Former CTO (MessageLabs, acquired by Symantec 2008). Now retired, happy tinkering and building local AI infrastructure on NVIDIA DGX Spark hardware.

I work with AI agents daily and much of what you see here is built collaboratively. I provide the hardware, the direction, and the domain experience; the agents handle the heavy engineering. It's a genuine partnership and I'm not shy about it.

Running 122B–671B parameter models on single, dual and cluster NVIDIA DGX Spark systems. Real benchmarks, real hardware, no cloud.

→ dgx-spark — Start here. Navigational guide to all DGX Spark work, organised by inference engine and model. → dgx-spark-glm52 ✨ — Cluster deployment guides written from real experience: GLM 5.2 on 4× Sparks (the complete journey from unboxing to first inference) · What Is Fabric? (building a lossless RoCE fabric with the MikroTik CRS812, from first principles)

• vLLM — GLM 5.2 on 4× Sparks ✨ (671B MoE, all 256 experts, 200K context, ~26 tok/s) · Step 3.7 Flash dual-Spark (198B MoE, RoCE RDMA, 262K context, 18.5 tok/s) · DeepSeek V4 benchmark
• Atlas (contributions merged) — Step 3.7 Flash support for the pure Rust inference engine. PR #136 (merged): NVFP4 support, Blackwell kernels, expert parallelism. Issue #184: extended findings — FP8 quality fix, 13 bug fixes, 70K context validation. Test artifacts.
• llama.cpp — Step 3.7 Flash single-Spark (27 tok/s, 128K context) · Qwen 122B agent stack (47 tok/s)

• barrel-index — The Barrel Index: Pricing benchmarking for machine intelligence. A single HTML file that shows what every major AI producer charges per million tokens, pulled live from the market and racked like a commodity board. No build step, no dependencies, no API key.

• storytelling-psychology — Communication frameworks grounded in cognitive psychology. Built from years of helping technical teams make complex ideas land.
• helix — A non-linear cognition interface for voice AI, designed for dyslexic thinking. Currently paused while pursuing infrastructure work.
• decoherence-paper — Speculative physics: quantum decoherence and the emergence of classical reality. Worldbuilding for a hard SF novel, not a contribution to physics.