{"id":14228,"date":"2024-08-15T18:25:37","date_gmt":"2024-08-15T10:25:37","guid":{"rendered":"https:\/\/17aitech.com\/?p=14228"},"modified":"2024-10-08T15:10:09","modified_gmt":"2024-10-08T07:10:09","slug":"%e3%80%90%e8%af%be%e7%a8%8b%e6%80%bb%e7%bb%93%e3%80%91day24%ef%bc%88%e4%b8%8b%ef%bc%89%ef%bc%9a%e5%a4%a7%e6%a8%a1%e5%9e%8b%e9%83%a8%e7%bd%b2%e8%b0%83%e7%94%a8vllmlangchain","status":"publish","type":"post","link":"https:\/\/17aitech.com\/?p=14228","title":{"rendered":"\u3010\u8bfe\u7a0b\u603b\u7ed3\u3011day24\uff08\u4e0b\uff09\uff1a\u5927\u6a21\u578b\u90e8\u7f72\u8c03\u7528(vLLM+LangChain)"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_78 ez-toc-wrap-left-text counter-hierarchy ez-toc-counter ez-toc-light-blue ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">\u6587\u7ae0\u76ee\u5f55<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/17aitech.com\/?p=14228\/#%E5%89%8D%E8%A8%80\" >\u524d\u8a00<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/17aitech.com\/?p=14228\/#%E5%A4%A7%E6%A8%A1%E5%9E%8B%E5%BA%94%E7%94%A8%E6%A1%86%E6%9E%B6\" >\u5927\u6a21\u578b\u5e94\u7528\u6846\u67b6<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/17aitech.com\/?p=14228\/#vLLM\" >vLLM<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/17aitech.com\/?p=14228\/#LangChain\" >LangChain<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/17aitech.com\/?p=14228\/#%E9%83%A8%E7%BD%B2%E6%96%B9%E6%B3%95\" >\u90e8\u7f72\u65b9\u6cd5<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/17aitech.com\/?p=14228\/#%E5%87%86%E5%A4%87%E6%A8%A1%E5%9E%8B\" >\u51c6\u5907\u6a21\u578b<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/17aitech.com\/?p=14228\/#%E5%AE%89%E8%A3%85vLLM\" >\u5b89\u88c5vLLM<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/17aitech.com\/?p=14228\/#%E9%83%A8%E7%BD%B2vLLM\" >\u90e8\u7f72vLLM<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/17aitech.com\/?p=14228\/#%E5%AE%89%E8%A3%85LangChain\" >\u5b89\u88c5LangChain<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/17aitech.com\/?p=14228\/#%E4%BD%BF%E7%94%A8LangChain\" >\u4f7f\u7528LangChain<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/17aitech.com\/?p=14228\/#%E8%BF%94%E5%9B%9E%E4%BF%A1%E6%81%AF\" >\u8fd4\u56de\u4fe1\u606f<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/17aitech.com\/?p=14228\/#%E8%A1%A5%E5%85%85%E5%86%85%E5%AE%B9\" >\u8865\u5145\u5185\u5bb9<\/a><ul class='ez-toc-list-level-4' ><li class='ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"https:\/\/17aitech.com\/?p=14228\/#%E6%A8%A1%E5%9E%8B%E7%B1%BB%E5%9E%8B\" >\u6a21\u578b\u7c7b\u578b<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-14\" href=\"https:\/\/17aitech.com\/?p=14228\/#%E8%B0%83%E7%94%A8%E6%96%B9%E5%BC%8F\" >\u8c03\u7528\u65b9\u5f0f<\/a><\/li><\/ul><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-15\" href=\"https:\/\/17aitech.com\/?p=14228\/#%E5%86%85%E5%AE%B9%E5%B0%8F%E7%BB%93\" >\u5185\u5bb9\u5c0f\u7ed3<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-16\" href=\"https:\/\/17aitech.com\/?p=14228\/#%E5%8F%82%E8%80%83%E8%B5%84%E6%96%99\" >\u53c2\u8003\u8d44\u6599<\/a><\/li><\/ul><\/nav><\/div>\n<h2><span