{"id":101272,"date":"2026-09-06T15:17:05","date_gmt":"2026-09-06T07:17:05","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/101272.html"},"modified":"2026-09-06T15:17:05","modified_gmt":"2026-09-06T07:17:05","slug":"%e5%a4%a7%e6%a8%a1%e5%9e%8b%e6%8e%a8%e7%90%86%e7%9a%84%e4%b8%a4%e9%98%b6%e6%ae%b5%ef%bc%9a%e4%b8%80%e6%ac%a1-prefill%ef%bc%8c%e5%8a%a0%e4%b8%8a%e5%a4%9a%e6%ac%a1-decode","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/101272.html","title":{"rendered":"\u5927\u6a21\u578b\u63a8\u7406\u7684\u4e24\u9636\u6bb5\uff1a\u4e00\u6b21 Prefill\uff0c\u52a0\u4e0a\u591a\u6b21 Decode"},"content":{"rendered":"<p>\u4f60\u8ddf DeepSeek\u3001\u901a\u4e49\u3001GPT \u8fd9\u7c7b\u5927\u6a21\u578b\u804a\u8fc7\u5929&#xff0c;\u5e94\u8be5\u90fd\u89c1\u8fc7\u90a3\u4e2a\u753b\u9762\u2014\u2014<\/p>\n<p>\u95ee\u5b8c\u95ee\u9898&#xff0c;\u5b57\u662f\u4e00\u4e2a\u4e00\u4e2a\u5f80\u5916\u8e66\u7684&#xff0c;\u50cf\u6709\u4eba\u5728\u4f60\u5bf9\u9762\u73b0\u60f3\u73b0\u8bf4\u3002<\/p>\n<p>\u53ef\u6a21\u578b\u6ca1\u6709\u610f\u8bc6&#xff0c;\u5b83\u4e0d\u4f1a\u73b0\u60f3\u73b0\u8bf4\u3002<\/p>\n<p>\u4f60\u6572\u4e0b\u56de\u8f66\u7684\u90a3\u4e00\u523b&#xff0c;\u5b83\u5176\u5b9e\u662f\u5728\u91cd\u590d\u6267\u884c\u540c\u4e00\u79cd\u751f\u6210\u8fc7\u7a0b\u3002<\/p>\n<p>\u6211\u5728\u300a\u5927\u6a21\u578b\u63a8\u7406\u65f6&#xff0c;\u5230\u5e95\u5728\u5e72\u4e00\u4ef6\u4ec0\u4e48\u4e8b&#xff1f;\u300b\u91cc\u8bb2\u8fc7&#xff0c;\u4e00\u6b21\u63a8\u7406\u5176\u5b9e\u5206 Prefill \u548c Decode \u4e24\u6b65\u3002\u90a3\u7bc7\u53ea\u662f\u5e26\u8fc7&#xff0c;\u8fd9\u7bc7\u628a\u6bcf\u4e00\u6b65\u7684\u8f93\u5165\u3001\u8f93\u51fa\u548c\u8282\u594f\u644a\u5f00\u8bb2\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/09\/20260906071701-6a9d136d73784.png\" alt=\"\" \/><\/p>\n<h3>Prefill&#xff1a;\u4e00\u53e3\u6c14\u628a\u95ee\u9898\u8bfb\u8fdb\u6a21\u578b&#xff0c;\u5410\u51fa\u7b2c\u4e00\u4e2a token<\/h3>\n<p>\u7b2c\u4e00\u6bb5\u53eb Prefill&#xff08;\u9884\u586b\u5145&#xff09;\u3002<\/p>\n<p>\u5b83\u5e72\u7684\u4e8b\u5f88\u5355\u7eaf&#xff1a;<\/p>\n<p>\u628a\u4f60\u6574\u6bb5\u63d0\u793a\u8bcd\u4e00\u6b21\u6027\u9001\u8fdb\u6a21\u578b&#xff0c;\u5b8c\u6210\u4e00\u6b21\u524d\u5411\u8ba1\u7b97&#xff0c;\u5e76\u4ece\u6700\u540e\u4e00\u4e2a\u4f4d\u7f6e\u5f97\u5230\u7b2c\u4e00\u4e2a\u751f\u6210 token\u3002<\/p>\n<p>\u4e0e\u6b64\u540c\u65f6&#xff0c;\u8fd8\u4f1a\u4e3a\u540e\u9762\u7684 