{"id":12391,"date":"2026-09-18T19:11:15","date_gmt":"2026-09-18T11:11:15","guid":{"rendered":"https:\/\/infernews.com\/blog\/deepseek-v4-1-flash-kv-cache\/"},"modified":"2026-09-18T19:11:15","modified_gmt":"2026-09-18T11:11:15","slug":"deepseek-v4-1-flash-kv-cache","status":"publish","type":"post","link":"https:\/\/infernews.com\/blog\/deepseek-v4-1-flash-kv-cache\/","title":{"rendered":"[\u6280\u8853\u6587\u7ae0] DeepSeek-V4.1-Flash \u767e\u842c\u4e0a\u4e0b\u6587 KV Cache \u58d3\u5230\u56db\u5206\u4e4b\u4e00"},"content":{"rendered":"\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" src=\"https:\/\/infernews.com\/blog\/wp-content\/uploads\/2026\/09\/pasted-74aebfdc9373.jpg\" alt=\"Hero image preview\"><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u9577\u6587 agent \u8dd1\u5f97\u6108\u4e45\uff0cKV cache \u7d2f\u7a4d\u5f97\u6108\u5feb\uff0cHBM \u5bb9\u91cf\u3001\u983b\u5bec\u3001SSD \u50b3\u8f38\u6210\u672c\u5e7e\u4e4e\u540c\u6b65\u98c6\u5347\uff1bDeepSeek \u5718\u968a\u8a8d\u70ba\uff0c\u9019\u624d\u662f scaling down \u9577\u4e0a\u4e0b\u6587\u90e8\u7f72\u6210\u672c\u7684\u4e3b\u8981\u74f6\u9838\uff0c\u800c\u4e0d\u55ae\u662f\u63a8\u8ad6\u8a08\u7b97\u672c\u8eab\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u70ba\u8655\u7406\u9019\u9053\u96e3\u984c\uff0cDeepSeek-V4.1-Flash \u63a1\u7528 Causal Encoder-Decoder\uff08CED\uff09\u67b6\u69cb\uff1aprefill \u968e\u6bb5\u555f\u7528 8B \u53c3\u6578\uff0cdecode \u968e\u6bb5\u555f\u7528 16B \u53c3\u6578\uff0c\u8b93\u8f38\u5165\u6975\u9577\u4f46\u8f38\u51fa\u76f8\u5c0d\u77ed\u5605 agent workload \u6210\u672c\u7d50\u69cb\u66f4\u53cb\u5584\u3002Backbone \u898f\u6a21\u53bb\u5230 552B\uff0c\u4e26\u652f\u63f4\u9577\u9054\u4e00\u767e\u842c token \u5605\u4e0a\u4e0b\u6587\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u8a18\u61b6\u9ad4\u65b9\u9762\uff0cCompressed Sparse Attention 2\uff08CSA2\uff09\u52a0\u5165\u8de8\u5c64 KV cache reuse \u8207\u5206\u5c64\u7a00\u758f indexer\uff0c\u518d\u642d\u914d FP4 KV cache\uff0c\u4f7f\u5e38\u99d0 HBM \u5605 global KV cache \u964d\u5230\u6bcf\u500b token \u7d04 890 bytes\uff0c\u76f8\u5c0d V4-Flash \u7e2e\u6e1b\u7d04\u56db\u500d\u3001\u76f8\u6bd4 V1 \u66f4\u9054\u5230 437 \u500d\u5e45\u5ea6\u3002\u900f\u904e SWA Bounded Replay \u90e8\u7f72\u512a\u5316\uff0c\u843d\u5728 SSD \u6216 host memory \u5605 persistent footprint \u66f4\u58d3\u5230\u5927\u7d04 V4-Flash \u5605\u516b\u5206\u4e4b\u4e00\u3002\u5373\u4f7f cache \u5927\u5e45\u7e2e\u6e1b\uff0c\u6a21\u578b\u5728 agentic \u57fa\u6e96\u4e0a\u4ecd\u6bd4 baseline \u8868\u73fe\u66f4\u597d\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u9810\u8a13\u7df4\u63a1\u7528 45T token \u5605\u591a\u6a21\u614b\u8a9e\u6599\uff0c\u5f8c\u8a13\u7df4\u4ea6\u7d93\u904e\u5b8c\u6574\u6d41\u7a0b\uff0c\u4f7f V4.1-Flash \u5728\u6587\u672c\u8207\u591a\u6a21\u614b agent \u5834\u666f\u90fd\u4fdd\u6301\u7a69\u5b9a\u8f38\u51fa\u3002\u6a21\u578b checkpoint \u5df2\u65bc Hugging Face \u958b\u6e90\uff0c\u53ef\u4f9b\u793e\u7fa4\u81ea\u884c\u90e8\u7f72\u9a57\u8b49\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>552B \u53c3\u6578 MoE \u9aa8\u5e79\uff0c\u652f\u63f4 100 \u842c token \u4e0a\u4e0b\u6587\u3002<\/li>\n<li>CED \u67b6\u69cb\u4ee4 prefill \u50c5\u555f\u7528 8B \u53c3\u6578\u3001decode \u555f\u7528 16B \u53c3\u6578\u3002<\/li>\n<li>CSA2 + FP4 KV cache \u5c07 global KV cache \u58d3\u81f3 890 bytes\/token\u3002<\/li>\n<li>SWA Bounded Replay \u9032\u4e00\u6b65\u5c07 persistent KV cache \u964d\u81f3 V4-Flash \u7d04 1\/8\u3002<\/li>\n<li>45T token \u591a\u6a21\u614b\u9810\u8a13\u7df4 + \u5b8c\u6574\u5f8c\u8a13\u7df4\uff0cagentic \u8868\u73fe\u512a\u65bc\u524d\u4ee3\u3002<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><a href=\"https:\/\/arxiv.org\/pdf\/2609.19969\" rel=\"noopener noreferrer\"><strong>Paper<\/strong><\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u767e\u842c token \u4e0a\u4e0b\u6587\u80cc\u5f8c\u6700\u5927\u7684\u6210\u672c\u58d3\u529b\u4f86\u81ea KV cache\u3002DeepSeek-V4.1-Flash \u7528 CED \u67b6\u69cb\u914d\u5408 CSA2\uff0c\u5c07\u6bcf\u500b token \u7684\u8a18\u61b6\u9ad4\u7528\u91cf\u58d3\u5230\u5927\u7d04 890 bytes\u3002<\/p>\n","protected":false},"author":8,"featured_media":12390,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"wpai_generated_summary":"","footnotes":""},"categories":[133,76,147],"tags":[],"class_list":["post-12391","post","type-post","status-publish","format-standard","hentry","category-133","category-76","category-deepseek"],"_links":{"self":[{"href":"https:\/\/infernews.com\/blog\/wp-json\/wp\/v2\/posts\/12391","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/infernews.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/infernews.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/infernews.com\/blog\/wp-json\/wp\/v2\/users\/8"}],"replies":[{"embeddable":true,"href":"https:\/\/infernews.com\/blog\/wp-json\/wp\/v2\/comments?post=12391"}],"version-history":[{"count":0,"href":"https:\/\/infernews.com\/blog\/wp-json\/wp\/v2\/posts\/12391\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/infernews.com\/blog\/wp-json\/wp\/v2\/media\/12390"}],"wp:attachment":[{"href":"https:\/\/infernews.com\/blog\/wp-json\/wp\/v2\/media?parent=12391"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/infernews.com\/blog\/wp-json\/wp\/v2\/categories?post=12391"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/infernews.com\/blog\/wp-json\/wp\/v2\/tags?post=12391"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}