Plexus: Giving the Cluster a Nervous System 14 August 2026 · 13 min Built a CRDT-gossiped telemetry mesh so every node in the cluster knows every other node's hardware state in near-real-time. Discovered my capacity numbers had been fiction the whole time — the registry said 96 GB, sysfs… Why 512×512 Works But 1024×1024 Doesn't — Debugging Flux2-dev on a Ryzen AI Max 395+ 1 June 2026 · 9 min · The Cortex Fleet #5 A two-day debugging session into why Flux2-dev generates 512×512 images fine but silently fails at 1024×1024 — Vulkan heap limits, GTT pools, IOMMU, and a GPU memory advisory call that makes buffers CPU-inaccessible at e…