{"id":120732,"date":"2026-11-01T06:40:50","date_gmt":"2026-10-31T22:40:50","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/120732.html"},"modified":"2026-11-01T06:40:50","modified_gmt":"2026-10-31T22:40:50","slug":"%e6%99%b6%e5%9c%86%e7%ba%a7%e6%8e%a8%e7%90%86%e7%9a%84%e5%b7%a5%e7%a8%8b%e8%b4%a6%e6%9c%ac%ef%bc%9acerebras-cs-4-%e8%83%8c%e5%90%8e%e7%9a%84%e8%ae%be%e8%ae%a1%e5%8f%96%e8%88%8d","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/120732.html","title":{"rendered":"\u6676\u5706\u7ea7\u63a8\u7406\u7684\u5de5\u7a0b\u8d26\u672c\uff1aCerebras CS-4 \u80cc\u540e\u7684\u8bbe\u8ba1\u53d6\u820d"},"content":{"rendered":"<p>\u6211\u662fAI\u65f6\u4ee3\u7684\u65e0\u4e1a\u6e38\u6c11&#xff0c;\u6211\u6e38\u8361\u5728\u73b0\u5b9e\u4e0e\u610f\u5ff5\u4e4b\u95f4<\/p>\n<hr \/>\n<h2>\u6676\u5706\u7ea7\u63a8\u7406\u7684\u5de5\u7a0b\u8d26\u672c&#xff1a;Cerebras CS-4 \u80cc\u540e\u7684\u8bbe\u8ba1\u53d6\u820d<\/h2>\n<p>\u5f53\u6a21\u578b\u53c2\u6570\u4ece\u767e\u4ebf\u7ea7\u722c\u5411\u4e07\u4ebf\u7ea7&#xff0c;\u63a8\u7406\u4fa7\u7684\u74f6\u9888\u65e9\u5df2\u4e0d\u662f\u5355\u5361\u7b97\u529b&#xff0c;\u800c\u662f\u6570\u636e\u5728\u5b58\u50a8\u4e0e\u8ba1\u7b97\u4e4b\u95f4\u53cd\u590d\u642c\u8fd0\u6240\u4ed8\u51fa\u7684\u4ee3\u4ef7\u3002HBM \u5e26\u5bbd\u5e74\u5e74\u5728\u6da8&#xff0c;\u53ef KV Cache \u7684\u589e\u957f\u901f\u5ea6\u66f4\u5feb&#xff1b;GPU \u96c6\u7fa4\u8d8a\u5806\u8d8a\u5927&#xff0c;\u8de8\u5361\u901a\u4fe1\u7684\u5ef6\u8fdf\u5374\u59cb\u7ec8\u6a2a\u5728 TPOT&#xff08;\u6bcf\u8f93\u51fa token \u65f6\u95f4&#xff09;\u8fd9\u6761\u66f2\u7ebf\u4e0a\u3002Cerebras CS-4 \u503c\u5f97\u8ba4\u771f\u8ba8\u8bba\u7684\u5730\u65b9&#xff0c;\u4e0d\u5728\u4e8e&#034;\u5b83\u53c8\u53d8\u5927\u4e86&#034;&#xff0c;\u800c\u5728\u4e8e\u5b83\u628a\u4e00\u6574\u5957\u6743\u8861\u63a8\u5230\u4e86\u6781\u7aef&#xff1a;\u7528\u4e00\u6574\u7247\u6676\u5706\u6362\u6389\u7247\u95f4\u4e92\u8fde&#xff0c;\u7528\u7247\u4e0a SRAM \u6362\u6389 HBM \u5206\u5c42\u3002\u7406\u89e3\u5b83\u4e3a\u4ec0\u4e48\u8fd9\u4e48\u9009\u3001\u4ee5\u53ca\u8fd9\u4e2a\u9009\u62e9\u5728\u4ec0\u4e48\u8fb9\u754c\u5185\u6210\u7acb&#xff0c;\u6bd4\u8bb0\u4f4f\u53c2\u6570\u66f4\u6709\u4ef7\u503c\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/11\/20261031224049-6ae66e71460f0.jpg\" alt=\"An abstract scene of a glowing core held within a \" \/><\/p>\n<h3>\u2460 \u80cc\u666f\u4e0e\u75db\u70b9&#xff1a;\u63a8\u7406\u7684\u8d26\u5176\u5b9e\u7b97\u5728&#034;\u642c\u8fd0&#034;\u4e0a<\/h3>\n<p>\u771f\u5b9e\u573a\u666f\u91cc&#xff0c;\u95ee\u9898\u5f80\u5f80\u51fa\u73b0\u5728\u4e24\u4e2a\u5730\u65b9\u3002\u4e00\u662f\u957f\u4e0a\u4e0b\u6587\u5bf9\u8bdd\u6216 