Decode \u51c6\u5907\u597d KV Cache\u3002<\/p>\n<p>\u8bf4\u4eba\u8bdd\u5c31\u662f&#xff0c;\u6a21\u578b\u5148\u628a\u4f60\u7684\u95ee\u9898\u4ece\u5934\u8bfb\u5230\u5c3e&#xff0c;\u57fa\u4e8e\u6574\u6bb5\u4e0a\u4e0b\u6587&#xff0c;\u9884\u6d4b\u63a5\u4e0b\u6765\u751f\u6210\u54ea\u4e2a token\u3002<\/p>\n<p>\u4ece&#034;\u751f\u6210\u7b54\u6848&#034;\u8fd9\u4e2a\u89c6\u89d2\u770b&#xff0c;\u4f60\u7ed9\u7684\u662f N \u4e2a\u8f93\u5165 token&#xff0c;Prefill \u6700\u7ec8\u5148\u4ea7\u51fa\u7b2c\u4e00\u4e2a\u751f\u6210 token\u3002<\/p>\n<p>\u6240\u4ee5\u4e3a\u4e86\u65b9\u4fbf\u7406\u89e3&#xff0c;\u53ef\u4ee5\u7c97\u7565\u770b\u6210 N \u5bf9 1\u3002<\/p>\n<p>\u5b83\u4e3a\u4ec0\u4e48\u53eb&#034;\u9884\u586b\u5145&#034;&#xff1f;<\/p>\n<p>\u56e0\u4e3a\u8fd9\u4e00\u6b65\u4f1a\u628a\u8bfb\u5230\u7684\u5185\u5bb9\u5148\u6574\u7406\u3001\u7b97\u597d&#xff0c;\u5e76\u4e3a\u540e\u9762\u7684 Decode \u51c6\u5907\u597d\u7f13\u5b58&#xff0c;\u76f8\u5f53\u4e8e\u5148\u628a\u996d\u76db\u597d&#xff0c;\u540e\u9762\u624d\u80fd\u4e00\u53e3\u4e00\u53e3\u5403\u3002<\/p>\n<h3>Decode&#xff1a;\u4e00\u4e2a\u63a5\u4e00\u4e2a&#xff0c;\u5403\u5230\u7ed3\u675f\u7b26\u624d\u505c<\/h3>\n<p>Prefill \u7ed9\u51fa\u7b2c\u4e00\u4e2a token \u4e4b\u540e&#xff0c;\u6a21\u578b\u5c31\u8fdb\u5165 Decode&#xff08;\u89e3\u7801&#xff09;\u9636\u6bb5\u3002<\/p>\n<p>\u8fd9\u4e00\u6b65\u7684\u8282\u594f\u5b8c\u5168\u53d8\u4e86&#xff1a;<\/p>\n<p>\u4e0a\u4e00\u6b65\u5410\u51fa\u6765\u7684 token&#xff0c;\u4f1a\u88ab\u62ff\u56de\u6765&#xff0c;\u4f5c\u4e3a\u8fd9\u4e00\u8f6e\u65b0\u751f\u6210\u5185\u5bb9\u7684\u4e00\u90e8\u5206\u3002<\/p>\n<p>\u6a21\u578b\u7ed3\u5408\u4e4b\u524d\u5df2\u7ecf\u751f\u6210\u7684\u4e0a\u4e0b\u6587\u548c KV Cache&#xff0c;\u9884\u6d4b\u4e0b\u4e00\u4e2a token\u3002<\/p>\n<p>\u6bcf\u8f6e Decode \u65b0\u589e\u5904\u7406\u7684\u901a\u5e38\u662f 1 \u4e2a token&#xff0c;\u5e76\u9884\u6d4b\u4e0b\u4e00\u4e2a token\u3002<\/p>\n<p>\u6240\u4ee5\u4ece\u751f\u6210\u7c92\u5ea6\u6765\u770b&#xff0c;Decode \u53ef\u4ee5\u7c97\u7565\u770b\u6210 1 \u5bf9 1\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/09\/20260906071702-6a9d136e597b9.png\" alt=\"\" \/><\/p>\n<p>\u62ff \u201cWhat is LLM inference\u201d \u8fd9\u4e2a\u63d0\u95ee\u4e32\u4e00\u4e0b\u3002<\/p>\n<p>Prefill \u8bfb\u5b8c\u6574\u53e5\u8bdd&#xff0c;\u5047\u8bbe\u8fd9\u4e00\u6b21\u751f\u6210\u7684\u7b2c\u4e00\u4e2a