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Sparse Attention

Every post tagged “Sparse Attention”, newest first.

2 posts
DeepSeek 22 min

DeepSeek V4 Inside: One Token Through Every Block

How does DeepSeek V4 process one token? I follow the byte p in deepseek through CSA, HCA, mHC, MoE, and MTP on a toy width, with Flash-0731 sizes.

DeepSeek 14 min

DeepSeek V4 Explained: Long-Context Engineering and Math

A verification-first look at DeepSeek V4 claims, plus the real math behind sparse attention, KV-cache scaling, and long-context training stability.