Agent \u591a\u8f6e\u8c03\u7528\u65f6&#xff0c;\u9996 token \u5ef6\u8fdf&#xff08;TTFT&#xff09;\u968f\u4e0a\u4e0b\u6587\u7ebf\u6027\u52a3\u5316&#xff0c;\u7528\u6237\u611f\u77e5\u5230\u7684\u5c31\u662f&#034;\u6253\u5b57\u673a\u5361\u4f4f&#034;\u3002\u4e8c\u662f\u9ad8\u5e76\u53d1\u4e0b\u7684\u5c3e\u5ef6\u8fdf&#xff1a;GPU \u96c6\u7fa4\u91cc\u5355\u5361\u663e\u5b58\u88c5\u4e0d\u4e0b\u5b8c\u6574\u6743\u91cd&#xff0c;\u53ea\u80fd\u505a\u5f20\u91cf\u5e76\u884c&#xff0c;\u6bcf\u4e00\u5c42\u524d\u5411\u90fd\u8981\u8de8 NVLink \u751a\u81f3\u8de8\u8282\u70b9\u505a All-Reduce\u3002\u901a\u4fe1\u5f00\u9500\u5728\u5c0f batch \u65f6\u88ab\u644a\u8584\u5f97\u6781\u5dee&#xff0c;batch \u4e00\u5927&#xff0c;KV Cache \u53c8\u628a\u663e\u5b58\u6324\u7206\u3002<\/p>\n<p>\u4e0d\u89e3\u51b3\u8fd9\u4e2a\u95ee\u9898\u7684\u4ee3\u4ef7\u5f88\u5177\u4f53&#xff1a;\u4e3a\u4e86\u538b\u4f4f TPOT&#xff0c;\u4f60\u4e0d\u5f97\u4e0d\u52a0\u673a\u5668\u3001\u52a0\u5e76\u884c\u5ea6&#xff0c;\u800c\u5e76\u884c\u5ea6\u8d8a\u9ad8&#xff0c;\u901a\u4fe1\u5360\u6bd4\u8d8a\u5927&#xff0c;\u8fb9\u9645\u6536\u76ca\u8fc5\u901f\u8870\u51cf\u3002\u5f88\u591a\u56e2\u961f\u6700\u540e\u53d1\u73b0&#xff0c;\u63a8\u7406\u6210\u672c\u7684\u5927\u5934\u4e0d\u662f\u7b97\u529b&#xff0c;\u800c\u662f&#034;\u4e3a\u4e86\u534f\u8c03\u7b97\u529b\u800c\u4ed8\u51fa\u7684\u901a\u4fe1\u4e0e\u8c03\u5ea6\u6210\u672c&#034;\u3002\u8fd9\u6b63\u662f CS-4 \u60f3\u7ed5\u5f00\u7684\u90a3\u7b14\u8d26\u3002<\/p>\n<h3>\u2461 \u65b9\u6848\u8bbe\u8ba1&#xff1a;\u628a&#034;\u4e92\u8fde&#034;\u4ece\u7cfb\u7edf\u91cc\u5220\u6389<\/h3>\n<p>\u6838\u5fc3\u601d\u8def\u53ea\u6709\u4e00\u53e5\u8bdd&#xff1a;\u80fd\u653e\u5728\u540c\u4e00\u5757\u7845\u4e0a\u7684&#xff0c;\u5c31\u4e0d\u8981\u8de8\u5c01\u88c5\u3002Cerebras \u7684\u8def\u7ebf\u662f\u6676\u5706\u7ea7\u96c6\u6210\u2014\u2014\u6574\u7247\u6676\u5706\u505a\u6210\u4e00\u9897\u82af\u7247&#xff0c;\u8ba1\u7b97\u6838\u5fc3\u4e0e\u7247\u4e0a SRAM \u901a\u8fc7\u7247\u5185\u7f51\u7edc\u4e92\u8fde&#xff0c;\u6743\u91cd\u548c\u6fc0\u6d3b\u5c3d\u91cf\u4e0d\u51fa\u7247\u3002\u8fd9\u6837\u505a\u7684\u76f4\u63a5\u6536\u76ca\u662f&#xff1a;\u539f\u672c\u8de8 GPU \u7684 All-Reduce \u53d8\u6210\u4e86\u7247\u5185\u8def\u7531&#xff0c;\u5ef6\u8fdf\u4ece\u5fae\u79d2\u7ea7\u964d\u5230\u7eb3\u79d2\u7ea7\u91cf\u7ea7&#xff0c;\u4e14\u4e0d\u968f&#034;\u5361\u6570&#034;\u589e\u957f\u3002<\/p>\n<p>\u660e\u786e\u653e\u5f03\u7684\u66ff\u4ee3\u65b9\u6848\u4e5f\u5f88\u6e05\u695a&#xff1a;<\/p>\n<table>\n<tr>\u65b9\u6848\u4f18\u52bf\u653e\u5f03\u7406\u7531<\/tr>\n<tbody>\n<tr>\n<td>\u591a\u5361 