\u6a21\u578b\u4f53\u79ef\u4e0e\u63a8\u7406\u65f6\u95f4\u3002<\/li>\n<li>\u5bfc\u51fa\u4e3a\u8f7b\u91cf\u683c\u5f0f\uff08joblib.dump\uff09\u65f6\u542f\u7528\u538b\u7f29\uff08compress=3 \u6216\u66f4\u9ad8\uff09\uff0c\u5728\u7f51\u7edc\u4f20\u8f93\u548c\u78c1\u76d8\u5b58\u50a8\u573a\u666f\u66f4\u53cb\u597d\u3002<\/li>\n<li>\u5c06\u63a8\u7406\u670d\u52a1\u8bbe\u8ba1\u4e3a\u957f\u8fde\u63a5\u7684\u8fdb\u7a0b\uff08Flask\/Gunicorn\/uvicorn\uff09\u5e76\u9884\u70ed\u6a21\u578b\uff0c\u907f\u514d\u6bcf\u6b21\u8bf7\u6c42\u52a0\u8f7d\u6a21\u578b\u5bfc\u81f4\u9ad8\u5ef6\u8fdf\u3002<\/li>\n<\/ul>\n<h3>5. \u57fa\u51c6\u6d4b\u8bd5\u4e0e\u76d1\u63a7<\/h3>\n<ul>\n<li>\u4f7f\u7528 micro-benchmark\uff08\u4f8b\u5982\u5bf9 predict \u7684\u65f6\u95f4\u6d4b\u91cf\uff09\u4e0e\u7cfb\u7edf\u5de5\u5177\uff08top\u3001htop\u3001iostat\uff09\u7ed3\u5408\u5206\u6790\u74f6\u9888\u3002<\/li>\n<li>\u5728\u90e8\u7f72 API \u524d\u8fdb\u884c\u538b\u529b\u6d4b\u8bd5\uff08ab\u3001wrk\uff09\u4ee5\u8bc4\u4f30\u5e76\u53d1\u6027\u80fd\uff0c\u5c24\u5176\u6ce8\u610f\u5728\u9999\u6e2fVPS \u4e0a\u7684\u5e26\u5bbd\u4e0e\u5e76\u53d1\u9650\u5236\u3002<\/li>\n<li>\u6536\u96c6\u5185\u5b58\u3001CPU\u3001\u54cd\u5e94\u65f6\u95f4\u6307\u6807\u5e76\u8bbe\u5b9a\u544a\u8b66\uff0c\u53ca\u65f6\u6269\u5bb9\u6216\u8c03\u6574\u5e76\u884c\u5ea6\u53c2\u6570\u3002<\/li>\n<\/ul>\n<h2>\u56db\u3001\u4e0d\u540c\u5730\u533a\u670d\u52a1\u5668\u7684\u9009\u8d2d\u5bf9\u6bd4\u4e0e\u5efa\u8bae<\/h2>\n<h3>1. \u9999\u6e2fVPS \u7684\u4f18\u52bf<\/h3>\n<ul>\n<li>\u5730\u7406\u4f4d\u7f6e\u9760\u8fd1\u4e9a\u592a\u7528\u6237\uff0c<strong>\u7f51\u7edc\u5ef6\u8fdf\u4f4e<\/strong>\uff0c\u9002\u5408\u9762\u5411\u4e2d\u56fd\u9999\u6e2f\u3001\u4e1c\u5357\u4e9a\u4e0e\u4e2d\u56fd\u5357\u90e8\u7684\u5e94\u7528\u3002<\/li>\n<li>\u901a\u5e38\u5177\u6709\u8f83\u7a33\u5b9a\u7684\u51fa\u53e3\u5e26\u5bbd\u4e0e\u5408\u89c4\u4f18\u52bf\uff0c\u4fbf\u4e8e\u6ee1\u8db3\u672c\u5730\u6570\u636e\u5904\u7406\u4e0e\u6cd5\u89c4\u9700\u6c42\u3002<\/li>\n<\/ul>\n<h3>2. \u7f8e\u56fdVPS \/ \u7f8e\u56fd\u670d\u52a1\u5668 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