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Notes from week 32

Git 2.55 broke opam repo add for all the 4.x base images, and ocaml.org was under scraper attack. On the Tessera side, the v1 dataset got converted to Zarr via Fargate, and there was further investigation into the banding correction.

10 Aug 2026

Marc Elvers

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.plan-26-32: Finally a use for serverless and found the Forester for the trees

GETMobile micro-NPU article and package calculus published, TESSERA embeddings conversion using Fargate Spot, and starting to shift to Forester for teaching.

09 Aug 2026

Anil Madhavapeddy's Blog

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Updating to the OxCaml 5.2.0-minus39 opam packaging

How the OxCaml overlay's guard packages keep incompatible releases out, and how to contribute to it with your own packages.

08 Aug 2026

Anil Madhavapeddy's Blog

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Notes from week 31

A big week, with a couple of long-running efforts finally wrapping up: the Source Cooperative mirror is essentially complete now that we have direct write access, and the three-week Ceph resize has converged. Elsewhere, a slow-down in the genesis job server that looked like a garbage-collector problem turned out to be an HTTP handling bug.

03 Aug 2026

Marc Elvers

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.plan-26-31: Sorting out Tessera and Evidence TAP infrastructure

A petabyte of TESSERA embeddings moves to Source Cooperative, and Taposaur's GROBID metadata index and capability-based downloader take shape for Evidence TAP, while Eio gets some native Windows support.

02 Aug 2026

Anil Madhavapeddy's Blog

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io_uring is not available (ENOMEM)

Thomas reported that ocaml-multicore/eio PRs randomly fail on ocurrent/ocaml-ci with a strange error in the documentation tests.

29 Jul 2026

Marc Elvers

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