class=\"ez-toc-section\" id=\"%E5%89%8D%E8%A8%80\"><\/span>\u524d\u8a00<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>\u5728\u4e0a\u4e00\u7ae0<a href=\"https:\/\/17aitech.com\/?p=13611\">\u3010\u8bfe\u7a0b\u603b\u7ed3\u3011day24\uff08\u4e0a\uff09\uff1a\u5927\u6a21\u578b\u4e09\u9636\u6bb5\u8bad\u7ec3\u65b9\u6cd5(LLaMa Factory)<\/a>\u5185\u5bb9\u4e2d\u4e3b\u8981\u4e86\u89e3\u4e00\u4e2a\u5927\u6a21\u578b\u7684\u8bad\u7ec3\u8fc7\u7a0b\uff0c\u65e0\u8bba\u662f\u7b2c\u4e09\u65b9\u7684\u5927\u6a21\u578b\u8fd8\u662f\u81ea\u7814\u7684\u5927\u6a21\u578b\uff0c\u90fd\u9700\u8981\u90e8\u7f72\u5230\u670d\u52a1\u7aef\uff0c\u63d0\u4f9b\u5bf9\u5e94API\u63a5\u53e3\u4f9b\u4e0a\u5c42\u5e94\u7528\u4f7f\u7528\u3002\u6240\u4ee5\uff0c\u672c\u7ae0\u5c06\u4e3b\u8981\u4e86\u89e3vLLm + langchain\u7684\u57fa\u672c\u4f7f\u7528\u65b9\u6cd5\u3002<\/p>\n<h2><span class=\"ez-toc-section\" id=\"%E5%A4%A7%E6%A8%A1%E5%9E%8B%E5%BA%94%E7%94%A8%E6%A1%86%E6%9E%B6\"><\/span>\u5927\u6a21\u578b\u5e94\u7528\u6846\u67b6<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><a href=\"https:\/\/17aitech.com\/wp-content\/uploads\/2024\/08\/\u5927\u6a21\u578b\u5e94\u7528\u6846\u67b6-1.png\" data-fancybox=\"images\" data-fancybox=\"gallery\"><img decoding=\"async\" src=\"https:\/\/17aitech.com\/wp-content\/uploads\/2024\/08\/\u5927\u6a21\u578b\u5e94\u7528\u6846\u67b6-1.png\" alt=\"\" \/><\/a><\/p>\n<p>\u4e00\u822c\u6765\u8bf4\uff0c\u5927\u6a21\u578b\u5e94\u7528\u7684\u6574\u4f53\u7ed3\u6784\u53ef\u4ee5\u5212\u5206\u4e3a\u51e0\u4e2a\u5c42\u6b21\uff1a<\/p>\n<ul>\n<li>\u6a21\u578b\u5c42\uff1a\n<ul>\n<li>\u529f\u80fd\uff1a\u8d1f\u8d23\u5904\u7406\u8f93\u5165\u6570\u636e\u5e76\u751f\u6210\u8f93\u51fa\u3002<\/li>\n<li>\u4ee3\u8868\uff1aBERT\u3001GPT\u3001Qwen2\u7b49\u7b49<\/li>\n<\/ul>\n<\/li>\n<li>\u63a8\u7406\u5c42\uff1a\n<ul>\n<li>\u529f\u80fd\uff1a\u5c06\u5927\u6a21\u578b\u90e8\u7f72\u5230\u670d\u52a1\u7aef\uff0c\u66b4\u9732API\u3002\uff08\u884c\u4e1a\u666e\u904d\u89c4\u8303\u662fOpenAI compatible API\uff09<\/li>\n<li>\u4ee3\u8868\uff1avLLM<\/li>\n<\/ul>\n<\/li>\n<li>API\u5c42\uff1a\n<ul>\n<li>\u529f\u80fd\uff1a\u5c06\u8bed\u8a00\u6a21\u578b\u4e0e\u5176\u4ed6\u6570\u636e\u6e90\u3001API \u548c\u670d\u52a1\u96c6\u6210\uff0c\u65b9\u4fbf\u4e0a\u5c42\u5e94\u7528\u5f00\u53d1\u3002<\/li>\n<li>\u4ee3\u8868\uff1aLangChain<\/li>\n<\/ul>\n<\/li>\n<li>\u5e94\u7528\u5c42\uff1a\n<ul>\n<li>\u529f\u80fd\uff1a\u533b\u7597\u3001\u6559\u80b2\u3001\u91d1\u878d\u3001\u6cd5\u5f8b\u7b49\u5782\u7c7b\u5e94\u7528\u7684\u5177\u4f53\u652f\u6491\u7cfb\u7edf<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>\u57fa\u4e8e\u4ee5\u4e0a\u7684\u5c42\u6b21\u4fe1\u606f\uff0c\u6211\u4eec\u63a5\u4e0b\u6765\u521d\u6b65\u4e86\u89e3\u884c\u4e1a\u76ee\u524d\u666e\u904d\u4f7f\u7528\u7684\uff1a<code>vLLM + LangChain<\/code>\u3002<\/p>\n<h3><span