GPU &#043; NVLink\/IB<\/td>\n<td>\u751f\u6001\u6210\u719f\u3001\u53ef\u5f39\u6027\u6269\u7f29<\/td>\n<td>\u901a\u4fe1\u968f\u5e76\u884c\u5ea6\u589e\u957f&#xff0c;\u5c3e\u5ef6\u8fdf\u96be\u538b<\/td>\n<\/tr>\n<tr>\n<td>HBM \u5206\u5c42 &#043; \u5927\u663e\u5b58<\/td>\n<td>\u5bb9\u91cf\u5927\u3001\u6210\u672c\u53ef\u63a7<\/td>\n<td>\u5e26\u5bbd\u5899\u4e0e\u5bb9\u91cf\u5899\u540c\u65f6\u903c\u8fd1<\/td>\n<\/tr>\n<tr>\n<td>\u7247\u5185 SRAM \u5168\u9a7b\u7559&#xff08;\u672c\u65b9\u6848&#xff09;<\/td>\n<td>\u6781\u4f4e\u5ef6\u8fdf\u3001\u65e0\u7247\u95f4\u901a\u4fe1<\/td>\n<td>\u5bb9\u91cf\u53d7\u9650\u3001\u826f\u7387\u4e0e\u6210\u672c\u9ad8<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u53d6\u820d\u7684\u5173\u952e\u5728\u4e8e\u8d1f\u8f7d\u5f62\u6001\u3002\u5982\u679c\u4e1a\u52a1\u662f\u8d85\u957f\u4e0a\u4e0b\u6587\u3001\u4f4e\u5e76\u53d1\u3001\u5bf9\u5ef6\u8fdf\u6781\u654f\u611f\u7684\u4ea4\u4e92\u5f0f\u63a8\u7406&#xff0c;\u7247\u5185\u9a7b\u7559\u7684\u6536\u76ca\u6781\u5927&#xff1b;\u5982\u679c\u662f\u6d77\u91cf\u79bb\u7ebf\u6279\u5904\u7406\u3001\u8ffd\u6c42\u541e\u5410\u6210\u672c\u6bd4&#xff0c;\u90a3 GPU \u96c6\u7fa4\u7684\u5f39\u6027\u4ecd\u7136\u66f4\u5212\u7b97\u3002CS-4 \u7684\u8bbe\u8ba1\u5047\u8bbe\u662f\u524d\u8005\u6b63\u5728\u53d8\u6210\u4e3b\u6d41&#xff0c;\u800c\u4e0d\u662f\u540e\u8005\u6d88\u5931\u3002<\/p>\n<h3>\u2462 \u6838\u5fc3\u5b9e\u73b0&#xff1a;\u4e09\u4e2a\u503c\u5f97\u62c6\u5f00\u7684\u673a\u5236<\/h3>\n<h4>\u6743\u91cd\u4e0e KV Cache \u7684\u9a7b\u7559\u7b56\u7565<\/h4>\n<p>\u7247\u5185 SRAM \u5bb9\u91cf\u6709\u9650&#xff0c;\u5fc5\u987b\u505a\u7cbe\u7ec6\u7684\u5206\u5c42&#xff1a;\u70ed\u6743\u91cd\u5e38\u9a7b\u3001\u51b7\u6743\u91cd\u6309\u9700\u6362\u5165&#xff0c;KV Cache \u5219\u6309\u4f1a\u8bdd\u751f\u547d\u5468\u671f\u7ba1\u7406\u3002\u8fd9\u91cc\u7684\u5751\u5728\u4e8e&#034;\u770b\u8d77\u6765\u80fd\u8dd1\u3001\u7ebf\u4e0a\u4e00\u70b8&#034;\u2014\u2014\u672c\u5730\u5c0f batch \u6d4b\u8bd5\u65f6\u6362\u5165\u6362\u51fa\u88ab\u63a9\u76d6&#xff0c;\u9ad8\u5e76\u53d1\u4e0b\u6362\u5165\u6296\u52a8\u4f1a\u76f4\u63a5\u9876\u9ad8 P99\u3002\u5de5\u7a0b\u4e0a\u8981\u7ed9\u6362\u5165\u8def\u5f84\u8bbe\u786c\u6027\u9884\u7b97&#xff0c;\u8d85\u8fc7\u5c31\u964d\u7ea7\u5230\u66f4\u77ed\u4e0a\u4e0b\u6587\u6216\u62d2\u7edd\u8bf7\u6c42&#xff0c;\u800c\u4e0d\u662f\u8ba9\u5b83\u6392\u961f\u3002<\/p>\n<p><span class=\"token comment\"># \u4f2a\u4ee3\u7801&#xff1a;\u9a7b\u7559\u9884\u7b97\u7684\u786c\u7ea6\u675f&#xff0c;\u907f\u514d\u6362\u5165\u6296\u52a8\u51fb\u7a7f\u5c3e\u5ef6\u8fdf<\/span><br \/>\nRESIDENT_BUDGET_MS <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">2.0<\/span><\/p>\n<p><span class=\"token keyword\">def<\/span> <span class=\"token function\">schedule_layer<\/span><span class=\"token punctuation\">(<\/span>layer<span class=\"token punctuation\">,<\/span> kv_slice<span class=\"token punctuation\">,<\/span> now<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">:<\/span><br \/>\n    <span class=\"token keyword\">if<\/span> layer<span class=\"token punctuation\">.<\/span>is_hot <span class=\"token keyword\">and<\/span> kv_slice<span class=\"token punctuation\">.<\/span>fits_resident<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">:<\/span><br \/>\n        <span class=\"token keyword\">return<\/span> layer<span class=\"token punctuation\">.<\/span>resident_path<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n    cost <span class=\"token operator\">&#061;<\/span> estimate_swap_in_ms<span class=\"token punctuation\">(<\/span>layer<span class=\"token punctuation\">,<\/span> kv_slice<span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token keyword\">if<\/span> cost <span class=\"token operator\">&gt;<\/span> RESIDENT_BUDGET_MS<span class=\"token punctuation\">:<\/span><br \/>\n        <span class=\"token keyword\">raise<\/span> DegradeSignal<span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;swap budget exceeded&#034;<\/span><span class=\"token punctuation\">)<\/span>  <span class=\"token comment\"># \u4e3b\u52a8\u964d\u7ea7\u800c\u975e\u6392\u961f<\/span><br \/>\n    <span class=\"token keyword\">return<\/span> layer<span class=\"token punctuation\">.<\/span>swap_in_path<span class=\"token punctuation\">(<\/span>kv_slice<span class=\"token punctuation\">)<\/span><\/p>\n<h4>\u7247\u5185\u8def\u7531\u66ff\u4ee3\u96c6\u5408\u901a\u4fe1<\/h4>\n<p>\u4f20\u7edf\u5f20\u91cf\u5e76\u884c\u91cc&#xff0c;\u6bcf\u5c42\u7ed3\u675f\u8981\u540c\u6b65\u4e00\u6b21\u3002\u7247\u5185\u65b9\u6848\u628a\u540c\u6b65\u53d8\u6210\u8def\u7531&#xff0c;\u4f46\u4ecd\u9700\u4fdd\u8bc1\u8def\u7531\u4e0d\u6210\u4e3a\u65b0\u74f6\u9888\u3002\u8bbe\u8ba1\u4e0a\u8981\u8ba9\u8ba1\u7b97\u6838\u5fc3\u7684\u6392\u5e03\u4e0e\u6a21\u578b\u5c42\u7684\u5207\u5206\u5bf9\u9f50&#xff0c;\u5426\u5219\u8def\u7531\u8df3\u6570\u4e0a\u5347&#xff0c;\u6536\u76ca\u88ab\u5403\u6389\u3002\u8fd9\u4e5f\u662f\u4e3a\u4ec0\u4e48\u8fd9\u7c7b\u67b6\u6784\u5bf9\u6a21\u578b\u7ed3\u6784\u53d8\u5316\u66f4\u654f\u611f\u2014\u2014\u6362\u4e00\u4e2a attention 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