The Insane Infrastructure Design of DeepSeek V4
bycloud
Jun 5, 2026
DeepSeek V4 achieves unprecedented efficiency not just through model architecture, but through a custom, full-stack infrastructure overhaul. By co-designing attention paths, custom GPU kernels, and elastic compute environments, DeepSeek minimizes hardware bottlenecks and optimizes data movement, proving that extreme performance requires aligning hardware and software at a granular level.
Key insight: DeepSeek uses a token-level 'write-ahead log' for RL rollouts, allowing the system to save state and resume from preemption points, preventing data bias and massive compute waste during long-context training.