class=\"ez-toc-section\" id=\"vLLM\"><\/span>vLLM<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><strong>\u7b80\u4ecb<\/strong>\uff1a<br \/>\n<code>vLLM<\/code> \u662f\u4e00\u4e2a\u4e13\u4e3a\u5927\u8bed\u8a00\u6a21\u578b<code>\uff08LLMs\uff09<\/code>\u8bbe\u8ba1\u7684<strong>\u9ad8\u6548\u63a8\u7406\u5e93<\/strong>\uff0c\u65e8\u5728<strong>\u4f18\u5316\u63a8\u7406\u901f\u5ea6<\/strong>\u548c<strong>\u5185\u5b58\u4f7f\u7528<\/strong>\u3002\u5b83\u901a\u8fc7<strong>\u52a8\u6001\u8ba1\u7b97\u56fe<\/strong>\u548c<strong>\u5148\u8fdb\u7684\u5185\u5b58\u7ba1\u7406<\/strong>\u6280\u672f\uff0c\u5e2e\u52a9\u5f00\u53d1\u8005\u5728<strong>\u8d44\u6e90\u6709\u9650<\/strong>\u7684\u60c5\u51b5\u4e0b<strong>\u9ad8\u6548\u5730\u8fd0\u884c\u5927\u578b\u6a21\u578b<\/strong>\u3002vLLM \u652f\u6301\u591a\u79cd\u6d41\u884c\u7684\u8bed\u8a00\u6a21\u578b\uff0c\u4f7f\u5f97\u7528\u6237\u80fd\u591f\u5feb\u901f\u5207\u6362\u548c\u6bd4\u8f83\u4e0d\u540c\u7684\u6a21\u578b\uff0c\u9002\u7528\u4e8e\u5b9e\u65f6\u5e94\u7528\u573a\u666f\u3002<\/p>\n<p><strong>\u7f51\u5740<\/strong>\uff1a<br \/>\n<a href=\"https:\/\/docs.vllm.ai\/en\/latest\/index.html\">https:\/\/docs.vllm.ai\/en\/latest\/index.html<\/a><\/p>\n<p><strong>\u4f5c\u7528<\/strong>\uff1a<\/p>\n<ul>\n<li>\u628a\u5927\u6a21\u578b\u90e8\u7f72\u5230\u670d\u52a1\u7aef\uff0c\u66b4\u9732OpenAI compatible API<\/li>\n<li>\u63d0\u5347\u6027\u80fd: \u4f7f\u5f97\u5927\u6a21\u578b\u5728\u63a8\u7406\u65f6\u66f4\u52a0\u5feb\u901f\u548c\u9ad8\u6548\u3002<\/li>\n<li>\u964d\u4f4e\u6210\u672c: \u51cf\u5c11\u8ba1\u7b97\u8d44\u6e90\u9700\u6c42\uff0c\u964d\u4f4e\u4e91\u8ba1\u7b97\u548c\u786c\u4ef6\u6210\u672c\u3002<\/li>\n<\/ul>\n<h3><span class=\"ez-toc-section\" id=\"LangChain\"><\/span>LangChain<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><strong>\u7b80\u4ecb<\/strong>\uff1a<br \/>\n<code>LangChain<\/code> \u662f\u4e00\u4e2a\u5f00\u6e90\u6846\u67b6\uff0c\u65e8\u5728<strong>\u5e2e\u52a9\u5f00\u53d1\u8005\u6784\u5efa\u57fa\u4e8e\u8bed\u8a00\u6a21\u578b\u7684\u5e94\u7528<\/strong>\u3002\u5b83\u901a\u8fc7\u63d0\u4f9b\u4e00\u7cfb\u5217<strong>\u5de5\u5177\u548c\u7ec4\u4ef6<\/strong>\uff0c<strong>\u7b80\u5316\u4e86<\/strong>\u8bed\u8a00\u6a21\u578b\u4e0e\u5176\u4ed6\u6570\u636e\u6e90\u3001API \u548c\u670d\u52a1\u7684\u96c6\u6210<strong>\u8fc7\u7a0b<\/strong>\u3002<code>LangChain<\/code> \u5141\u8bb8\u7528\u6237\u6784\u5efa\u590d\u6742\u7684\u5de5\u4f5c\u6d41\uff0c\u589e\u5f3a\u4e86\u8bed\u8a00\u6a21\u578b\u7684\u529f\u80fd\u548c\u7075\u6d3b\u6027\uff0c\u9002\u7528\u4e8e\u591a\u79cd\u5e94\u7528\u573a\u666f\u3002<\/p>\n<p>\u7f51\u5740\uff1a<a href=\"https:\/\/www.langchain.com\/langchain\">https:\/\/www.langchain.com\/langchain<\/a><\/p>\n<p>\u4f5c\u7528\uff1a<\/p>\n<ul>\n<li>\u7b80\u5316\u5f00\u53d1: \u63d0\u4f9b\u9ad8\u5c42\u6b21\u7684\u62bd\u8c61\uff0c\u964d\u4f4e\u6280\u672f\u95e8\u69db\u3002<\/li>\n<li>\u589e\u5f3a\u529f\u80fd: \u6269\u5c55\u8bed\u8a00\u6a21\u578b\u7684\u80fd\u529b\uff0c\u5904\u7406\u66f4\u590d\u6742\u7684\u4efb\u52a1\u3002<\/li>\n<\/ul>\n<h2><span