{"id":2650,"date":"2026-08-31T13:16:07","date_gmt":"2026-08-31T05:16:07","guid":{"rendered":"http:\/\/blog.xtaa.cn\/?p=2650"},"modified":"2026-08-31T13:21:31","modified_gmt":"2026-08-31T05:21:31","slug":"%e5%a4%a7%e6%a8%a1%e5%9e%8b%e8%ae%ad%e7%bb%83%e4%b8%ad%e4%b8%ba%e4%bb%80%e4%b9%88%e7%94%a8fp%ef%bc%8c%e8%80%8c%e4%b8%8d%e6%98%afint","status":"publish","type":"post","link":"http:\/\/blog.xtaa.cn\/index.php\/2026\/08\/31\/%e5%a4%a7%e6%a8%a1%e5%9e%8b%e8%ae%ad%e7%bb%83%e4%b8%ad%e4%b8%ba%e4%bb%80%e4%b9%88%e7%94%a8fp%ef%bc%8c%e8%80%8c%e4%b8%8d%e6%98%afint\/","title":{"rendered":"\u5927\u6a21\u578b\u8bad\u7ec3\u4e2d\u4e3a\u4ec0\u4e48\u7528BP\/FP\uff0c\u800c\u4e0d\u662fINT"},"content":{"rendered":"\n<p>\u5927\u6a21\u578b\u6743\u91cd\u4e2d\u5982\u679c\u4f4d\u6570\u4e00\u6837\uff0c\u90a3\u8bad\u7ec3\u51fa\u7684\u6548\u679c\u662f\u5426\u4e00\u6837\uff0c\u4e3a\u4ec0\u4e48\u8fd8\u8981\u5206\u6d6e\u70b9\u548c\u6574\u6570\uff1f<br>\u4f4d\u6570\u76f8\u540c\u2260\u6548\u679c\u76f8\u540c\uff0c\u6838\u5fc3\u5dee\u5f02\u5728\u4e8e\u200c<strong>\u6570\u503c\u8868\u793a\u903b\u8f91<\/strong>\u200c\u4e0e\u200c<strong>\u52a8\u6001\u8303\u56f4\u80fd\u529b<\/strong>\u200c\uff0c\u76f4\u63a5\u51b3\u5b9a\u8bad\u7ec3\u7a33\u5b9a\u6027\u4e0e\u6700\u7ec8\u6027\u80fd\uff1a<\/p>\n\n\n\n<h3 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class=\"wp-block-heading\">\u2696\ufe0f \u5173\u952e\u53d6\u820d\u5bf9\u6bd4<\/h3>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\u7279\u6027<\/th><th>FP16<\/th><th>BF16<\/th><th>INT8<\/th><\/tr><\/thead><tbody><tr><td>\u603b\u4f4d\u6570<\/td><td>16<\/td><td>16<\/td><td>8<\/td><\/tr><tr><td>\u6307\u6570\u4f4d<\/td><td>5<\/td><td>8<\/td><td>&#8211;<\/td><\/tr><tr><td>\u5c3e\u6570\u4f4d<\/td><td>10<\/td><td>7<\/td><td>&#8211;<\/td><\/tr><tr><td>\u52a8\u6001\u8303\u56f4<\/td><td>\u5c0f\uff08\u6613\u6ea2\u51fa\uff09<\/td><td>\u5927\uff08\u540c FP32\uff09<\/td><td>\u7531\u7f29\u653e\u56e0\u5b50\u51b3\u5b9a<\/td><\/tr><tr><td>\u7cbe\u5ea6<\/td><td>\u8f83\u9ad8<\/td><td>\u8f83\u4f4e<\/td><td>\u4f9d\u8d56\u91cf\u5316\u7b97\u6cd5<\/td><\/tr><tr><td>\u5185\u5b58\u5360\u7528\uff08\u76f8\u5bf9 FP32\uff09<\/td><td>1\/2<\/td><td>1\/2<\/td><td>1\/4<\/td><\/tr><tr><td>\u4e3b\u8981\u7528\u9014<\/td><td>\u6df7\u5408\u7cbe\u5ea6\u8bad\u7ec3\u3001\u63a8\u7406<\/td><td>\u5927\u6a21\u578b\u8bad\u7ec3\u9996\u9009<\/td><td>\u63a8\u7406\u90e8\u7f72\u3001\u8fb9\u7f18\u7aef<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">\ud83c\udfaf \u8bad\u7ec3\u573a\u666f\uff1aBF16 \u662f\u9996\u9009\uff0cFP16 \u662f\u5907\u9009<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u200c<strong>BF16<\/strong>\u200c\uff1a\u6307\u6570\u4f4d\u548c FP32 \u5b8c\u5168\u4e00\u6837\uff0c\u52a8\u6001\u8303\u56f4\u5927\uff0c\u8bad\u7ec3\u65f6\u57fa\u672c\u4e0d\u4f1a\u6ea2\u51fa\uff0c\u200c<strong>\u5927\u6a21\u578b\u9884\u8bad\u7ec3\u76ee\u524d\u7684\u4e3b\u6d41\u9009\u62e9<\/strong>\u200c\uff0c\u51e0\u4e4e\u4e0d\u7528\u505a\u635f\u5931\u7f29\u653e\u3002<\/li>\n\n\n\n<li>\u200c<strong>FP16<\/strong>\u200c\uff1a\u7cbe\u5ea6\u6bd4 BF16 \u9ad8\uff08\u5c3e\u6570\u591a 3 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\u52a8\u6001\u635f\u5931\u7f29\u653e\u3002\u4e0d\u8981\u76f4\u63a5\u7528 INT8 \u8bad\u7ec3\u3002[citation]<\/li>\n\n\n\n<li>\u200c<strong>\u63a8\u7406\u90e8\u7f72<\/strong>\u200c\uff1a\u5148\u8bd5 INT8 PTQ\uff08\u540e\u8bad\u7ec3\u91cf\u5316\uff09\uff0c\u7cbe\u5ea6\u4e0d\u591f\u65f6\u628a\u654f\u611f\u5c42\uff08\u5982 LayerNorm\u3001Softmax\uff09\u56de\u9000\u5230 FP16\/BF16\u3002[citation]<\/li>\n\n\n\n<li>\u200c<strong>\u663e\u5b58\u7d27\u5f20<\/strong>\u200c\uff1aINT8 \u80fd\u628a 16GB \u7684\u6a21\u578b\u538b\u5230\u7ea6 8GB\uff0c\u4e00\u53f0 24GB \u663e\u5361\u80fd\u540c\u65f6\u52a0\u8f7d 3 \u4e2a INT8 \u6a21\u578b\u3002[citation]<\/li>\n<\/ul>\n\n\n\n<p>\u7b80\u5355\u8bf4\uff1a\u200c<strong>\u8bad\u7ec3\u770b BF16\uff0c\u63a8\u7406\u770b INT8\uff0cFP16 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