Inference OptimizationLLM ArchitectureQuantization14 min read
Self-Hosting a Frontier Open MoE: The Real GPU Bill for a 1.6-2.8T Open-Weight Model
Self-hosting a frontier open MoE like DeepSeek V4 or Kimi K3 means holding all 1.6-2.8T parameters in VRAM, not the active count. The real GPU bill and when the API wins.
personRoei Z·JUL 26, 2026
Inference Optimization13 min read
PagedAttention Is Gone — What vLLM's Model Runner V2 Replaced It With
vLLM v0.25.0 removed the legacy PagedAttention code and made Model Runner V2 the default for dense models. What changed, and whether it moves your numbers.
personRoei Z·JUL 24, 2026
Inference OptimizationQuantization18 min read
KV-Cache Engineering: The Memory Wall of LLM Serving
The KV cache is the real bottleneck in LLM serving: 70-90% of GPU memory at long context. PagedAttention, prefix caching, MLA, and quantization explained.
personRoei Z·JUL 9, 2026
Inference Optimization11 min read
DeepSeek DSpark: What Semi-Autoregressive Speculative Decoding Actually Changes
DeepSeek DSpark adds semi-autoregressive drafting and load-aware verification to speculative decoding. What is new versus EAGLE-3, and why the benchmarks are not yet independently verified.
personRoei Z·JUN 28, 2026
Inference Optimization17 min read
Speculative Decoding in vLLM: A Practical Guide to Faster LLM Inference
A practical guide to speculative decoding in vLLM: how it works, n-gram and draft-model setups on Qwen3, EAGLE-3, and where the speedup quietly disappears.
personRoei Z·JUN 20, 2026
QuantizationInference Optimization19 min read
Quantization Deep Dive: FP8 Training, FP4, and the Outlier Problem
A technical guide to LLM quantization: FP8 training, NVFP4 and MXFP4, W4A4 inference, the outlier problem, and where low-bit precision quietly breaks accuracy.
personRoei Z·JUN 15, 2026
LLM ArchitectureAttention MechanismsInference Optimization20 min read
Inside DeepSeek: The Architecture Innovations That Shook the AI Industry
Explore DeepSeek's architecture breakthroughs: Multi-Head Latent Attention, auxiliary-loss-free MoE, FP8 training, and GRPO: frontier AI for $5.5M.
personRoei Z·APR 6, 2026
LLM ArchitectureInference Optimization18 min read
LLM Inference Optimization: The Engineering Behind Fast, Cheap AI
Master LLM inference optimization: speculative decoding, KV-cache compression, quantization, FlashAttention, and serving frameworks compared for fast, cost-effective AI.
personRoei Z·APR 6, 2026
LLM ArchitectureInference Optimization22 min read
Mixture of Experts Demystified: Why Every Frontier Model Uses MoE Now
Learn how Mixture of Experts (MoE) powers frontier AI models like DeepSeek-V3 and Mixtral: sparse routing, load balancing, and why MoE beat dense scaling.
personRoei Z·APR 6, 2026