class=\"ez-toc-section\" id=\"%E9%83%A8%E7%BD%B2%E6%96%B9%E6%B3%95\"><\/span>\u90e8\u7f72\u65b9\u6cd5<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3><span class=\"ez-toc-section\" id=\"%E5%87%86%E5%A4%87%E6%A8%A1%E5%9E%8B\"><\/span>\u51c6\u5907\u6a21\u578b<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u7531\u4e8e<a href=\"https:\/\/17aitech.com\/?p=13611\">\u4e0a\u4e00\u7ae0<\/a>\u4e2d\u8bad\u7ec3\u7684\u533b\u7597\u5927\u6a21\u578b \u968f\u7740\u5bb9\u5668\u7684\u5173\u95ed\u5df2\u7ecf\u88ab\u6e05\u7406\uff0c\u6240\u4ee5\u672c\u6b21\u5b9e\u8df5\u9009\u62e9\u4e86<code>Qwen2-0.5B-Instruct<\/code>\u3002<\/p>\n<pre><code class=\"language-bash\">git clone https:\/\/www.modelscope.cn\/qwen\/Qwen2-0.5B-Instruct.git<\/code><\/pre>\n<h3><span class=\"ez-toc-section\" id=\"%E5%AE%89%E8%A3%85vLLM\"><\/span>\u5b89\u88c5vLLM<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<pre><code class=\"language-bash\">pip install vllm<\/code><\/pre>\n<p>\u5b89\u88c5\u5b8c\u6bd5\u540e\uff0c\u53ef\u4ee5\u901a\u8fc7\u5982\u4e0b\u547d\u4ee4\u67e5\u770b\u5b89\u88c5\u60c5\u51b5<\/p>\n<pre><code class=\"language-bash\">pip show vllm<\/code><\/pre>\n<p>\u8fd0\u884c\u7ed3\u679c\uff1a<\/p>\n<pre><code class=\"language-bash\">Name: vllm\nVersion: 0.5.1\nSummary: A high-throughput and memory-efficient inference and serving engine for LLMs\nHome-page: https:\/\/github.com\/vllm-project\/vllm\nAuthor: vLLM Team\nAuthor-email: \nLicense: Apache 2.0\nLocation: \/usr\/local\/lib\/python3.10\/site-packages\nRequires: aiohttp, cmake, fastapi, filelock, lm-format-enforcer, ninja, numpy, nvidia-ml-py, openai, outlines, pillow, prometheus-client, prometheus-fastapi-instrumentator, psutil, py-cpuinfo, pydantic, ray, requests, sentencepiece, tiktoken, tokenizers, torch, torchvision, tqdm, transformers, typing-extensions, uvicorn, vllm-flash-attn, xformers\nRequired-by: <\/code><\/pre>\n<h3><span class=\"ez-toc-section\" id=\"%E9%83%A8%E7%BD%B2vLLM\"><\/span>\u90e8\u7f72vLLM<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<pre><code class=\"language-bash\">python -m vllm.entrypoints.openai.api_server --model Qwen2-0.5B-Instruct --host 0.0.0.0 --port 8000<\/code><\/pre>\n<blockquote>\n<p>\u2757<code>Qwen2-0.5B-Instruct<\/code> \u5bf9\u5e94\u6a21\u578b\u7684\u6587\u4ef6\u5939\u540d\u5b57\uff0c\u7531\u4e8eLinux\u4e0b\u6587\u4ef6\u8def\u5f84\u5927\u5c0f\u5199\u654f\u611f\uff0c\u6240\u4ee5\u6b64\u5904\u9700\u8981\u4fdd\u6301\u5927\u5c0f\u5199\u4e00\u81f4\u3002<\/p>\n<\/blockquote>\n<p>\u6210\u529f\u90e8\u7f72\u540e\u663e\u793a\uff1a<\/p>\n<pre><code class=\"language-bash\">INFO:     Started server process [1657]\nINFO:     Waiting for application startup.\nINFO:     Application startup complete.\nINFO:     Uvicorn running on http:\/\/0.0.0.0:8000 (Press CTRL+C to quit)<\/code><\/pre>\n<p>\u6211\u4eec\u4f7f\u7528OpenAI compatible API\u63a5\u53e3\u6d4b\u8bd5\u90e8\u7f72\u60c5\u51b5\uff1a<\/p>\n<pre><code class=\"language-python\">from openai import OpenAI\n# Set OpenAI&#039;s API key and API base to use vLLM&#039;s API server.