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A balance scale holding a small solid block on one pan and an oversized hollow sphere on the other
data

Benchmark Best Practices, Part 1: Amdahl’s Law Caps Your Scaling Claim

Part 1 of my benchmark best practices series: how I turn a scaling claim into an implied serial fraction with Amdahl’s law, and what the Universal Scalability Law adds. Includes a measured pipeline where assigning more vCPUs per image cut global throughput.

By Julien Laurenceau, 2 months2026-08-25 ago
Unlabelled inference module under an inspection light on an engineering test bench
AI

Ox Alpha Review: Test a Free AI Model Before Production

Ox Alpha is a free anonymous-provider preview on OpenRouter. I explain how I would test task quality, agent reliability, cost, privacy, and fallback readiness before production use.

By Julien Laurenceau, 2 months2026-08-24 ago
Ceph security update illustration showing Tentacle 20.2.4 and Squid 19.2.6 releases
ceph

Ceph CVEs: auth service entities with insecure key types

Ceph 20.2.4 and 19.2.6 patch four authentication and authorization CVEs. The remediation also needs CephX key rotation, client checks, and RGW multisite planning.

By Julien Laurenceau, 2 months2026-08-24 ago
The same abstract point-cloud terrain packaged as many small tiles or a few larger containers
object storage

Why File Count Matters as Much as File Size on Object Storage

Compression, object population and request count measure different things. Compare point-cloud packaging, range reads, update costs and cleanup with an explicit synthetic sizing example.

By Julien Laurenceau, 2 months2026-08-22 ago
Isometric illustration of a distributed edge computing network of glowing server and sensor nodes, with one node shaped like a retro video game controller, on a dark navy and cyan background
data

Which Message Broker for IoT and Real-Time Control

Choose a message broker for real-time IoT control: start from the latency budget, test ack mode and packet loss, and when to skip the broker for UDP.

By Julien Laurenceau, 2 months2026-08-22 ago
Cartoon of identical model cabinets: the public tier has a refused output, while the vetted tier releases a cascade of cubes under SAME WEIGHTS.
AI

After Coldcard: AI Security Depends on Access

The Bitcoin Red Team campaign after Coldcard exposed a dependency beyond model capability: usable access. Separate self-reported findings from confirmed vulnerabilities, then test safeguards, data controls and fallback workflows.

By Julien Laurenceau, 3 months2026-08-07 ago
A large layered model transfers a signal to a smaller model across a brighter slate background.
AI

How Big Models Teach Small Models, and Why It Looks Like School

Knowledge distillation trains a student using a teacher’s examples, output scores or internal features. Compare the access each method needs, then evaluate quality, unwanted behavior, serving performance and full lifecycle cost.

By Julien Laurenceau, 3 months2026-08-06 ago
Two maze plates contrast unguided exploration with a supplied route, without a measured speedup
AI

Why Distillation Can Cut Post-Training Compute

Qwen3 reports a roughly tenfold GPU-hour difference in one post-training comparison. The result explains the value of teacher feedback, not a universal rule for total frontier-model development cost.

By Julien Laurenceau, 3 months2026-08-06 ago
An audio reel beside indexed source cards, illustrating the move from listening to searchable passages
AI

Transcribe 100 Hours of Podcasts with whisper.cpp

I used whisper.cpp on an RTX 5070 to transcribe about 100 hours of podcasts in roughly three hours, then turned the Markdown output into a searchable prompt knowledge base.

By Julien Laurenceau, 3 months2026-08-04 ago
An acknowledged object remains at the source while a disconnected peer has no copy
MinIO

MinIO Site Replication: Sync Mode Will Not Save Your RPO

A successful source PUT does not establish a recoverable peer copy. Separate MinIO site-replication acknowledgment, persisted retry state and catch-up capacity before committing to an RTO or RPO.

By Julien Laurenceau, 3 months2026-08-03 ago

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