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News
The more aggressive matmul kernel lost to the register budget
27+ min ago (171+ words) The WebGPU matmul sweep started with a naive kernel, then added 16 by 16 workgroup tiling and a 4 by 4 output block per thread. At a 2048 cubed matrix size, the measured time moved from 47.24 ms for the naive kernel to 17.23 ms for tiling…...
56 fault-injection tests passed. The one that injected nothing failed.
53+ min ago (415+ words) I was building a tool that detects when data quietly changes meaning — a vendor switching units, a source dropping a field, an undocumented enum appearing. The kind of failure where every test passes and every job is green. Claims about…...
gh api --paginate --slurp --jq 'length' Counts Pages, Not Issues
1+ hour, 11+ min ago (415+ words) gh api --paginate --slurp --jq 'length' is the command everyone reaches for to count issues in a repository. It does not count issues. It counts pages. I found this while writing pagination recipes for a toolkit, and then found the…...
From SkillCheck to TraceMantle: Tracking Agent Skill Changes and Test Evidence
1+ hour, 35+ min ago (637+ words) I’ve renamed SkillCheck to TraceMantle and expanded its scope. The original project focused mainly on validating AI agent skill files. TraceMantle retains that functionality and adds support for tracking the files in a skill package, comparing changes, and checking whether…...
I built a radio station with one listener, and it runs in a terminal
1+ hour, 27+ min ago (638+ words) The film above is 86 seconds, and the middle of it is a real on-air moment. There is a longer unedited recording at the top of the repo README. Watch either first, with the sound on. The rest of this post…...
When a Zero-Parameter Cache Overtakes a Transformer
1+ hour, 58+ min ago (574+ words) The question this series exists to answer, put in a form that can be measured: a transformer sees a fixed 64-token window, a count table over the current document sees the whole document, and as documents get longer, how much…...
tokeneff: An Open-Source LLM Cost Meter That Runs Locally
2+ hour, 22+ min ago (338+ words) Most LLM dashboards show you the bill after the damage is done. You run a coding agent for an afternoon, ship a feature, and two days later your OpenAI dashboard says you spent $47. On what? Which model? Which request? You…...
The reply-length check existed for three weeks. The batch a human flagged never touched it: guarding the wrong path
2+ hour, 41+ min ago (339+ words) On 2026-09-05 the owner of our shop looked at three replies the agent was about to send and asked a... Tagged with ai, programming, devtools, claude....
How to Bulk Download Images: From URL Lists to a ZIP File
3+ hour, 23+ min ago (1250+ words) The most useful starting point is a list of direct image URLs. Once you have that list, you can download the files together with a browser tool or a small command-line workflow. This tutorial covers both approaches, plus a JavaScript…...
Fixing the Proxy Deleted the Objective: The Style Review Removed a CTA and Every Accuracy Gate Passed
4+ hour, 58+ min ago (181+ words) Originally published on hexisteme notes. Closing this out took more than restoring the CTA. Four changes, each aimed at a different point where the same shape of failure could recur: And I split the downstream metric so "no data yet…...