\nopenai_api_key = &quot;EMPTY&quot;\nopenai_api_base = &quot;http:\/\/localhost:8000\/v1&quot;\n\nclient = OpenAI(\n    api_key=openai_api_key,\n    base_url=openai_api_base,\n)\n\nchat_response = client.chat.completions.create(\n    model=&quot;Qwen2-0.5B-Instruct&quot;,\n    messages=[\n        {&quot;role&quot;: &quot;system&quot;, &quot;content&quot;: &quot;\u4f60\u662f\u4e00\u4e2a\u5f88\u6709\u7528\u7684\u52a9\u624b\u3002&quot;},\n        {&quot;role&quot;: &quot;user&quot;, &quot;content&quot;: &quot;\u4e2d\u534e\u4eba\u6c11\u5171\u548c\u56fd\u7684\u9996\u90fd\u662f\u54ea\u91cc\uff1f&quot;},\n    ]\n)\nprint(&quot;Chat response:&quot;, chat_response)<\/code><\/pre>\n<p>\u8fd0\u884c\u7ed3\u679c\uff1a<br \/>\n<a href=\"https:\/\/17aitech.com\/wp-content\/uploads\/2024\/08\/vLLm\u90e8\u7f72\u6d4b\u8bd5.png\" data-fancybox=\"images\" data-fancybox=\"gallery\"><img decoding=\"async\" src=\"https:\/\/17aitech.com\/wp-content\/uploads\/2024\/08\/vLLm\u90e8\u7f72\u6d4b\u8bd5.png\" alt=\"\" \/><\/a><\/p>\n<blockquote>\n<p>\u4e0a\u8ff0\u7684Python\u4ee3\u7801\u4ec5\u662f\u6d4b\u8bd5vLLm\u7684\u90e8\u7f72\u60c5\u51b5\uff0c\u5b9e\u9645\u5e94\u7528\u4e2d\uff0c\u9700\u8981\u4f7f\u7528<code>LangChain<\/code>\u8fdb\u884c\u8fdb\u4e00\u6b65\u5c01\u88c5\u3002<\/p>\n<\/blockquote>\n<p>\u4f7f\u7528<code>nvidia-smi<\/code>\u67e5\u770b\u663e\u5b58\uff0c\u53ef\u4ee5\u770b\u5230\u663e\u5b58\u5df2\u7ecf\u88ab\u5360\u752819G\u3002<\/p>\n<pre><code class=\"language-bash\">root@dsw-624205-75f5bf5ffb-cm59j:\/mnt\/workspace# nvidia-smi\nThu Aug 15 17:29:21 2024       \n+-----------------------------------------------------------------------------+\n| NVIDIA-SMI 470.103.01   Driver Version: 470.103.01   CUDA Version: 12.1     |\n|-------------------------------+----------------------+----------------------+\n| GPU  Name        Persistence-M| Bus-Id        Disp.A | Volatile Uncorr. ECC |\n| Fan  Temp  Perf  Pwr:Usage\/Cap|         Memory-Usage | GPU-Util  Compute M. |\n|                               |                      |               MIG M. |\n|===============================+======================+======================|\n|   0  NVIDIA A10          On   | 00000000:00:07.0 Off |                    0 |\n|  0%   53C    P0    61W \/ 150W |  19874MiB \/ 22731MiB |      0%      Default |\n|                               |                      |                  N\/A |\n+-------------------------------+----------------------+----------------------+\n\n+-----------------------------------------------------------------------------+\n| Processes:                                                                  |\n|  GPU   GI   CI        PID   Type   Process name                  GPU Memory |\n|        ID   ID                                                   Usage      |\n|=============================================================================|\n+-----------------------------------------------------------------------------+<\/code><\/pre>\n<h3><span