// writing

Thinking on inference infrastructure.

Architecture decisions, research notes, and operational lessons from running frontier open models at production scale.

fine-tuning · 2026-04-18

LoRA fine-tuning cost anatomy.

Where the GPU hours go during a $5,000 LoRA run — GPU utilization, checkpoint saves, eval, and idle.

eng · 10 min read
fine-tuning · 2026-02-10

DeepSeek-V3 fine-tuning on LoRA: benchmark report.

Baseline vs. 5k-sample LoRA adapter on three domain tasks. What moved, what didn't, and at what cost.

research · 11 min read