token \u662f LLM&#xff1b;<\/p>\n<p>\u63a5\u7740 Decode \u4e0a\u573a&#xff1a;<\/p>\n<p>\u628a \u201cLLM\u201d \u5582\u56de\u53bb&#xff0c;\u5410\u51fa inference&#xff1b;<\/p>\n<p>\u518d\u5582 inference&#xff0c;\u5410\u51fa\u540e\u9762 \u201cis the process of using a trained model to generate text\u201d \u91cc\u7684\u4e0b\u4e00\u4e2a token\u2026\u2026\u4e00\u76f4\u8fd9\u6837\u63a5\u529b\u3002<\/p>\n<p>\u6a21\u578b\u8fd9\u6b21\u7684\u56de\u7b54\u4ee5 \u201cLLM inference is\u2026\u201d \u5f00\u5934&#xff0c;\u6240\u4ee5\u524d\u4e24\u4e2a\u751f\u6210 token \u6070\u597d\u548c\u95ee\u9898\u91cc\u7684\u8bcd\u957f\u5f97\u4e00\u6837\u3002<\/p>\n<p>\u76f4\u5230\u6a21\u578b\u751f\u6210 EOS&#xff08;End of Sequence&#xff0c;\u5e8f\u5217\u7ed3\u675f\u7b26&#xff09;&#xff0c;\u6216\u8005\u89e6\u53d1\u5176\u4ed6\u505c\u6b62\u6761\u4ef6&#xff0c;\u624d\u505c\u4e0b\u6765\u3002<\/p>\n<p>\u4f60\u770b\u5230\u7684&#034;\u5b57\u4e00\u4e2a\u4e00\u4e2a\u8e66&#034;&#xff0c;\u6b63\u662f Decode \u9636\u6bb5\u5e72\u7684\u4e8b\u3002<\/p>\n<h3>\u4e00\u6b21 Prefill&#xff0c;\u52a0\u4e0a\u591a\u6b21 Decode<\/h3>\n<p>\u628a\u4e0a\u9762\u4e24\u4ef6\u4e8b\u8fde\u8d77\u6765&#xff0c;\u5927\u6a21\u578b\u4e00\u6b21\u751f\u6210\u7684\u6838\u5fc3\u9aa8\u67b6\u5176\u5b9e\u5c31\u4e00\u53e5\u8bdd&#xff1a;<\/p>\n<p>\u4e00\u6b21 Prefill&#xff0c;\u52a0\u4e0a\u591a\u6b21 Decode\u3002<\/p>\n<p>Prefill \u53ea\u8dd1\u4e00\u904d&#xff0c;\u8d1f\u8d23\u5904\u7406\u5b8c\u6574\u8f93\u5165\u3001\u4ea7\u751f\u7b2c\u4e00\u4e2a\u751f\u6210 token&#xff0c;\u5e76\u51c6\u5907\u597d\u540e\u7eed\u8981\u7528\u7684\u7f13\u5b58&#xff1b;<\/p>\n<p>\u540e\u9762\u7684 token&#xff0c;\u5219\u7531 Decode \u4e00\u8f6e\u4e00\u8f6e\u5730\u4ea7\u751f\u3002<\/p>\n<p>\u6bcf\u8f6e Decode \u90fd\u4f1a\u628a\u65b0\u751f\u6210\u7684 token \u63a5\u5165\u4e0a\u4e0b\u6587&#xff0c;\u518d\u9884\u6d4b\u4e0b\u4e00\u4e2a token\u3002<\/p>\n<p>\u751f\u6210\u5f97\u8d8a\u957f&#xff0c;Decode \u9636\u6bb5\u901a\u5e38\u5c31\u8981\u6267\u884c\u8d8a\u591a\u8f6e\u3002<\/p>\n<p>\u5c0f\u8d34\u58eb&#xff1a;<\/p>\n<p>\u4f60\u6709\u65f6\u5019\u4f1a\u89c9\u5f97\u6a21\u578b&#034;\u76f4\u63a5\u6574\u6bb5\u7529\u51fa\u6765&#034;&#xff0c;\u6ca1\u6709\u9010\u5b57\u8e66\u3002<\/p>\n<p>\u90a3\u53ea\u662f\u524d\u7aef\u663e\u793a\u7b56\u7565\u4e0d\u540c\u2014\u2014\u8981\u4e48\u7b49\u6a21\u578b\u5168\u90e8\u751f\u6210\u5b8c&#xff0c;\u518d\u4e00\u6b21\u6027\u628a\u7ed3\u679c\u7529\u7ed9\u4f60&#xff1b;\u8981\u4e48\u8fb9\u751f\u6210\u8fb9\u5f80\u5916\u5410\u3002<\/p>\n<p>\u5e95\u5c42\u6ca1\u53d8&#xff0c;\u4f9d\u7136\u662f\u81ea\u56de\u5f52\u5730\u4e00\u4e2a