class=\"ez-toc-section\" id=\"%E5%AE%89%E8%A3%85LangChain\"><\/span>\u5b89\u88c5LangChain<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<pre><code class=\"language-bash\">pip install langchain-openai<\/code><\/pre>\n<h2><span class=\"ez-toc-section\" id=\"%E4%BD%BF%E7%94%A8LangChain\"><\/span>\u4f7f\u7528LangChain<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<pre><code class=\"language-python\"># \u5f15\u5165 OpenAI \u652f\u6301\u5e93\nfrom langchain_openai import ChatOpenAI\n\n# \u8fde\u63a5\u4fe1\u606f\nbase_url = &quot;http:\/\/localhost:8000\/v1&quot;\napi_key = &quot;EMPTY&quot;\nmodel_id = &quot;Qwen2-0.5B-Instruct&quot;\n\n# \u8fde\u63a5\u5927\u6a21\u578b\nllm = ChatOpenAI(\n        base_url=base_url,\n        api_key=api_key,\n        model=model_id\n)\n\n# \u5927\u6a21\u578b\u8c03\u7528\nllm.invoke(input= &quot;\u4f60\u662f\u8c01\uff1f&quot;)<\/code><\/pre>\n<p>\u8fd0\u884c\u7ed3\u679c\uff1a<\/p>\n<pre><code class=\"language-bash\">AIMessage(content=&#039;\u6211\u662f\u6765\u81ea\u963f\u91cc\u4e91\u7684\u5927\u89c4\u6a21\u8bed\u8a00\u6a21\u578b\uff0c\u6211\u53eb\u901a\u4e49\u5343\u95ee\u3002&#039;, \nadditional_kwargs={\n  &#039;refusal&#039;: None}, response_metadata={&#039;token_usage&#039;: \n  {&#039;completion_tokens&#039;: 17, &#039;prompt_tokens&#039;: 22, &#039;total_tokens&#039;: 39}, \n  &#039;model_name&#039;: &#039;Qwen2-0.5B-Instruct&#039;, \n  &#039;system_fingerprint&#039;: None, \n  &#039;finish_reason&#039;: &#039;stop&#039;, \n  &#039;logprobs&#039;: None}, \n  id=&#039;run-ca1584a6-0ff5-4d49-bfb2-ad932231e762-0&#039;, \nusage_metadata={&#039;input_tokens&#039;: 22, &#039;output_tokens&#039;: 17, &#039;total_tokens&#039;: 39})<\/code><\/pre>\n<h3><span class=\"ez-toc-section\" id=\"%E8%BF%94%E5%9B%9E%E4%BF%A1%E6%81%AF\"><\/span>\u8fd4\u56de\u4fe1\u606f<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u5982\u679c\u4f7f\u7528<code>result = llm.invoke(input= &quot;\u4f60\u662f\u8c01\uff1f&quot;)<\/code>\uff0c\u7136\u540e\u67e5\u770bresult\u4fe1\u606f\uff0c\u53ef\u4ee5\u67e5\u770b\u66f4\u591a\u4fe1\u606f\u3002<\/p>\n<ul>\n<li>\n<p>result.content<\/p>\n<pre><code class=\"language-python\">&#039;\u6211\u662f\u6765\u81ea\u963f\u91cc\u4e91\u7684\u5927\u89c4\u6a21\u8bed\u8a00\u6a21\u578b\uff0c\u6211\u53eb\u901a\u4e49\u5343\u95ee\u3002&#039;<\/code><\/pre>\n<\/li>\n<li>\n<p>result.response_metadata<\/p>\n<pre><code class=\"language-python\">{&#039;token_usage&#039;: {&#039;completion_tokens&#039;: 17,\n&#039;prompt_tokens&#039;: 22,\n&#039;total_tokens&#039;: 39},\n&#039;model_name&#039;: &#039;Qwen2-0.5B-Instruct&#039;,\n&#039;system_fingerprint&#039;: None,\n&#039;finish_reason&#039;: &#039;stop&#039;,\n&#039;logprobs&#039;: None}<\/code><\/pre>\n<p>\u8bf4\u660e\uff1a<\/p>\n<\/li>\n<li>\n<p><code>completion_tokens<\/code>: \u751f\u6210\u7684\u6587\u672c\u4e2d\u4f7f\u7528\u7684\u4ee4\u724c\u6570\u3002\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0c\u751f\u6210\u7684\u6587\u672c\u5305\u542b <code>17<\/code> \u4e2a\u4ee4\u724c\uff08token\uff09\u3002<\/p>\n<\/li>\n<li>\n<p><code>prompt_tokens<\/code>: \u8f93\u5165\u63d0\u793a\u4e2d\u4f7f\u7528\u7684\u4ee4\u724c\u6570\u3002\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0c\u8f93\u5165\u7684\u63d0\u793a\u5305\u542b <code>22<\/code> \u4e2a\u4ee4\u724c\u3002<\/p>\n<\/li>\n<li>\n<p><code>total_tokens<\/code>: \u603b\u4ee4\u724c\u6570\uff0c\u5373 <code>completion_tokens<\/code> \u548c <code>prompt_tokens<\/code> \u7684\u603b\u548c\u3002\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0c\u603b\u4ee4\u724c\u6570\u4e3a 39\u3002<\/p>\n<\/li>\n<li>\n<p><code>finish_reason<\/code>: \u8868\u793a\u751f\u6210\u6587\u672c\u7684\u7ed3\u675f\u539f\u56e0\u3002\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0c<code>finish_reason <\/code>\u7684\u503c\u4e3a <code>stop<\/code>\uff0c\u610f\u5473\u7740\u6587\u672c\u751f\u6210\u5728\u8fbe\u5230\u9884\u5b9a\u6761\u4ef6\u540e\u6b63\u5e38\u7ed3\u675f\u3002<\/p>\n<\/li>\n<li>\n<p><code>logprobs<\/code>: \u8be5\u5b57\u6bb5\u901a\u5e38\u7528\u4e8e\u63d0\u4f9b\u751f\u6210\u8fc7\u7a0b\u4e2d\u6bcf\u4e2a\u4ee4\u724c\u7684\u5bf9\u6570\u6982\u7387\u3002\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0c\u5b83\u7684\u503c\u4e3a None\uff0c\u8868\u793a\u6ca1\u6709\u63d0\u4f9b\u8fd9\u4e9b\u4fe1\u606f\u3002<\/p>\n<\/li>\n<\/ul>\n<h3><span class=\"ez-toc-section\" id=\"%E8%A1%A5%E5%85%85%E5%86%85%E5%AE%B9\"><\/span>\u8865\u5145\u5185\u5bb9<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<h4><span class=\"ez-toc-section\" id=\"%E6%A8%A1%E5%9E%8B%E7%B1%BB%E5%9E%8B\"><\/span>\u6a21\u578b\u7c7b\u578b<span class=\"ez-toc-section-end\"><\/span><\/h4>\n<p>\u6a21\u578b\u5e38\u89c4\u60c5\u51b5\u4e0b\u6709\u4e24\u79cd\u7c7b\u578b\uff1aBase\u7c7b\u578b \u548c Chat\u7c7b\u578b\u3002<\/p>\n<ul>\n<li><code>Qwen2-0.5B<\/code>: \u4ee3\u8868Qwen2-0.5B\u7684Base\u7c7b\u578b\u6a21\u578b\u3002<\/li>\n<li><code>Qwen2-0.5B-Instruct<\/code>: \u4ee3\u8868Qwen2-0.5B\u7684Chat\u7c7b\u578b\u6a21\u578b\u3002<\/li>\n<\/ul>\n<h4><span class=\"ez-toc-section\" id=\"%E8%B0%83%E7%94%A8%E6%96%B9%E5%BC%8F\"><\/span>\u8c03\u7528\u65b9\u5f0f<span class=\"ez-toc-section-end\"><\/span><\/h4>\n<p>\u7531\u4e8e\u6a21\u578b\u7684\u7c7b\u578b\u4e0d\u540c\uff0c\u90a3\u4e48\u5728LangChain\u4e2d\u8c03\u7528\u65b9\u5f0f\u4e5f\u4e0d\u540c\u3002<\/p>\n<pre><code class=\"language-python\">from langchain_openai import OpenAI\n\nbase_url = &quot;http:\/\/localhost:8000\/v1&quot;\napi_key = &quot;EMPTY&quot;\nmodel_id = &quot;Qwen2-0.5B-Instruct&quot;\n\n# Base\u65b9\u5f0f\u8c03\u7528\u4e86\u4e00\u4e2aChat\u7c7b\u578b\u6a21\u578b\nmodel = OpenAI(base_url=base_url, api_key=api_key, model=model_id)\n\nprint(model.invoke(input=&quot;\u4f60\u662f\u8c01&quot;))<\/code><\/pre>\n<p>\u8fd0\u884c\u7ed3\u679c\uff1a<br \/>\n<a href=\"https:\/\/17aitech.com\/wp-content\/uploads\/2024\/08\/base\u65b9\u5f0f\u8c03\u7528Chat\u7c7b\u578b.png\" data-fancybox=\"images\" data-fancybox=\"gallery\"><img decoding=\"async\" src=\"https:\/\/17aitech.com\/wp-content\/uploads\/2024\/08\/base\u65b9\u5f0f\u8c03\u7528Chat\u7c7b\u578b.png\" alt=\"\" \/><\/a><\/p>\n<p>\u53ef\u4ee5\u770b\u5230\uff1a<\/p>\n<ul>\n<li>\u540c\u6837\u7684\u6a21\u578b\uff0c\u540c\u6837\u7684\u95ee\u9898\uff0c\u8c03\u7528\u65b9\u5f0f\u7684\u4e0d\u540c\uff0c\u8c03\u7528\u7684\u7ed3\u679c\u5374\u5343\u5dee\u4e07\u522b\u3002<\/li>\n<li>\u7b2c\u4e00\u79cd\u4f7f\u7528<code>from langchain_openai import ChatOpenAI<\/code>\uff0c\u5373Chat\u65b9\u5f0f\u8c03\u7528\u4e00\u4e2aInstruct\u7c7b\u578b\u6a21\u578b\uff0c\u7ed3\u679c\u662f\u6b63\u5e38\u7684\u3002<\/li>\n<li>\u7b2c\u4e8c\u79cd\u4f7f\u7528<code>from langchain_openai import OpenAI<\/code>\uff0c\u5373Base\u65b9\u5f0f\u8c03\u7528\u4e00\u4e2aInstruct\u7c7b\u578b\u6a21\u578b\uff0c\u7ed3\u679c\u662f\u6709\u95ee\u9898\u7684\u3002<\/li>\n<li>Chat\u65b9\u5f0f\u8fd4\u56de\u7684\u4fe1\u606f\u662f\u4e00\u4e2aAIMessage\uff0c\u800cBase\u65b9\u5f0f\u8fd4\u56de\u7684\u662f\u4e00\u4e2a\u5b57\u7b26\u4e32\u3002<\/li>\n<\/ul>\n<h2><span class=\"ez-toc-section\" id=\"%E5%86%85%E5%AE%B9%E5%B0%8F%E7%BB%93\"><\/span>\u5185\u5bb9\u5c0f\u7ed3<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<ul>\n<li><code>vLLM<\/code> \u662f\u4e00\u4e2a\u4e13\u4e3a\u5927\u8bed\u8a00\u6a21\u578b<code>\uff08LLMs\uff09<\/code>\u8bbe\u8ba1\u7684<strong>\u9ad8\u6548\u63a8\u7406\u5e93<\/strong>\uff0c\u65e8\u5728<strong>\u4f18\u5316\u63a8\u7406\u901f\u5ea6<\/strong>\u548c<strong>\u5185\u5b58\u4f7f\u7528<\/strong>\u3002<\/li>\n<li><code>LangChain<\/code> \u662f\u4e00\u4e2a\u5f00\u6e90\u6846\u67b6\uff0c\u65e8\u5728<strong>\u5e2e\u52a9\u5f00\u53d1\u8005\u6784\u5efa\u57fa\u4e8e\u8bed\u8a00\u6a21\u578b\u7684\u5e94\u7528<\/strong>\u3002<\/li>\n<li><code>vLLM<\/code> \u548c <code>LangChain<\/code> \u90fd\u53ef\u4ee5\u4f7f\u7528pip install\u5b89\u88c5\u3002<\/li>\n<li>\u6a21\u578b\u6709\u5d4c\u5165\u7c7b\u578b\u548c\u5e38\u89c4\u7c7b\u578b\uff1b\u5e38\u89c4\u7c7b\u578b\u4e0b\u6709<code>Base\u7c7b\u578b<\/code> \u548c <code>Chat\u7c7b\u578b<\/code> \u4e24\u79cd\u7c7b\u578b\u3002<\/li>\n<li>\u4e0d\u540c\u7c7b\u578b\u7684\u6a21\u578b\u8c03\u7528\u65b9\u5f0f\u4e0d\u540c\uff0c\u5982\u679c\u6a21\u578b\u7c7b\u578b\u4e0e\u8c03\u7528\u65b9\u5f0f\u6ca1\u6709\u5bf9\u5e94\uff0c\u53ef\u80fd\u4f1a\u51fa\u73b0\u7ed3\u679c\u5f02\u5e38\u3002<\/li>\n<\/ul>\n<h2><span class=\"ez-toc-section\" id=\"%E5%8F%82%E8%80%83%E8%B5%84%E6%96%99\"><\/span>\u53c2\u8003\u8d44\u6599<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><a href=\"https:\/\/docs.vllm.ai\/en\/latest\/getting_started\/quickstart.html\">vLLm\u5b98\u7f51\u6307\u5357\u6587\u6863<\/a><br \/>\n<a href=\"https:\/\/python.langchain.com\/v0.2\/docs\/tutorials\/llm_chain\/\">LangChain\u5b98\u7f51\u6307\u5357\u6587\u6863<\/a><\/p>\n<p align=\"center\">\u6b22\u8fce\u5173\u6ce8\u516c\u4f17\u53f7\u4ee5\u83b7\u5f97\u6700\u65b0\u7684\u6587\u7ae0\u548c\u65b0\u95fb<\/p>\n<p><a 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