token \u4e00\u4e2a token \u751f\u6210\u7684&#xff0c;\u533a\u522b\u53ea\u5728\u4e8e\u8981\u4e0d\u8981\u8d70\u6d41\u5f0f\u8f93\u51fa&#xff08;streaming&#xff09;\u3002<\/p>\n<h3>\u4e24\u9636\u6bb5\u4e4b\u5916&#xff0c;\u8fd8\u6709\u5206\u8bcd\u548c\u6301\u7eed\u8c03\u5ea6<\/h3>\n<p>\u6a21\u578b\u4e0d\u76f4\u63a5\u8bfb\u4f60\u7684\u539f\u59cb\u6587\u5b57\u3002<\/p>\n<p>\u4f60\u7684\u95ee\u9898\u5f97\u5148\u7ecf\u8fc7 Tokenize&#xff0c;\u624d\u80fd\u53d8\u6210\u6a21\u578b\u771f\u6b63\u5904\u7406\u7684 token\u3002<\/p>\n<p>\u4f46\u5728\u5b9e\u9645\u63a8\u7406\u670d\u52a1\u91cc&#xff0c;Tokenize \u4e4b\u540e\u8fd8\u4e0d\u662f\u7b80\u5355\u5730&#034;\u76f4\u63a5\u8dd1\u6a21\u578b&#034;\u3002<\/p>\n<p>\u63a8\u7406\u5f15\u64ce\u4f1a\u6301\u7eed\u8fdb\u884c Scheduling&#xff0c;\u6839\u636e\u8bf7\u6c42\u72b6\u6001\u3001KV Cache\u3001GPU \u663e\u5b58\u548c\u8ba1\u7b97\u8d44\u6e90\u7b49\u60c5\u51b5&#xff0c;\u51b3\u5b9a\u8fd9\u4e00\u8f6e\u8c03\u5ea6\u54ea\u4e9b\u8bf7\u6c42\u3001\u5904\u7406\u591a\u5c11 token&#xff0c;\u4ee5\u53ca\u5982\u4f55\u7ec4\u7ec7 Prefill \u548c Decode \u7684\u8ba1\u7b97\u3002<\/p>\n<p>\u4e5f\u5c31\u662f\u8bf4&#xff0c;\u4f60\u4ee5\u4e3a\u7684&#034;\u6a21\u578b\u63a8\u7406&#034;&#xff0c;\u80cc\u540e\u5176\u5b9e\u662f\u4e00\u6574\u6761\u6d41\u6c34\u7ebf&#xff1a;<\/p>\n<p>Tokenize \u2192 \u6301\u7eed\u8c03\u5ea6 \u2192 Prefill \/ Decode \u5faa\u73af<\/p>\n<h3>\u6bcf\u751f\u6210\u4e00\u4e2a token&#xff0c;\u90fd\u7ed5\u4e0d\u5f00\u6a21\u578b\u6743\u91cd<\/h3>\n<p>\u8fd8\u6709\u4e00\u4e2a\u5bb9\u6613\u88ab\u5ffd\u89c6\u7684\u4e8b\u5b9e&#xff1a;<\/p>\n<p>\u4e0d\u7ba1 Prefill \u8fd8\u662f Decode&#xff0c;\u6bcf\u4e00\u6b65\u90fd\u8981\u8ba9\u6a21\u578b\u7684\u53c2\u6570\u53c2\u4e0e\u8ba1\u7b97\u3002<\/p>\n<p>\u4f60\u4e0b\u8f7d\u6a21\u578b\u65f6\u770b\u5230\u7684 7B\u30018B&#xff0c;\u90a3\u4e2a B \u662f Billion&#xff08;\u5341\u4ebf&#xff09;&#xff0c;7B \u5c31\u662f 70 \u4ebf\u4e2a\u53c2\u6570\u503c\u3002<\/p>\n<p>\u5708\u5185\u7ba1\u8fd9\u4e9b\u53c2\u6570\u53eb weights&#xff08;\u6743\u91cd&#xff09;\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/09\/20260906071703-6a9d136f13337.png\" alt=\"\" \/><\/p>\n<p>Prefill \u8981\u7528\u8fd9\u4e9b\u6743\u91cd\u5904\u7406\u6574\u6bb5\u8f93\u5165&#xff1b;<\/p>\n<p>Decode \u6bcf\u751f\u6210\u4e00\u4e2a token&#xff0c;\u4e5f\u8981\u518d\u6b21\u4f7f\u7528\u8fd9\u4e9b\u6743\u91cd\u5b8c\u6210\u4e00\u6b21\u524d\u5411\u8ba1\u7b97\u3002<\/p>\n<p>\u8fd9\u5c31\u610f\u5473\u7740&#xff0c;\u53c2\u6570\u91cf\u8d8a\u5927&#xff0c;\u6bcf\u4e00\u6b65\u6d89\u53ca\u7684\u53c2\u6570\u89c4\u6a21\u901a\u5e38\u4e5f\u8d8a\u5927&#xff0c;\u5bf9\u8ba1\u7b97\u548c\u5185\u5b58\u5e26\u5bbd\u7684\u8981\u6c42\u4e5f\u5f80\u5f80\u66f4\u9ad8\u3002<\/p>\n<p>\u5c0f\u6a21\u578b\u5f80\u5f80\u6bd4\u5927\u6a21\u578b\u56de\u5f97\u5feb&#xff0c;\u4e00\u4e2a\u91cd\u8981\u539f\u56e0\u5c31\u662f\u5b83\u6bcf\u4e00\u6b65\u9700\u8981\u5904\u7406\u7684\u53c2\u6570\u89c4\u6a21\u66f4\u5c0f\u3002<\/p>\n<p>\u5f53\u7136&#xff0c;\u5b9e\u9645\u901f\u5ea6\u8fd8\u4f1a\u53d7\u5230\u5177\u4f53\u786c\u4ef6\u548c\u63a8\u7406\u914d\u7f6e\u7b49\u56e0\u7d20\u5f71\u54cd\u3002<\/p>\n<h3>\u63a8\u7406\u5f15\u64ce&#xff0c;\u672c\u8d28\u5c31\u662f\u628a\u8fd9\u4e24\u9636\u6bb5\u7ec4\u7ec7\u8d77\u6765<\/h3>\n<p>\u8bb2\u5230\u8fd9&#xff0c;\u7ed3\u8bba\u5c31\u6e05\u695a\u4e86\u3002<\/p>\n<p>\u5982\u679c\u628a\u95ee\u9898\u7b80\u5316\u5230\u6700\u6838\u5fc3\u7684\u751f\u6210\u6d41\u7a0b&#xff0c;\u63a8\u7406\u5f15\u64ce\u8981\u505a\u7684&#xff0c;\u5c31\u662f\u628a Prefill \u548c Decode \u8fd9\u4e24\u7c7b\u8ba1\u7b97\u7ec4\u7ec7\u8d77\u6765&#xff0c;\u518d\u901a\u8fc7\u8c03\u5ea6\u628a\u5b83\u4eec\u4e32\u8d77\u6765\u3002<\/p>\n<p>\u4e24\u9636\u6bb5\u770b\u7740\u90fd\u53eb&#034;\u8dd1\u6a21\u578b&#034;&#xff0c;\u4f46\u5e72\u7684\u6d3b\u4e0d\u592a\u4e00\u6837&#xff1a;<\/p>\n<p>Prefill \u662f\u4e00\u6b21\u6027\u628a\u957f\u8f93\u5165\u8dd1\u5b8c\u3001\u987a\u624b\u628a\u7f13\u5b58\u5907\u597d&#xff1b;<\/p>\n<p>Decode \u662f\u53cd\u590d\u8dd1\u5355\u6b65\u3001\u4e0d\u65ad\u628a\u65b0 token \u8ffd\u52a0\u8fdb\u7f13\u5b58\u3002<\/p>\n<p>\u8fd9\u7bc7\u53ea\u628a Prefill \u548c Decode \u7684\u63a5\u529b\u5173\u7cfb\u62c6\u4e86\u51fa\u6765\u3002<\/p>\n<p>\u4e0b\u4e00\u7bc7&#xff0c;\u6211\u4eec\u628a\u8fd9\u6574\u6761\u6d41\u6c34\u7ebf\u4ece 0 \u5230 1 \u8d70\u4e00\u904d&#xff1a;<\/p>\n<p>\u628a\u672c\u7bc7\u4e00\u5e26\u800c\u8fc7\u7684 tokenize\u3001scheduling \u5c55\u5f00\u8bb2\u900f&#xff0c;\u518d\u8865\u4e0a KV cache 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